Add util to create empty test result

Author: Mark1626

e2e/transform/transform-testrunner/test-runner.ts

@@ -4,10 +4,11 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
-import {Config} from '@jest/types';
 import {JestEnvironment} from '@jest/environment';
-import Runtime from 'jest-runtime';
 import {TestResult} from '@jest/test-result';
+import {Config} from '@jest/types';
+import Runtime from 'jest-runtime';
+import {emptyTestResult} from 'jest-util';
 
 export default async function testRunner(
   globalConfig: Config.GlobalConfig,
@@ -17,28 +18,7 @@ export default async function testRunner(
   testPath: string
 ): Promise<TestResult> {
   return {
-    numFailingTests: 0,
-    numPassingTests: 1,
-    numPendingTests: 0,
-    numTodoTests: 0,
-    snapshot: {
-      added: 0,
-      fileDeleted: false,
-      matched: 0,
-      unchecked: 0,
-      unmatched: 0,
-      updated: 0,
-    },
+    ...emptyTestResult(),
     testFilePath: testPath,
-    testResults: [
-      {
-        ancestorTitles: [],
-        duration: 2,
-        failureMessages: [],
-        fullName: 'sample test',
-        status: 'passed',
-        title: 'sample test',
-      },
-    ],
-  } as TestResult;
+  };
 }

packages/jest-circus/src/legacy-code-todo-rewrite/jestAdapterInit.ts

@@ -16,6 +16,7 @@ import {
   addSerializer,
   buildSnapshotResolver,
 } from 'jest-snapshot';
+import {emptyTestResult} from 'jest-util';
 import throat from 'throat';
 import {
   ROOT_DESCRIBE_BLOCK_NAME,
@@ -215,30 +216,14 @@ export const runAndTransformResultsToJestFormat = async ({
 
   dispatch({name: 'teardown'});
   return {
+    ...emptyTestResult(),
     console: undefined,
     displayName: config.displayName,
     failureMessage,
-    leaks: false, // That's legacy code, just adding it so Flow is happy.
     numFailingTests,
     numPassingTests,
     numPendingTests,
     numTodoTests,
-    openHandles: [],
-    perfStats: {
-      // populated outside
-      end: 0,
-      start: 0,
-    },
-    skipped: false,
-    snapshot: {
-      added: 0,
-      fileDeleted: false,
-      matched: 0,
-      unchecked: 0,
-      uncheckedKeys: [],
-      unmatched: 0,
-      updated: 0,
-    },
     sourceMaps: {},
     testExecError,
     testFilePath: testPath,

packages/jest-jasmine2/src/reporter.ts

@@ -8,6 +8,7 @@
 import {Config} from '@jest/types';
 import {AssertionResult, TestResult} from '@jest/test-result';
 import {formatResultsErrors} from 'jest-message-util';
+import {emptyTestResult} from 'jest-util';
 import {SpecResult} from './jasmine/Spec';
 import {SuiteResult} from './jasmine/Suite';
 import {Reporter, RunDetails} from './types';
@@ -78,6 +79,7 @@ export default class Jasmine2Reporter implements Reporter {
     });
 
     const testResult = {
+      ...emptyTestResult(),
       console: null,
       failureMessage: formatResultsErrors(
         testResults,
@@ -89,10 +91,6 @@ export default class Jasmine2Reporter implements Reporter {
       numPassingTests,
       numPendingTests,
       numTodoTests,
-      perfStats: {
-        end: 0,
-        start: 0,
-      },
       snapshot: {
         added: 0,
         fileDeleted: false,

packages/jest-util/src/emptyTestResult.ts

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. 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.
+ */
+
+import {TestResult} from '@jest/test-result';
+
+export default function emptyTestResult(): TestResult {
+  return {
+    leaks: false, // That's legacy code, just adding it so Flow is happy.
+    numFailingTests: 0,
+    numPassingTests: 0,
+    numPendingTests: 0,
+    numTodoTests: 0,
+    openHandles: [],
+    perfStats: {
+      end: 0,
+      start: 0,
+    },
+    skipped: false,
+    snapshot: {
+      added: 0,
+      fileDeleted: false,
+      matched: 0,
+      unchecked: 0,
+      uncheckedKeys: [],
+      unmatched: 0,
+      updated: 0,
+    },
+    testFilePath: '',
+    testResults: [],
+  };
+}

packages/jest-util/src/index.ts

@@ -31,6 +31,7 @@ import replacePathSepForGlob from './replacePathSepForGlob';
 import testPathPatternToRegExp from './testPathPatternToRegExp';
 import * as preRunMessage from './preRunMessage';
 import pluralize from './pluralize';
+import emptyTestResult from './emptyTestResult';
 
 export = {
   BufferedConsole,
@@ -42,6 +43,7 @@ export = {
   convertDescriptorToString,
   createDirectory,
   deepCyclicCopy,
+  emptyTestResult,
   formatTestResults,
   getCallsite,
   getConsoleOutput,