fix(jest-runner): Support Jest v27 (#2861)

Support new defaults for Jest 27 yet still supporting Jest <27 with those defaults.

e2e/package.json

@@ -19,7 +19,7 @@
     "grunt": "~1.0.4",
     "jasmine": "~3.6.2",
     "jasmine-core": "~3.6.0",
-    "jest": "~26.6.1",
+    "jest": "~27.0.1",
     "jest-environment-jsdom-sixteen": "^1.0.3",
     "karma": "~6.0.1",
     "karma-chai": "~0.1.0",
@@ -34,7 +34,7 @@
     "mutation-testing-metrics": "1.7.2",
     "rxjs": "~6.5.3",
     "semver": "~6.3.0",
-    "ts-jest": "~26.3.0",
+    "ts-jest": "~27.0.1",
     "ts-loader": "~8.0.3",
     "ts-node": "~7.0.0",
     "typescript": "~3.9.2",

e2e/tasks/run-e2e-tests.ts

@@ -5,50 +5,57 @@ import semver from 'semver';
 import os from 'os';
 import { from, defer } from 'rxjs';
 import { tap, mergeAll, map } from 'rxjs/operators';
+import minimatch from 'minimatch';
 
 const testRootDir = path.resolve(__dirname, '..', 'test');
 
 function runE2eTests() {
-  const testDirs = fs.readdirSync(testRootDir).filter(dir => fs.statSync(path.join(testRootDir, dir)).isDirectory());
+  const pattern = process.argv[2] ?? '*';
+  const testDirs = fs
+    .readdirSync(testRootDir, { withFileTypes: true })
+    .filter((dir) => dir.isDirectory())
+    .map((dir) => dir.name)
+    .filter(minimatch.filter(pattern));
 
+  console.log(`Running e2e test in ${testDirs.length ? testDirs.join(', ') : '<none>'}`);
+  console.log(`(matched with ${pattern})`);
   // Create test$, an observable of test runs
-  const test$ = from(testDirs).pipe(map(testDir => defer(() => runTest(testDir))));
+  const test$ = from(testDirs).pipe(map((testDir) => defer(() => runTest(testDir))));
 
   let testsRan = 0;
   return test$.pipe(
     mergeAll(os.cpus().length && 2), // use mergeAll to limit concurrent test runs
-    tap(testDir => console.log(`\u2714 ${testDir} tested (${++testsRan}/${testDirs.length})`)),
+    tap((testDir) => console.log(`\u2714 ${testDir} tested (${++testsRan}/${testDirs.length})`))
   );
 }
 
-runE2eTests()
-  .subscribe({
-    complete: () => console.log('✅ Done'),
-    error: err => {
-      console.error(err);
-      process.exit(1);
-    },
-  });
+runE2eTests().subscribe({
+  complete: () => console.log('✅ Done'),
+  error: (err) => {
+    console.error(err);
+    process.exit(1);
+  },
+});
 
 function execNpm(command: string, testDir: string, stream: boolean) {
   const currentTestDir = path.resolve(testRootDir, testDir);
   console.log(`Exec ${testDir} npm ${command}`);
   const testProcess = execa('npm', [command], { timeout: 500000, cwd: currentTestDir, stdio: 'pipe' });
   let stderr = '';
   let stdout = '';
-  testProcess.stderr!.on('data', chunk => {
+  testProcess.stderr!.on('data', (chunk) => {
     stderr += chunk.toString();
     if (stream) {
       console.error(chunk.toString());
     }
   });
-  testProcess.stdout!.on('data', chunk => {
-    stdout += chunk.toString()
+  testProcess.stdout!.on('data', (chunk) => {
+    stdout += chunk.toString();
     if (stream) {
       console.log(chunk.toString());
     }
   });
-  return testProcess.catch(error => {
+  return testProcess.catch((error) => {
     console.log(`X ${testDir}`);
     console.log(stdout);
     console.error(stderr);

e2e/test/jest-custom-env/src/calculator-element.test.js

@@ -1,5 +1,5 @@
 /**
- * @jest-environment @stryker-mutator/jest-runner/jest-env/jsdom-sixteen
+ * @jest-environment @stryker-mutator/jest-runner/jest-env/jsdom
  */
 import './calculator-element';