text: /* globals describe, it */
  "use strict";
  
  const path = require("path");
  
  const webpack = require("../");
  const WebpackOptionsDefaulter = require("../lib/WebpackOptionsDefaulter");
  const MemoryFs = require("memory-fs");
  
  describe("Compiler", () => {
  	jest.setTimeout(20000);
  	function compile(entry, options, callback) {
  		const noOutputPath = !options.output || !options.output.path;
  		if (!options.mode) options.mode = "production";
  		options = new WebpackOptionsDefaulter().process(options);
  		options.entry = entry;
  		options.context = path.join(__dirname, "fixtures");
  		if (noOutputPath) options.output.path = "/";
  		options.output.pathinfo = true;
  		options.optimization = {
  			minimize: false
  		};
  		const logs = {
  			mkdir: [],
  			writeFile: []
  		};
  
  		const c = webpack(options);
  		const files = {};
  		c.outputFileSystem = {
  			join() {
  				return [].join.call(arguments, "/").replace(/\/+/g, "/");
  			},
  			mkdir(path, options, callback) {
  				logs.mkdir.push(path);
  				callback();
  			},
  			writeFile(name, content, callback) {
  				logs.writeFile.push(name, content);
  				files[name] = content.toString("utf-8");
  				callback();
  			}
  		};
  		c.hooks.compilation.tap(
  			"CompilerTest",
  			compilation => (compilation.bail = true)
  		);
  		c.run((err, stats) => {
  			if (err) throw err;
  			expect(typeof stats).toBe("object");
  			const compilation = stats.compilation;
  			stats = stats.toJson({
  				modules: true,
  				reasons: true
  			});
  			expect(typeof stats).toBe("object");
  			expect(stats).toHaveProperty("errors");
  			expect(Array.isArray(stats.errors)).toBe(true);
  			if (stats.errors.length > 0) {
  				expect(stats.errors[0]).toBeInstanceOf(Error);
  				throw stats.errors[0];
  			}
  			stats.logs = logs;
  			callback(stats, files, compilation);
  		});
  	}
  
  	it("should compile a single file to deep output", done => {
  		compile(
  			"./c",
  			{
  				output: {
  					path: "/what",
  					filename: "the/hell.js"
  				}
  			},
  			(stats, files) => {
  				expect(stats.logs.mkdir).toEqual(["/what", "/what/the"]);
  				done();
  			}
  		);
  	});
  
  	it("should compile a single file", done => {
  		compile("./c", {}, (stats, files) => {
  			expect(Object.keys(files)).toEqual(["/main.js"]);
  			const bundle = files["/main.js"];
  			expect(bundle).toMatch("function __webpack_require__(");
  			expect(bundle).toMatch(/__webpack_require__\(\/\*! \.\/a \*\/ \d\);/);
  			expect(bundle).toMatch("./c.js");
  			expect(bundle).toMatch("./a.js");
  			expect(bundle).toMatch("This is a");
  			expect(bundle).toMatch("This is c");
  			expect(bundle).not.toMatch("2: function(");
  			expect(bundle).not.toMatch("window");
  			expect(bundle).not.toMatch("jsonp");
  			expect(bundle).not.toMatch("fixtures");
  			done();
  		});
  	});
  
  	it("should compile a complex file", done => {
  		compile("./main1", {}, (stats, files) => {
  			expect(Object.keys(files)).toEqual(["/main.js"]);
  			const bundle = files["/main.js"];
  			expect(bundle).toMatch("function __webpack_require__(");
  			expect(bundle).toMatch("__webpack_require__(/*! ./a */");
  			expect(bundle).toMatch("./main1.js");
  			expect(bundle).toMatch("./a.js");
  			expect(bundle).toMatch("./b.js");
  			expect(bundle).toMatch("./node_modules/m1/a.js");
  			expect(bundle).toMatch("This is a");
  			expect(bundle).toMatch("This is b");
  			expect(bundle).toMatch("This is m1/a");
  			expect(bundle).not.toMatch("4: function(");
  			expect(bundle).not.toMatch("window");
  			expect(bundle).not.toMatch("jsonp");
  			expect(bundle).not.toMatch("fixtures");
  			done();
  		});
  	});
  
