Fix "reporters: ['default']" config

integration_tests/__tests__/__snapshots__/custom-reporters-test.js.snap

@@ -64,6 +64,47 @@ Object {
 }
 `;
 
+exports[`Custom Reporters Integration default reporters enabled 1`] = `
+" PASS  __tests__/add-test.js
+  Custom Reporters
+    ✓ adds ok
+
+"
+`;
+
+exports[`Custom Reporters Integration default reporters enabled 2`] = `
+"Test Suites: 1 passed, 1 total
+Tests:       1 passed, 1 total
+Snapshots:   0 total
+Time:        <<REPLACED>>
+Ran all test suites matching \\"add-test.js\\".
+"
+`;
+
+exports[`Custom Reporters Integration default reporters enabled 3`] = `
+Object {
+  "onRunComplete": Object {
+    "called": true,
+    "numFailedTests": 0,
+    "numPassedTests": 1,
+    "numTotalTests": 1,
+  },
+  "onRunStart": Object {
+    "called": true,
+    "options": "object",
+  },
+  "onTestResult": Object {
+    "called": true,
+    "times": 1,
+  },
+  "onTestStart": Object {
+    "called": true,
+    "path": false,
+  },
+  "options": Object {},
+}
+`;
+
 exports[`Custom Reporters Integration invalid format for adding reporters 1`] = `
 "●  Reporter Validation Error:
 

integration_tests/__tests__/custom-reporters-test.js

@@ -8,6 +8,7 @@
 'use strict';
 
 const skipOnWindows = require('skipOnWindows');
+const {extractSummary} = require('../utils');
 const runJest = require('../runJest');
 
 describe('Custom Reporters Integration', () => {
@@ -58,6 +59,24 @@ describe('Custom Reporters Integration', () => {
     expect(stderr).toMatchSnapshot();
   });
 
+  test('default reporters enabled', () => {
+    const {stderr, stdout, status} = runJest('custom_reporters', [
+      '--config',
+      JSON.stringify({
+        reporters: ['default', '<rootDir>/reporters/TestReporter.js'],
+      }),
+      'add-test.js',
+    ]);
+
+    const {summary, rest} = extractSummary(stderr);
+    const parsedJSON = JSON.parse(stdout);
+
+    expect(status).toBe(0);
+    expect(rest).toMatchSnapshot();
+    expect(summary).toMatchSnapshot();
+    expect(parsedJSON).toMatchSnapshot();
+  });
+
   test('TestReporter with all tests passing', () => {
     const {stdout, status, stderr} = runJest('custom_reporters', [
       'add-test.js',

packages/jest-cli/src/TestRunner.js

@@ -329,7 +329,7 @@ class TestRunner {
 
   _addCustomReporters(reporters: Array<ReporterConfig>) {
     const customReporters = reporters.filter(
-      reporter => reporter !== 'default',
+      reporterConfig => reporterConfig[0] !== 'default',
     );
 
     customReporters.forEach((reporter, index) => {