fixing some docker issues

.github/workflows/docker.yml

@@ -62,6 +62,7 @@ jobs:
       - name: Test container with docker compose
         run: |
           echo "Starting container with docker compose..."
+          mkdir -p ./db ./conf && chmod 777 ./db ./conf
           docker compose up --build -d
           echo "Waiting for container to be ready (60 seconds for start_period)..."
           sleep 60

Dockerfile

@@ -1,70 +1,55 @@
-# ================================
+FROM node:22-slim
-# Stage 1: Build stage
-# ================================
-FROM node:22-alpine AS builder
 
-WORKDIR /build
+ARG TARGETARCH
 
-# Install build dependencies needed for native modules (better-sqlite3)
+# System deps for Chrome for Testing + build tools for native modules (better-sqlite3)
-RUN apk add --no-cache python3 make g++
+# On ARM64 we also install system Chromium (Chrome for Testing has no ARM64 binary)
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    curl ca-certificates fonts-liberation libasound2 \
+    libatk-bridge2.0-0 libatk1.0-0 libcups2 libdbus-1-3 \
+    libdrm2 libgbm1 libgtk-3-0 libnspr4 libnss3 \
+    libx11-xcb1 libxcomposite1 libxdamage1 libxrandr2 xdg-utils \
+    python3 make g++ \
+  && if [ "$TARGETARCH" = "arm64" ]; then apt-get install -y --no-install-recommends chromium; fi \
+  && rm -rf /var/lib/apt/lists/* \
+  && mkdir -p /db /conf /fredy
+
+WORKDIR /fredy
+
+ENV NODE_ENV=production \
+    IS_DOCKER=true
 
-# Copy package files first for better layer caching
 COPY package.json yarn.lock ./
 
-# Install all dependencies (including devDependencies for building)
+# Install dependencies and purge build tools (only needed to compile better-sqlite3)
 RUN yarn config set network-timeout 600000 \
-  && yarn --frozen-lockfile
+  && yarn --frozen-lockfile \
+  && yarn cache clean
+
+# on arm64 use the system Chromium installed above
+RUN if [ "$TARGETARCH" != "arm64" ]; then npx puppeteer browsers install chrome; fi
+
+# Purge build tools now that native modules are compiled
+RUN apt-get purge -y python3 make g++ \
+  && apt-get autoremove -y \
+  && rm -rf /var/lib/apt/lists/*
 
-# Copy source files needed for build
 COPY index.html vite.config.js ./
 COPY ui ./ui
 COPY lib ./lib
 
-# Build frontend assets
 RUN yarn build:frontend
 
-# ================================
-# Stage 2: Production stage
-# ================================
-FROM node:22-alpine
-
-WORKDIR /fredy
-
-# Install Chromium and curl (for healthcheck)
-# Using Alpine's chromium package which is much smaller
-RUN apk add --no-cache chromium curl
-
-ENV NODE_ENV=production \
-    IS_DOCKER=true \
-    PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true \
-    PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium-browser
-
-# Install build dependencies for native modules, then remove them after yarn install
-COPY package.json yarn.lock ./
-
-RUN apk add --no-cache --virtual .build-deps python3 make g++ \
-  && yarn config set network-timeout 600000 \
-  && yarn --frozen-lockfile --production \
-  && yarn cache clean \
-  && apk del .build-deps
-
-# Copy built frontend from builder stage
-COPY --from=builder /build/ui/public ./ui/public
-
-# Copy application source (only what's needed at runtime)
 COPY index.js ./
-COPY index.html ./
-COPY lib ./lib
 
-# Prepare runtime directories and symlinks for data and config
+RUN ln -s /db /fredy/db \
-RUN mkdir -p /db /conf \
-  && chown 1000:1000 /db /conf \
-  && chmod 777 /db /conf \
-  && ln -s /db /fredy/db \
   && ln -s /conf /fredy/conf
 
 EXPOSE 9998
 VOLUME /db
 VOLUME /conf
 
+HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 \
+  CMD curl -f http://localhost:9998/ || exit 1
+
 CMD ["node", "index.js"]

docker-test.sh

@@ -7,12 +7,72 @@ if [ "$(docker ps -aq -f name=fredy)" ]; then
   docker rm fredy || true
 fi
 
+# On Apple Silicon, force linux/amd64 to match production CI and avoid arm64/x86_64
+# Chrome mismatch under Rosetta. On native Linux (amd64 or arm64) let Docker pick naturally. That took me fucking 1 hour to figure out.
+PLATFORM=""
+if [ "$(uname -m)" = "arm64" ] && [ "$(uname -s)" = "Darwin" ]; then
+  PLATFORM="linux/amd64"
+fi
+
 # Build image from local Dockerfile, forcing a fresh build without cache
-docker build --no-cache -t fredy:local .
+if [ -n "$PLATFORM" ]; then
+  docker build --no-cache --platform "$PLATFORM" -t fredy:local .
+else
+  docker build --no-cache -t fredy:local .
+fi
 
 # Run container with volumes and port mapping
-docker run -d --name fredy \
+if [ -n "$PLATFORM" ]; then
-  -v fredy_conf:/conf \
+  docker run -d --name fredy --platform "$PLATFORM" -v fredy_conf:/conf -v fredy_db:/db -p 9998:9998 fredy:local
-  -v fredy_db:/db \
+else
-  -p 9998:9998 \
+  docker run -d --name fredy -v fredy_conf:/conf -v fredy_db:/db -p 9998:9998 fredy:local
-  fredy:local
+fi
+
+echo "Waiting for app to be ready..."
+for i in $(seq 1 30); do
+  if docker exec fredy curl -sf http://localhost:9998/ > /dev/null 2>&1; then
+    echo "App is up"
+    break
+  fi
+  if [ "$i" = "30" ]; then
+    echo "App did not come up in time"
+    docker logs fredy
+    exit 1
+  fi
+  sleep 2
+done
+
+# Verify the DB is readable/writable via the API.
+# /api/demo is unauthenticated and reads the settings table — if SQLite is broken this returns an error.
+echo "Testing DB via API (/api/demo)..."
+DEMO_RESPONSE=$(docker exec fredy curl -sf http://localhost:9998/api/demo 2>&1)
+if echo "$DEMO_RESPONSE" | grep -q "demoMode"; then
+  echo "DB is readable (got demoMode from /api/demo)"
+else
+  echo "DB check failed — unexpected response from /api/demo: $DEMO_RESPONSE"
+  docker logs fredy
+  exit 1
+fi
+
+# Verify Chrome launches without crashing.
+# On amd64: Chrome for Testing lives in the puppeteer cache.
+# On arm64: system Chromium is used instead.
+echo "Testing Chrome..."
+CHROME=$(docker exec fredy find /root/.cache/puppeteer /home -name chrome -type f 2>/dev/null | head -1)
+if [ -z "$CHROME" ]; then
+  CHROME=$(docker exec fredy which chromium 2>/dev/null || true)
+fi
+if [ -z "$CHROME" ]; then
+  echo "Chrome/Chromium binary not found"
+  exit 1
+fi
+if docker exec fredy "$CHROME" --headless --no-sandbox --disable-gpu --dump-dom https://example.com 2>&1 | grep -q "<html"; then
+  echo "Chrome works"
+else
+  echo "Chrome failed to render a page"
+  docker exec fredy "$CHROME" --headless --no-sandbox --disable-gpu --dump-dom https://example.com 2>&1 | head -20
+  exit 1
+fi
+
+echo ""
+echo "All checks passed."

eslint.config.js

@@ -25,12 +25,15 @@ export default [
       globals: {
         ...globals.browser,
         ...globals.node,
-        ...globals.mocha,
+        ...globals.jest,
         Promise: 'readonly',
         fetch: 'readonly',
         describe: 'readonly',
         after: 'readonly',
         it: 'readonly',
+        beforeEach: 'readonly',
+        afterEach: 'readonly',
+        vi: 'readonly',
       },
     },
     plugins: { react },

lib/mcp/README.md

@@ -1,4 +1,4 @@
-# Fredy MCP Server
+ # Fredy MCP Server
 
 The Fredy MCP Server exposes your real estate jobs and listings data to LLM clients. It supports two transports:
 
@@ -126,6 +126,54 @@ The LLM will automatically call the appropriate Fredy MCP tools and present the
 
 > **Tip:** Make sure Fredy is running and the database is accessible before starting the MCP server in LM Studio. The stdio transport initializes its own database connection, so Fredy's main process does not need to be running, but the database file must exist and be up-to-date (migrations applied).
 
+### Claude Desktop Configuration
+
+[Claude Desktop](https://claude.ai/download) supports MCP servers natively via its developer settings.
+
+#### Setup
+
+1. Open **Claude Desktop**
+2. Go to **Settings → Developer → Edit Config** — this opens the `claude_desktop_config.json` file
+3. Add the `fredy` server to the `mcpServers` object:
+
+   ```json
+   {
+     "mcpServers": {
+       "fredy": {
+         "command": "/opt/homebrew/opt/node@22/bin/node",
+         "args": ["/absolute/path/to/fredy/lib/mcp/stdio.js"],
+         "env": {
+           "MCP_TOKEN": "fredy_<your-token>"
+         }
+       }
+     }
+   }
+   ```
+
+   Replace `/absolute/path/to/fredy` with the actual path on your machine (e.g. `/Users/you/dev/fredy`).
+
+   > **Important:** Claude Desktop launches with a restricted `PATH` and often cannot find `node` by name. Always use the **full absolute path** to the node binary. Find yours by running `which node` in a terminal. Common locations:
+   > - Homebrew (default): `/opt/homebrew/bin/node`
+   > - Homebrew (versioned, e.g. node@22): `/opt/homebrew/opt/node@22/bin/node`
+   > - nvm: `/Users/<you>/.nvm/versions/node/<version>/bin/node`
+
+4. Save the file and **restart Claude Desktop**
+5. You should see a hammer icon (🔨) in the chat input — click it to confirm the Fredy tools are listed
+
+#### Usage
+
+Once connected, simply ask Claude about your real estate data:
+
+- *"Show me all my active search jobs"*
+- *"List the latest listings from my Berlin apartment search"*
+- *"What are the cheapest apartments added this week?"*
+
+Claude will automatically call the appropriate Fredy MCP tools.
+
+> **Note:** Fredy's main web process does not need to be running — the stdio transport opens its own database connection directly. But the SQLite database file must exist and migrations must have been applied.
+
+---
+
 ## Usage with Remote LLM (Streamable HTTP transport)
 
