feat(tools): 2.0 phase 5 wave 5b - ai pool: ocr-pdf, transcription, background composites (5 tools) (#226)

tests/integration/background-replace.test.ts

@@ -0,0 +1,132 @@
+/**
+ * Integration tests for the background-replace tool (/api/v1/tools/background-replace).
+ *
+ * This tool reuses the rembg bundle (background-removal). The 501 gate fires
+ * before any settings validation when the bundle is absent. Locally and in CI,
+ * the bundle is never installed, so the 501 surface is always exercised.
+ *
+ * The compositeOnColor helper has dedicated unit coverage in
+ * tests/unit/api/background-composite.test.ts. The rembg model never runs
+ * locally; bundle-gated happy paths are in a skipped describe.
+ */
+
+import { readFileSync } from "node:fs";
+import { join } from "node:path";
+import { afterAll, beforeAll, describe, expect, it } from "vitest";
+import { buildTestApp, createMultipartPayload, loginAsAdmin, type TestApp } from "./test-server.js";
+
+const FIXTURES = join(__dirname, "..", "fixtures");
+const PNG = readFileSync(join(FIXTURES, "test-200x150.png"));
+
+let testApp: TestApp;
+let app: TestApp["app"];
+let adminToken: string;
+
+beforeAll(async () => {
+  testApp = await buildTestApp();
+  app = testApp.app;
+  adminToken = await loginAsAdmin(app);
+}, 30_000);
+
+afterAll(async () => {
+  await testApp.cleanup();
+}, 10_000);
+
+describe("background-replace", () => {
+  // -- 501 gate (always fires locally: background-removal bundle never installed) --
+
+  it("returns 501 FEATURE_NOT_INSTALLED when bundle is absent", async () => {
+    const { body, contentType } = createMultipartPayload([
+      { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
+      { name: "settings", content: JSON.stringify({}) },
+    ]);
+
+    const res = await app.inject({
+      method: "POST",
+      url: "/api/v1/tools/background-replace",
+      headers: {
+        authorization: `Bearer ${adminToken}`,
+        "content-type": contentType,
+      },
+      body,
+    });
+
+    expect(res.statusCode).toBe(501);
+    const json = JSON.parse(res.body);
+    expect(json.code).toBe("FEATURE_NOT_INSTALLED");
+    expect(json.feature).toBe("background-removal");
+    expect(json.featureName).toBe("Background Removal");
+    expect(json.estimatedSize).toBeDefined();
+  });
+
+  // -- Auth gate --
+
+  it("rejects unauthenticated requests (401)", async () => {
+    const { body, contentType } = createMultipartPayload([
+      { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
+      { name: "settings", content: JSON.stringify({}) },
+    ]);
+
+    const res = await app.inject({
+      method: "POST",
+      url: "/api/v1/tools/background-replace",
+      headers: { "content-type": contentType },
+      body,
+    });
+
+    expect(res.statusCode).toBe(401);
+  });
+
+  // -- Validation: 501 fires before settings parse, so bad hex also 501s --
+
+  it("returns 501 even with invalid color hex (gate fires first)", async () => {
+    const { body, contentType } = createMultipartPayload([
+      { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
+      { name: "settings", content: JSON.stringify({ color: "not-a-hex" }) },
+    ]);
+
+    const res = await app.inject({
+      method: "POST",
+      url: "/api/v1/tools/background-replace",
+      headers: {
+        authorization: `Bearer ${adminToken}`,
+        "content-type": contentType,
+      },
+      body,
+    });
+
+    // 501 because the bundle gate fires before settings validation
+    expect(res.statusCode).toBe(501);
+    const json = JSON.parse(res.body);
+    expect(json.code).toBe("FEATURE_NOT_INSTALLED");
+  });
+
+  // -- Bundle-gated happy path (skipped: background-removal bundle is 4-5 GB) --
+
+  // The background-removal bundle is not installed in any verification environment.
+  // These tests exist for future in-container runs after bundle install.
+  // The 501 contract + compositeOnColor unit tests carry the verification.
+  describe.skip("with background-removal bundle installed", () => {
+    it("replaces background with color (202 + async)", async () => {
+      const { body, contentType } = createMultipartPayload([
+        { name: "file", filename: "test.png", contentType: "image/png", content: PNG },
+        { name: "settings", content: JSON.stringify({ color: "#ff0000" }) },
+      ]);
+
+      const res = await app.inject({
+        method: "POST",
+        url: "/api/v1/tools/background-replace",
+        headers: {
+          authorization: `Bearer ${adminToken}`,
+          "content-type": contentType,
+        },
+        body,
+      });
+
+      expect(res.statusCode).toBe(202);
+      const json = JSON.parse(res.body);
+      expect(json.jobId).toBeDefined();
+      expect(json.async).toBe(true);
+    }, 300_000);
+  });
+});