chore: coverage

packages/image-shrink/.gitignore

@@ -1,2 +1,3 @@
 LICENSE
 src/test/snapshots
+coverage

packages/image-shrink/package.json

@@ -19,7 +19,7 @@
   "scripts": {
     "prepack": "cp ../../LICENSE ./LICENSE",
     "clean": "rimraf dist",
-    "test": "npx playwright install-deps chromium && vitest --run",
+    "test": "npx playwright install-deps chromium && vitest --run  --coverage",
     "test:watch": "npx playwright install-deps chromium && vitest",
     "prebuild": "npm run clean",
     "build": "npm run build:types && npm run build:compile",
@@ -47,6 +47,7 @@
     "@imagemagick/magick-wasm": "^0.0.28",
     "@types/content-type": "^1.1.8",
     "@vitest/browser": "^1.2.2",
+    "@vitest/coverage-istanbul": "^1.3.0",
     "playwright": "^1.41.2",
     "raw-body": "^2.5.2",
     "ts-node": "^10.8.1",

packages/image-shrink/src/utils/image/imageLoader.ts

@@ -14,7 +14,7 @@ export const processImage = (
         resolve(image)
       })
       image.addEventListener('error', () => {
-        reject(image)
+        reject(new Error('Failed to load image. Probably not an image.'))
       })
     }
   })

packages/image-shrink/src/utils/shrinkFile.test.ts

@@ -32,7 +32,25 @@ describe('shrinkFile', () => {
     expect(height).toBe(500)
   })
 
-  it("should skip shrink if it's not required", async () => {
+  it('should throw a error if the passed file is not an image', async () => {
+    const originalFile = new Blob(['Hello world'], { type: 'text/plain' })
+    const promise = shrinkFile(originalFile, {
+      size: 100 * 100
+    })
+    expect(promise).rejects.toThrowError('not an image')
+  })
+
+  it('should throw a error if unable to convert canvas to blob', async () => {
+    const originalFile = await loadImageAsBlob(
+      () => import('../test/samples/line.jpg')
+    )
+    const promise = shrinkFile(originalFile, {
+      size: 100 * 100
+    })
+    expect(promise).rejects.toThrowError('Failed to convert canvas to blob')
+  })
+
+  it("should skip shrink if it's not required and throw a error", async () => {
     const originalFile = await loadImageAsBlob(
       () => import('../test/samples/2000x2000.jpeg')
     )

packages/image-shrink/src/utils/shrinkImage.ts

@@ -31,6 +31,7 @@ export const shrinkImage = (
       const supportNative = 'imageSmoothingQuality' in ctx
 
       // native scaling on ios gives blurry results
+      // TODO: check if it's still true
       const useNativeScaling = supportNative && !isIOS() && !isIpadOS
 
       return useNativeScaling

packages/image-shrink/vitest.config.ts

@@ -33,6 +33,9 @@ export default defineConfig({
   plugins: [uploadPlugin()],
   test: {
     testTimeout: 100000,
+    coverage: {
+      provider: 'istanbul'
+    },
     browser: {
       enabled: true,
       name: 'chromium',