git-pre-commit/gulp/tasks/tests.js

You can run the pre-commit with any build tool (Gulp, Grunt etc..) and it will ignore all the **unstaged changes** that wasn't added to the git index (using the command ```git add```).

/**
 * @fileoverview Initialization the tasks that are related to the tests
 */

const mocha = require('gulp-mocha');
const path = require('path');
const config = rootRequire('./gulp/config');

/**
 * Runs mocha on the given paths
 * @param {Gulp} gulp - the gulp instance
 * @param  {Array|string} paths the path to execute mocha on
 * @return {Stream} the gulp stream
 */
const runMocha = (gulp, paths) => {
  return gulp.src(paths, { read: false })
    // gulp-mocha needs filepaths so you can't have any plugins before it
    .pipe(mocha({ reporter: 'nyan' }));
};

/**
 * Initialize the gulp tasks regarding the tests
 * @param {Object} gulp - the gulp instance
 */
const registerTasks = (gulp) => {
  if (gulp) {
    // A task to test all the cases regarding the git hooks
    gulp.task('hooks:tests', [], () => {
      const hooksTestsPath = path.join(config.paths.tests.folder, config.paths.tests.hooks);
      runMocha(gulp, hooksTestsPath);
    });

    // A task to test all the cases regarding the git manager class
    gulp.task('git-manager:tests', [], () => {
      const gitManagerTestsPath = path.join(config.paths.tests.folder, config.paths.tests.gitManager);
      runMocha(gulp, gitManagerTestsPath);
    });
  }
};

module.exports = registerTasks;