jest-image-snapshot - npm Package Compare versions

Comparing version 2.8.0 to 2.8.1

__tests__/integration.spec.js

@@ -19,3 +19,3 @@ /*
 const uniqueId = require('lodash/uniqueId');
-const isPng = require('is-png');
+const sizeOf = require('image-size');
 const { SnapshotState } = require('jest-snapshot');
@@ -231,7 +231,62 @@ const { toMatchImageSnapshot } = require('../src');
 
-      const imageBuffer = fs.readFileSync(pathToResultImage);
       // just because file was written does not mean it is a png image
-      expect(isPng(imageBuffer)).toBe(true);
+      expect(sizeOf(pathToResultImage)).toHaveProperty('type', 'png');
     });
 
+    it('writes a result image for failing tests with horizontal layout', () => {
+      const customSnapshotIdentifier = getIdentifierIndicatingCleanupIsRequired();
+      const pathToResultImage = path.join(__dirname, diffOutputDir(), `${customSnapshotIdentifier}-diff.png`);
+      // First we need to write a new snapshot image
+      expect(
+        () => expect(imageData).toMatchImageSnapshot({
+          customSnapshotIdentifier,
+          diffDirection: 'horizontal',
+        })
+      ).not.toThrowError();
+
+      // then test against a different image
+      expect(
+        () => expect(failImageData).toMatchImageSnapshot({
+          customSnapshotIdentifier,
+          diffDirection: 'horizontal',
+        })
+      ).toThrow();
+
+      expect(fs.existsSync(pathToResultImage)).toBe(true);
+
+      expect(sizeOf(pathToResultImage)).toMatchObject({
+        width: 300,
+        height: 100,
+        type: 'png',
+      });
+    });
+
+    it('writes a result image for failing tests with vertical layout', () => {
+      const customSnapshotIdentifier = getIdentifierIndicatingCleanupIsRequired();
+      const pathToResultImage = path.join(__dirname, diffOutputDir(), `${customSnapshotIdentifier}-diff.png`);
+      // First we need to write a new snapshot image
+      expect(
+        () => expect(imageData).toMatchImageSnapshot({
+          customSnapshotIdentifier,
+          diffDirection: 'vertical',
+        })
+      ).not.toThrowError();
+
+      // then test against a different image
+      expect(
+        () => expect(failImageData).toMatchImageSnapshot({
+          customSnapshotIdentifier,
+          diffDirection: 'vertical',
+        })
+      ).toThrow();
+
+      expect(fs.existsSync(pathToResultImage)).toBe(true);
+
+      expect(sizeOf(pathToResultImage)).toMatchObject({
+        width: 100,
+        height: 300,
+        type: 'png',
+      });
+    });
+
     it('removes result image from previous test runs for the same snapshot', () => {
@@ -238,0 +293,0 @@ const customSnapshotIdentifier = getIdentifierIndicatingCleanupIsRequired();

package.json

 {
   "name": "jest-image-snapshot",
-  "version": "2.8.0",
+  "version": "2.8.1",
   "description": "Jest matcher for image comparisons. Most commonly used for visual regression testing.",
@@ -48,4 +48,4 @@ "main": "src/index.js",
     "eslint-config-amex": "^7.0.0",
-    "is-png": "^1.1.0",
-    "jest": "^23.0.0",
+    "image-size": "^0.7.1",
+    "jest": "^24.0.0",
     "mock-spawn": "^0.2.6",
@@ -64,4 +64,4 @@ "jest-snapshot": "^23.0.0"
   "peerDependencies": {
-    "jest": ">=20 <=23"
+    "jest": ">=20 <=24"
   }
 }

README.md

@@ -14,3 +14,3 @@ # jest-image-snapshot
 
-  Please note that `Jest` `>=20 <=23` is a peerDependency. `jest-image-snapshot` will **not** work with anything below Jest 20.x.x
+  Please note that `Jest` `>=20 <=24` is a peerDependency. `jest-image-snapshot` will **not** work with anything below Jest 20.x.x
 
@@ -17,0 +17,0 @@ ## Usage:

src/diff-snapshot.js

@@ -174,3 +174,3 @@ /*
       const composer = new ImageComposer({
-        diffDirection,
+        direction: diffDirection,
       });
@@ -177,0 +177,0 @@

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Fixed alerts

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Improved metrics

Total package byte prevSize

3162821

increased by0.06%

Lines of code

1812

increased by2.66%

No dependency changes