Add mock variable name test

e2e/babel-plugin-jest-hoist/__test_modules__/f.js

@@ -0,0 +1,8 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc. 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.
+ */
+
+export default () => 'unmocked';

e2e/babel-plugin-jest-hoist/__tests__/integration.test.js

@@ -61,6 +61,10 @@ jest.dontMock('../__test_modules__/Mocked');
 const myObject = {mock: () => {}};
 myObject.mock('apple', 27);
 
+// Variable names prefixed with `mock` (ignore case) should not throw as out-of-scope
+const MockMethods = () => {};
+jest.mock('../__test_modules__/f', () => MockMethods);
+
 describe('babel-plugin-jest-hoist', () => {
   it('does not throw during transform', () => {
     const object = {};

packages/babel-plugin-jest-hoist/src/index.js

@@ -113,7 +113,7 @@ FUNCTIONS.mock = args => {
             /^mock/i.test(name) ||
             // Allow istanbul's coverage variable to pass.
             /^(?:__)?cov/.test(name),
-            'The module factory of `jest.mock()` is not allowed to ' +
+          'The module factory of `jest.mock()` is not allowed to ' +
             'reference any out-of-scope variables.\n' +
             'Invalid variable access: ' +
             name +