test(amazonq): add back test files for inline completion codes - part 1 (#8000)

## Problem

add back test files for inline completion codes - part 1

Test files for #7974

Ref: #7480


---

- 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: atonaamz

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

@@ -0,0 +1,43 @@
+/*!
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import assert from 'assert'
+import * as sinon from 'sinon'
+import { resetCodeWhispererGlobalVariables, createMockTextEditor } from 'aws-core-vscode/test'
+import {
+    ConfigurationEntry,
+    invokeRecommendation,
+    InlineCompletionService,
+    isInlineCompletionEnabled,
+    DefaultCodeWhispererClient,
+} from 'aws-core-vscode/codewhisperer'
+
+describe('invokeRecommendation', function () {
+    describe('invokeRecommendation', function () {
+        let getRecommendationStub: sinon.SinonStub
+        let mockClient: DefaultCodeWhispererClient
+
+        beforeEach(async function () {
+            await resetCodeWhispererGlobalVariables()
+            getRecommendationStub = sinon.stub(InlineCompletionService.instance, 'getPaginatedRecommendation')
+        })
+
+        afterEach(function () {
+            sinon.restore()
+        })
+
+        it('Should call getPaginatedRecommendation with OnDemand as trigger type when inline completion is enabled', async function () {
+            const mockEditor = createMockTextEditor()
+            const config: ConfigurationEntry = {
+                isShowMethodsEnabled: true,
+                isManualTriggerEnabled: true,
+                isAutomatedTriggerEnabled: true,
+                isSuggestionsWithCodeReferencesEnabled: true,
+            }
+            await invokeRecommendation(mockEditor, mockClient, config)
+            assert.strictEqual(getRecommendationStub.called, isInlineCompletionEnabled())
+        })
+    })
+})

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

@@ -0,0 +1,64 @@
+/*!
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import assert from 'assert'
+import * as vscode from 'vscode'
+import * as sinon from 'sinon'
+import { onAcceptance, AcceptedSuggestionEntry, session, CodeWhispererTracker } from 'aws-core-vscode/codewhisperer'
+import { resetCodeWhispererGlobalVariables, createMockTextEditor } from 'aws-core-vscode/test'
+
+describe('onAcceptance', function () {
+    describe('onAcceptance', function () {
+        beforeEach(async function () {
+            await resetCodeWhispererGlobalVariables()
+            session.reset()
+        })
+
+        afterEach(function () {
+            sinon.restore()
+            session.reset()
+        })
+
+        it('Should enqueue an event object to tracker', async function () {
+            const mockEditor = createMockTextEditor()
+            const trackerSpy = sinon.spy(CodeWhispererTracker.prototype, 'enqueue')
+            const fakeReferences = [
+                {
+                    message: '',
+                    licenseName: 'MIT',
+                    repository: 'http://github.com/fake',
+                    recommendationContentSpan: {
+                        start: 0,
+                        end: 10,
+                    },
+                },
+            ]
+            await onAcceptance({
+                editor: mockEditor,
+                range: new vscode.Range(new vscode.Position(1, 0), new vscode.Position(1, 26)),
+                effectiveRange: new vscode.Range(new vscode.Position(1, 0), new vscode.Position(1, 26)),
+                acceptIndex: 0,
+                recommendation: "print('Hello World!')",
+                requestId: '',
+                sessionId: '',
+                triggerType: 'OnDemand',
+                completionType: 'Line',
+                language: 'python',
+                references: fakeReferences,
+            })
+            const actualArg = trackerSpy.getCall(0).args[0] as AcceptedSuggestionEntry
+            assert.ok(trackerSpy.calledOnce)
+            assert.strictEqual(actualArg.originalString, 'def two_sum(nums, target):')
+            assert.strictEqual(actualArg.requestId, '')
+            assert.strictEqual(actualArg.sessionId, '')
+            assert.strictEqual(actualArg.triggerType, 'OnDemand')
+            assert.strictEqual(actualArg.completionType, 'Line')
+            assert.strictEqual(actualArg.language, 'python')
+            assert.deepStrictEqual(actualArg.startPosition, new vscode.Position(1, 0))
+            assert.deepStrictEqual(actualArg.endPosition, new vscode.Position(1, 26))
+            assert.strictEqual(actualArg.index, 0)
+        })
+    })
+})

