examples.test.js

var assert = require('assert');
var Kareem = require('../');

describe('pre hooks', function() {
  var hooks;

  beforeEach(function() {
    hooks = new Kareem();
  });

  it('runs without any hooks specified', function(done) {
    hooks.execPre('cook', null, function() {
      done();
    });
  });

  it('runs basic serial pre hooks', function(done) {
    var count = 0;

    hooks.pre('cook', function(done) {
      ++count;
      done();
    });

    hooks.execPre('cook', null, function() {
      assert.equal(1, count);
      done();
    });
  });

  it('can run multipe pres', function(done) {
    var count1 = 0;
    var count2 = 0;

    hooks.pre('cook', function(done) {
      ++count1;
      done();
    });

    hooks.pre('cook', function(done) {
      ++count2;
      done();
    });

    hooks.execPre('cook', null, function() {
      assert.equal(1, count1);
      assert.equal(1, count2);
      done();
    });
  });

  it('can run fully synchronous pres', function(done) {
    var count1 = 0;
    var count2 = 0;

    hooks.pre('cook', function() {
      ++count1;
    });

    hooks.pre('cook', function() {
      ++count2;
    });

    hooks.execPre('cook', null, function() {
      assert.equal(1, count1);
      assert.equal(1, count2);
      done();
    });
  });

  it('properly attaches context to pre hooks', function(done) {
    hooks.pre('cook', function(done) {
      this.bacon = 3;
      done();
    });

    hooks.pre('cook', function(done) {
      this.eggs = 4;
      done();
    });

    var obj = { bacon: 0, eggs: 0 };

    hooks.execPre('cook', obj, function() {
      assert.equal(3, obj.bacon);
      assert.equal(4, obj.eggs);
      done();
    });
  });

  it('can execute parallel (async) pre hooks', function(done) {
    hooks.pre('cook', true, function(next, done) {
      this.bacon = 3;
      next();
      setTimeout(function() {
        done();
      }, 5);
    });

    hooks.pre('cook', true, function(next, done) {
      next();
      var _this = this;
      setTimeout(function() {
        _this.eggs = 4;
        done();
      }, 10);
    });

    hooks.pre('cook', function(next) {
      this.waffles = false;
      next();
    });

    var obj = { bacon: 0, eggs: 0 };

    hooks.execPre('cook', obj, function() {
      assert.equal(3, obj.bacon);
      assert.equal(4, obj.eggs);
      assert.equal(false, obj.waffles);
      done();
    });
  });
});

describe('post hooks', function() {
  var hooks;

  beforeEach(function() {
    hooks = new Kareem();
  });

  it('runs without any hooks specified', function(done) {
    hooks.execPost('cook', null, [], function() {
      done();
    });
  });

  it('executes with parameters passed in', function(done) {
    hooks.post('cook', function(eggs, bacon, callback) {
      assert.equal(1, eggs);
      assert.equal(2, bacon);
      callback();
    });

    hooks.execPost('cook', null, [1, 2], function(error, eggs, bacon) {
      assert.ifError(error);
      assert.equal(1, eggs);
      assert.equal(2, bacon);
      done();
    });
  });
});