webpack/test/TestCases.test.js

var should = require("should");
var path = require("path");
var fs = require("fs");
var vm = require("vm");
var Test = require("mocha/lib/test");
var checkArrayExpectation = require("./checkArrayExpectation");

var webpack = require("../lib/webpack");

describe("TestCases", function() {
	var casesPath = path.join(__dirname, "cases");
	var categories = fs.readdirSync(casesPath);
	categories = categories.map(function(cat) {
		return {
			name: cat,
			tests: fs.readdirSync(path.join(casesPath, cat)).filter(function(folder) {
				return folder.indexOf("_") < 0;
			})
		};
	});
	[
		{ name: "normal" },
		{ name: "hot", plugins: [
			new webpack.HotModuleReplacementPlugin()
		]},
		{ name: "devtool-eval", devtool: "eval" },
		{ name: "devtool-eval-source-map", devtool: "#eval-source-map" },
		{ name: "devtool-source-map", devtool: "#@source-map" },
		{ name: "minimized", plugins: [
			new webpack.optimize.UglifyJsPlugin({
				sourceMap: false
			})
		]},
		{ name: "minimized-source-map", plugins: [
			new webpack.optimize.UglifyJsPlugin()
		]},
		{ name: "deduped", plugins: [
			new webpack.optimize.DedupePlugin()
		]},
		{ name: "minimized-deduped", plugins: [
			new webpack.optimize.DedupePlugin(),
			new webpack.optimize.UglifyJsPlugin()
		]},
		{ name: "optimized", plugins: [
			new webpack.optimize.DedupePlugin(),
			new webpack.optimize.OccurenceOrderPlugin(),
			new webpack.optimize.UglifyJsPlugin()
		]},
		{ name: "all-combined", devtool: "#@source-map", plugins: [
			new webpack.HotModuleReplacementPlugin(),
			new webpack.optimize.DedupePlugin(),
			new webpack.optimize.OccurenceOrderPlugin(),
			new webpack.optimize.UglifyJsPlugin()
		]}
	].forEach(function(config) {
		describe(config.name, function() {
			categories.forEach(function(category) {
				describe(category.name, function() {
					category.tests.forEach(function(testName) {
						var suite = describe(testName, function() {});
						it(testName + " should compile", function(done) {
							this.timeout(10000);
							var testDirectory = path.join(casesPath, category.name, testName);
							var outputDirectory = path.join(__dirname, "js", config.name, category.name, testName);
							var options = {
								context: casesPath,
								entry: "./" + category.name + "/" + testName +"/index",
								target: "async-node",
								devtool: config.devtool,
								output: {
									pathinfo: true,
									path: outputDirectory,
									filename: "bundle.js"
								},
								resolve: {
									modulesDirectories: ["web_modules", "node_modules"],
									packageMains: ["webpack", "browser", "web", "browserify", ["jam", "main"], "main"],
									extensions: ["", ".webpack.js", ".web.js", ".js"],
									packageAlias: "browser"
								},
								resolveLoader: {
									modulesDirectories: ["web_loaders", "web_modules", "node_loaders", "node_modules"],
									packageMains: ["webpackLoader", "webLoader", "loader", "main"],
									extensions: ["", ".webpack-loader.js", ".web-loader.js", ".loader.js", ".js"]
								},
								module: {
									loaders: [
										{ test: /\.json$/, loader: "json" },
										{ test: /\.coffee$/, loader: "coffee" },
										{ test: /\.jade$/, loader: "jade" }
									]
								},
								plugins: (config.plugins || []).concat(
									new webpack.dependencies.LabeledModulesPlugin()
								)
							};
							webpack(options, function(err, stats) {
								if(err) return done(err);
								var jsonStats = stats.toJson({
									errorDetails: true
								});
								if(checkArrayExpectation(testDirectory, jsonStats, "error", "Error", done)) return;
								if(checkArrayExpectation(testDirectory, jsonStats, "warning", "Warning", done)) return;
								var exportedTest = 0;
								function _it(title, fn) {
									var test = new Test(title, fn);
									suite.addTest(test);
									exportedTest++;
									return test;
								}
								function _require(module) {
									if(module.substr(0, 2) === "./") {
										var p = path.join(outputDirectory, module);
										var fn = vm.runInThisContext("(function(require, module, exports, __dirname, it) {" + fs.readFileSync(p, "utf-8") + "\n})", p);
										var module = { exports: {} };
										fn.call(module.exports, _require, module, module.exports, outputDirectory, _it);
										return module.exports;
									} else return require(module);
								}
								_require("./bundle.js");
								if(exportedTest === 0) return done(new Error("No tests exported by test case"));
								done();
							});
						});
					});
				});
			});
		});
	});
});