From be47f7bfea13fef7303364a6f40791ee68457955 Mon Sep 17 00:00:00 2001
From: Aaron Abramov <dmitrii@abramov.io>
Date: Thu, 27 Jul 2017 10:12:49 -0700
Subject: [PATCH] --findRelatedFiles (#4131)

---
 .../__tests__/find_related_files.test.js      | 42 +++++++++++++++++++
 packages/jest-config/src/index.js             |  1 +
 packages/jest-config/src/normalize.js         |  1 +
 types/Config.js                               |  2 +
 4 files changed, 46 insertions(+)
 create mode 100644 integration_tests/__tests__/find_related_files.test.js

diff --git a/integration_tests/__tests__/find_related_files.test.js b/integration_tests/__tests__/find_related_files.test.js
new file mode 100644
index 000000000000..190bb69c4cf7
--- /dev/null
+++ b/integration_tests/__tests__/find_related_files.test.js
@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @flow
+ */
+
+'use strict';
+
+import runJest from '../runJest';
+import {cleanup, writeFiles} from '../utils';
+import os from 'os';
+import path from 'path';
+
+const skipOnWindows = require('../../scripts/skip_on_windows');
+const DIR = path.resolve(os.tmpdir(), 'force_exit_test');
+
+skipOnWindows.suite();
+
+beforeEach(() => cleanup(DIR));
+afterEach(() => cleanup(DIR));
+
+test('runs tests related to filename', () => {
+  writeFiles(DIR, {
+    '.watchmanconfig': '',
+    '__tests__/test.test.js': `
+      const a = require('../a');
+      test('a', () => {});
+    `,
+    'a.js': 'module.exports = {};',
+    'package.json': JSON.stringify({jest: {testEnvironment: 'node'}}),
+  });
+
+  const {stdout} = runJest(DIR, ['a.js']);
+  expect(stdout).toMatch(/no tests found/i);
+
+  const {stderr} = runJest(DIR, ['--findRelatedTests', 'a.js']);
+  expect(stderr).toMatch('PASS  __tests__/test.test.js');
+});
diff --git a/packages/jest-config/src/index.js b/packages/jest-config/src/index.js
index 406408843011..d8de6a214aff 100644
--- a/packages/jest-config/src/index.js
+++ b/packages/jest-config/src/index.js
@@ -72,6 +72,7 @@ const getConfigs = (
       coverageReporters: options.coverageReporters,
       coverageThreshold: options.coverageThreshold,
       expand: options.expand,
+      findRelatedTests: options.findRelatedTests,
       forceExit: options.forceExit,
       json: options.json,
       lastCommit: options.lastCommit,
diff --git a/packages/jest-config/src/normalize.js b/packages/jest-config/src/normalize.js
index 82315d6fe6dc..a7f8aa68257a 100644
--- a/packages/jest-config/src/normalize.js
+++ b/packages/jest-config/src/normalize.js
@@ -455,6 +455,7 @@ function normalize(options: InitialOptions, argv: Argv) {
       case 'coverageThreshold':
       case 'expand':
       case 'globals':
+      case 'findRelatedTests':
       case 'forceExit':
       case 'listTests':
       case 'logHeapUsage':
diff --git a/types/Config.js b/types/Config.js
index 136e7aa3e3c1..7184b28a29b7 100644
--- a/types/Config.js
+++ b/types/Config.js
@@ -77,6 +77,7 @@ export type InitialOptions = {|
   coverageReporters?: Array<string>,
   coverageThreshold?: {global: {[key: string]: number}},
   expand?: boolean,
+  findRelatedTests?: boolean,
   forceExit?: boolean,
   json: boolean,
   globals?: ConfigGlobals,
@@ -144,6 +145,7 @@ export type GlobalConfig = {|
   coverageReporters: Array<string>,
   coverageThreshold: {global: {[key: string]: number}},
   expand: boolean,
+  findRelatedTests: boolean,
   forceExit: boolean,
   json: boolean,
   lastCommit: boolean,