From a126260a545e900b469640d945a39e47fb98f61a Mon Sep 17 00:00:00 2001
From: Tim Seckinger <seckinger.tim@gmail.com>
Date: Sat, 26 Jan 2019 00:48:23 +0100
Subject: [PATCH] e2e test running Jest programmatically

---
 e2e/__tests__/runProgramatically.test.js | 19 +++++++++++++++++++
 e2e/run-programatically/index.js         | 13 +++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 e2e/__tests__/runProgramatically.test.js
 create mode 100644 e2e/run-programatically/index.js

diff --git a/e2e/__tests__/runProgramatically.test.js b/e2e/__tests__/runProgramatically.test.js
new file mode 100644
index 000000000000..a9935672f962
--- /dev/null
+++ b/e2e/__tests__/runProgramatically.test.js
@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ */
+
+import {resolve} from 'path';
+
+import {run} from '../Utils';
+
+const dir = resolve(__dirname, '..', 'run-programatically');
+
+test('run Jest programatically', () => {
+  const {stdout} = run(`node index.js --version`, dir);
+  expect(stdout).toMatch(/\d{2}\.\d{1,2}\.\d{1,2}[\-\S]*-dev$/);
+});
diff --git a/e2e/run-programatically/index.js b/e2e/run-programatically/index.js
new file mode 100644
index 000000000000..a397521b7c74
--- /dev/null
+++ b/e2e/run-programatically/index.js
@@ -0,0 +1,13 @@
+#!/usr/bin/env node
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ */
+
+// Running Jest like this is not officially supported,
+// but it is common practice until there is a proper API as a substitute.
+require('jest').run(process.argv);