diff --git a/integration-tests/__tests__/multi_project_runner.test.js b/integration-tests/__tests__/multi_project_runner.test.js
index ecd1123667c7..7d5c7440f8a4 100644
--- a/integration-tests/__tests__/multi_project_runner.test.js
+++ b/integration-tests/__tests__/multi_project_runner.test.js
@@ -20,12 +20,7 @@ const DIR = path.resolve(os.tmpdir(), 'multi_project_runner_test');
 
 SkipOnWindows.suite();
 
-const fileContentWithProvidesModule = name => `/*
- * @providesModule ${name}
- */
-
-module.exports = {};
-`;
+const SAMPLE_FILE_CONTENT = 'module.exports = {};';
 
 beforeEach(() => cleanup(DIR));
 afterEach(() => cleanup(DIR));
@@ -58,29 +53,51 @@ test('--listTests doesnt duplicate the test files', () => {
 test('can pass projects or global config', () => {
   writeFiles(DIR, {
     '.watchmanconfig': '',
+    'base_config.js': `
+      module.exports = {
+        haste: {
+          hasteImplModulePath: '<rootDir>/hasteImpl.js',
+        },
+      };
+    `,
+    'hasteImpl.js': `
+      module.exports = {
+        getHasteName(path) {
+          return path
+            .substr(path.lastIndexOf('/') + 1)
+            .replace(/\.js$/, '');
+        },
+      };
+    `,
     'package.json': '{}',
     'project1/__tests__/file1.test.js': `
       const file1 = require('file1');
       test('file1', () => {});
     `,
-    'project1/file1.js': fileContentWithProvidesModule('file1'),
-    'project1/jest.config.js': `module.exports = {rootDir: './', displayName: 'BACKEND'}`,
+    'project1/file1.js': SAMPLE_FILE_CONTENT,
+    'project1/jest.config.js': `module.exports = {rootDir: './', displayName: 'BACKEND',         haste: {
+              hasteImplModulePath: '<rootDir>/../hasteImpl.js',
+            },}`,
     'project2/__tests__/file1.test.js': `
       const file1 = require('file1');
       test('file1', () => {});
     `,
-    'project2/file1.js': fileContentWithProvidesModule('file1'),
-    'project2/jest.config.js': `module.exports = {rootDir: './'}`,
+    'project2/file1.js': SAMPLE_FILE_CONTENT,
+    'project2/jest.config.js': `module.exports = {rootDir: './',         haste: {
+              hasteImplModulePath: '<rootDir>/../hasteImpl.js',
+            },}`,
     'project3/__tests__/file1.test.js': `
       const file1 = require('file1');
       test('file1', () => {});
     `,
-    'project3/file1.js': fileContentWithProvidesModule('file1'),
-    'project3/jest.config.js': `module.exports = {rootDir: './', displayName: 'UI'}`,
+    'project3/file1.js': SAMPLE_FILE_CONTENT,
+    'project3/jest.config.js': `module.exports = {rootDir: './', displayName: 'UI',         haste: {
+              hasteImplModulePath: '<rootDir>/../hasteImpl.js',
+            },}`,
   });
   let stderr;
 
-  ({stderr} = runJest(DIR, ['--no-watchman']));
+  ({stderr} = runJest(DIR, ['--no-watchman', '--config', 'base_config.js']));
   expect(stderr).toMatch(
     'The name `file1` was looked up in the Haste module map. It cannot be resolved, because there exists several different files',
   );
@@ -91,6 +108,9 @@ test('can pass projects or global config', () => {
     'global_config.js': `
       module.exports = {
         projects: ['project1/', 'project2/', 'project3/'],
+        haste: {
+          hasteImplModulePath: '<rootDir>/hasteImpl.js',
+        },
       };
     `,
   });
@@ -102,6 +122,8 @@ test('can pass projects or global config', () => {
     'project1',
     'project2',
     'project3',
+    '--config',
+    'base_config.js',
   ]));
 
   const result1 = extractSummary(stderr);
@@ -129,16 +151,16 @@ test('"No tests found" message for projects', () => {
     '.watchmanconfig': '',
     'package.json': '{}',
     'project1/__tests__/file1.test.js': `
-      const file1 = require('file1');
+      const file1 = require('../file1');
       test('file1', () => {});
     `,
-    'project1/file1.js': fileContentWithProvidesModule('file1'),
+    'project1/file1.js': SAMPLE_FILE_CONTENT,
     'project1/jest.config.js': `module.exports = {rootDir: './'}`,
     'project2/__tests__/file1.test.js': `
-      const file1 = require('file1');
+      const file1 = require('../file1');
       test('file1', () => {});
     `,
-    'project2/file1.js': fileContentWithProvidesModule('file1'),
+    'project2/file1.js': SAMPLE_FILE_CONTENT,
     'project2/jest.config.js': `module.exports = {rootDir: './'}`,
   });
   const {stdout: verboseOutput} = runJest(DIR, [
@@ -173,16 +195,16 @@ test('projects can be workspaces with non-JS/JSON files', () => {
     'packages/README.md': '# Packages README',
     'packages/project1/README.md': '# Project1 README',
     'packages/project1/__tests__/file1.test.js': `
-    const file1 = require('file1');
+    const file1 = require('../file1');
     test('file1', () => {});
     `,
-    'packages/project1/file1.js': fileContentWithProvidesModule('file1'),
+    'packages/project1/file1.js': SAMPLE_FILE_CONTENT,
     'packages/project1/package.json': '{}',
     'packages/project2/__tests__/file2.test.js': `
-    const file2 = require('file2');
+    const file2 = require('../file2');
     test('file2', () => {});
     `,
-    'packages/project2/file2.js': fileContentWithProvidesModule('file2'),
+    'packages/project2/file2.js': SAMPLE_FILE_CONTENT,
     'packages/project2/package.json': '{}',
   });
 