 The HTTP transport is automatically available when Fredy is running. It uses the MCP Streamable HTTP protocol at:

lib/notification/adapter/smtp.js

@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2026 by Christian Kellner.
+ * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
+ */
+
+import nodemailer from 'nodemailer';
+import path from 'path';
+import fs from 'fs';
+import Handlebars from 'handlebars';
+import { markdown2Html } from '../../services/markdown.js';
+import { getDirName, normalizeImageUrl } from '../../utils.js';
+
+const __dirname = getDirName();
+const template = fs.readFileSync(path.resolve(__dirname + '/notification/emailTemplate/template.hbs'), 'utf8');
+const emailTemplate = Handlebars.compile(template);
+
+const mapListings = (serviceName, jobKey, listings) =>
+  listings.map((l) => {
+    const image = normalizeImageUrl(l.image);
+    return {
+      title: l.title || '',
+      link: l.link || '',
+      address: l.address || '',
+      size: l.size || '',
+      price: l.price || '',
+      image,
+      hasImage: Boolean(image),
+      serviceName,
+      jobKey,
+    };
+  });
+
+export const send = async ({ serviceName, newListings, notificationConfig, jobKey }) => {
+  const { host, port, secure, username, password, receiver, from } = notificationConfig.find(
+    (adapter) => adapter.id === config.id,
+  ).fields;
+
+  const to = receiver
+    .trim()
+    .split(',')
+    .map((r) => r.trim())
+    .filter(Boolean);
+
+  const transporter = nodemailer.createTransport({
+    host,
+    port: Number(port),
+    secure: secure === 'true',
+    auth: {
+      user: username,
+      pass: password,
+    },
+  });
+
+  const listings = mapListings(serviceName, jobKey, newListings);
+
+  const html = emailTemplate({
+    serviceName: `Job: (${jobKey}) | Service: ${serviceName}`,
+    numberOfListings: listings.length,
+    listings,
+  });
+
+  return transporter.sendMail({
+    from,
+    to: to.join(','),
+    subject: `Fredy found ${listings.length} new listing(s) for ${serviceName}`,
+    html,
+  });
+};
+
+export const config = {
+  id: 'smtp',
+  name: 'SMTP',
+  description: 'Send notifications via any SMTP server using Nodemailer.',
+  readme: markdown2Html('lib/notification/adapter/smtp.md'),
+  fields: {
+    host: {
+      type: 'text',
+      label: 'SMTP Host',
+      description: 'The hostname of the SMTP server (e.g., smtp.gmail.com).',
+    },
+    port: {
+      type: 'text',
+      label: 'SMTP Port',
+      description: 'The port of the SMTP server (e.g., 587 for STARTTLS, 465 for SSL).',
+    },
+    secure: {
+      type: 'text',
+      label: 'Secure (SSL/TLS)',
+      description: 'Set to "true" for port 465 (SSL). Leave empty or "false" for STARTTLS on port 587.',
+    },
+    username: {
+      type: 'text',
+      label: 'Username',
+      description: 'The username for SMTP authentication.',
+    },
+    password: {
+      type: 'text',
+      label: 'Password',
+      description: 'The password (or app password) for SMTP authentication.',
+    },
+    receiver: {
+      type: 'text',
+      label: 'Receiver Email(s)',
+      description: 'Comma-separated email addresses Fredy will send notifications to.',
+    },
+    from: {
+      type: 'email',
+      label: 'Sender Email',
+      description: 'The email address Fredy sends from.',
+    },
+  },
+};

lib/notification/adapter/smtp.md

@@ -0,0 +1,22 @@
+### SMTP Adapter
+
+Send notifications through any SMTP server using [Nodemailer](https://nodemailer.com/).
+This works with Gmail, Outlook, self-hosted mail servers, or any provider that supports SMTP.
+
+Setup:
+
+- Provide the SMTP host and port of your mail server.
+- For **SSL/TLS** (port 465), set Secure to `true`.
+- For **STARTTLS** (port 587), leave Secure empty or set it to `false`.
+- Enter the username and password for authentication. For Gmail, use an [App Password](https://support.google.com/accounts/answer/185833).
+- Set the sender email address (must be allowed by your SMTP server).
+
+Multiple recipients:
+
+- Separate email addresses with commas (e.g., `some@email.com`, `someOther@email.com`).
+
+Common SMTP settings:
+
+- **Gmail** — `smtp.gmail.com`, port 587, secure: false
+- **Outlook** — `smtp.office365.com`, port 587, secure: false
+- **Yahoo** — `smtp.mail.yahoo.com`, port 465, secure: true

lib/services/extractor/puppeteerExtractor.js

@@ -47,12 +47,17 @@ export async function launchBrowser(url, options) {
     removeUserDataDir = true;
   }
 
+  // On ARM64 Docker, Chrome for Testing has no native binary — use system Chromium instead.
+  const executablePath =
+    options?.executablePath ||
+    (process.arch === 'arm64' && process.env.IS_DOCKER === 'true' ? '/usr/bin/chromium' : undefined);
+
   const browser = await puppeteer.launch({
     headless: options?.puppeteerHeadless ?? true,
     args: launchArgs,
     timeout: options?.puppeteerTimeout || 45_000,
     userDataDir,
-    executablePath: options?.executablePath,
+    executablePath,
   });
 
   browser.__fredy_userDataDir = userDataDir;

lib/services/storage/migrations/migrate.js

@@ -29,12 +29,12 @@
  */
 import fs from 'fs';
 import path from 'path';
-import { pathToFileURL } from 'url';
+import { pathToFileURL, fileURLToPath } from 'url';
 import crypto from 'crypto';
 import SqliteConnection from '../SqliteConnection.js';
 import logger from '../../logger.js';
 
-const ROOT = path.resolve('.');
+const ROOT = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..', '..', '..', '..');
 /**
  * Absolute path to the migrations directory (lib/services/storage/migrations/sql).
  * @type {string}

lib/services/storage/migrations/sql/12.mcp-tokens.js

@@ -13,7 +13,10 @@ import crypto from 'crypto';
 // Each user gets a permanent, non-expiring secret token used for MCP API authentication.
 // Tokens are auto-generated for all existing users during this migration.
 export function up(db) {
-  db.exec(`ALTER TABLE users ADD COLUMN mcp_token TEXT`);
+  const columns = db.prepare(`PRAGMA table_info(users)`).all();
+  if (!columns.some((col) => col.name === 'mcp_token')) {
+    db.exec(`ALTER TABLE users ADD COLUMN mcp_token TEXT`);
+  }
 
   // Backfill all existing users that don't have a token yet
   const users = db.prepare(`SELECT id FROM users WHERE mcp_token IS NULL`).all();

package.json

@@ -1,6 +1,6 @@
 {
   "name": "fredy",
-  "version": "20.0.4",
+  "version": "20.0.8",
   "description": "[F]ind [R]eal [E]states [d]amn eas[y].",
   "scripts": {
     "prepare": "husky",
@@ -11,8 +11,8 @@
     "build:frontend": "vite build",
     "format": "prettier --write \"**/*.js\"",
     "format:check": "prettier --check \"**/*.js\"",
-    "test": "node --import ./test/esmock-loader.mjs ./node_modules/mocha/bin/mocha.js --timeout 60000 test/**/*.test.js",
+    "test": "vitest run",
-    "testGH": "node --import ./test/esmock-loader.mjs ./node_modules/mocha/bin/mocha.js --timeout 60000 --exclude test/provider/immonet.test.js --exclude test/provider/immobilienDe.test.js --exclude test/provider/immowelt.test.js test/**/*.test.js",
+    "testGH": "vitest run --config vitest.gh.config.js",
     "lint": "eslint .",
     "mcp:stdio": "node lib/mcp/stdio.js",
     "lint:fix": "yarn lint --fix",
@@ -65,26 +65,27 @@
     "@douyinfe/semi-ui": "2.93.0",
     "@douyinfe/semi-ui-19": "^2.93.0",
     "@mapbox/mapbox-gl-draw": "^1.5.1",
-    "@sendgrid/mail": "8.1.6",
-    "@vitejs/plugin-react": "6.0.1",
     "@modelcontextprotocol/sdk": "^1.27.1",
+    "@sendgrid/mail": "8.1.6",
+    "@turf/boolean-point-in-polygon": "^7.3.4",
+    "@vitejs/plugin-react": "6.0.1",
     "adm-zip": "^0.5.16",
     "better-sqlite3": "^12.8.0",
     "body-parser": "2.2.2",
     "chart.js": "^4.5.1",
     "cheerio": "^1.2.0",
-    "@turf/boolean-point-in-polygon": "^7.3.4",
     "cookie-session": "2.1.1",
     "handlebars": "4.7.8",
     "lodash": "4.17.23",
-    "maplibre-gl": "^5.20.1",
+    "maplibre-gl": "^5.21.0",
     "nanoid": "5.1.7",
     "node-cron": "^4.2.1",
     "node-fetch": "3.3.2",
     "node-mailjet": "6.0.11",
+    "nodemailer": "^8.0.3",
     "p-throttle": "^8.1.0",
     "package-up": "^5.0.0",
-    "puppeteer": "^24.39.1",
+    "puppeteer": "^24.40.0",
     "puppeteer-extra": "^3.3.6",
     "puppeteer-extra-plugin-stealth": "^2.11.2",
     "query-string": "9.3.1",
@@ -94,34 +95,32 @@
     "react-range-slider-input": "^3.3.2",
     "react-router": "7.13.1",
     "react-router-dom": "7.13.1",
-    "resend": "^6.9.3",
+    "resend": "^6.9.4",
     "restana": "5.1.0",
     "semver": "^7.7.4",
     "serve-static": "2.2.1",
     "slack": "11.0.2",
-    "vite": "8.0.0",
+    "vite": "8.0.1",
     "x-var": "^3.0.1",
     "zustand": "^5.0.12"
   },
   "devDependencies": {
     "@babel/core": "7.29.0",
     "@babel/eslint-parser": "7.28.6",
-    "@babel/preset-env": "7.29.0",
+    "@babel/preset-env": "7.29.2",
     "@babel/preset-react": "7.28.5",
     "@eslint/js": "^10.0.1",
-    "chai": "6.2.2",
     "chalk": "^5.6.2",
-    "eslint": "10.0.3",
+    "eslint": "10.1.0",
     "eslint-config-prettier": "10.1.8",
     "eslint-plugin-react": "7.37.5",
-    "esmock": "2.7.3",
     "globals": "^17.4.0",
     "history": "5.3.0",
     "husky": "9.1.7",
     "less": "4.6.4",
     "lint-staged": "16.4.0",
-    "mocha": "11.7.5",
     "nodemon": "^3.1.14",
-    "prettier": "3.8.1"
+    "prettier": "3.8.1",
+    "vitest": "^4.1.0"
   }
 }

test/backup/backupRestoreService.test.js

@@ -3,8 +3,7 @@
  * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
  */
 
-import { expect } from 'chai';
+import { vi, describe, it, expect, beforeEach } from 'vitest';
-import esmock from 'esmock';
 
 describe('services/storage/backupRestoreService.js - precheck & filename', () => {
   let svc;
@@ -14,7 +13,7 @@ describe('services/storage/backupRestoreService.js - precheck & filename', () =>
   beforeEach(async () => {
     calls = { logger: { info: [], warn: [], error: [] } };
 
-    // Mock AdmZip with configurable state via globalThis (avoid esmock export name pitfalls)
+    // Mock AdmZip with configurable state via globalThis (avoid mock export name pitfalls)
     globalThis.__ADM_ZIP_STATE__ = { hasDb: false, meta: null };
     setZipState = (s) => {
       globalThis.__ADM_ZIP_STATE__ = { ...globalThis.__ADM_ZIP_STATE__, ...s };
@@ -77,67 +76,61 @@ describe('services/storage/backupRestoreService.js - precheck & filename', () =>
 
     const utilsMock = { getPackageVersion: async () => '16.2.0' };
 
