Add tests

Author: Kocal

test/WebpackConfig.js

@@ -1065,4 +1065,29 @@ describe('WebpackConfig object', () => {
             }).to.throw('"foo" is not a valid key');
         });
     });
+
+    describe('configureDevServerWatchOptions()', () => {
+        it('Pass config', () => {
+            const config = createConfig();
+            const callback = (watchOptions) => {
+                watchOptions.poll = 250;
+            };
+
+            config.configureDevServerWatchOptions(callback);
+
+            expect(config.devServerWatchOptionsConfigurationCallback).to.equal(callback);
+        });
+
+        it('Call method without a valid callback', () => {
+            const config = createConfig();
+
+            expect(() => {
+                config.configureDevServerWatchOptions();
+            }).to.throw('Argument 1 to configureDevServerWatchOptions() must be a callback function.');
+
+            expect(() => {
+                config.configureDevServerWatchOptions({});
+            }).to.throw('Argument 1 to configureDevServerWatchOptions() must be a callback function.');
+        });
+    });
 });

test/config-generator.js

@@ -573,6 +573,26 @@ describe('The config-generator function', () => {
             const actualConfig = configGenerator(config);
             expect(actualConfig.devServer.hot).to.be.true;
         });
+
+        it('devServer with custom watch options', () => {
+            const config = createConfig();
+            config.runtimeConfig.useDevServer = true;
+            config.runtimeConfig.devServerUrl = 'http://localhost:8080/';
+            config.runtimeConfig.useHotModuleReplacement = true;
+            config.outputPath = isWindows ? 'C:\\tmp\\public' : '/tmp/public';
+            config.setPublicPath('/');
+            config.addEntry('main', './main');
+            
+            config.configureDevServerWatchOptions(watchOptions => {
+                watchOptions.poll = 250;
+            });
+
+            const actualConfig = configGenerator(config);
+            expect(actualConfig.devServer.watchOptions).to.deep.equals({
+                'ignored': /node_modules/,
+                'poll': 250,
+            });
+        });
     });
 
     describe('test for addPlugin config', () => {