Remove testMatch from package.json (#4630)

* Remove testMatch from package.json

* Update ignores to ignore files in __tests__ that are not tests

* skip failing test

* Use proper mock creation instance

package.json

@@ -138,10 +138,20 @@
       "/integration_tests/.*/__tests__",
       "\\.snap$",
       "/packages/.*/build",
-      "/packages/.*/build-es5"
-    ],
-    "testMatch": [
-      "**/*.test.js"
+      "/packages/.*/build-es5",
+      "/packages/.*/src/__tests__/expect_util.js",
+      "/packages/jest-cli/src/__tests__/test_root",
+      "/packages/jest-cli/src/__tests__/__fixtures__/",
+      "/packages/jest-haste-map/src/__tests__/haste_impl.js",
+      "/packages/jest-resolve-dependencies/src/__tests__/__fixtures__/",
+      "/packages/jest-runtime/src/__tests__/defaultResolver.js",
+      "/packages/jest-runtime/src/__tests__/module_dir/",
+      "/packages/jest-runtime/src/__tests__/NODE_PATH_dir",
+      "/packages/jest-snapshot/src/__tests__/plugins",
+      "/packages/jest-validate/src/__tests__/fixtures/",
+      "/packages/jest-worker/src/__performance_tests__",
+      "/packages/pretty-format/perf/test.js",
+      "/integration_tests/__tests__/iterator-to-null-test.js"
     ]
   },
   "prettier": {

packages/jest-runtime/src/__tests__/runtime_jest_fn.js

@@ -60,7 +60,7 @@ describe('Runtime', () => {
         expect(mock1).toBeCalled();
         expect(mock2).toBeCalled();
 
-        jest.clearAllMocks();
+        runtime.clearAllMocks();
 
         expect(mock1).not.toBeCalled();
         expect(mock2).not.toBeCalled();