-    const admZipPath = path.join(ROOT, 'node_modules', 'adm-zip', 'adm-zip.js');
+    vi.resetModules();
-    const mod = await esmock(
+    vi.doMock('adm-zip', () => admZipMock);
-      path.join(ROOT, 'lib', 'services', 'storage', 'backupRestoreService.js'),
+    vi.doMock(migratePath, () => migrateMock);
-      {},
+    vi.doMock(sqlitePath, () => sqliteMock);
-      {
+    vi.doMock(loggerPath, () => loggerMock);
-        'adm-zip': admZipMock,
+    vi.doMock(utilsPath, () => utilsMock);
-        [admZipPath]: admZipMock,
-        [migratePath]: migrateMock,
-        [sqlitePath]: sqliteMock,
-        [loggerPath]: loggerMock,
-        [utilsPath]: utilsMock,
-      },
-    );
 
+    const mod = await import(path.join(ROOT, 'lib', 'services', 'storage', 'backupRestoreService.js'));
     svc = mod;
   });
 
   it('precheck: empty upload yields danger', async () => {
     const res = await svc.precheckRestore(Buffer.alloc(0));
-    expect(res.compatible).to.equal(false);
+    expect(res.compatible).toBe(false);
-    expect(res.severity).to.equal('danger');
+    expect(res.severity).toBe('danger');
-    expect(res.message).to.contain('Empty upload');
+    expect(res.message).toContain('Empty upload');
-    expect(res.requiredMigration).to.equal(10);
+    expect(res.requiredMigration).toBe(10);
   });
 
   it('precheck: missing listings.db yields danger', async () => {
     setZipState({ hasDb: false, meta: { dbMigration: 9 } });
     const res = await svc.precheckRestore(Buffer.from('dummy'));
-    expect(res.compatible).to.equal(false);
+    expect(res.compatible).toBe(false);
-    expect(res.severity).to.equal('danger');
+    expect(res.severity).toBe('danger');
-    expect(res.message).to.match(/missing the database file/i);
+    expect(res.message).toMatch(/missing the database file/i);
   });
 
   it('precheck: older backup is compatible with warning', async () => {
     setZipState({ hasDb: true, meta: { dbMigration: 5, fredyVersion: '16.0.0' } });
     const res = await svc.precheckRestore(Buffer.from('zip'));
-    expect(res.compatible).to.equal(true);
+    expect(res.compatible).toBe(true);
-    expect(res.severity).to.equal('warning');
+    expect(res.severity).toBe('warning');
-    expect(res.message).to.match(/automatic migrations/i);
+    expect(res.message).toMatch(/automatic migrations/i);
-    expect(res.backupMigration).to.equal(5);
+    expect(res.backupMigration).toBe(5);
-    expect(res.requiredMigration).to.equal(10);
+    expect(res.requiredMigration).toBe(10);
   });
 
   it('precheck: equal backup is compatible with info', async () => {
     setZipState({ hasDb: true, meta: { dbMigration: 10 } });
     const res = await svc.precheckRestore(Buffer.from('zip'));
-    expect(res.compatible).to.equal(true);
+    expect(res.compatible).toBe(true);
-    expect(res.severity).to.equal('info');
+    expect(res.severity).toBe('info');
   });
 
   it('precheck: newer backup yields danger', async () => {
     setZipState({ hasDb: true, meta: { dbMigration: 11 } });
     const res = await svc.precheckRestore(Buffer.from('zip'));
-    expect(res.compatible).to.equal(false);
+    expect(res.compatible).toBe(false);
-    expect(res.severity).to.equal('danger');
+    expect(res.severity).toBe('danger');
   });
 
   it('buildBackupFileName: matches pattern and includes version', async () => {
     const name = await svc.buildBackupFileName();
-    expect(name).to.match(/^\d{4}-\d{2}-\d{2}-FredyBackup-/);
+    expect(name).toMatch(/^\d{4}-\d{2}-\d{2}-FredyBackup-/);
-    expect(name).to.include('16.2.0');
+    expect(name).toContain('16.2.0');
-    expect(name).to.match(/\.zip$/);
+    expect(name).toMatch(/\.zip$/);
   });
 });

test/db/migrations/migrate.test.js

@@ -3,8 +3,7 @@
  * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
  */
 
-import { expect } from 'chai';
+import { vi, describe, it, expect, beforeEach, afterEach } from 'vitest';
-import esmock from 'esmock';
 
 // We will fully mock fs, crypto, SqliteConnection, and dynamic import of migration modules
 
@@ -85,22 +84,18 @@ describe('db/migrations/migrate.js - runMigrations', () => {
       },
     };
 
-    // esmock with dependency replacements
     const path = await import('node:path');
     const ROOT = path.resolve('.');
     const sqlPath = path.join(ROOT, 'lib', 'services', 'storage', 'SqliteConnection.js');
     const loggerPath = path.join(ROOT, 'lib', 'services', 'logger.js');
-    const mod = await esmock(
-      '../../../db/migrations/migrate.js',
-      {},
-      {
-        fs: fsMock,
-        crypto: cryptoMock,
-        [sqlPath]: sqlMock,
-        [loggerPath]: loggerMock,
-      },
-    );
 
+    vi.resetModules();
+    vi.doMock('fs', () => ({ default: fsMock, ...fsMock }));
+    vi.doMock('crypto', () => ({ default: cryptoMock, ...cryptoMock }));
+    vi.doMock(sqlPath, () => ({ default: sqlMock }));
+    vi.doMock(loggerPath, () => ({ default: loggerMock }));
+
+    const mod = await import('../../../lib/services/storage/migrations/migrate.js');
     runMigrations = mod.runMigrations;
 
     // remember original exitCode to restore later
@@ -114,9 +109,9 @@ describe('db/migrations/migrate.js - runMigrations', () => {
 
   it('logs and returns when no migration files are found', async () => {
     await runMigrations();
-    expect(calls.logs.info.some((a) => String(a[0]).includes('No migration files'))).to.equal(true);
+    expect(calls.logs.info.some((a) => String(a[0]).includes('No migration files'))).toBe(true);
-    expect(calls.sql.getConnection).to.equal(0);
+    expect(calls.sql.getConnection).toBe(0);
-    expect(calls.sql.optimize).to.equal(0);
+    expect(calls.sql.optimize).toBe(0);
   });
 
   it('applies a single new migration inside a transaction and records it', async () => {
@@ -165,11 +160,6 @@ describe('db/migrations/migrate.js - runMigrations', () => {
       },
     };
 
-    // We need to intercept dynamic import by esmock: provide a stub for import(url)
-    // esmock supports mocking via a virtual module using URL matching, but simpler approach:
-    // place the file path that migrate.js will compute and make Node import resolve to our stub
-    // We simulate by mocking url.pathToFileURL is still used, but dynamic import will be handled by esmock when we map the computed path.
-
     const path = await import('node:path');
     const ROOT = path.resolve('.');
 
@@ -178,26 +168,22 @@ describe('db/migrations/migrate.js - runMigrations', () => {
     // Use global importer hook to bypass dynamic import
     globalThis.__TEST_MIGRATE_IMPORT__ = async () => migrationModule;
 
-    const mod = await esmock(
+    vi.resetModules();
-      '../../../db/migrations/migrate.js',
+    vi.doMock('fs', () => ({ default: fsMock, ...fsMock }));
-      {},
+    vi.doMock('crypto', () => ({ default: cryptoMock, ...cryptoMock }));
-      {
+    vi.doMock(sqlPath, () => ({ default: sqlMock }));
-        fs: fsMock,
+    vi.doMock(loggerPath, () => ({ default: loggerMock }));
-        crypto: cryptoMock,
-        [sqlPath]: sqlMock,
-        [loggerPath]: loggerMock,
-      },
-    );
 
+    const mod = await import('../../../lib/services/storage/migrations/migrate.js');
     runMigrations = mod.runMigrations;
 
     await runMigrations();
 
     // Should have started a transaction and inserted into schema_migrations
-    expect(calls.sql.withTransaction.length).to.equal(1);
+    expect(calls.sql.withTransaction.length).toBe(1);
     const inserted = calls.sql.execute.find((e) => String(e.sql).includes('INSERT INTO schema_migrations'));
-    expect(!!inserted).to.equal(true);
+    expect(!!inserted).toBe(true);
-    expect(calls.sql.optimize).to.equal(1);
+    expect(calls.sql.optimize).toBe(1);
   });
 
   it('skips already executed migration with same checksum', async () => {
@@ -242,24 +228,20 @@ describe('db/migrations/migrate.js - runMigrations', () => {
 
     globalThis.__TEST_MIGRATE_IMPORT__ = async () => ({ up: () => {} });
 
-    const mod = await esmock(
+    vi.resetModules();
-      '../../../db/migrations/migrate.js',
+    vi.doMock('fs', () => ({ default: fsMock, ...fsMock }));
-      {},
+    vi.doMock('crypto', () => ({ default: cryptoMock, ...cryptoMock }));
-      {
+    vi.doMock(sqlPath, () => ({ default: sqlMock }));
-        fs: fsMock,
+    vi.doMock(loggerPath, () => ({ default: loggerMock }));
-        crypto: cryptoMock,
-        [sqlPath]: sqlMock,
-        [loggerPath]: loggerMock,
-      },
-    );
 
+    const mod = await import('../../../lib/services/storage/migrations/migrate.js');
     runMigrations = mod.runMigrations;
 
     await runMigrations();
 
     // Should not run transaction because it's skipped
-    expect(calls.sql.withTransaction.length).to.equal(0);
+    expect(calls.sql.withTransaction.length).toBe(0);
-    expect(calls.sql.optimize).to.equal(1);
+    expect(calls.sql.optimize).toBe(1);
   });
 
   it('aborts with exitCode=1 when a migration throws, without applying insert', async () => {
@@ -311,24 +293,20 @@ describe('db/migrations/migrate.js - runMigrations', () => {
     const sqlPath = path.join(ROOT, 'lib', 'services', 'storage', 'SqliteConnection.js');
     const loggerPath = path.join(ROOT, 'lib', 'services', 'logger.js');
 
-    const mod = await esmock(
+    vi.resetModules();
-      '../../../lib/services/storage/migrations/migrate.js',
+    vi.doMock('fs', () => ({ default: fsMock, ...fsMock }));
-      {},
+    vi.doMock('crypto', () => ({ default: cryptoMock, ...cryptoMock }));
-      {
+    vi.doMock(sqlPath, () => ({ default: sqlMock }));
-        fs: fsMock,
+    vi.doMock(loggerPath, () => ({ default: loggerMock }));
-        crypto: cryptoMock,
-        [sqlPath]: sqlMock,
-        [loggerPath]: loggerMock,
-      },
-    );
 
+    const mod = await import('../../../lib/services/storage/migrations/migrate.js');
     runMigrations = mod.runMigrations;
 
     await runMigrations();
 
-    expect(process.exitCode).to.equal(1);
+    expect(process.exitCode).toBe(1);
     // No insert into schema_migrations should be recorded since transaction failed
     const inserted = calls.sql.execute.find((e) => String(e.sql).includes('INSERT INTO schema_migrations'));
-    expect(inserted).to.equal(undefined);
+    expect(inserted).toBe(undefined);
   });
 });

test/esmock-loader.mjs

@@ -1,4 +0,0 @@
-import { register } from 'node:module';
-import { pathToFileURL } from 'node:url';
-
-register('esmock', pathToFileURL('./'));

test/pipeline_filtering.test.js

@@ -3,7 +3,7 @@
  * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
  */
 
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import { mockFredy } from './utils.js';
 import * as mockStore from './mocks/mockStore.js';
 
