gulpfile.js

var gulp = require('gulp');
var gutil = require('gulp-util');
var jshint = require('gulp-jshint');
var stylish = require('jshint-stylish');
var mocha = require('gulp-mocha');
var config = {
    jshint: {
        src: './index.js'
    },
    test: {
        base: './test/',
        pattern: '**/*test.js'
    }
};

function runMochaSimply() {
    return gulp
        .src(config.test.base + config.test.pattern, {read: false})
        .pipe(mocha({
            ui: 'bdd',
            reporter: 'dot'
        }))
        .on('error', gutil.log);
}

gulp.task('watch', function () {
    gulp.watch(['index.js', 'test/**/*.js'], runMochaSimply);
    runMochaSimply();
});

gulp.task('lint', function() {
    return gulp.src(config.jshint.src)
        .pipe(jshint())
        .pipe(jshint.reporter(stylish));
});

gulp.task('unit', function () {
    return runMochaSimply();
});

gulp.task('test', gulp.task('unit'));