(#68) Updated scaled image search

Author: s1hofmann

Diff for: lib/provider/opencv/__mocks__/needle.png

@@ -10,38 +10,42 @@ describe("Template-matching finder", () => {
     // GIVEN
     const imageLoader = new ImageReader();
     const SUT = new TemplateMatchingFinder();
-    const imagePath = path.resolve(__dirname, "./__mocks__/mouse.png");
-    const needle = await imageLoader.load(imagePath);
+    const haystackPath = path.resolve(__dirname, "./__mocks__/mouse.png");
+    const needlePath = path.resolve(__dirname, "./__mocks__/needle.png");
+    const haystack = await imageLoader.load(haystackPath);
+    const needle = await imageLoader.load(needlePath);
     const minConfidence = 0.99;
-    const searchRegion = new Region(0, 0, needle.width, needle.height);
-    const haystack = new Image(needle.width, needle.height, needle.data, 3);
-    const matchRequest = new MatchRequest(haystack, imagePath, searchRegion, minConfidence);
+    const searchRegion = new Region(0, 0, haystack.width, haystack.height);
+    const matchRequest = new MatchRequest(haystack, needlePath, searchRegion, minConfidence);
+    const expectedResult = new Region(16, 31, needle.width, needle.height);
 
     // WHEN
     const result = await SUT.findMatch(matchRequest);
 
     // THEN
     expect(result.confidence).toBeGreaterThanOrEqual(minConfidence);
-    expect(result.location).toEqual(searchRegion);
+    expect(result.location).toEqual(expectedResult);
   });
 
   it("findMatch should return a match within a search region when present in image", async () => {
     // GIVEN
     const imageLoader = new ImageReader();
     const SUT = new TemplateMatchingFinder();
-    const imagePath = path.resolve(__dirname, "./__mocks__/mouse.png");
-    const needle = await imageLoader.load(imagePath);
+    const haystackPath = path.resolve(__dirname, "./__mocks__/mouse.png");
+    const needlePath = path.resolve(__dirname, "./__mocks__/needle.png");
+    const haystack = await imageLoader.load(haystackPath);
+    const needle = await imageLoader.load(needlePath);
     const minConfidence = 0.99;
-    const searchRegion = new Region(10, 20, 100, 100);
-    const haystack = new Image(needle.width, needle.height, needle.data, 3);
-    const matchRequest = new MatchRequest(haystack, imagePath, searchRegion, minConfidence);
+    const searchRegion = new Region(10, 20, 140, 100);
+    const matchRequest = new MatchRequest(haystack, needlePath, searchRegion, minConfidence);
+    const expectedResult = new Region(6, 11, needle.width, needle.height);
 
     // WHEN
     const result = await SUT.findMatch(matchRequest);
 
     // THEN
     expect(result.confidence).toBeGreaterThanOrEqual(minConfidence);
-    expect(result.location).toEqual(searchRegion);
+    expect(result.location).toEqual(expectedResult);
   });
 
   it("findMatch should throw on invalid image paths", async () => {