@@ -34,7 +34,7 @@ describe('Issue reproduction: listings filtered by similarity or area should be
       // Might throw NoNewListingsWarning if all are filtered out
     }
 
-    expect(mockStore.deletedIds).to.include('1');
+    expect(mockStore.deletedIds).toContain('1');
   });
 
   it('should call deleteListingsById when listings are filtered by area', async () => {
@@ -84,6 +84,6 @@ describe('Issue reproduction: listings filtered by similarity or area should be
       // Might throw NoNewListingsWarning if all are filtered out
     }
 
-    expect(mockStore.deletedIds).to.include('2');
+    expect(mockStore.deletedIds).toContain('2');
   });
 });

test/provider/einsAImmobilien.test.js

@@ -6,7 +6,7 @@
 import * as similarityCache from '../../lib/services/similarity-check/similarityCache.js';
 import { get } from '../mocks/mockNotification.js';
 import { providerConfig, mockFredy } from '../utils.js';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import * as provider from '../../lib/provider/einsAImmobilien.js';
 
 describe('#einsAImmobilien testsuite()', () => {
@@ -23,22 +23,22 @@ describe('#einsAImmobilien testsuite()', () => {
         similarityCache,
       );
       fredy.execute().then((listings) => {
-        expect(listings).to.be.a('array');
+        expect(listings).toBeInstanceOf(Array);
         const notificationObj = get();
-        expect(notificationObj).to.be.a('object');
+        expect(notificationObj).toBeTypeOf('object');
-        expect(notificationObj.serviceName).to.equal('einsAImmobilien');
+        expect(notificationObj.serviceName).toBe('einsAImmobilien');
         notificationObj.payload.forEach((notify) => {
           /** check the actual structure **/
-          expect(notify.id).to.be.a('string');
+          expect(notify.id).toBeTypeOf('string');
-          expect(notify.price).to.be.a('string');
+          expect(notify.price).toBeTypeOf('string');
-          expect(notify.size).to.be.a('string');
+          expect(notify.size).toBeTypeOf('string');
-          expect(notify.title).to.be.a('string');
+          expect(notify.title).toBeTypeOf('string');
-          expect(notify.link).to.be.a('string');
+          expect(notify.link).toBeTypeOf('string');
-          expect(notify.address).to.be.a('string');
+          expect(notify.address).toBeTypeOf('string');
           /** check the values if possible **/
-          expect(notify.size).to.be.not.empty;
+          expect(notify.size).not.toBe('');
-          expect(notify.title).to.be.not.empty;
+          expect(notify.title).not.toBe('');
-          expect(notify.link).that.does.include('https://www.1a-immobilienmarkt.de');
+          expect(notify.link).toContain('https://www.1a-immobilienmarkt.de');
         });
         resolve();
       });

test/provider/immobilienDe.test.js

@@ -6,7 +6,7 @@
 import * as similarityCache from '../../lib/services/similarity-check/similarityCache.js';
 import { get } from '../mocks/mockNotification.js';
 import { providerConfig, mockFredy } from '../utils.js';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import * as provider from '../../lib/provider/immobilienDe.js';
 
 describe('#immobilien.de testsuite()', () => {
@@ -16,24 +16,24 @@ describe('#immobilien.de testsuite()', () => {
     return await new Promise((resolve) => {
       const fredy = new Fredy(provider.config, null, null, provider.metaInformation.id, 'test1', similarityCache);
       fredy.execute().then((listing) => {
-        expect(listing).to.be.a('array');
+        expect(listing).toBeInstanceOf(Array);
         const notificationObj = get();
-        expect(notificationObj).to.be.a('object');
+        expect(notificationObj).toBeTypeOf('object');
-        expect(notificationObj.serviceName).to.equal('immobilienDe');
+        expect(notificationObj.serviceName).toBe('immobilienDe');
         notificationObj.payload.forEach((notify) => {
           /** check the actual structure **/
-          expect(notify.id).to.be.a('string');
+          expect(notify.id).toBeTypeOf('string');
-          expect(notify.price).to.be.a('string');
+          expect(notify.price).toBeTypeOf('string');
-          expect(notify.size).to.be.a('string');
+          expect(notify.size).toBeTypeOf('string');
-          expect(notify.title).to.be.a('string');
+          expect(notify.title).toBeTypeOf('string');
-          expect(notify.link).to.be.a('string');
+          expect(notify.link).toBeTypeOf('string');
-          expect(notify.address).to.be.a('string');
+          expect(notify.address).toBeTypeOf('string');
           /** check the values if possible **/
-          expect(notify.price).that.does.include('€');
+          expect(notify.price).toContain('€');
-          expect(notify.size).that.does.include('m²');
+          expect(notify.size).toContain('m²');
-          expect(notify.title).to.be.not.empty;
+          expect(notify.title).not.toBe('');
-          expect(notify.link).that.does.include('https://www.immobilien.de');
+          expect(notify.link).toContain('https://www.immobilien.de');
-          expect(notify.address).to.be.not.empty;
+          expect(notify.address).not.toBe('');
         });
         resolve();
       });

test/provider/immoscout.test.js

@@ -3,7 +3,7 @@
  * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
  */
 
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import * as similarityCache from '../../lib/services/similarity-check/similarityCache.js';
 import { mockFredy, providerConfig } from '../utils.js';
 import { get } from '../mocks/mockNotification.js';
@@ -16,22 +16,22 @@ describe('#immoscout provider testsuite()', () => {
     return await new Promise((resolve) => {
       const fredy = new Fredy(provider.config, null, null, provider.metaInformation.id, '', similarityCache);
       fredy.execute().then((listings) => {
-        expect(listings).to.be.a('array');
+        expect(listings).toBeInstanceOf(Array);
         const notificationObj = get();
-        expect(notificationObj).to.be.a('object');
+        expect(notificationObj).toBeTypeOf('object');
-        expect(notificationObj.serviceName).to.equal('immoscout');
+        expect(notificationObj.serviceName).toBe('immoscout');
         notificationObj.payload.forEach((notify) => {
           /** check the actual structure **/
-          expect(notify.id).to.be.a('string');
+          expect(notify.id).toBeTypeOf('string');
-          expect(notify.price).to.be.a('string');
+          expect(notify.price).toBeTypeOf('string');
-          expect(notify.size).to.be.a('string');
+          expect(notify.size).toBeTypeOf('string');
-          expect(notify.title).to.be.a('string');
+          expect(notify.title).toBeTypeOf('string');
-          expect(notify.link).to.be.a('string');
+          expect(notify.link).toBeTypeOf('string');
-          expect(notify.address).to.be.a('string');
+          expect(notify.address).toBeTypeOf('string');
           /** check the values if possible **/
-          expect(notify.size).to.be.not.empty;
+          expect(notify.size).not.toBe('');
-          expect(notify.title).to.be.not.empty;
+          expect(notify.title).not.toBe('');
-          expect(notify.link).that.does.include('https://www.immobilienscout24.de/');
+          expect(notify.link).toContain('https://www.immobilienscout24.de/');
         });
         resolve();
       });

test/provider/immoswp.test.js

@@ -6,7 +6,7 @@
 import * as similarityCache from '../../lib/services/similarity-check/similarityCache.js';
 import { get } from '../mocks/mockNotification.js';
 import { mockFredy, providerConfig } from '../utils.js';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import * as provider from '../../lib/provider/immoswp.js';
 
 describe('#immoswp testsuite()', () => {
@@ -16,21 +16,21 @@ describe('#immoswp testsuite()', () => {
     return await new Promise((resolve) => {
       const fredy = new Fredy(provider.config, null, null, provider.metaInformation.id, 'immoswp', similarityCache);
       fredy.execute().then((listing) => {
-        expect(listing).to.be.a('array');
+        expect(listing).toBeInstanceOf(Array);
         const notificationObj = get();
-        expect(notificationObj).to.be.a('object');
+        expect(notificationObj).toBeTypeOf('object');
-        expect(notificationObj.serviceName).to.equal('immoswp');
+        expect(notificationObj.serviceName).toBe('immoswp');
         notificationObj.payload.forEach((notify) => {
           /** check the actual structure **/
-          expect(notify.id).to.be.a('string');
+          expect(notify.id).toBeTypeOf('string');
-          expect(notify.price).to.be.a('string');
+          expect(notify.price).toBeTypeOf('string');
-          expect(notify.size).to.be.a('string');
+          expect(notify.size).toBeTypeOf('string');
-          expect(notify.title).to.be.a('string');
+          expect(notify.title).toBeTypeOf('string');
-          expect(notify.link).to.be.a('string');
+          expect(notify.link).toBeTypeOf('string');
           /** check the values if possible **/
-          expect(notify.price).that.does.include('€');
+          expect(notify.price).toContain('€');
-          expect(notify.title).to.be.not.empty;
+          expect(notify.title).not.toBe('');
-          expect(notify.link).that.does.include('https://immo.swp.de');
+          expect(notify.link).toContain('https://immo.swp.de');
         });
         resolve();
       });

test/provider/immowelt.test.js

@@ -6,7 +6,7 @@
 import * as similarityCache from '../../lib/services/similarity-check/similarityCache.js';
 import { get } from '../mocks/mockNotification.js';
 import { mockFredy, providerConfig } from '../utils.js';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import * as provider from '../../lib/provider/immowelt.js';
 
 describe('#immowelt testsuite()', () => {
@@ -17,24 +17,24 @@ describe('#immowelt testsuite()', () => {
     const fredy = new Fredy(provider.config, null, null, provider.metaInformation.id, 'immowelt', similarityCache);
     const listing = await fredy.execute();
 
