Add browser tool smoke tests

[kycutler]

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[github-actions]

Screenshot Changes

Base: 96843429 Current: ea2345fc

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[Copilot]

Pull request overview

Adds a new VS Code API integration test suite to smoke-test the integrated browser “chat tools” (open page, type, click, read, run Playwright), and updates the test workspace HTML to provide simple DOM elements for interaction.

Changes:

• Add browser.tools.test.ts integration tests that enable browser chat tools + global auto-approve and invoke vscode.lm browser tools.
• Extend testWorkspace/index.html with an input + button + output area to support tool-driven typing/clicking verification.

Show a summary per file

File	Description
extensions/vscode-api-tests/testWorkspace/index.html	Adds minimal UI elements and click handler for browser-tool interaction tests.
extensions/vscode-api-tests/src/singlefolder-tests/browser.tools.test.ts	New integration suite exercising browser LM tools (open/type/click/read/run Playwright) with auto-approve enabled.

Copilot's findings

Comments suppressed due to low confidence (2)

extensions/vscode-api-tests/src/singlefolder-tests/browser.tools.test.ts:99

• This test depends on reaching https://google.com/, which can be blocked in CI (no outbound internet), by enterprise policy, or by the agent network filter (when enabled, an empty allowlist blocks all domains). To keep the suite deterministic, prefer a local/file URL (already covered by the next test) or use a stable domain like example.com with explicit allowlisting when network filtering is active (and/or make the assertion tolerant of navigation failures).

	test('Open a page from the web', async function () {
		this.timeout(60000);

		const output = await invokeTool('open_browser_page', { url: 'https://google.com/' });

		assert.match(output, /Page ID:/, `Expected output to contain "Page ID:", got: ${output}`);
	});

extensions/vscode-api-tests/src/singlefolder-tests/browser.tools.test.ts:109

• fileUrl is built from workspaceFolders[0].uri.fsPath. In remote integration runs, the workspace folder URI is typically remote (e.g. vscode-remote:) and the file path will not exist on the local UI machine where the integrated browser/Playwright runs, causing the browser page open to fail. Consider skipping this test when vscode.env.remoteName is set, or avoid local file paths by using a data URL / about:blank + run_playwright_code to page.setContent(...) to create the test DOM.

		// Build a file:// URL to the test workspace's index.html
		const workspaceFolders = vscode.workspace.workspaceFolders;
		assert.ok(workspaceFolders && workspaceFolders.length > 0, 'Expected a workspace folder');
		const indexHtmlPath = path.join(workspaceFolders[0].uri.fsPath, 'index.html');
		const fileUrl = vscode.Uri.file(indexHtmlPath).toString();

• Files reviewed: 2/2 changed files
• Comments generated: 1