Add processFileHandlers tests

Author: orbital17

packages/core/src/spec/lib/FileHandlerSpec.ts

@@ -0,0 +1,102 @@
+/*
+* Copyright 2025 Google Inc. All Rights Reserved.
+*
+*  Licensed under the Apache License, Version 2.0 (the "License");
+*  you may not use this file except in compliance with the License.
+*  You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+*  Unless required by applicable law or agreed to in writing, software
+*  distributed under the License is distributed on an "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*  See the License for the specific language governing permissions and
+*  limitations under the License.
+*/
+
+import {
+  processFileHandlers,
+  FileHandler,
+  FileHandlerJson,
+} from '../../lib/types/FileHandler';
+
+describe('FileHandler', () => {
+  describe('#processFileHandlers', () => {
+    it('Accepts valid file handlers', () => {
+      const startUrl = new URL('https://test.com/app/start');
+      const scopeUrl = new URL('https://test.com/app');
+      const testHandlers: FileHandlerJson[] = [
+        {
+          'action': '/app',
+          'accept': {
+            'text/plain': ['.txt'],
+          },
+        },
+        {
+          'action': '/app?image',
+          'accept': {
+            'image/jpeg': ['.jpg', 'jpeg'],
+          },
+        },
+      ];
+      const expectedHandlers: FileHandler[] = [
+        {
+          actionUrl: 'https://test.com/app',
+          mimeTypes: ['text/plain'],
+        },
+        {
+          actionUrl: 'https://test.com/app?image',
+          mimeTypes: ['image/jpeg'],
+        },
+      ];
+      const processedHandlers = processFileHandlers(testHandlers, startUrl, scopeUrl);
+      expect(processedHandlers).toEqual(expectedHandlers);
+    });
+    it('Rejects invalid file handlers', () => {
+      const startUrl = new URL('https://test.com/app/start');
+      const scopeUrl = new URL('https://test.com/app');
+      const testHandlers: FileHandlerJson[] = [
+        {
+          'action': '/app',
+        },
+        {
+          'accept': {
+            'text/plain': ['.txt'],
+          },
+        },
+        {
+          'action': '/app?image',
+          'accept': {},
+        },
+      ];
+      const processedHandlers = processFileHandlers(testHandlers, startUrl, scopeUrl);
+      expect(processedHandlers).toEqual([]);
+    });
+    it('Rejects invalid action URLs', () => {
+      const startUrl = new URL('https://test.com/app/start');
+      const scopeUrl = new URL('https://test.com/app');
+      const testHandlers: FileHandlerJson[] = [
+        {
+          'action': '/', // not withing the scope
+          'accept': {
+            'text/plain': ['.txt'],
+          },
+        },
+        {
+          'action': 'http://test.com/app', // invalid protocol
+          'accept': {
+            'text/plain': ['.txt'],
+          },
+        },
+        {
+          'action': 'http://a.test.com/app', // invalid origin
+          'accept': {
+            'text/plain': ['.txt'],
+          },
+        },
+      ];
+      const processedHandlers = processFileHandlers(testHandlers, startUrl, scopeUrl);
+      expect(processedHandlers).toEqual([]);
+    });
+  });
+});

packages/core/src/spec/lib/features/FileHandlingFeatureSpec.ts

@@ -18,8 +18,7 @@ import {FileHandlingFeature} from '../../../lib/features/FileHandlingFeature';
 
 describe('FileHandlingFeature', () => {
   describe('#constructor', () => {
-    // variables is the only field dynamically generated.
-    it('Generates correct variables for application', () => {
+    it('Populates templates from the twaManifest correctly', () => {
       const fileHandlers = [
         {
           'actionUrl': 'https://pwa-directory.com/',