added coverage and reporting to coveralls.io

Author: Hovhannes Babayan

.gitignore

@@ -5,3 +5,6 @@ node_modules
 # IntelliJ IDEA settings
 .idea
 *.iml
+
+# coverage reporter output
+coverage

gulpfile.js

@@ -1,27 +1,25 @@
 var gulp = require('gulp');
-var browserify = require('browserify');
-var source = require('vinyl-source-stream');
-var del = require('del');
-var mocha = require('gulp-mocha');
-var webserver = require('gulp-webserver');
 
 const BUILD_DIR = './dist/';
-
+const COVERAGE_DIR = 'coverage';
 
 gulp.task('default', ['clean', 'build']);
 
 /**
- * Empties BUILD_DIR
+ * Empties BUILD_DIR and all generated files
  */
 gulp.task('clean', function(cb) {
-	del([BUILD_DIR + '*'], cb);
+	var del = require('del');
+	del([BUILD_DIR + '*', COVERAGE_DIR], cb);
 });
 
 /**
  * Generates browser-ready version for API in BUILD_DIR
  * File will be named as api.js
  */
 gulp.task('build', function() {
+	var browserify = require('browserify');
+	var source = require('vinyl-source-stream');
 	return browserify(
 			'./src/api.js',
 			{
@@ -35,6 +33,7 @@ gulp.task('build', function() {
 
 
 gulp.task('serve', function() {
+	var webserver = require('gulp-webserver');
 	gulp.src('./')
 		.pipe(webserver({
 			hostname: 'localhost',
@@ -46,7 +45,32 @@ gulp.task('serve', function() {
 });
 
 
-gulp.task('test', function() {
+var runMocha = function() {
+	var mocha = require('gulp-mocha');
 	return gulp.src('test/**/*Spec.js', {read: false})
 		.pipe(mocha({}));
+};
+
+gulp.task('test', runMocha);
+
+gulp.task('test-coverage', function(cb) {
+	var mocha = require('gulp-mocha');
+	var istanbul = require('gulp-istanbul');
+
+	gulp.src(['src/**/*.js'])
+		.pipe(istanbul()) // Covering files
+		.pipe(istanbul.hookRequire()) // Force `require` to return covered files
+		.on('finish', function () {
+			runMocha()
+			.pipe(istanbul.writeReports()) // Creating the reports after tests runned
+			.on('end', cb);
+		});
 });
+
+gulp.task('test-coveralls', function() {
+	var coveralls = require('gulp-coveralls');
+	return gulp.src(COVERAGE_DIR + '/lcov.info')
+		.pipe(coveralls());
+});
+
+gulp.task('test-ci', ['clean', 'test-coverage', 'test-coveralls']);

package.json

@@ -11,12 +11,14 @@
     "chai": "^1.10.0",
     "del": "^1.1.0",
     "gulp": "^3.8.10",
+    "gulp-coveralls": "^0.1.3",
+    "gulp-istanbul": "^0.5.0",
     "gulp-mocha": "^2.0.0",
     "gulp-webserver": "^0.9.0",
     "vinyl-source-stream": "^1.0.0"
   },
   "scripts": {
-    "test": "gulp test"
+    "test": "gulp test-ci"
   },
   "repository": {
     "type": "git",