webpack/test/Compiler.test.js

Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jade, coffee, css, less, ... and your custom stuff.

var should = require("should");
var path = require("path");

var NodeEnvironmentPlugin = require("../lib/node/NodeEnvironmentPlugin");
var Compiler = require("../lib/Compiler");
var WebpackOptionsApply = require("../lib/WebpackOptionsApply");
var WebpackOptionsDefaulter = require("../lib/WebpackOptionsDefaulter");

describe("Compiler", function() {
	function compile(entry, options, callback) {
		new WebpackOptionsDefaulter().process(options);
		options.entry = entry;
		options.context = path.join(__dirname, "fixtures");
		options.output.pathinfo = true;

		var c = new Compiler();
		c.options = new WebpackOptionsApply().process(options, c);
		new NodeEnvironmentPlugin().apply(c);
		var files = {};
		c.outputFileSystem = {
			join: path.join.bind(path),
			mkdirp: function(path, callback) {
				callback();
			},
			writeFile: function(name, content, callback) {
				files[name] = content.toString("utf-8");
				callback();
			}
		};
		c.plugin("compilation", function(compilation) {
			compilation.bail = true;
		});
		c.run(function(err, stats) {
			if(err) throw err;
			should.strictEqual(typeof stats, "object");
			stats = stats.toJson({
				modules: true,
				reasons: true
			});
			should.strictEqual(typeof stats, "object");
			stats.should.have.property("errors");
			Array.isArray(stats.errors).should.be.ok;
			if(stats.errors.length > 0) {
				stats.errors[0].should.be.instanceOf(Error);
				throw stats.errors[0];
			}
			callback(stats, files);
		});
	}
	it("should compile a single file", function(done) {
		compile("./c", {}, function(stats, files) {
			files.should.have.property("bundle.js").have.type("string");
			Object.keys(files).should.be.eql(["bundle.js"]);
			var bundle = files["bundle.js"];
			bundle.should.containEql("function __webpack_require__(");
			bundle.should.containEql("__webpack_require__(/*! ./a */ 1);");
			bundle.should.containEql("./c.js");
			bundle.should.containEql("./a.js");
			bundle.should.containEql("This is a");
			bundle.should.containEql("This is c");
			bundle.should.not.containEql("2: function(");
			bundle.should.not.containEql("window");
			bundle.should.not.containEql("jsonp");
			bundle.should.not.containEql("fixtures");
			done();
		});
	});
	it("should compile a complex file", function(done) {
		compile("./main1", {}, function(stats, files) {
			files.should.have.property("bundle.js").have.type("string");
			Object.keys(files).should.be.eql(["bundle.js"]);
			var bundle = files["bundle.js"];
			bundle.should.containEql("function __webpack_require__(");
			bundle.should.containEql("__webpack_require__(/*! ./a */");
			bundle.should.containEql("./main1.js");
			bundle.should.containEql("./a.js");
			bundle.should.containEql("./b.js");
			bundle.should.containEql("./~/m1/a.js");
			bundle.should.containEql("This is a");
			bundle.should.containEql("This is b");
			bundle.should.containEql("This is m1/a");
			bundle.should.not.containEql("4: function(");
			bundle.should.not.containEql("window");
			bundle.should.not.containEql("jsonp");
			bundle.should.not.containEql("fixtures");
			done();
		});
	});
	it("should compile a file with transitive dependencies", function(done) {
		compile("./abc", {}, function(stats, files) {
			files.should.have.property("bundle.js").have.type("string");
			Object.keys(files).should.be.eql(["bundle.js"]);
			var bundle = files["bundle.js"];
			bundle.should.containEql("function __webpack_require__(");
			bundle.should.containEql("__webpack_require__(/*! ./a */");
			bundle.should.containEql("__webpack_require__(/*! ./b */");
			bundle.should.containEql("__webpack_require__(/*! ./c */");
			bundle.should.containEql("./abc.js");
			bundle.should.containEql("./a.js");
			bundle.should.containEql("./b.js");
			bundle.should.containEql("./c.js");
			bundle.should.containEql("This is a");
			bundle.should.containEql("This is b");
			bundle.should.containEql("This is c");
			bundle.should.not.containEql("4: function(");
			bundle.should.not.containEql("window");
			bundle.should.not.containEql("jsonp");
			bundle.should.not.containEql("fixtures");
			done();
		});
	});
	it("should compile a file with multiple chunks", function(done) {
		compile("./chunks", {}, function(stats, files) {
			stats.chunks.length.should.be.eql(2);
			files.should.have.property("bundle.js").have.type("string");
			files.should.have.property("1.bundle.js").have.type("string");
			Object.keys(files).should.be.eql(["bundle.js", "1.bundle.js"]);
			var bundle = files["bundle.js"];
			var chunk = files["1.bundle.js"];
			bundle.should.containEql("function __webpack_require__(");
			bundle.should.containEql("__webpack_require__(/*! ./b */");
			chunk.should.not.containEql("__webpack_require__(/* ./b */");
			bundle.should.containEql("./chunks.js");
			chunk.should.containEql("./a.js");
			chunk.should.containEql("./b.js");
			chunk.should.containEql("This is a");
			bundle.should.not.containEql("This is a");
			chunk.should.containEql("This is b");
			bundle.should.not.containEql("This is b");
			bundle.should.not.containEql("4: function(");
			bundle.should.not.containEql("fixtures");
			chunk.should.not.containEql("fixtures");
			bundle.should.containEql("webpackJsonp");
			chunk.should.containEql("webpackJsonp(");
			done();
		});
	});
});