Add test on failOnFailingTestSuite

test/integration/fixtures/require-undefined.fixture.js

@@ -0,0 +1,11 @@
+// this generic fixture does nothing special and will be used if no fixture is supplied
+
+'use strict';
+
+var assert = require('assert');
+
+describe('a suite', function() {
+  it('should succeed', function() {
+    assert(false);
+  });
+});

test/integration/options/failOnFailingTestSuite.spec.js

@@ -0,0 +1,22 @@
+'use strict';
+
+var helpers = require('../helpers');
+var runMochaJSON = helpers.runMochaJSON;
+
+describe('--fail-on-failing-test-suite', function() {
+  var args = ['--fail-on-failing-test-suite=false'];
+
+  it('should success', function(done) {
+    var fixture = 'require-undefined.fixture.js';
+    runMochaJSON(fixture, args, function(err, res) {
+      if (err) {
+        return done(err);
+      }
+
+      expect(res, 'to have passed test count', 0)
+        .and('to have test count', 1)
+        .and('to have exit code', 0);
+      done();
+    });
+  });
+});

test/unit/mocha.spec.js

@@ -376,6 +376,28 @@ describe('Mocha', function() {
       });
     });
 
+    describe('failOnFailingTestSuite()', function() {
+      it('should set the failOnFailingTestSuite option to true', function() {
+        mocha.failOnFailingTestSuite();
+        expect(
+          mocha.options,
+          'to have property',
+          'failOnFailingTestSuite',
+          true
+        );
+      });
+
+      it('should set the failOnFailingTestSuite option to false', function() {
+        mocha.failOnFailingTestSuite(false);
+        expect(
+          mocha.options,
+          'to have property',
+          'failOnFailingTestSuite',
+          false
+        );
+      });
+    });
+
     describe('failZero()', function() {
       it('should set the failZero option to true', function() {
         mocha.failZero();