Fix fialing sanity test (#2384)

Author: DonJayamanne

src/extension/chatSessions/vscode-node/test/copilotCLIChatSessionParticipant.spec.ts

@@ -33,6 +33,7 @@ import { ChatSummarizerProvider } from '../../../prompt/node/summarizer';
 import { createExtensionUnitTestingServices } from '../../../test/node/services';
 import { MockChatResponseStream, TestChatRequest } from '../../../test/node/testHelpers';
 import type { IToolsService } from '../../../tools/common/toolsService';
+import { mockLanguageModelChat } from '../../../tools/node/test/searchToolTestUtils';
 import { CopilotCLIChatSessionContentProvider, CopilotCLIChatSessionItemProvider, CopilotCLIChatSessionParticipant, CopilotCLIWorktreeManager } from '../copilotCLIChatSessionsContribution';
 import { CopilotCloudSessionsProvider } from '../copilotCloudSessionsProvider';
 
@@ -310,6 +311,7 @@ describe('CopilotCLIChatSessionParticipant.handleRequest', () => {
 
 	it('starts a new chat session and submits the request', async () => {
 		const request = new TestChatRequest('Push this');
+		(request as Record<string, any>).model = mockLanguageModelChat;
 		const context = { chatSessionContext: undefined, chatSummary: undefined } as unknown as vscode.ChatContext;
 		const stream = new MockChatResponseStream();
 		const token = disposables.add(new CancellationTokenSource()).token;

src/extension/test/node/testHelpers.ts

@@ -9,7 +9,6 @@ import { MarkdownString } from '../../../util/vs/base/common/htmlContent';
 import { URI } from '../../../util/vs/base/common/uri';
 import { generateUuid } from '../../../util/vs/base/common/uuid';
 import * as vscodeTypes from '../../../vscodeTypes';
-import { mockLanguageModelChat } from '../../tools/node/test/searchToolTestUtils';
 
 export class TestChatRequest implements ChatRequest {
 	public command: string | undefined;
@@ -21,7 +20,7 @@ export class TestChatRequest implements ChatRequest {
 	public isParticipantDetected: boolean;
 	public toolReferences = [];
 	public toolInvocationToken: never = undefined as never;
-	public model = mockLanguageModelChat;
+	public model = null!;
 	public tools = new Map();
 	public id = generateUuid();
 	public sessionId = generateUuid();