Install coverage metrics. Use gulp coverage to generate coverage reports

.gitignore

@@ -7,3 +7,5 @@ custom/*
 docs/index.md
 
 bower_components/
+
+coverage/*

gulpfile.js

@@ -111,6 +111,17 @@ gulp.task('unittest', function() {
 		}));
 });
 
+gulp.task('coverage', function() {
+	var files = srcFiles.slice();
+	files.push(testDir + '*.js');
+
+	return gulp.src(files)
+		.pipe(karma({
+			configFile: 'karma.coverage.conf.js',
+			action: 'run'
+		}));
+});
+
 gulp.task('library-size', function() {
 	return gulp.src('Chart.min.js')
 		.pipe(size({

karma.coverage.conf.js

@@ -0,0 +1,18 @@
+module.exports = function(config) {
+	config.set({
+		browsers: ['Chrome', 'Firefox'],
+
+		coverageReporter: {
+			type: 'html',
+			dir: 'coverage/'
+		},
+
+		frameworks: ['jasmine'],
+
+		preprocessors: {
+			'src/**/*.js': ['coverage']
+		},
+		
+		reporters: ['progress', 'coverage'],
+	});
+};

package.json

@@ -27,6 +27,7 @@
     "jquery": "^2.1.4",
     "karma": "^0.12.37",
     "karma-chrome-launcher": "^0.2.0",
+    "karma-coverage": "^0.5.1",
     "karma-firefox-launcher": "^0.1.6",
     "karma-jasmine": "^0.3.6",
     "onecolor": "^2.5.0",