  	it("should compile a file with transitive dependencies", done => {
  		compile("./abc", {}, (stats, files) => {
  			expect(Object.keys(files)).toEqual(["/main.js"]);
  			const bundle = files["/main.js"];
  			expect(bundle).toMatch("function __webpack_require__(");
  			expect(bundle).toMatch("__webpack_require__(/*! ./a */");
  			expect(bundle).toMatch("__webpack_require__(/*! ./b */");
  			expect(bundle).toMatch("__webpack_require__(/*! ./c */");
  			expect(bundle).toMatch("./abc.js");
  			expect(bundle).toMatch("./a.js");
  			expect(bundle).toMatch("./b.js");
  			expect(bundle).toMatch("./c.js");
  			expect(bundle).toMatch("This is a");
  			expect(bundle).toMatch("This is b");
  			expect(bundle).toMatch("This is c");
  			expect(bundle).not.toMatch("4: function(");
  			expect(bundle).not.toMatch("window");
  			expect(bundle).not.toMatch("jsonp");
  			expect(bundle).not.toMatch("fixtures");
  			done();
  		});
  	});
  
  	it("should compile a file with multiple chunks", done => {
  		compile("./chunks", {}, (stats, files) => {
  			expect(stats.chunks).toHaveLength(2);
  			expect(Object.keys(files)).toEqual(["/main.js", "/1.js"]);
  			const bundle = files["/main.js"];
  			const chunk = files["/1.js"];
  			expect(bundle).toMatch("function __webpack_require__(");
  			expect(bundle).toMatch("__webpack_require__(/*! ./b */");
  			expect(chunk).not.toMatch("__webpack_require__(/* ./b */");
  			expect(bundle).toMatch("./chunks.js");
  			expect(chunk).toMatch("./a.js");
  			expect(chunk).toMatch("./b.js");
  			expect(chunk).toMatch("This is a");
  			expect(bundle).not.toMatch("This is a");
  			expect(chunk).toMatch("This is b");
  			expect(bundle).not.toMatch("This is b");
  			expect(bundle).not.toMatch("4: function(");
  			expect(bundle).not.toMatch("fixtures");
  			expect(chunk).not.toMatch("fixtures");
  			expect(bundle).toMatch("webpackJsonp");
  			expect(chunk).toMatch('window["webpackJsonp"] || []).push');
  			done();
  		});
  	});
  	describe("methods", () => {
  		let compiler;
  		beforeEach(() => {
  			compiler = webpack({
  				entry: "./c",
  				context: path.join(__dirname, "fixtures"),
  				output: {
  					path: "/",
  					pathinfo: true
  				}
  			});
  		});
  		describe("purgeInputFileSystem", () => {
  			it("invokes purge() if inputFileSystem.purge", done => {
  				const mockPurge = jest.fn();
  				compiler.inputFileSystem = {
  					purge: mockPurge
  				};
  				compiler.purgeInputFileSystem();
  				expect(mockPurge.mock.calls.length).toBe(1);
  				done();
  			});
  			it("does NOT invoke purge() if !inputFileSystem.purge", done => {
  				const mockPurge = jest.fn();
  				compiler.inputFileSystem = null;
  				compiler.purgeInputFileSystem();
  				expect(mockPurge.mock.calls.length).toBe(0);
  				done();
  			});
  		});
  		describe("isChild", () => {
  			it("returns booleanized this.parentCompilation", done => {
  				compiler.parentCompilation = "stringyStringString";
  				const response1 = compiler.isChild();
  				expect(response1).toBe(true);
  
  				compiler.parentCompilation = 123456789;
  				const response2 = compiler.isChild();
  				expect(response2).toBe(true);
  
  				compiler.parentCompilation = {
  					what: "I belong to an object"
  				};
  				const response3 = compiler.isChild();
  				expect(response3).toBe(true);
  
  				compiler.parentCompilation = ["Array", 123, true, null, [], () => {}];
  				const response4 = compiler.isChild();
  				expect(response4).toBe(true);
  
  				compiler.parentCompilation = false;
  				const response5 = compiler.isChild();
  				expect(response5).toBe(false);
  
  				compiler.parentCompilation = 0;
  				const response6 = compiler.isChild();
  				expect(response6).toBe(false);
  
  				compiler.parentCompilation = null;
  				const response7 = compiler.isChild();
  				expect(response7).toBe(false);
  
  				compiler.parentCompilation = "";
  				const response8 = compiler.isChild();
  				expect(response8).toBe(false);
  
