Merge pull request #6 from navapbc/george/test-blur-detector

app/tests/utils/blur-detector.spec.ts

@@ -0,0 +1,60 @@
+import {
+  afterEach,
+  beforeEach,
+  describe,
+  expect,
+  it,
+  jest,
+} from "@jest/globals";
+
+import BlurryDetector, {
+  BlurryDetectorReport,
+} from "../../src/utils/blur-detector";
+
+// Adjust the import path accordingly
+
+describe("./src/utils/blur-detector.ts", () => {
+  let blurryDetector: BlurryDetector;
+
+  beforeEach(() => {
+    blurryDetector = new BlurryDetector(); // Using the default threshold of 300
+  });
+
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it("should detect a clear image", async () => {
+    // Mock computeLaplacianVariance to return a high variance indicating a clear image
+    blurryDetector.computeLaplacianVariance = jest.fn(() => {
+      return Promise.resolve(450);
+    });
+
+    const result: BlurryDetectorReport = await blurryDetector.analyse(
+      "path/to/clear/image.jpg"
+    );
+
+    expect(result).toEqual({
+      imagePath: "path/to/clear/image.jpg",
+      isBlurry: false,
+      score: 450,
+    });
+  });
+
+  it("should detect a blurry image", async () => {
+    // Mock computeLaplacianVariance to return a low variance indicating a blurry image
+    blurryDetector.computeLaplacianVariance = jest.fn(() => {
+      return Promise.resolve(220);
+    });
+
+    const result: BlurryDetectorReport = await blurryDetector.analyse(
+      "path/to/blurry/image.jpg"
+    );
+
+    expect(result).toEqual({
+      imagePath: "path/to/blurry/image.jpg",
+      isBlurry: true,
+      score: 220,
+    });
+  });
+});