(function () {

  'use strict';
  var path = require('path');
  var gulp = require('gulp');
  var excludeGitignore = require('gulp-exclude-gitignore');
  var mocha = require('gulp-mocha');
  var istanbul = require('gulp-istanbul');
  var nsp = require('gulp-nsp');
  var plumber = require('gulp-plumber');

  gulp.task('nsp', function (cb) {
    nsp({package: path.resolve('package.json')}, cb);
  });

  gulp.task('pre-test', function () {
    return gulp.src('generators/**/*.js')
      .pipe(excludeGitignore())
      .pipe(istanbul({
        includeUntested: true
      }))
      .pipe(istanbul.hookRequire());
  });

  gulp.task('test', ['pre-test'], function (cb) {
    var mochaErr;

    gulp.src('test/**/*.js')
      .pipe(plumber())
      .pipe(mocha({reporter: 'spec'}))
      .on('error', function (err) {
        mochaErr = err;
      })
      .pipe(istanbul.writeReports())
      .on('end', function () {
        cb(mochaErr);
      });
  });

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

  gulp.task('prepublish', ['nsp']);
  gulp.task('default', ['test']);

})();