bluebird-ff/test/and.js

Functional/Control-Flow utilities for Bluebird

var chai = require('chai');
var Promise = require('../lib');
var expect = chai.expect;

chai.use(require('chai-as-promised'));

describe('and', function() {
	it('should append the result with the previous result', function() {
		var promise = Promise.resolve('123')
		.and(function(value) {
			expect(value).to.eql('123');

			return '456';
		});

		return expect(promise).to.eventually.eql(['123', '456']);
	});

	it('should not append the result if the previous result was not created by and', function() {
		var promise = Promise.resolve(['123'])
		.and(function(value) {
			expect(value).to.eql(['123']);

			return ['456'];
		})
		.and(function(value, value2) {
			expect(value).to.eql(['123']);
			expect(value2).to.eql(['456']);

			return 'abc';
		});

		return expect(promise).to.eventually.eql([['123'], ['456'], 'abc']);
	});
});