invert the logic

integration_tests/__tests__/config.test.js

@@ -21,7 +21,7 @@ test('config as JSON', () => {
   ]);
   const stdout = result.stdout.toString();
 
-  expect(result.status).toBe(0);
+  expect(result.status).toBe(1);
   expect(stdout).toMatch('No tests found');
 });
 

integration_tests/__tests__/fail_with_no_tests-test.js → integration_tests/__tests__/pass_with_no_tests-test.js

@@ -13,28 +13,28 @@
 const path = require('path');
 const runJest = require('../runJest');
 
-const DIR = path.resolve(__dirname, '../fail_with_no_tests');
+const DIR = path.resolve(__dirname, '../pass_with_no_tests-test');
 
-describe('jest --failWithNoTests', () => {
-  test("doesn't fail the test suite if no files are found", () => {
+describe('jest --passWithNoTests', () => {
+  test('fails the test suite if no files are found', () => {
     const result = runJest(DIR, ['--testPathPattern', '/non/existing/path/']);
     const status = result.status;
     const stdout = result.stdout.toString();
 
     expect(stdout).toMatch('No tests found');
-    expect(status).toBe(0);
+    expect(status).toBe(1);
   });
 
-  test('fails the test suite if no files are found', () => {
+  test("doesn't fail the test suite if no files are found", () => {
     const result = runJest(DIR, [
       '--testPathPattern',
       '/non/existing/path/',
-      '--failWithNoTests',
+      '--passWithNoTests',
     ]);
     const status = result.status;
     const stdout = result.stdout.toString();
 
     expect(stdout).toMatch('No tests found');
-    expect(status).toBe(1);
+    expect(status).toBe(0);
   });
 });

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

@@ -208,12 +208,6 @@ const options = {
     description: 'Use this flag to show full diffs instead of a patch.',
     type: 'boolean',
   },
-  failWithNoTests: {
-    default: false,
-    description:
-      'Will fail if no tests are found (for example while using `--testPathPattern`.)',
-    type: 'boolean',
-  },
   findRelatedTests: {
     default: undefined,
     description:
@@ -346,6 +340,12 @@ const options = {
       'also specified.',
     type: 'string',
   },
+  passWithNoTests: {
+    default: false,
+    description:
+      'Will not fail if no tests are found (for example while using `--testPathPattern`.)',
+    type: 'boolean',
+  },
   preset: {
     description: "A preset that is used as a base for Jest's configuration.",
     type: 'string',

packages/jest-cli/src/run_jest.js

@@ -131,12 +131,12 @@ const runJest = async ({
       globalConfig,
     );
 
-    if (globalConfig.failWithNoTests) {
+    if (globalConfig.passWithNoTests) {
+      new Console(outputStream, outputStream).log(noTestsFoundMessage);
+    } else {
       new Console(outputStream, outputStream).error(noTestsFoundMessage);
 
       process.exit(1);
-    } else {
-      new Console(outputStream, outputStream).log(noTestsFoundMessage);
     }
   } else if (
     allTests.length === 1 &&

packages/jest-config/src/index.js

@@ -83,7 +83,6 @@ const getConfigs = (
       coverageReporters: options.coverageReporters,
       coverageThreshold: options.coverageThreshold,
       expand: options.expand,
-      failWithNoTests: options.failWithNoTests,
       findRelatedTests: options.findRelatedTests,
       forceExit: options.forceExit,
       json: options.json,
@@ -98,6 +97,7 @@ const getConfigs = (
       notify: options.notify,
       onlyChanged: options.onlyChanged,
       outputFile: options.outputFile,
+      passWithNoTests: options.passWithNoTests,
       projects: options.projects,
       replname: options.replname,
       reporters: options.reporters,

test_utils.js

@@ -22,7 +22,6 @@ const DEFAULT_GLOBAL_CONFIG: GlobalConfig = {
   coverageReporters: [],
   coverageThreshold: {global: {}},
   expand: false,
-  failWithNoTests: false,
   findRelatedTests: false,
   forceExit: false,
   json: false,
@@ -37,6 +36,7 @@ const DEFAULT_GLOBAL_CONFIG: GlobalConfig = {
   notify: false,
   onlyChanged: false,
   outputFile: null,
+  passWithNoTests: false,
   projects: [],
   replname: null,
   reporters: [],

types/Config.js

@@ -150,7 +150,6 @@ export type GlobalConfig = {|
   coverageReporters: Array<string>,
   coverageThreshold: {global: {[key: string]: number}},
   expand: boolean,
-  failWithNoTests: boolean,
   findRelatedTests: boolean,
   forceExit: boolean,
   json: boolean,
@@ -165,6 +164,7 @@ export type GlobalConfig = {|
   notify: boolean,
   outputFile: ?Path,
   onlyChanged: boolean,
+  passWithNoTests: boolean,
   projects: Array<Glob>,
   replname: ?string,
   reporters: Array<ReporterConfig>,