test(amazonq): add unit tests for authUtil (#7263)

## Problem
There are no unit tests for the new AuthUtil on Flare LSP

## Solution
* Add unit test for core AuthUtil functionality
* Create a test util for all tests where AuthUtil is needed
* Ensure all tests that interact with the AuthUtil consume the new test
util
* Add destroy method to the AuthUtil class to simplify cleanup for unit
tests

---

- Treat all work as PUBLIC. Private `feature/x` branches will not be
squash-merged at release time.
- Your code changes must meet the guidelines in
[CONTRIBUTING.md](https://github.com/aws/aws-toolkit-vscode/blob/master/CONTRIBUTING.md#guidelines).
- License: I confirm that my contribution is made under the terms of the
Apache 2.0 license.

Author: opieter-aws

packages/amazonq/test/unit/amazonq/backend_amazonq.test.ts

@@ -16,9 +16,8 @@ describe('Amazon Q Login', async function () {
     let sandbox: sinon.SinonSandbox
     let backend: backendAmazonQ.AmazonQLoginWebview
 
-    await createTestAuthUtil()
-
-    beforeEach(function () {
+    beforeEach(async function () {
+        await createTestAuthUtil()
         sandbox = sinon.createSandbox()
         backend = new backendAmazonQ.AmazonQLoginWebview()
     })
@@ -101,6 +100,8 @@ describe('Amazon Q Login', async function () {
     })
 
     it('signs out of reauth and emits telemetry', async function () {
+        await getStartUrl.connectToEnterpriseSso(startUrl, region)
+
         await backend.signout()
 
         assert.ok(!AuthUtil.instance.isConnected())

packages/amazonq/test/unit/codewhisperer/commands/invokeRecommendation.test.ts

@@ -5,7 +5,7 @@
 
 import assert from 'assert'
 import * as sinon from 'sinon'
-import { resetCodeWhispererGlobalVariables, createMockTextEditor } from 'aws-core-vscode/test'
+import { resetCodeWhispererGlobalVariables, createMockTextEditor, createTestAuthUtil } from 'aws-core-vscode/test'
 import {
     ConfigurationEntry,
     invokeRecommendation,
@@ -20,6 +20,7 @@ describe('invokeRecommendation', function () {
         let mockClient: DefaultCodeWhispererClient
 
         beforeEach(async function () {
+            await createTestAuthUtil()
             await resetCodeWhispererGlobalVariables()
             getRecommendationStub = sinon.stub(InlineCompletionService.instance, 'getPaginatedRecommendation')
         })

packages/amazonq/test/unit/codewhisperer/region/regionProfileManager.test.ts

@@ -23,8 +23,6 @@ describe('RegionProfileManager', async function () {
         description: 'foo description',
     }
 
-    await createTestAuthUtil()
-
     async function setupConnection(type: 'builderId' | 'idc') {
         if (type === 'builderId') {
             await AuthUtil.instance.login(constants.builderIdStartUrl, region)
@@ -37,7 +35,8 @@ describe('RegionProfileManager', async function () {
         }
     }
 
-    beforeEach(function () {
+    beforeEach(async function () {
+        await createTestAuthUtil()
         regionProfileManager = new RegionProfileManager(AuthUtil.instance)
     })
 

packages/amazonq/test/unit/codewhisperer/service/inlineCompletionService.test.ts

@@ -19,7 +19,12 @@ import {
     listCodeWhispererCommandsId,
     DefaultCodeWhispererClient,
 } from 'aws-core-vscode/codewhisperer'
-import { createMockTextEditor, resetCodeWhispererGlobalVariables, createMockDocument } from 'aws-core-vscode/test'
+import {
+    createMockTextEditor,
+    resetCodeWhispererGlobalVariables,
+    createMockDocument,
+    createTestAuthUtil,
+} from 'aws-core-vscode/test'
 
 describe('inlineCompletionService', function () {
     beforeEach(async function () {
@@ -192,6 +197,7 @@ describe('codewhisperer status bar', function () {
     }
 
     beforeEach(async function () {
+        await createTestAuthUtil()
         await resetCodeWhispererGlobalVariables()
         sandbox = sinon.createSandbox()
         statusBar = new TestStatusBar()

packages/amazonq/test/unit/codewhisperer/service/keyStrokeHandler.test.ts

@@ -9,6 +9,7 @@ import * as sinon from 'sinon'
 import * as codewhispererSdkClient from 'aws-core-vscode/codewhisperer'
 import {
     createMockTextEditor,
+    createTestAuthUtil,
     createTextDocumentChangeEvent,
     resetCodeWhispererGlobalVariables,
 } from 'aws-core-vscode/test'
@@ -160,13 +161,16 @@ describe('keyStrokeHandler', function () {
 
     describe('invokeAutomatedTrigger', function () {
         let mockClient: codewhispererSdkClient.DefaultCodeWhispererClient
+
         beforeEach(async function () {
+            await createTestAuthUtil()
             sinon.restore()
             mockClient = new codewhispererSdkClient.DefaultCodeWhispererClient()
             await resetCodeWhispererGlobalVariables()
             sinon.stub(mockClient, 'listRecommendations')
             sinon.stub(mockClient, 'generateRecommendations')
         })
+
         afterEach(function () {
             sinon.restore()
         })