adding 'open in fredy'

test/utils/detectBaseUrl.test.js

@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2026 by Christian Kellner.
+ * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
+ */
+
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
+
+vi.mock('fs');
+vi.mock('os');
+
+import * as fsMock from 'fs';
+import * as osMock from 'os';
+import { isRunningInDocker, detectLocalIp, guessBaseUrl } from '../../lib/utils/detectBaseUrl.js';
+
+describe('detectBaseUrl', () => {
+  let originalEnv;
+
+  beforeEach(() => {
+    originalEnv = { ...process.env };
+    vi.clearAllMocks();
+    delete process.env.FREDY_DOCKER;
+    delete process.env.FREDY_HOST_IP;
+  });
+
+  afterEach(() => {
+    process.env = originalEnv;
+  });
+
+  describe('isRunningInDocker', () => {
+    it('returns true when FREDY_DOCKER=1', () => {
+      process.env.FREDY_DOCKER = '1';
+      expect(isRunningInDocker()).toBe(true);
+    });
+
+    it('returns false when no Docker signals present', () => {
+      vi.mocked(fsMock.accessSync).mockImplementation(() => {
+        throw new Error('not found');
+      });
+      vi.mocked(fsMock.readFileSync).mockImplementation(() => {
+        throw new Error('not found');
+      });
+      expect(isRunningInDocker()).toBe(false);
+    });
+
+    it('returns true when /.dockerenv is accessible', () => {
+      vi.mocked(fsMock.accessSync).mockReturnValue(undefined);
+      expect(isRunningInDocker()).toBe(true);
+    });
+
+    it('returns true when /proc/self/cgroup contains docker', () => {
+      vi.mocked(fsMock.accessSync).mockImplementation(() => {
+        throw new Error('not found');
+      });
+      vi.mocked(fsMock.readFileSync).mockReturnValue('12:cpu:/docker/abc123');
+      expect(isRunningInDocker()).toBe(true);
+    });
+
+    it('returns true when /proc/self/cgroup contains containerd', () => {
+      vi.mocked(fsMock.accessSync).mockImplementation(() => {
+        throw new Error('not found');
+      });
+      vi.mocked(fsMock.readFileSync).mockReturnValue('0::/../containerd/abc');
+      expect(isRunningInDocker()).toBe(true);
+    });
+  });
+
+  describe('detectLocalIp', () => {
+    it('returns 172.17.0.1 when running in Docker (default)', () => {
+      process.env.FREDY_DOCKER = '1';
+      expect(detectLocalIp()).toBe('172.17.0.1');
+    });
+
+    it('returns FREDY_HOST_IP when set in Docker', () => {
+      process.env.FREDY_DOCKER = '1';
+      process.env.FREDY_HOST_IP = '192.168.1.50';
+      expect(detectLocalIp()).toBe('192.168.1.50');
+    });
+
+    it('skips docker bridge IPs and returns real LAN IP', () => {
+      vi.mocked(fsMock.accessSync).mockImplementation(() => {
+        throw new Error();
+      });
+      vi.mocked(fsMock.readFileSync).mockImplementation(() => {
+        throw new Error();
+      });
+      vi.mocked(osMock.networkInterfaces).mockReturnValue({
+        docker0: [{ family: 'IPv4', address: '172.17.0.1', internal: false }],
+        en0: [{ family: 'IPv4', address: '192.168.1.100', internal: false }],
+      });
+      expect(detectLocalIp()).toBe('192.168.1.100');
+    });
+
+    it('prefers en0 over arbitrary interfaces', () => {
+      vi.mocked(fsMock.accessSync).mockImplementation(() => {
+        throw new Error();
+      });
+      vi.mocked(fsMock.readFileSync).mockImplementation(() => {
+        throw new Error();
+      });
+      vi.mocked(osMock.networkInterfaces).mockReturnValue({
+        utun3: [{ family: 'IPv4', address: '10.8.0.1', internal: false }],
+        en0: [{ family: 'IPv4', address: '192.168.178.50', internal: false }],
+      });
+      expect(detectLocalIp()).toBe('192.168.178.50');
+    });
+
+    it('falls back to localhost when no suitable interface found', () => {
+      vi.mocked(fsMock.accessSync).mockImplementation(() => {
+        throw new Error();
+      });
+      vi.mocked(fsMock.readFileSync).mockImplementation(() => {
+        throw new Error();
+      });
+      vi.mocked(osMock.networkInterfaces).mockReturnValue({
+        lo: [{ family: 'IPv4', address: '127.0.0.1', internal: true }],
+      });
+      expect(detectLocalIp()).toBe('localhost');
+    });
+  });
+
+  describe('guessBaseUrl', () => {
+    it('returns correctly formatted URL', () => {
+      process.env.FREDY_DOCKER = '1';
+      expect(guessBaseUrl(9998)).toBe('http://172.17.0.1:9998');
+    });
+
+    it('includes custom port', () => {
+      process.env.FREDY_DOCKER = '1';
+      expect(guessBaseUrl(8080)).toBe('http://172.17.0.1:8080');
+    });
+  });
+});