-    expect(listing).to.be.a('array');
+    expect(listing).toBeInstanceOf(Array);
     const notificationObj = get();
-    expect(notificationObj).to.be.a('object');
+    expect(notificationObj).toBeTypeOf('object');
-    expect(notificationObj.serviceName).to.equal('immowelt');
+    expect(notificationObj.serviceName).toBe('immowelt');
     notificationObj.payload.forEach((notify) => {
       /** check the actual structure **/
-      expect(notify.id).to.be.a('string');
+      expect(notify.id).toBeTypeOf('string');
-      expect(notify.price).to.be.a('string');
+      expect(notify.price).toBeTypeOf('string');
-      expect(notify.title).to.be.a('string');
+      expect(notify.title).toBeTypeOf('string');
-      expect(notify.link).to.be.a('string');
+      expect(notify.link).toBeTypeOf('string');
-      expect(notify.address).to.be.a('string');
+      expect(notify.address).toBeTypeOf('string');
       /** check the values if possible **/
       if (notify.size != null && notify.size.trim().toLowerCase() !== 'k.a.') {
-        expect(notify.size).that.does.include('m²');
+        expect(notify.size).toContain('m²');
       }
-      expect(notify.title).to.be.not.empty;
+      expect(notify.title).not.toBe('');
-      expect(notify.link).that.does.include('https://www.immowelt.de');
+      expect(notify.link).toContain('https://www.immowelt.de');
-      expect(notify.address).to.be.not.empty;
+      expect(notify.address).not.toBe('');
     });
   });
 });

test/provider/kleinanzeigen.test.js

@@ -6,7 +6,7 @@
 import * as similarityCache from '../../lib/services/similarity-check/similarityCache.js';
 import { get } from '../mocks/mockNotification.js';
 import { mockFredy, providerConfig } from '../utils.js';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import * as provider from '../../lib/provider/kleinanzeigen.js';
 
 describe('#kleinanzeigen testsuite()', () => {
@@ -23,20 +23,20 @@ describe('#kleinanzeigen testsuite()', () => {
         similarityCache,
       );
       fredy.execute().then((listing) => {
-        expect(listing).to.be.a('array');
+        expect(listing).toBeInstanceOf(Array);
         const notificationObj = get();
-        expect(notificationObj).to.be.a('object');
+        expect(notificationObj).toBeTypeOf('object');
-        expect(notificationObj.serviceName).to.equal('kleinanzeigen');
+        expect(notificationObj.serviceName).toBe('kleinanzeigen');
         notificationObj.payload.forEach((notify) => {
           /** check the actual structure **/
-          expect(notify.id).to.be.a('string');
+          expect(notify.id).toBeTypeOf('string');
-          expect(notify.title).to.be.a('string');
+          expect(notify.title).toBeTypeOf('string');
-          expect(notify.link).to.be.a('string');
+          expect(notify.link).toBeTypeOf('string');
-          expect(notify.address).to.be.a('string');
+          expect(notify.address).toBeTypeOf('string');
           /** check the values if possible **/
-          expect(notify.title).to.be.not.empty;
+          expect(notify.title).not.toBe('');
-          expect(notify.link).that.does.include('https://www.kleinanzeigen.de');
+          expect(notify.link).toContain('https://www.kleinanzeigen.de');
-          expect(notify.address).to.be.not.empty;
+          expect(notify.address).not.toBe('');
         });
         resolve();
       });

test/provider/mcMakler.test.js

@@ -6,7 +6,7 @@
 import * as similarityCache from '../../lib/services/similarity-check/similarityCache.js';
 import { get } from '../mocks/mockNotification.js';
 import { mockFredy, providerConfig } from '../utils.js';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import * as provider from '../../lib/provider/mcMakler.js';
 
 describe('#mcMakler testsuite()', () => {
@@ -17,22 +17,22 @@ describe('#mcMakler testsuite()', () => {
     const fredy = new Fredy(provider.config, null, null, provider.metaInformation.id, 'mcMakler', similarityCache);
     const listing = await fredy.execute();
 
-    expect(listing).to.be.a('array');
+    expect(listing).toBeInstanceOf(Array);
     const notificationObj = get();
-    expect(notificationObj).to.be.a('object');
+    expect(notificationObj).toBeTypeOf('object');
-    expect(notificationObj.serviceName).to.equal('mcMakler');
+    expect(notificationObj.serviceName).toBe('mcMakler');
     notificationObj.payload.forEach((notify) => {
       /** check the actual structure **/
-      expect(notify.id).to.be.a('string');
+      expect(notify.id).toBeTypeOf('string');
-      expect(notify.price).to.be.a('string');
+      expect(notify.price).toBeTypeOf('string');
-      expect(notify.size).to.be.a('string');
+      expect(notify.size).toBeTypeOf('string');
-      expect(notify.title).to.be.a('string');
+      expect(notify.title).toBeTypeOf('string');
-      expect(notify.link).to.be.a('string');
+      expect(notify.link).toBeTypeOf('string');
-      expect(notify.address).to.be.a('string');
+      expect(notify.address).toBeTypeOf('string');
       /** check the values if possible **/
-      expect(notify.size).that.does.include('m²');
+      expect(notify.size).toContain('m²');
-      expect(notify.title).to.be.not.empty;
+      expect(notify.title).not.toBe('');
-      expect(notify.address).to.be.not.empty;
+      expect(notify.address).not.toBe('');
     });
   });
 });

test/provider/neubauKompass.test.js

@@ -6,7 +6,7 @@
 import * as similarityCache from '../../lib/services/similarity-check/similarityCache.js';
 import { get } from '../mocks/mockNotification.js';
 import { mockFredy, providerConfig } from '../utils.js';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import * as provider from '../../lib/provider/neubauKompass.js';
 
 describe('#neubauKompass testsuite()', () => {
@@ -23,20 +23,20 @@ describe('#neubauKompass testsuite()', () => {
         similarityCache,
       );
       fredy.execute().then((listing) => {
-        expect(listing).to.be.a('array');
+        expect(listing).toBeInstanceOf(Array);
         const notificationObj = get();
-        expect(notificationObj.serviceName).to.equal('neubauKompass');
+        expect(notificationObj.serviceName).toBe('neubauKompass');
         notificationObj.payload.forEach((notify) => {
-          expect(notify).to.be.a('object');
+          expect(notify).toBeTypeOf('object');
           /** check the actual structure **/
-          expect(notify.id).to.be.a('string');
+          expect(notify.id).toBeTypeOf('string');
-          expect(notify.title).to.be.a('string');
+          expect(notify.title).toBeTypeOf('string');
-          expect(notify.link).to.be.a('string');
+          expect(notify.link).toBeTypeOf('string');
-          expect(notify.address).to.be.a('string');
+          expect(notify.address).toBeTypeOf('string');
           /** check the values if possible **/
-          expect(notify.title).to.be.not.empty;
+          expect(notify.title).not.toBe('');
-          expect(notify.link).that.does.include('https://www.neubaukompass.de');
+          expect(notify.link).toContain('https://www.neubaukompass.de');
-          expect(notify.address).to.be.not.empty;
+          expect(notify.address).not.toBe('');
         });
         resolve();
       });

test/provider/ohneMakler.test.js

@@ -6,7 +6,7 @@
 import * as similarityCache from '../../lib/services/similarity-check/similarityCache.js';
 import { get } from '../mocks/mockNotification.js';
 import { mockFredy, providerConfig } from '../utils.js';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import * as provider from '../../lib/provider/ohneMakler.js';
 
 describe('#ohneMakler testsuite()', () => {
@@ -17,22 +17,22 @@ describe('#ohneMakler testsuite()', () => {
     const fredy = new Fredy(provider.config, null, null, provider.metaInformation.id, 'ohneMakler', similarityCache);
     const listing = await fredy.execute();
 
-    expect(listing).to.be.a('array');
+    expect(listing).toBeInstanceOf(Array);
     const notificationObj = get();
-    expect(notificationObj).to.be.a('object');
+    expect(notificationObj).toBeTypeOf('object');
-    expect(notificationObj.serviceName).to.equal('ohneMakler');
+    expect(notificationObj.serviceName).toBe('ohneMakler');
     notificationObj.payload.forEach((notify) => {
       /** check the actual structure **/
-      expect(notify.id).to.be.a('string');
+      expect(notify.id).toBeTypeOf('string');
-      expect(notify.price).to.be.a('string');
+      expect(notify.price).toBeTypeOf('string');
-      expect(notify.size).to.be.a('string');
+      expect(notify.size).toBeTypeOf('string');
-      expect(notify.title).to.be.a('string');
+      expect(notify.title).toBeTypeOf('string');
-      expect(notify.link).to.be.a('string');
+      expect(notify.link).toBeTypeOf('string');
-      expect(notify.address).to.be.a('string');
+      expect(notify.address).toBeTypeOf('string');
       /** check the values if possible **/
-      expect(notify.size).that.does.include('m²');
+      expect(notify.size).toContain('m²');
-      expect(notify.title).to.be.not.empty;
+      expect(notify.title).not.toBe('');
-      expect(notify.address).to.be.not.empty;
+      expect(notify.address).not.toBe('');
     });
   });
 });

test/provider/regionalimmobilien24.test.js

@@ -6,7 +6,7 @@
 import * as similarityCache from '../../lib/services/similarity-check/similarityCache.js';
 import { get } from '../mocks/mockNotification.js';
 import { mockFredy, providerConfig } from '../utils.js';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import * as provider from '../../lib/provider/regionalimmobilien24.js';
 
 describe('#regionalimmobilien24 testsuite()', () => {
@@ -24,22 +24,22 @@ describe('#regionalimmobilien24 testsuite()', () => {
     );
     const listing = await fredy.execute();
 
-    expect(listing).to.be.a('array');
+    expect(listing).toBeInstanceOf(Array);
     const notificationObj = get();
-    expect(notificationObj).to.be.a('object');
+    expect(notificationObj).toBeTypeOf('object');
-    expect(notificationObj.serviceName).to.equal('regionalimmobilien24');
+    expect(notificationObj.serviceName).toBe('regionalimmobilien24');
     notificationObj.payload.forEach((notify) => {
       /** check the actual structure **/
-      expect(notify.id).to.be.a('string');
+      expect(notify.id).toBeTypeOf('string');
-      expect(notify.price).to.be.a('string');
+      expect(notify.price).toBeTypeOf('string');
-      expect(notify.size).to.be.a('string');
+      expect(notify.size).toBeTypeOf('string');
-      expect(notify.title).to.be.a('string');
+      expect(notify.title).toBeTypeOf('string');
-      expect(notify.link).to.be.a('string');
+      expect(notify.link).toBeTypeOf('string');
-      expect(notify.address).to.be.a('string');
+      expect(notify.address).toBeTypeOf('string');
       /** check the values if possible **/
-      expect(notify.size).that.does.include('m²');
+      expect(notify.size).toContain('m²');
-      expect(notify.title).to.be.not.empty;
+      expect(notify.title).not.toBe('');
-      expect(notify.address).to.be.not.empty;
+      expect(notify.address).not.toBe('');
     });
   });
 });

test/provider/sparkasse.test.js

@@ -6,7 +6,7 @@
 import * as similarityCache from '../../lib/services/similarity-check/similarityCache.js';
 import { get } from '../mocks/mockNotification.js';
 import { mockFredy, providerConfig } from '../utils.js';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import * as provider from '../../lib/provider/sparkasse.js';
 
 describe('#sparkasse testsuite()', () => {
@@ -17,22 +17,21 @@ describe('#sparkasse testsuite()', () => {
     const fredy = new Fredy(provider.config, null, null, provider.metaInformation.id, 'sparkasse', similarityCache);
     const listing = await fredy.execute();
 
