craft a test

Author: peter-leonov

packages/jest-runtime/src/__mocks__/resourceQueryResolver.js

@@ -0,0 +1,15 @@
+/**
+ * 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';
+
+module.exports = function userResolver(path, options) {
+  const defaultResolver = require('../__tests__/defaultResolver.js');
+  const [clearPath, query] = path.split('?');
+  return defaultResolver(clearPath, options) + (query ? '?' + query : '');
+};

packages/jest-runtime/src/__tests__/runtime_require_module.test.js

@@ -248,6 +248,47 @@ describe('Runtime requireModule', () => {
       expect(hastePackage.isHastePackage).toBe(true);
     }));
 
+  it('supports resolving the same path to multiple modules', () =>
+    createRuntime(__filename, {
+      // using the default resolver as a custom resolver
+      resolver: require.resolve('../__mocks__/resourceQueryResolver.js'),
+    }).then(runtime => {
+      const moduleNoQuery1 = runtime.requireModule(
+        runtime.__mockRootPath,
+        './moduleWithResourceQuery.js',
+      );
+      const moduleNoQuery2 = runtime.requireModule(
+        runtime.__mockRootPath,
+        './moduleWithResourceQuery.js',
+      );
+      expect(moduleNoQuery1.name).toBe('moduleWithoutResourceQuery');
+      expect(moduleNoQuery1).toBe(moduleNoQuery2);
+
+      const moduleWithQueryA = runtime.requireModule(
+        runtime.__mockRootPath,
+        './moduleWithResourceQuery.js?a',
+      );
+      const moduleWithQueryB = runtime.requireModule(
+        runtime.__mockRootPath,
+        './moduleWithResourceQuery.js?b',
+      );
+      expect(moduleWithQueryA.name).toBe('moduleWithoutResourceQuery');
+      expect(moduleWithQueryB.name).toBe('moduleWithoutResourceQuery');
+      expect(moduleWithQueryA).not.toBe(moduleWithQueryB);
+
+      const moduleWithSameQuery1 = runtime.requireModule(
+        runtime.__mockRootPath,
+        './moduleWithResourceQuery.js?sameQuery',
+      );
+      const moduleWithSameQuery2 = runtime.requireModule(
+        runtime.__mockRootPath,
+        './moduleWithResourceQuery.js?sameQuery',
+      );
+      expect(moduleWithSameQuery1.name).toBe('moduleWithoutResourceQuery');
+      expect(moduleWithSameQuery2.name).toBe('moduleWithoutResourceQuery');
+      expect(moduleWithSameQuery1).toBe(moduleWithSameQuery2);
+    }));
+
   it('resolves node modules properly when crawling node_modules', () =>
     // While we are crawling a node module, we shouldn't put package.json
     // files of node modules to resolve to `package.json` but rather resolve

packages/jest-runtime/src/__tests__/test_root/moduleWithResourceQuery.js

@@ -0,0 +1,12 @@
+/**
+ * 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.
+ *
+ */
+
+// this object reference should be uniq per each module compilation
+const newObject = {name: 'moduleWithoutResourceQuery'};
+
+module.exports = newObject;