add long test time threshold option

TestUtils.ts

@@ -33,6 +33,7 @@ const DEFAULT_GLOBAL_CONFIG: Config.GlobalConfig = {
   lastCommit: false,
   listTests: false,
   logHeapUsage: false,
+  longTestThreshold: 5,
   maxConcurrency: 5,
   maxWorkers: 2,
   noSCM: null,

docs/CLI.md

@@ -218,6 +218,10 @@ Lists all tests as JSON that Jest will run given the arguments, and exits. This
 
 Logs the heap usage after every test. Useful to debug memory leaks. Use together with `--runInBand` and `--expose-gc` in node.
 
+### `--longTestThreshold=<num>`
+
+A number of seconds after which a test is considered as long running and reported as such in the results.
+
 ### `--maxConcurrency=<num>`
 
 Prevents Jest from executing more than the specified amount of tests at the same time. Only affects tests that use `test.concurrent`.

docs/Configuration.md

@@ -438,6 +438,12 @@ _Note: A global teardown module configured in a project (using multi-project run
 
 _Note: The same caveat concerning transformation of `node_modules` as for `globalSetup` applies to `globalTeardown`._
 
+### `longTestThreshold` [number]
+
+Default: `5`
+
+A number of seconds after which a test is considered as long running and reported as such in the results.
+
 ### `maxConcurrency` [number]
 
 Default: `5`

e2e/__tests__/__snapshots__/showConfig.test.ts.snap

@@ -101,6 +101,7 @@ exports[`--showConfig outputs config info and exits 1`] = `
     "lastCommit": false,
     "listTests": false,
     "logHeapUsage": false,
+    "longTestThreshold": 5,
     "maxConcurrency": 5,
     "maxWorkers": "[maxWorkers]",
     "noStackTrace": false,

packages/jest-cli/src/cli/args.ts

@@ -336,6 +336,13 @@ export const options = {
       'node.',
     type: 'boolean',
   },
+  longTestThreshold: {
+    default: undefined,
+    description:
+      'A number of seconds after which a test is considered as long running ' +
+      'and reported as such in the results.',
+    type: 'number',
+  },
   mapCoverage: {
     default: undefined,
     description:

packages/jest-config/src/Defaults.ts

@@ -33,6 +33,7 @@ const defaultOptions: Config.DefaultOptions = {
     providesModuleNodeModules: [],
     throwOnModuleCollision: false,
   },
+  longTestThreshold: 5,
   maxConcurrency: 5,
   maxWorkers: '50%',
   moduleDirectories: ['node_modules'],

packages/jest-config/src/ValidConfig.ts

@@ -63,6 +63,7 @@ const initialOptions: Config.InitialOptions = {
   json: false,
   lastCommit: false,
   logHeapUsage: true,
+  longTestThreshold: 5,
   maxConcurrency: 5,
   maxWorkers: '50%',
   moduleDirectories: ['node_modules'],

packages/jest-config/src/index.ts

@@ -128,6 +128,7 @@ const groupOptions = (
     lastCommit: options.lastCommit,
     listTests: options.listTests,
     logHeapUsage: options.logHeapUsage,
+    longTestThreshold: options.longTestThreshold,
     maxConcurrency: options.maxConcurrency,
     maxWorkers: options.maxWorkers,
     noSCM: undefined,

packages/jest-config/src/normalize.ts

@@ -852,6 +852,7 @@ export default function normalize(
       case 'listTests':
       case 'logHeapUsage':
       case 'maxConcurrency':
+      case 'longTestThreshold':
       case 'mapCoverage':
       case 'name':
       case 'noStackTrace':
@@ -978,6 +979,11 @@ export default function normalize(
       ? 'all'
       : 'new';
 
+  newOptions.longTestThreshold = parseInt(
+    (newOptions.longTestThreshold as unknown) as string,
+    10,
+  );
+
   newOptions.maxConcurrency = parseInt(
     (newOptions.maxConcurrency as unknown) as string,
     10,

packages/jest-core/src/lib/__tests__/__snapshots__/log_debug_messages.test.ts.snap

@@ -90,6 +90,7 @@ exports[`prints the config object 1`] = `
     "lastCommit": false,
     "listTests": false,
     "logHeapUsage": false,
+    "longTestThreshold": 5,
     "maxConcurrency": 5,
     "maxWorkers": 2,
     "noSCM": null,

packages/jest-reporters/src/__tests__/get_result_header.test.js

@@ -11,7 +11,14 @@ const terminalLink = require('terminal-link');
 
 jest.mock('terminal-link', () => jest.fn(() => 'wannabehyperlink'));
 
+const endTime = 1577717671160;
+const testTime = 5500;
+
 const testResult = {
+  perfStats: {
+    end: endTime,
+    start: endTime - testTime,
+  },
   testFilePath: '/foo',
 };
 
@@ -36,3 +43,18 @@ test('should render the terminal link', () => {
 
   expect(result).toContain('wannabehyperlink');
 });
+
+test('should display long running test time', () => {
+  const result = getResultHeader(testResult, globalConfig);
+
+  expect(result).toContain(`${testTime / 1000}s`);
+});
+
+test('should not display long running test time since it is not over the custom threshold', () => {
+  const result = getResultHeader(
+    testResult,
+    makeGlobalConfig({longTestThreshold: 6}),
+  );
+
+  expect(result).not.toContain(`${testTime / 1000}s`);
+});

packages/jest-reporters/src/get_result_header.ts

@@ -46,7 +46,7 @@ export default (
     : null;
 
   const testDetail = [];
-  if (runTime !== null && runTime > 5) {
+  if (runTime !== null && runTime > globalConfig.longTestThreshold) {
     testDetail.push(LONG_TEST_COLOR(runTime + 's'));
   }
 

packages/jest-types/src/Config.ts

@@ -46,6 +46,7 @@ export type DefaultOptions = {
   forceCoverageMatch: Array<Glob>;
   globals: ConfigGlobals;
   haste: HasteConfig;
+  longTestThreshold: 5;
   maxConcurrency: number;
   maxWorkers: number | string;
   moduleDirectories: Array<string>;
@@ -136,6 +137,7 @@ export type InitialOptions = Partial<{
   logHeapUsage: boolean;
   lastCommit: boolean;
   listTests: boolean;
+  longTestThreshold: number;
   mapCoverage: boolean;
   maxConcurrency: number;
   maxWorkers: number | string;
@@ -259,6 +261,7 @@ export type GlobalConfig = {
   globalTeardown?: string;
   lastCommit: boolean;
   logHeapUsage: boolean;
+  longTestThreshold: number;
   listTests: boolean;
   maxConcurrency: number;
   maxWorkers: number;