test: add e2e tests for adding mts and cts to default moduleFileExtensions config

Author: yinm

e2e/__tests__/testMatchTs.test.ts

@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import {extractSummary} from '../Utils';
+import runJest from '../runJest';
+
+it('testMatch should able to match file with cts and mts extension', () => {
+  const result = runJest('test-match-ts');
+  expect(result.exitCode).toBe(0);
+  const {summary} = extractSummary(result.stderr);
+  expect(summary).toMatchSnapshot();
+});

e2e/test-match-ts/__tests__/sample-suite.mts

@@ -0,0 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+test('mts extension', () => {
+  expect(1).toBe(1);
+});

e2e/test-match-ts/__tests__/sample-suite2.cts

@@ -0,0 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+test('cts extension', () => {
+  expect(1).toBe(1);
+});

e2e/test-match-ts/package.json

@@ -0,0 +1,7 @@
+{
+  "jest": {
+    "testMatch": [
+      "**/__tests__/*.?ts"
+    ]
+  }
+}