-    expect(listing).to.be.a('array');
+    expect(listing).toBeInstanceOf(Array);
     const notificationObj = get();
-    expect(notificationObj).to.be.a('object');
+    expect(notificationObj).toBeTypeOf('object');
-    expect(notificationObj.serviceName).to.equal('sparkasse');
+    expect(notificationObj.serviceName).toBe('sparkasse');
     notificationObj.payload.forEach((notify) => {
       /** check the actual structure **/
-      expect(notify.id).to.be.a('string');
+      expect(notify.id).toBeTypeOf('string');
-      expect(notify.price).to.be.a('string');
+      expect(notify.price).toBeTypeOf('string');
-      expect(notify.size).to.be.a('string');
+      expect(notify.title).toBeTypeOf('string');
-      expect(notify.title).to.be.a('string');
+      expect(notify.link).toBeTypeOf('string');
-      expect(notify.link).to.be.a('string');
+      expect(notify.address).toBeTypeOf('string');
-      expect(notify.address).to.be.a('string');
       /** check the values if possible **/
-      expect(notify.size).that.does.include('m²');
+      expect(notify.size).toContain('m²');
-      expect(notify.title).to.be.not.empty;
+      expect(notify.title).not.toBe('');
-      expect(notify.address).to.be.not.empty;
+      expect(notify.address).not.toBe('');
     });
   });
 });

test/provider/testProvider.json

@@ -41,7 +41,7 @@
     "enabled": true
   },
   "sparkasse": {
-    "url": "https://immobilien.sparkasse.de/immobilien/treffer?marketingType=buy&objectType=flat&perimeter=10&usageType=residential&zipCityEstateId=62782__Hamburg",
+    "url": "https://immobilien.sparkasse.de/immobilien/treffer?estateTypeGroupingId=403&marketingType=buy&perimeter=10&usageType=residential&zipCityEstateId=51.22422%2F6.78006%2F0__D%C3%BCsseldorf",
     "enabled": true
   },
   "wgGesucht": {

test/provider/utils.test.js

@@ -5,7 +5,7 @@
 
 import { isOneOf, duringWorkingHoursOrNotSet } from '../../lib/utils.js';
 import assert from 'assert';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 
 const fakeWorkingHoursConfig = (from, to) => ({
   workingHours: {
@@ -25,19 +25,19 @@ describe('utils', () => {
   });
   describe('#duringWorkingHoursOrNotSet()', () => {
     it('should be false', () => {
-      expect(duringWorkingHoursOrNotSet(fakeWorkingHoursConfig('12:00', '13:00'), 0)).to.be.false;
+      expect(duringWorkingHoursOrNotSet(fakeWorkingHoursConfig('12:00', '13:00'), 0)).toBe(false);
     });
     it('should be true', () => {
-      expect(duringWorkingHoursOrNotSet(fakeWorkingHoursConfig('10:00', '16:00'), 1622026740000)).to.be.true;
+      expect(duringWorkingHoursOrNotSet(fakeWorkingHoursConfig('10:00', '16:00'), 1622026740000)).toBe(true);
     });
     it('should be true if nothing set', () => {
-      expect(duringWorkingHoursOrNotSet(fakeWorkingHoursConfig(null, null), 1622026740000)).to.be.true;
+      expect(duringWorkingHoursOrNotSet(fakeWorkingHoursConfig(null, null), 1622026740000)).toBe(true);
     });
     it('should be true if only to is set', () => {
-      expect(duringWorkingHoursOrNotSet(fakeWorkingHoursConfig(null, '13:00'), 1622026740000)).to.be.true;
+      expect(duringWorkingHoursOrNotSet(fakeWorkingHoursConfig(null, '13:00'), 1622026740000)).toBe(true);
     });
     it('should be true if only from is set', () => {
-      expect(duringWorkingHoursOrNotSet(fakeWorkingHoursConfig('12:00', null), 1622026740000)).to.be.true;
+      expect(duringWorkingHoursOrNotSet(fakeWorkingHoursConfig('12:00', null), 1622026740000)).toBe(true);
     });
     it('should handle working hours that cross midnight (e.g., 05:00 → 00:30)', () => {
       const cfg = fakeWorkingHoursConfig('05:00', '00:30');
@@ -49,9 +49,9 @@ describe('utils', () => {
         d.setMilliseconds(0);
         return d.getTime();
       };
-      expect(duringWorkingHoursOrNotSet(cfg, mkTs(23, 0))).to.be.true; // 23:00 => within window
+      expect(duringWorkingHoursOrNotSet(cfg, mkTs(23, 0))).toBe(true); // 23:00 => within window
-      expect(duringWorkingHoursOrNotSet(cfg, mkTs(1, 0))).to.be.false; // 01:00 => outside window
+      expect(duringWorkingHoursOrNotSet(cfg, mkTs(1, 0))).toBe(false); // 01:00 => outside window
-      expect(duringWorkingHoursOrNotSet(cfg, mkTs(6, 0))).to.be.true; // 06:00 => within window
+      expect(duringWorkingHoursOrNotSet(cfg, mkTs(6, 0))).toBe(true); // 06:00 => within window
     });
   });
 });

test/provider/wgGesucht.test.js

@@ -6,7 +6,7 @@
 import * as similarityCache from '../../lib/services/similarity-check/similarityCache.js';
 import { get } from '../mocks/mockNotification.js';
 import { mockFredy, providerConfig } from '../utils.js';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import * as provider from '../../lib/provider/wgGesucht.js';
 
 describe('#wgGesucht testsuite()', () => {
@@ -16,17 +16,17 @@ describe('#wgGesucht testsuite()', () => {
     return await new Promise((resolve) => {
       const fredy = new Fredy(provider.config, null, null, provider.metaInformation.id, 'wgGesucht', similarityCache);
       fredy.execute().then((listing) => {
-        expect(listing).to.be.a('array');
+        expect(listing).toBeInstanceOf(Array);
         const notificationObj = get();
-        expect(notificationObj.serviceName).to.equal('wgGesucht');
+        expect(notificationObj.serviceName).toBe('wgGesucht');
         notificationObj.payload.forEach((notify) => {
-          expect(notify).to.be.a('object');
+          expect(notify).toBeTypeOf('object');
           /** check the actual structure **/
-          expect(notify.id).to.be.a('string');
+          expect(notify.id).toBeTypeOf('string');
-          expect(notify.title).to.be.a('string');
+          expect(notify.title).toBeTypeOf('string');
-          expect(notify.details).to.be.a('string');
+          expect(notify.details).toBeTypeOf('string');
-          expect(notify.price).to.be.a('string');
+          expect(notify.price).toBeTypeOf('string');
-          expect(notify.link).to.be.a('string');
+          expect(notify.link).toBeTypeOf('string');
         });
         resolve();
       });

test/provider/wohnungsboerse.test.js

@@ -6,7 +6,7 @@
 import * as similarityCache from '../../lib/services/similarity-check/similarityCache.js';
 import { get } from '../mocks/mockNotification.js';
 import { providerConfig, mockFredy } from '../utils.js';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import * as provider from '../../lib/provider/wohnungsboerse.js';
 
 describe('#wohnungsboerse testsuite()', () => {
@@ -23,22 +23,22 @@ describe('#wohnungsboerse testsuite()', () => {
         similarityCache,
       );
       fredy.execute().then((listings) => {
-        expect(listings).to.be.a('array');
+        expect(listings).toBeInstanceOf(Array);
         const notificationObj = get();
-        expect(notificationObj).to.be.a('object');
+        expect(notificationObj).toBeTypeOf('object');
-        expect(notificationObj.serviceName).to.equal('wohnungsboerse');
+        expect(notificationObj.serviceName).toBe('wohnungsboerse');
         notificationObj.payload.forEach((notify) => {
           /** check the actual structure **/
-          expect(notify.id).to.be.a('string');
+          expect(notify.id).toBeTypeOf('string');
-          expect(notify.price).to.be.a('string');
+          expect(notify.price).toBeTypeOf('string');
-          expect(notify.size).to.be.a('string');
+          expect(notify.size).toBeTypeOf('string');
-          expect(notify.title).to.be.a('string');
+          expect(notify.title).toBeTypeOf('string');
-          expect(notify.link).to.be.a('string');
+          expect(notify.link).toBeTypeOf('string');
-          expect(notify.address).to.be.a('string');
+          expect(notify.address).toBeTypeOf('string');
           /** check the values if possible **/
-          expect(notify.size).to.be.not.empty;
+          expect(notify.size).not.toBe('');
-          expect(notify.title).to.be.not.empty;
+          expect(notify.title).not.toBe('');
-          expect(notify.link).that.does.include('https://www.wohnungsboerse.net');
+          expect(notify.link).toContain('https://www.wohnungsboerse.net');
         });
         resolve();
       });

test/queryStringMutator/queryStringMutator.test.js

@@ -4,7 +4,7 @@
  */
 
 import fs from 'fs';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import { readFile } from 'fs/promises';
 import mutator from '../../lib/services/queryStringMutator.js';
 import queryString from 'query-string';
@@ -33,8 +33,8 @@ describe('queryStringMutator', () => {
       const expectedParams = queryString.parseUrl(test.shouldBecome);
       const actualParams = queryString.parseUrl(fixedUrl);
       //check if all new params are existing
-      expect(Object.keys(expectedParams.query)).to.include.members(Object.keys(actualParams.query));
+      expect(Object.keys(expectedParams.query)).toEqual(expect.arrayContaining(Object.keys(actualParams.query)));
-      expect(Object.values(expectedParams.query)).to.include.members(Object.values(actualParams.query));
+      expect(Object.values(expectedParams.query)).toEqual(expect.arrayContaining(Object.values(actualParams.query)));
     }
   });
 });

test/services/extractor/botPrevention.test.js

@@ -3,8 +3,7 @@
  * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
  */
 
-import { describe, it } from 'mocha';
+import { expect } from 'vitest';
-import { expect } from 'chai';
 
 import {
   getPreLaunchConfig,
@@ -26,16 +25,16 @@ describe('botPrevention helper', () => {
     };
     const cfg = getPreLaunchConfig(url, options);
 
-    expect(cfg.acceptLanguage).to.equal('de-DE,de;q=0.9');
+    expect(cfg.acceptLanguage).toBe('de-DE,de;q=0.9');
-    expect(cfg.langArg).to.equal('--lang=de-DE');
+    expect(cfg.langArg).toBe('--lang=de-DE');
-    expect(cfg.windowSizeArg).to.equal('--window-size=1200,700');
+    expect(cfg.windowSizeArg).toBe('--window-size=1200,700');
-    expect(cfg.viewport).to.deep.equal({ width: 1200, height: 700, deviceScaleFactor: 2 });
+    expect(cfg.viewport).toEqual({ width: 1200, height: 700, deviceScaleFactor: 2 });
-    expect(cfg.userAgent).to.equal('TestAgent/1.0');
+    expect(cfg.userAgent).toBe('TestAgent/1.0');
-    expect(cfg.headers['Accept-Language']).to.equal('de-DE,de;q=0.9');
+    expect(cfg.headers['Accept-Language']).toBe('de-DE,de;q=0.9');
-    expect(cfg.headers['User-Agent']).to.equal('TestAgent/1.0');
+    expect(cfg.headers['User-Agent']).toBe('TestAgent/1.0');
-    expect(cfg.headers.Referer).to.equal('https://example.com/ref');
+    expect(cfg.headers.Referer).toBe('https://example.com/ref');
-    expect(cfg.extraArgs).to.include('--disable-blink-features=AutomationControlled');
+    expect(cfg.extraArgs).toContain('--disable-blink-features=AutomationControlled');
-    expect(cfg.extraArgs).to.include('--proxy-bypass-list=<-loopback>');
+    expect(cfg.extraArgs).toContain('--proxy-bypass-list=<-loopback>');
   });
 
   it('applyBotPreventionToPage sets UA, viewport, headers and injects patches', async () => {
@@ -58,15 +57,15 @@ describe('botPrevention helper', () => {
 
     await applyBotPreventionToPage(page, cfg);
 
