fix(tests): Cannot find module .../amazonq-webview.css #4804

Problem:
- a css file was added into mynah ui and jsdom can't load external css files so the e2e tests fail to load

    Error: Cannot find module '../../../../resources/css/amazonq-webview.css'
    Require stack:
    - /codebuild/output/src201842960/src/github.com/aws/aws-toolkit-vscode/packages/core/dist/src/amazonq/webview/ui/main.js
    - /codebuild/output/src201842960/src/github.com/aws/aws-toolkit-vscode/packages/core/dist/src/testE2E/amazonq/framework/framework.js
    - /codebuild/output/src201842960/src/github.com/aws/aws-toolkit-vscode/packages/core/dist/src/testE2E/amazonq/featureDev.test.js
    - /codebuild/output/src201842960/src/github.com/aws/aws-toolkit-vscode/node_modules/mocha/lib/mocha.js
    - /codebuild/output/src201842960/src/github.com/aws/aws-toolkit-vscode/node_modules/mocha/index.js
    - /codebuild/output/src201842960/src/github.com/aws/aws-toolkit-vscode/packages/core/dist/src/test/testRunner.js
    - /codebuild/output/src201842960/src/github.com/aws/aws-toolkit-vscode/packages/core/dist/src/testE2E/index.js
    - /tmp/.vscode-test/vscode-linux-x64-1.88.1/resources/app/out/vs/loader.js
    - /tmp/.vscode-test/vscode-linux-x64-1.88.1/resources/app/out/bootstrap-amd.js
    - /tmp/.vscode-test/vscode-linux-x64-1.88.1/resources/app/out/bootstrap-fork.js
        at Module._resolveFilename (node:internal/modules/cjs/loader:1084:15)
        at Function.i._resolveFilename (node:electron/js2c/utility_init:2:13405)
        at Function.Module._resolveFilename.sharedData.moduleResolveFilenameHook.installedValue [as _resolveFilename] (/codebuild/output/src201842960/src/github.com/aws/aws-toolkit-vscode/node_modules/@cspotcode/source-map-support/source-map-support.js:811:30)
        at Module._load (node:internal/modules/cjs/loader:929:27)
        at Function.c._load (node:electron/js2c/node_init:2:13672)
        at Function.h._load (/tmp/.vscode-test/vscode-linux-x64-1.88.1/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:175:5602)
        at Function.i._load (/tmp/.vscode-test/vscode-linux-x64-1.88.1/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:172:29719)
        at Function.t._load (/tmp/.vscode-test/vscode-linux-x64-1.88.1/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:137:35279)
        at Module.require (node:internal/modules/cjs/loader:1150:19)

Solution:
- HACK: ignore amazonq-webview.css in the module loader

Author: jpinkney-aws

packages/core/src/testE2E/amazonq/featureDev.test.ts

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+import { overrideRequire, resetRequire } from './framework/setup'
+overrideRequire()
+
 import assert from 'assert'
 import { qTestingFramework } from './framework/framework'
 import sinon from 'sinon'
@@ -52,6 +55,10 @@ describe('Amazon Q Feature Dev', function () {
         sinon.restore()
     })
 
+    after(() => {
+        resetRequire()
+    })
+
     describe('quick action availability', () => {
         it('Shows /dev when feature dev is enabled', async () => {
             const command = tab.findCommand('/dev')

packages/core/src/testE2E/amazonq/framework/setup.ts

@@ -0,0 +1,29 @@
+/*!
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import Module from 'module'
+
+const originalRequire = Module.prototype.require
+
+export function overrideRequire() {
+    Module.prototype.require = new Proxy(Module.prototype.require, {
+        apply(target, thisArg, argArray) {
+            const name = argArray[0]
+
+            /**
+             * HACK: css can't be loaded into jsdom so we have to ignore it
+             */
+            if (name.endsWith('amazonq-webview.css')) {
+                return {}
+            }
+
+            return Reflect.apply(target, thisArg, argArray)
+        },
+    })
+}
+
+export function resetRequire() {
+    Module.prototype.require = originalRequire
+}