webpack/test/polyfills.js

Packs CommonJs Modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loading of js, json, jade, coffee, css, ... out of the box and more with custom loaders.

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
var should = require("should");
var path = require("path");
require = require("../require-polyfill")(require.valueOf());

describe("polyfill", function() {

	describe("require.context", function() {
		var context = require.context("./fixtures")

		it("should be able to require a file without extension", function() {
			var a = context("./a");
			should.exist(a);
			a.should.be.a("function");
			a().should.be.equal("This is a");
		});

		it("should be able to require a file with extension", function() {
			var a = context("./a.js");
			should.exist(a);
			a.should.be.a("function");
			a().should.be.equal("This is a");
		});

		it("should be able to require a file in a subdirectory", function() {
			var complex1 = context("./lib/complex1");
			should.exist(complex1);
			complex1.should.be.equal("lib complex1");
		});

		it("should throw an exception if the module does not exists", function() {
			(function() {
				context("./notExists.js");
			}).should.throw(/Cannot find module/);
		});
	});

	describe("require.ensure", function() {
		it("should be executed synchron", function() {
			var executed = false;
			var oldRequire = require;
			require.ensure([], function(require) {
				executed = true;
				should.exist(require);
				require.should.be.a("function");
				require.should.be.equal(oldRequire);
			});
			executed.should.be.ok;
		});
		
		it("should work with modules list", function() {
			require.ensure(["./fixtures/a"], function(require) {
				var a = require("./fixtures/a");
				should.exist(a);
				a.should.be.a("function");
				a().should.be.equal("This is a");
			});
		});
	});

	describe("loader", function() {
		describe("raw", function() {
			it("should load abc", function() {
				var abc = require("raw!./fixtures/abc.txt");
				should.exist(abc);
				abc.should.be.equal("abc");
			});
		});
		
		describe("json", function() {
			it("should load the package.json", function() {
				var packageJson = require("json!../package.json");
				should.exist(packageJson);
				packageJson.should.be.a("object");
				packageJson.should.have.ownProperty("name", "webpack");
			});
		});
		
		describe("jade", function() {
			it("should load the template", function() {
				var template = require("jade!./browsertest/resources/template.jade")
				should.exist(template);
				template.should.be.a("function");
				template({abc: "abc"}).should.be.equal("<p>abc</p>");
			});
		});
		
		describe("coffee", function() {
			it("should load a script", function() {
				var coffee = require("coffee!./browsertest/resources/script.coffee");
				should.exist(coffee);
				coffee.should.be.equal("coffee test");
			});
		});
		
		describe("css", function() {
			it("should load css and resolve imports", function() {
				var css = require("css!./browsertest/css/stylesheet.css");
				should.exist(css);
				css.should.include(".rule-direct");
				css.should.include(".rule-import1");
				css.should.include(".rule-import2");
			});
		});
		
		describe("less", function() {
			it("should compile to css and resolve imports", function() {
				var css = require("less!./browsertest/less/stylesheet.less");
				should.exist(css);
				css.should.include(".less-rule-direct");
				css.should.include(".less-rule-import1");
				css.should.include(".less-rule-import2");
			});
		});
		
		describe("cache", function() {
			it("json should be identical if required two times", function() {
				var p1 = require("json!../package.json");
				var p2 = require("json!../package.json");
				p1.should.be.equal(p2);
			});
			
			it("jade function should be identical if required two times", function() {
				var p1 = require("jade!./browsertest/resources/template.jade");
				var p2 = require("jade!./browsertest/resources/template.jade");
				p1.should.be.equal(p2);
			});
		});
	});
	
	describe("loader to extension mapping", function() {
		function testRequire(ext, testName, okName) {
			it("should map ." + ext, function() {
				var okValue = require(okName);
				var testValue = require(testName);
				should.exist(testValue);
				testValue.toString().should.eql(okValue.toString());
			});
		}
		testRequire("json", "json!../package.json", "../package.json");
		testRequire("jade", "jade!./browsertest/resources/template.jade", "./browsertest/resources/template.jade");
		testRequire("coffee", "coffee!./browsertest/resources/script.coffee", "./browsertest/resources/script.coffee");
	});
});