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

@@ -0,0 +1,43 @@
+/*!
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import assert from 'assert'
+import * as vscode from 'vscode'
+import * as sinon from 'sinon'
+import { resetCodeWhispererGlobalVariables, createMockTextEditor } from 'aws-core-vscode/test'
+import { onInlineAcceptance, RecommendationHandler, session } from 'aws-core-vscode/codewhisperer'
+
+describe('onInlineAcceptance', function () {
+    describe('onInlineAcceptance', function () {
+        beforeEach(async function () {
+            await resetCodeWhispererGlobalVariables()
+            session.reset()
+        })
+
+        afterEach(function () {
+            sinon.restore()
+            session.reset()
+        })
+
+        it('Should dispose inline completion provider', async function () {
+            const mockEditor = createMockTextEditor()
+            const spy = sinon.spy(RecommendationHandler.instance, 'disposeInlineCompletion')
+            await onInlineAcceptance({
+                editor: mockEditor,
+                range: new vscode.Range(new vscode.Position(1, 0), new vscode.Position(1, 21)),
+                effectiveRange: new vscode.Range(new vscode.Position(1, 0), new vscode.Position(1, 21)),
+                acceptIndex: 0,
+                recommendation: "print('Hello World!')",
+                requestId: '',
+                sessionId: '',
+                triggerType: 'OnDemand',
+                completionType: 'Line',
+                language: 'python',
+                references: undefined,
+            })
+            assert.ok(spy.calledWith())
+        })
+    })
+})

