Update package.json to remove a Jest warning.

package.json

@@ -46,7 +46,8 @@
   "jest": {
     "modulePathIgnorePatterns": [
       "examples/.*",
-      "packages/.*/build"
+      "packages/.*/build",
+      "packages/jest-runtime/src/__tests__/test_root_with_dup_mocks"
     ],
     "collectCoverageFrom": [
       "**/packages/{jest-runtime,jest-matchers,jest-haste-map,jest-file-exists,jest-diff,jest-changed-files}/**/*.js",
@@ -67,9 +68,9 @@
     "testPathIgnorePatterns": [
       "/node_modules/",
       "/examples/",
-      "integration_tests/.*/__tests__",
+      "/integration_tests/.*/__tests__",
       "\\.snap$",
-      "packages/.*/build"
+      "/packages/.*/build"
     ],
     "testRegex": ".*-test\\.js"
   }

packages/jest-runtime/src/__tests__/Runtime-requireMock-test.js

@@ -12,13 +12,18 @@
 const path = require('path');
 
 let createRuntime;
+const consoleWarn = console.warn;
 
 describe('Runtime', () => {
 
   beforeEach(() => {
     createRuntime = require('createRuntime');
   });
 
+  afterEach(() => {
+    console.warn = consoleWarn;
+  });
+
   describe('requireMock', () => {
     it('uses manual mocks before attempting to automock', () =>
       createRuntime(__filename).then(runtime => {
@@ -151,11 +156,13 @@ describe('Runtime', () => {
       }),
     );
 
-    it('uses the closest manual mock when duplicates exist', () =>
-      createRuntime(__filename, {
+    it('uses the closest manual mock when duplicates exist', () => {
+      console.warn = jest.fn();
+      return createRuntime(__filename, {
         rootDir:
           path.resolve(path.dirname(__filename), 'test_root_with_dup_mocks'),
       }).then(runtime => {
+        expect(console.warn).toBeCalled();
         const exports1 = runtime.requireMock(
           runtime.__mockRootPath,
           './subdir1/MyModule',
@@ -171,7 +178,7 @@ describe('Runtime', () => {
         expect(exports2.modulePath).toEqual(
           'subdir2/__mocks__/MyModule.js',
         );
-      }),
-    );
+      });
+    });
   });
 });