only run changed tests

Author: mydea

packages/browser-integration-tests/scripts/detectFlakyTests.ts

@@ -6,18 +6,19 @@ import { promisify } from 'util';
 const exec = promisify(childProcess.exec);
 
 async function run(): Promise<void> {
-  const testPaths = getTestPaths();
+  let testPaths = getTestPaths();
 
   try {
-    const changedPaths = process.env.CHANGED_TEST_PATHS ? JSON.parse(process.env.CHANGED_TEST_PATHS) : [];
+    const changedPaths: string[] = process.env.CHANGED_TEST_PATHS ? JSON.parse(process.env.CHANGED_TEST_PATHS) : [];
 
     if (changedPaths.length > 0) {
-      console.log(`Detected changed test paths: ${changedPaths.join(', ')}`);
-      // TODO FN: detect this!
+      console.log(`Detected changed test paths:
+${changedPaths.join('\n')}`);
+
+      testPaths = testPaths.filter(p => changedPaths.some(changedPath => p.includes(changedPath)));
     }
   } catch {
     console.log('Could not detect changed test paths, running all tests.');
-    // ignore, just run all
   }
 
   const cwd = path.join(__dirname, '../');