diff --git a/packages/jest-cli/src/__tests__/search_source.test.js b/packages/jest-cli/src/__tests__/search_source.test.js
index cbb79b89cc79..291891fd8e36 100644
--- a/packages/jest-cli/src/__tests__/search_source.test.js
+++ b/packages/jest-cli/src/__tests__/search_source.test.js
@@ -14,6 +14,16 @@ jest.setTimeout(15000);
 
 const SkipOnWindows = require('../../../../scripts/SkipOnWindows');
 
+const hasteImplModulePath = path.join(
+  __dirname,
+  '..',
+  '..',
+  '..',
+  'jest-haste-map',
+  'src',
+  '__tests__',
+  'haste_impl',
+);
 const rootDir = path.resolve(__dirname, 'test_root');
 const testRegex = path.sep + '__testtests__' + path.sep;
 const testMatch = ['**/__testtests__/**/*'];
@@ -377,6 +387,9 @@ describe('SearchSource', () => {
         {
           name: 'SearchSource-findRelatedTests-tests',
           rootDir,
+          haste: {
+            hasteImplModulePath,
+          },
         },
         {},
       );
diff --git a/packages/jest-haste-map/src/__tests__/haste_impl.js b/packages/jest-haste-map/src/__tests__/haste_impl.js
index 1405d95025b8..0dc26ac5fac6 100644
--- a/packages/jest-haste-map/src/__tests__/haste_impl.js
+++ b/packages/jest-haste-map/src/__tests__/haste_impl.js
@@ -8,12 +8,17 @@
 
 module.exports = {
   getHasteName(path) {
-    if (path.includes('__mocks__') || path.includes('NoHaste')) {
+    if (
+      path.includes('__mocks__') ||
+      path.includes('NoHaste') ||
+      path.includes('/module_dir/') ||
+      path.includes('/sourcemaps/')
+    ) {
       return undefined;
     }
 
     return path
       .substr(path.lastIndexOf('/') + 1)
-      .replace(/(\.(android|ios))?\.js$/, '');
+      .replace(/(\.(android|ios|native))?\.js$/, '');
   },
 };
diff --git a/packages/jest-runtime/src/__mocks__/createRuntime.js b/packages/jest-runtime/src/__mocks__/createRuntime.js
index 8c56f2b38010..f573d578f697 100644
--- a/packages/jest-runtime/src/__mocks__/createRuntime.js
+++ b/packages/jest-runtime/src/__mocks__/createRuntime.js
@@ -18,6 +18,18 @@ module.exports = function createRuntime(filename, config) {
       {
         name: 'Runtime-' + filename.replace(/\W/, '-') + '.tests',
         rootDir: path.resolve(path.dirname(filename), 'test_root'),
+        haste: {
+          hasteImplModulePath: path.resolve(
+            __dirname,
+            '..',
+            '..',
+            '..',
+            'jest-haste-map',
+            'src',
+            '__tests__',
+            'haste_impl.js',
+          ),
+        },
       },
       config,
     ),
diff --git a/packages/jest-runtime/src/__tests__/test_root/platform/platform.android.js b/packages/jest-runtime/src/__tests__/test_root/platform/Platform.android.js
similarity index 100%
rename from packages/jest-runtime/src/__tests__/test_root/platform/platform.android.js
rename to packages/jest-runtime/src/__tests__/test_root/platform/Platform.android.js
diff --git a/packages/jest-runtime/src/__tests__/test_root/platform/platform.ios.js b/packages/jest-runtime/src/__tests__/test_root/platform/Platform.ios.js
similarity index 100%
rename from packages/jest-runtime/src/__tests__/test_root/platform/platform.ios.js
rename to packages/jest-runtime/src/__tests__/test_root/platform/Platform.ios.js
diff --git a/packages/jest-runtime/src/__tests__/test_root/platform/platform.js b/packages/jest-runtime/src/__tests__/test_root/platform/Platform.js
similarity index 100%
rename from packages/jest-runtime/src/__tests__/test_root/platform/platform.js
rename to packages/jest-runtime/src/__tests__/test_root/platform/Platform.js
diff --git a/packages/jest-runtime/src/__tests__/test_root/platform/platform.native.js b/packages/jest-runtime/src/__tests__/test_root/platform/Platform.native.js
similarity index 100%
rename from packages/jest-runtime/src/__tests__/test_root/platform/platform.native.js
rename to packages/jest-runtime/src/__tests__/test_root/platform/Platform.native.js