Add integration test for js and json presets

.gitignore

@@ -5,6 +5,8 @@
 /examples/*/node_modules/
 
 /integration-tests/*/node_modules
+!/integration-tests/presets/json/node_modules
+!/integration-tests/presets/js/node_modules
 /integration-tests/transform/*/coverage
 /integration-tests/transform/*/node_modules
 

integration-tests/__tests__/presets.test.js

@@ -0,0 +1,21 @@
+/**
+ * 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.
+ *
+ * @flow
+ */
+'use strict';
+
+const runJest = require('../runJest');
+
+test('supports json preset', () => {
+  const result = runJest('presets/json');
+  expect(result.status).toBe(0);
+});
+
+test('supports js preset', () => {
+  const result = runJest('presets/js');
+  expect(result.status).toBe(0);
+});

integration-tests/presets/js/__tests__/index.js

@@ -0,0 +1,11 @@
+/**
+ * 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.
+ */
+'use strict';
+
+test('load file mapped by js preset', () => {
+  expect(require('./test.foo')).toEqual(42);
+});

integration-tests/presets/js/package.json

@@ -0,0 +1,5 @@
+{
+  "jest": {
+    "preset": "jest-preset-js"
+  }
+}

integration-tests/presets/json/__tests__/index.js

@@ -0,0 +1,11 @@
+/**
+ * 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.
+ */
+'use strict';
+
+test('load file mapped by json preset', () => {
+  expect(require('./test.foo')).toEqual(42);
+});

integration-tests/presets/json/package.json

@@ -0,0 +1,5 @@
+{
+  "jest": {
+    "preset": "jest-preset-json"
+  }
+}