-    expect(calls[0]).to.deep.equal(['setUserAgent', 'Foo/Bar']);
+    expect(calls[0]).toEqual(['setUserAgent', 'Foo/Bar']);
-    expect(calls.some((c) => c[0] === 'setViewport' && c[1].width === 1000 && c[1].height === 600)).to.equal(true);
+    expect(calls.some((c) => c[0] === 'setViewport' && c[1].width === 1000 && c[1].height === 600)).toBe(true);
-    expect(calls.some((c) => c[0] === 'setJavaScriptEnabled' && c[1] === true)).to.equal(true);
+    expect(calls.some((c) => c[0] === 'setJavaScriptEnabled' && c[1] === true)).toBe(true);
     const headerCall = calls.find((c) => c[0] === 'setExtraHTTPHeaders');
-    expect(headerCall).to.exist;
+    expect(headerCall).toBeDefined();
-    expect(headerCall[1]['Accept-Language']).to.equal('en-US,en');
+    expect(headerCall[1]['Accept-Language']).toBe('en-US,en');
-    expect(headerCall[1]['User-Agent']).to.equal('Foo/Bar');
+    expect(headerCall[1]['User-Agent']).toBe('Foo/Bar');
-    expect(calls.some((c) => c[0] === 'emulateTimezone' && c[1] === 'UTC')).to.equal(true);
+    expect(calls.some((c) => c[0] === 'emulateTimezone' && c[1] === 'UTC')).toBe(true);
-    expect(calls.some((c) => c[0] === 'evaluateOnNewDocument' && c[1] === 'function')).to.equal(true);
+    expect(calls.some((c) => c[0] === 'evaluateOnNewDocument' && c[1] === 'function')).toBe(true);
   });
 
   it('applyLanguagePersistence stores languages early', async () => {
@@ -80,9 +79,9 @@ describe('botPrevention helper', () => {
     });
     await applyLanguagePersistence(page, cfg);
     const call = calls[0];
-    expect(call[0]).to.equal('evaluateOnNewDocument');
+    expect(call[0]).toBe('evaluateOnNewDocument');
-    expect(call[1]).to.equal('function');
+    expect(call[1]).toBe('function');
-    expect(call[2]).to.equal('de-DE,de');
+    expect(call[2]).toBe('de-DE,de');
   });
 
   it('applyPostNavigationHumanSignals moves mouse and scrolls when enabled', async () => {
@@ -98,7 +97,7 @@ describe('botPrevention helper', () => {
       viewport: { width: 1200, height: 800 },
     };
     await applyPostNavigationHumanSignals(page, cfg);
-    expect(mouseCalls.some((c) => c[0] === 'move')).to.equal(true);
+    expect(mouseCalls.some((c) => c[0] === 'move')).toBe(true);
-    expect(mouseCalls.some((c) => c[0] === 'wheel')).to.equal(true);
+    expect(mouseCalls.some((c) => c[0] === 'wheel')).toBe(true);
   });
 });

test/services/immoscout/immoscout-web-translator.test.js

@@ -4,7 +4,7 @@
  */
 
 import { convertWebToMobile } from '../../../lib/services/immoscout/immoscout-web-translator.js';
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import { readFile } from 'fs/promises';
 
 export const testData = JSON.parse(await readFile(new URL('./testdata.json', import.meta.url)));
@@ -18,7 +18,7 @@ describe('#immoscout-mobile URL conversion', () => {
       'https://api.mobile.immobilienscout24.de/search/list?apartmenttypes=halfbasement,penthouse,other,loft,groundfloor,terracedflat,raisedgroundfloor,roofstorey,apartment,maisonette&constructionyear=1920-2026&energyefficiencyclasses=a,b,c,d,e,f,g,h,a_plus&equipment=parking,cellar,builtInKitchen,lift,garden,guestToilet,balcony&exclusioncriteria=projectlisting,swapflat&floor=2-7&geocodes=%2Fde%2Fberlin%2Fberlin&haspromotion=false&heatingtypes=central,selfcontainedcentral&livingspace=10.0-25.0&numberofrooms=2.0-5.0&petsallowedtypes=no,yes,negotiable&price=10.0-100.0&pricetype=calculatedtotalrent&realestatetype=apartmentrent&searchType=region';
 
     const actualMobileUrl = convertWebToMobile(webUrl);
-    expect(actualMobileUrl).to.equal(expectedMobileUrl);
+    expect(actualMobileUrl).toBe(expectedMobileUrl);
   });
 
   // Test URL conversion of web-only SEO path
@@ -27,27 +27,27 @@ describe('#immoscout-mobile URL conversion', () => {
 
     const converted = convertWebToMobile(webUrl);
     const queryParams = new URL(converted).searchParams;
-    expect(queryParams.get('equipment').split(',')).to.include.members(['garden', 'balcony']);
+    expect(queryParams.get('equipment').split(',')).toEqual(expect.arrayContaining(['garden', 'balcony']));
   });
 
   // Test URL conversion with unsupported query parameters
   it('should remove unsupported query parameters', () => {
     const webUrl = 'https://www.immobilienscout24.de/Suche/de/berlin/berlin/wohnung-mieten?minimuminternetspeed=100000';
     const converted = convertWebToMobile(webUrl);
-    expect(converted).that.does.not.include('minimuminternetspeed');
+    expect(converted).not.toContain('minimuminternetspeed');
   });
 
   // Test URL conversion with invalid URL
   it('should throw an error for invalid URL', () => {
     const invalidUrl = 'invalid-url';
 
-    expect(() => convertWebToMobile(invalidUrl)).to.throw('Invalid URL: invalid-url');
+    expect(() => convertWebToMobile(invalidUrl)).toThrow('Invalid URL: invalid-url');
   });
 
   // Test URL conversion with unexpected path format
   it('should throw an error for unexpected path format', () => {
     const webUrl = 'https://www.immobilienscout24.de/invalid/path/format';
-    expect(() => convertWebToMobile(webUrl)).to.throw('Unexpected path format: /invalid/path/format');
+    expect(() => convertWebToMobile(webUrl)).toThrow('Unexpected path format: /invalid/path/format');
   });
 
   it('shouldFindResultsForEveryTestData', async () => {
@@ -70,14 +70,12 @@ describe('#immoscout-mobile URL conversion', () => {
         console.error('Error fetching data from ImmoScout Mobile API:', response.statusText);
       }
 
-      expect([null, true]).to.include(response.ok);
+      expect([null, true]).toContain(response.ok);
       const responseBody = await response.json();
-      expect(responseBody.totalResults).to.be.greaterThan(0);
+      expect(responseBody.totalResults).toBeGreaterThan(0);
-      expect(responseBody.totalResults).to.be.greaterThan(0);
+      expect(responseBody.totalResults).toBeGreaterThan(0);
-      expect(responseBody.resultListItems.length).to.greaterThan(0);
+      expect(responseBody.resultListItems.length).toBeGreaterThan(0);
-      expect(responseBody.resultListItems.filter((r) => r.type === 'EXPOSE_RESULT')[0].item.realEstateType).to.equal(
+      expect(responseBody.resultListItems.filter((r) => r.type === 'EXPOSE_RESULT')[0].item.realEstateType).toBe(type);
-        type,
-      );
     }
   });
 });

test/services/jobs/jobExecutionService.test.js

@@ -3,8 +3,7 @@
  * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
  */
 
-import { expect } from 'chai';
+import { vi, describe, it, expect, beforeEach } from 'vitest';
-import esmock from 'esmock';
 import { EventEmitter } from 'node:events';
 
 describe('services/jobs/jobExecutionService', () => {
@@ -22,45 +21,39 @@ describe('services/jobs/jobExecutionService', () => {
     const brokerPath = root + '/lib/services/sse/sse-broker.js';
     const utilsPath = root + '/lib/utils.js';
     const loggerPath = root + '/lib/services/logger.js';
+    const notifyPath = root + '/lib/notification/notify.js';
 
-    // esmock the service with all its collaborators
+    vi.resetModules();
-    const mod = await esmock(
+    vi.doMock(busPath, () => ({ bus }));
-      svcPath,
+    vi.doMock(jobStoragePath, () => ({
-      {},
+      getJob: (id) => state.jobsById[id] || null,
-      {
+      getJobs: () => state.jobsList.slice(),
-        [busPath]: { bus },
+    }));
-        [jobStoragePath]: {
+    vi.doMock(userStoragePath, () => ({
-          getJob: (id) => state.jobsById[id] || null,
+      getUsers: () => state.users.slice(),
-          getJobs: () => state.jobsList.slice(),
+      getUser: (id) => state.users.find((u) => u.id === id) || null,
-        },
+    }));
-        [userStoragePath]: {
+    vi.doMock(brokerPath, () => ({
-          getUsers: () => state.users.slice(),
+      sendToUsers: (...args) => calls.sent.push(args),
-          getUser: (id) => state.users.find((u) => u.id === id) || null,
+    }));
-        },
+    vi.doMock(utilsPath, () => ({
-        [brokerPath]: {
+      duringWorkingHoursOrNotSet: () => false,
-          sendToUsers: (...args) => calls.sent.push(args),
+    }));
-        },
+    vi.doMock(loggerPath, () => {
-        [utilsPath]: {
+      const m = { debug: () => {}, info: () => {}, warn: () => {}, error: () => {} };
-          duringWorkingHoursOrNotSet: () => false, // avoid startup run
+      return { default: m };
-        },
+    });
-        [loggerPath]: {
+    vi.doMock(notifyPath, () => ({ send: async () => [] }));
-          debug: () => {},
+    vi.doMock(root + '/lib/services/jobs/run-state.js', () => ({
-          info: () => {},
+      isRunning: () => false,
-          warn: () => {},
+      markRunning: (id) => {
-          error: () => {},
+        calls.markRunning.push(id);
-        },
+        return true;
-        [root + '/lib/services/jobs/run-state.js']: {
-          isRunning: () => false,
-          markRunning: (id) => {
-            calls.markRunning.push(id);
-            return true;
-          },
-          markFinished: () => {},
-        },
       },
-    );
+      markFinished: () => {},
+    }));
 
-    // call initializer with minimal deps
+    const mod = await import(svcPath);
     mod.initJobExecutionService({ providers: [], settings: { demoMode: false }, intervalMs: 0 });
     return mod;
   }
@@ -87,13 +80,13 @@ describe('services/jobs/jobExecutionService', () => {
 
     bus.emit('jobs:status', { jobId: 'j1', running: true });
 
-    expect(calls.sent.length).to.equal(1, 'sendToUsers should be called once');
+    expect(calls.sent.length, 'sendToUsers should be called once').toBe(1);
     const [recipients, event, data] = calls.sent[0];
-    expect(event).to.equal('jobStatus');
+    expect(event).toBe('jobStatus');
-    expect(data).to.deep.equal({ jobId: 'j1', running: true });
+    expect(data).toEqual({ jobId: 'j1', running: true });
     const got = new Set(recipients);
     const expected = new Set(['owner1', 'u2', 'a1']);
-    expect(got).to.deep.equal(expected);
+    expect(got).toEqual(expected);
   });
 
   it('runs all jobs for admin; only own jobs for regular user', async () => {
@@ -113,12 +106,12 @@ describe('services/jobs/jobExecutionService', () => {
     bus.emit('jobs:runAll', { userId: 'u1' });
     // allow microtasks to flush
     await new Promise((r) => setTimeout(r, 0));
-    expect(new Set(calls.markRunning)).to.deep.equal(new Set(['j1']));
+    expect(new Set(calls.markRunning)).toEqual(new Set(['j1']));
 
