test: add an E2E test for post-install analytics prompt

Author: clydin

tests/legacy-cli/e2e/tests/misc/ask-analytics.ts

@@ -0,0 +1,34 @@
+import { createDir, rimraf } from '../../utils/fs';
+import {
+  execWithEnv,
+  killAllProcesses,
+  waitForAnyProcessOutputToMatch,
+} from '../../utils/process';
+
+const packages = require('../../../../../lib/packages').packages;
+
+export default async function() {
+  // Create a temporary directory to install the CLI
+  await createDir('../ask-analytics');
+  const cwd = process.cwd();
+  process.chdir('../ask-analytics');
+
+  try {
+    // Install the CLI with TTY force enabled
+    const execution = execWithEnv(
+      'npm',
+      ['install', packages['@angular/cli'].tar],
+      { ...process.env, 'NG_FORCE_TTY': '1' },
+    );
+
+    // Check if the prompt is shown
+    await waitForAnyProcessOutputToMatch(/Would you like to share anonymous usage data/);
+
+  } finally {
+    killAllProcesses();
+
+    // Cleanup
+    process.chdir(cwd);
+    await rimraf('../ask-analytics');
+  }
+}