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

@@ -0,0 +1,173 @@
+/*!
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import * as vscode from 'vscode'
+import assert from 'assert'
+import * as sinon from 'sinon'
+import {
+    InlineCompletionService,
+    ReferenceInlineProvider,
+    RecommendationHandler,
+    ConfigurationEntry,
+    CWInlineCompletionItemProvider,
+    session,
+    DefaultCodeWhispererClient,
+} from 'aws-core-vscode/codewhisperer'
+import { createMockTextEditor, resetCodeWhispererGlobalVariables, createMockDocument } from 'aws-core-vscode/test'
+
+describe('inlineCompletionService', function () {
+    beforeEach(async function () {
+        await resetCodeWhispererGlobalVariables()
+    })
+
+    describe('getPaginatedRecommendation', function () {
+        const config: ConfigurationEntry = {
+            isShowMethodsEnabled: true,
+            isManualTriggerEnabled: true,
+            isAutomatedTriggerEnabled: true,
+            isSuggestionsWithCodeReferencesEnabled: true,
+        }
+
+        let mockClient: DefaultCodeWhispererClient
+
+        beforeEach(async function () {
+            mockClient = new DefaultCodeWhispererClient()
+            await resetCodeWhispererGlobalVariables()
+        })
+
+        afterEach(function () {
+            sinon.restore()
+        })
+
+        it('should call checkAndResetCancellationTokens before showing inline and next token to be null', async function () {
+            const mockEditor = createMockTextEditor()
+            sinon.stub(RecommendationHandler.instance, 'getRecommendations').resolves({
+                result: 'Succeeded',
+                errorMessage: undefined,
+                recommendationCount: 1,
+            })
+            const checkAndResetCancellationTokensStub = sinon.stub(
+                RecommendationHandler.instance,
+                'checkAndResetCancellationTokens'
+            )
+            session.recommendations = [{ content: "\n\t\tconsole.log('Hello world!');\n\t}" }, { content: '' }]
+            await InlineCompletionService.instance.getPaginatedRecommendation(
+                mockClient,
+                mockEditor,
+                'OnDemand',
+                config
+            )
+            assert.ok(checkAndResetCancellationTokensStub.called)
+            assert.strictEqual(RecommendationHandler.instance.hasNextToken(), false)
+        })
+    })
+
+    describe('clearInlineCompletionStates', function () {
+        it('should remove inline reference and recommendations', async function () {
+            const fakeReferences = [
+                {
+                    message: '',
+                    licenseName: 'MIT',
+                    repository: 'http://github.com/fake',
+                    recommendationContentSpan: {
+                        start: 0,
+                        end: 10,
+                    },
+                },
+            ]
+            ReferenceInlineProvider.instance.setInlineReference(1, 'test', fakeReferences)
+            session.recommendations = [{ content: "\n\t\tconsole.log('Hello world!');\n\t}" }, { content: '' }]
+            session.language = 'python'
+
+            assert.ok(session.recommendations.length > 0)
+            await RecommendationHandler.instance.clearInlineCompletionStates()
+            assert.strictEqual(ReferenceInlineProvider.instance.refs.length, 0)
+            assert.strictEqual(session.recommendations.length, 0)
+        })
+    })
+
+    describe('truncateOverlapWithRightContext', function () {
+        const fileName = 'test.py'
+        const language = 'python'
+        const rightContext = 'return target\n'
+        const doc = `import math\ndef two_sum(nums, target):\n`
+        const provider = new CWInlineCompletionItemProvider(0, 0, [], '', new vscode.Position(0, 0), '')
+
+        it('removes overlap with right context from suggestion', async function () {
+            const mockSuggestion = 'return target\n'
+            const mockEditor = createMockTextEditor(`${doc}${rightContext}`, fileName, language)
+            const cursorPosition = new vscode.Position(2, 0)
+            const result = provider.truncateOverlapWithRightContext(mockEditor.document, mockSuggestion, cursorPosition)
+            assert.strictEqual(result, '')
+        })
+
+        it('only removes the overlap part from suggestion', async function () {
+            const mockSuggestion = 'print(nums)\nreturn target\n'
+            const mockEditor = createMockTextEditor(`${doc}${rightContext}`, fileName, language)
+            const cursorPosition = new vscode.Position(2, 0)
+            const result = provider.truncateOverlapWithRightContext(mockEditor.document, mockSuggestion, cursorPosition)
+            assert.strictEqual(result, 'print(nums)\n')
+        })
+
+        it('only removes the last overlap pattern from suggestion', async function () {
+            const mockSuggestion = 'return target\nprint(nums)\nreturn target\n'
+            const mockEditor = createMockTextEditor(`${doc}${rightContext}`, fileName, language)
+            const cursorPosition = new vscode.Position(2, 0)
+            const result = provider.truncateOverlapWithRightContext(mockEditor.document, mockSuggestion, cursorPosition)
+            assert.strictEqual(result, 'return target\nprint(nums)\n')
+        })
+
+        it('returns empty string if the remaining suggestion only contains white space', async function () {
+            const mockSuggestion = 'return target\n     '
+            const mockEditor = createMockTextEditor(`${doc}${rightContext}`, fileName, language)
+            const cursorPosition = new vscode.Position(2, 0)
+            const result = provider.truncateOverlapWithRightContext(mockEditor.document, mockSuggestion, cursorPosition)
+            assert.strictEqual(result, '')
+        })
+
+        it('returns the original suggestion if no match found', async function () {
+            const mockSuggestion = 'import numpy\n'
+            const mockEditor = createMockTextEditor(`${doc}${rightContext}`, fileName, language)
+            const cursorPosition = new vscode.Position(2, 0)
+            const result = provider.truncateOverlapWithRightContext(mockEditor.document, mockSuggestion, cursorPosition)
+            assert.strictEqual(result, 'import numpy\n')
+        })
+
+        it('ignores the space at the end of recommendation', async function () {
+            const mockSuggestion = 'return target\n\n\n\n\n'
+            const mockEditor = createMockTextEditor(`${doc}${rightContext}`, fileName, language)
+            const cursorPosition = new vscode.Position(2, 0)
+            const result = provider.truncateOverlapWithRightContext(mockEditor.document, mockSuggestion, cursorPosition)
+            assert.strictEqual(result, '')
+        })
+    })
+})
+
+describe('CWInlineCompletionProvider', function () {
+    beforeEach(async function () {
+        await resetCodeWhispererGlobalVariables()
+    })
+
+    describe('provideInlineCompletionItems', function () {
+        beforeEach(async function () {
+            await resetCodeWhispererGlobalVariables()
+        })
+
+        afterEach(function () {
+            sinon.restore()
+        })
+
+        it('should return undefined if position is before RecommendationHandler start pos', async function () {
+            const position = new vscode.Position(0, 0)
+            const document = createMockDocument()
+            const fakeContext = { triggerKind: 0, selectedCompletionInfo: undefined }
+            const token = new vscode.CancellationTokenSource().token
+            const provider = new CWInlineCompletionItemProvider(0, 0, [], '', new vscode.Position(1, 1), '')
+            const result = await provider.provideInlineCompletionItems(document, position, fakeContext, token)
+
+            assert.ok(result === undefined)
+        })
+    })
+})