     // Admin: all jobs
     calls.markRunning = [];
     bus.emit('jobs:runAll', { userId: 'admin' });
     await new Promise((r) => setTimeout(r, 0));
-    expect(new Set(calls.markRunning)).to.deep.equal(new Set(['j1', 'j2']));
+    expect(new Set(calls.markRunning)).toEqual(new Set(['j1', 'j2']));
   });
 });

test/similarity/similarityCache.test.js

@@ -3,18 +3,15 @@
  * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
  */
 
-import { expect } from 'chai';
+import { vi, describe, it, expect } from 'vitest';
-import esmock from 'esmock';
 
 // Helper to create module under test with mocks
 async function loadModuleWith({ entries = [] } = {}) {
-  const mod = await esmock('../../lib/services/similarity-check/similarityCache.js', {
+  vi.resetModules();
-    // Mock the storage to return our controlled entries
+  vi.doMock('../../lib/services/storage/listingsStorage.js', () => ({
-    '../../lib/services/storage/listingsStorage.js': {
+    getAllEntriesFromListings: () => entries,
-      getAllEntriesFromListings: () => entries,
+  }));
-    },
+  return await import('../../lib/services/similarity-check/similarityCache.js');
-  });
-  return mod;
 }
 
 describe('similarityCache', () => {
@@ -27,15 +24,15 @@ describe('similarityCache', () => {
     const { initSimilarityCache, checkAndAddEntry } = await loadModuleWith({ entries });
 
     // Initially, duplicates should not be detected for new data
-    expect(checkAndAddEntry({ title: 'X', price: 200, address: 'Y' })).to.equal(false);
+    expect(checkAndAddEntry({ title: 'X', price: 200, address: 'Y' })).toBe(false);
 
     // Now initialize from storage
     initSimilarityCache();
 
     // Exact duplicates should be detected
-    expect(checkAndAddEntry({ title: 'A', price: 1000, address: 'Main 1' })).to.equal(true);
+    expect(checkAndAddEntry({ title: 'A', price: 1000, address: 'Main 1' })).toBe(true);
     // Ensure falsy-but-valid price 0 is preserved by hashing and detected as duplicate
-    expect(checkAndAddEntry({ title: 'B', price: 0, address: 'Zero St' })).to.equal(true);
+    expect(checkAndAddEntry({ title: 'B', price: 0, address: 'Zero St' })).toBe(true);
   });
 
   it('checkAndAddEntry returns false for new entry then true for duplicate on second call', async () => {
@@ -44,8 +41,8 @@ describe('similarityCache', () => {
     const first = checkAndAddEntry({ title: 'C', price: 300, address: 'Road 3' });
     const second = checkAndAddEntry({ title: 'C', price: 300, address: 'Road 3' });
 
-    expect(first).to.equal(false);
+    expect(first).toBe(false);
-    expect(second).to.equal(true);
+    expect(second).toBe(true);
   });
 
   it('hashing ignores null/undefined but preserves 0 via behavior', async () => {
@@ -53,15 +50,15 @@ describe('similarityCache', () => {
 
     // Add baseline (null address ignored)
     const add1 = checkAndAddEntry({ title: 'T', price: 1, address: null });
-    expect(add1).to.equal(false);
+    expect(add1).toBe(false);
     // Duplicate with undefined address should match
     const dup = checkAndAddEntry({ title: 'T', price: 1, address: undefined });
-    expect(dup).to.equal(true);
+    expect(dup).toBe(true);
 
     // Now test that price 0 is preserved (not filtered out)
     const addZero = checkAndAddEntry({ title: 'Z', price: 0, address: 'Zero' });
-    expect(addZero).to.equal(false);
+    expect(addZero).toBe(false);
     const dupZero = checkAndAddEntry({ title: 'Z', price: 0, address: 'Zero' });
-    expect(dupZero).to.equal(true);
+    expect(dupZero).toBe(true);
   });
 });

test/storage/SqliteConnection.test.js

@@ -3,8 +3,7 @@
  * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
  */
 
-import { expect } from 'chai';
+import { vi, describe, it, expect, beforeEach, afterEach } from 'vitest';
-import esmock from 'esmock';
 
 // We explicitly avoid touching the real filesystem or creating a real DB file.
 // better-sqlite3 is fully mocked and operates in-memory via our stubs.
@@ -78,15 +77,10 @@ describe('SqliteConnection', () => {
       };
     };
 
-    // esmock the module with our stubs
+    vi.resetModules();
-    SqliteConnection = await esmock(
+    vi.doMock('fs', () => ({ default: fsMock, ...fsMock }));
-      '../../lib/services/storage/SqliteConnection.js',
+    vi.doMock('better-sqlite3', () => ({ default: BetterSqlite3Mock }));
-      {},
+    SqliteConnection = (await import('../../lib/services/storage/SqliteConnection.js')).default;
-      {
-        fs: fsMock,
-        'better-sqlite3': { default: BetterSqlite3Mock },
-      },
-    );
   });
 
   afterEach(() => {
@@ -98,9 +92,9 @@ describe('SqliteConnection', () => {
     const db1 = SqliteConnection.getConnection();
     const db2 = SqliteConnection.getConnection();
 
-    expect(db1).to.equal(db2);
+    expect(db1).toBe(db2);
     // journal_mode, synchronous, cache_size, foreign_keys, optimize
-    expect(calls.db.pragma).to.deep.equal([
+    expect(calls.db.pragma).toEqual([
       'journal_mode = WAL',
       'synchronous = NORMAL',
       'cache_size = -64000',
@@ -108,21 +102,21 @@ describe('SqliteConnection', () => {
       'optimize',
     ]);
     // mkdirSync should not be called because existsSync returned true
-    expect(calls.fs.mkdirSync).to.have.length(0);
+    expect(calls.fs.mkdirSync).toHaveLength(0);
   });
 
   it('executes query and execute helpers', () => {
     const rows = SqliteConnection.query('SELECT 1', {});
-    expect(rows).to.be.an('array');
+    expect(rows).toBeInstanceOf(Array);
-    expect(rows[0]).to.deep.equal({ x: 1 });
+    expect(rows[0]).toEqual({ x: 1 });
 
     const info = SqliteConnection.execute('UPDATE x SET y=1 WHERE id=@id', { id: 5 });
-    expect(info).to.have.property('changes', 1);
+    expect(info).toHaveProperty('changes', 1);
   });
 
   it('tableExists uses sqlite_master get()', () => {
     const exists = SqliteConnection.tableExists('users');
-    expect(exists).to.equal(true);
+    expect(exists).toBe(true);
   });
 
   it('withTransaction wraps callback', () => {
@@ -131,17 +125,17 @@ describe('SqliteConnection', () => {
       db.prepare('SELECT inside').all({});
       return 42;
     });
-    expect(result).to.equal(42);
+    expect(result).toBe(42);
-    expect(calls.db.prepare).to.include('SELECT inside');
+    expect(calls.db.prepare).toContain('SELECT inside');
   });
 
   it('optimize() delegates to PRAGMA optimize and close() calls it again then closes', () => {
     SqliteConnection.optimize();
     // It will use the existing connection and call pragma('optimize')
-    expect(calls.db.pragma).to.include('optimize');
+    expect(calls.db.pragma).toContain('optimize');
 
     SqliteConnection.close();
     // close increments close counter
-    expect(calls.db.close).to.equal(1);
+    expect(calls.db.close).toBe(1);
   });
 });

test/utils.js

@@ -3,29 +3,24 @@
  * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
  */
 
+import { vi } from 'vitest';
 import { readFile } from 'fs/promises';
-import esmock from 'esmock';
 import * as mockStore from './mocks/mockStore.js';
 import { send } from './mocks/mockNotification.js';
 
 export const providerConfig = JSON.parse(await readFile(new URL('./provider/testProvider.json', import.meta.url)));
 
+vi.mock('../lib/services/storage/listingsStorage.js', () => mockStore);
+vi.mock('../lib/services/storage/settingsStorage.js', () => mockStore);
+vi.mock('../lib/services/geocoding/geoCodingService.js', () => ({
+  geocodeAddress: mockStore.getGeocoordinatesByAddress,
+}));
+vi.mock('../lib/services/storage/jobStorage.js', () => ({
+  getJob: (jobKey) => ({ id: jobKey, userId: 'user1' }),
+}));
+vi.mock('../lib/notification/notify.js', () => ({ send }));
+
 export const mockFredy = async () => {
-  return await esmock('../lib/FredyPipelineExecutioner', {
+  const mod = await import('../lib/FredyPipelineExecutioner.js');
-    '../lib/services/storage/listingsStorage.js': {
+  return mod.default ?? mod;
-      ...mockStore,
-    },
-    '../lib/services/storage/settingsStorage.js': {
-      ...mockStore,
-    },
-    '../lib/services/geocoding/geoCodingService.js': {
-      geocodeAddress: mockStore.getGeocoordinatesByAddress,
-    },
-    '../lib/services/storage/jobStorage.js': {
-      getJob: (jobKey) => ({ id: jobKey, userId: 'user1' }),
-    },
-    '../lib/notification/notify.js': {
-      send,
-    },
-  });
 };

test/utils/utils.test.js

@@ -3,19 +3,19 @@
  * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
  */
 
-import { expect } from 'chai';
+import { expect } from 'vitest';
 import { buildHash } from '../../lib/utils.js';
 
 describe('utilsCheck', () => {
   describe('#utilsCheck()', () => {
     it('should be null when null input', () => {
-      expect(buildHash(null)).to.be.null;
+      expect(buildHash(null)).toBeNull();
     });
     it('should be null when null empty', () => {
-      expect(buildHash('')).to.be.null;
+      expect(buildHash('')).toBeNull();
     });
     it('should return a value', () => {
-      expect(buildHash('bla', '', null)).to.be.a.string;
+      expect(buildHash('bla', '', null)).toBeTypeOf('string');
     });
   });
 });

ui/src/views/jobs/mutation/components/notificationAdapter/NotificationAdapterMutator.jsx

@@ -158,11 +158,11 @@ export default function NotificationAdapterMutator({
           {uiElement.type === 'boolean' ? (
             <div style={{ display: 'flex', alignItems: 'center', gap: '16px' }}>
               <Switch
-              checked={uiElement.value || false}
+                checked={uiElement.value || false}
-              onChange={(checked) => {
+                onChange={(checked) => {
-                setValue(selectedAdapter, uiElement, key, checked);
+                  setValue(selectedAdapter, uiElement, key, checked);
-              }}
+                }}
-            />
+              />
               {uiElement.label}
             </div>
           ) : (
@@ -173,6 +173,7 @@ export default function NotificationAdapterMutator({
               initValue={uiElement.value ?? ''}
               placeholder={uiElement.label}
               label={uiElement.label}
+              extraText={uiElement.description}
               onChange={(value) => {
                 setValue(selectedAdapter, uiElement, key, value);
               }}

vitest.config.js

@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2026 by Christian Kellner.
+ * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
+ */
+
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    globals: true,
+    environment: 'node',
+    include: ['test/**/*.test.js'],
+    testTimeout: 60000,
+    reporters: ['verbose'],
+  },
+});

vitest.gh.config.js

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2026 by Christian Kellner.
+ * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
+ */
+
+import { defineConfig, mergeConfig } from 'vitest/config';
+import base from './vitest.config.js';
+
+export default mergeConfig(
+  base,
+  defineConfig({
+    test: {
+      exclude: [
+        '**/node_modules/**',
+        'test/provider/immonet.test.js',
+        'test/provider/immobilienDe.test.js',
+        'test/provider/immowelt.test.js',
+      ],
+    },
+  }),
+);