test(e2e): add very small pixel tolerance

exadel-inc · Jun 20, 2024 · 5397fe0 · 5397fe0
1 parent 59caec2
commit 5397fe0
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/e2e/setup/scenarios.screenshot.ts b/e2e/setup/scenarios.screenshot.ts
@@ -33,5 +33,5 @@ cucumber.defineRule('check if the screenshot is exactly equal to the snapshotted
 cucumber.defineRule('check if the screenshot is equal to the snapshotted version', async ({screenshots}: TestEnv) => {
   if (!screenshots.length) throw new Error('E2E: there is no any screenshot, make sure you have "Take a screenshot" before');
   const image = screenshots.pop();
-  expect(image).toMatchImageSnapshot({threshold: 0.1, alpha: 0.1});
+  expect(image).toMatchImageSnapshot({threshold: 0.1});
 });
diff --git a/e2e/setup/serializers/image/snapshot-matcher.ts b/e2e/setup/serializers/image/snapshot-matcher.ts
@@ -15,6 +15,7 @@ export class SnapshotMatcher {
 
   protected static readonly defaultOptions: SnapshotMatcherOptions = {
     diffMask: false,
+    alpha: 0,
     diffColorAlt: [255, 255, 0],
     includeAA: true,
     threshold: 0.01
@@ -65,7 +66,7 @@ export class SnapshotMatcher {
     const {width, height} = prevImg.info;
     const diffBuffer = Buffer.alloc(width * height * 4);
     const numDiffPixel = pixelmatch(prevImg.data, currImg.data, diffBuffer, width, height, this.config);
-    if (numDiffPixel > 0) diffPath = await this.saveDiff(prevImg, currImg, diffBuffer);
+    if (numDiffPixel > width * height * 0.0001) diffPath = await this.saveDiff(prevImg, currImg, diffBuffer);
     return diffPath;
   }