  				compiler.parentCompilation = NaN;
  				const response9 = compiler.isChild();
  				expect(response9).toBe(false);
  				done();
  			});
  		});
  	});
  	it("should not emit on errors", done => {
  		const compiler = webpack({
  			context: __dirname,
  			mode: "production",
  			entry: "./missing",
  			output: {
  				path: "/",
  				filename: "bundle.js"
  			}
  		});
  		compiler.outputFileSystem = new MemoryFs();
  		compiler.run((err, stats) => {
  			if (err) return done(err);
  			if (compiler.outputFileSystem.existsSync("/bundle.js"))
  				return done(new Error("Bundle should not be created on error"));
  			done();
  		});
  	});
  	it("should not emit on errors (watch)", done => {
  		const compiler = webpack({
  			context: __dirname,
  			mode: "production",
  			entry: "./missing",
  			output: {
  				path: "/",
  				filename: "bundle.js"
  			}
  		});
  		compiler.outputFileSystem = new MemoryFs();
  		const watching = compiler.watch({}, (err, stats) => {
  			watching.close();
  			if (err) return done(err);
  			if (compiler.outputFileSystem.existsSync("/bundle.js"))
  				return done(new Error("Bundle should not be created on error"));
  			done();
  		});
  	});
  	it("should not be run twice at a time (run)", function(done) {
  		const compiler = webpack({
  			context: __dirname,
  			mode: "production",
  			entry: "./c",
  			output: {
  				path: "/",
  				filename: "bundle.js"
  			}
  		});
  		compiler.outputFileSystem = new MemoryFs();
  		compiler.run((err, stats) => {
  			if (err) return done(err);
  		});
  		compiler.run((err, stats) => {
  			if (err) return done();
  		});
  	});
  	it("should not be run twice at a time (watch)", function(done) {
  		const compiler = webpack({
  			context: __dirname,
  			mode: "production",
  			entry: "./c",
  			output: {
  				path: "/",
  				filename: "bundle.js"
  			}
  		});
  		compiler.outputFileSystem = new MemoryFs();
  		compiler.watch({}, (err, stats) => {
  			if (err) return done(err);
  		});
  		compiler.watch({}, (err, stats) => {
  			if (err) return done();
  		});
  	});
  	it("should not be run twice at a time (run - watch)", function(done) {
  		const compiler = webpack({
  			context: __dirname,
  			mode: "production",
  			entry: "./c",
  			output: {
  				path: "/",
  				filename: "bundle.js"
  			}
  		});
  		compiler.outputFileSystem = new MemoryFs();
  		compiler.run((err, stats) => {
  			if (err) return done(err);
  		});
  		compiler.watch({}, (err, stats) => {
  			if (err) return done();
  		});
  	});
  	it("should not be run twice at a time (watch - run)", function(done) {
  		const compiler = webpack({
  			context: __dirname,
  			mode: "production",
  			entry: "./c",
  			output: {
  				path: "/",
  				filename: "bundle.js"
  			}
  		});
  		compiler.outputFileSystem = new MemoryFs();
  		compiler.watch({}, (err, stats) => {
  			if (err) return done(err);
  		});
  		compiler.run((err, stats) => {
  			if (err) return done();
  		});
  	});
  	it("should not be run twice at a time (instance cb)", function(done) {
  		const compiler = webpack(
  			{
  				context: __dirname,
  				mode: "production",
  				entry: "./c",
  				output: {
  					path: "/",
  					filename: "bundle.js"
  				}
  			},
  			() => {}
  		);
  		compiler.outputFileSystem = new MemoryFs();
  		compiler.run((err, stats) => {
  			if (err) return done();
  		});
  	});
  	it("should run again correctly after first compilation", function(done) {
  		const compiler = webpack({
  			context: __dirname,
  			mode: "production",
  			entry: "./c",
  			output: {
  				path: "/",
  				filename: "bundle.js"
  			}
  		});
  		compiler.outputFileSystem = new MemoryFs();
  		compiler.run((err, stats) => {
  			if (err) return done(err);
  
  			compiler.run((err, stats) => {
  				if (err) return done(err);
  				done();
  			});
  		});
  	});
  	it("should watch again correctly after first compilation", function(done) {
  		const compiler = webpack({
  			context: __dirname,
  			mode: "production",
  			entry: "./c",
  			output: {
  				path: "/",
  				filename: "bundle.js"
  			}
  		});
  		compiler.outputFileSystem = new MemoryFs();
  		compiler.run((err, stats) => {
  			if (err) return done(err);
  
  			compiler.watch({}, (err, stats) => {
  				if (err) return done(err);
  				done();
  			});
  		});
  	});
  	it("should run again correctly after first closed watch", function(done) {
  		const compiler = webpack({
  			context: __dirname,
  			mode: "production",
  			entry: "./c",
  			output: {
  				path: "/",
  				filename: "bundle.js"
  			}
  		});
  		compiler.outputFileSystem = new MemoryFs();
  		const watching = compiler.watch({}, (err, stats) => {
  			if (err) return done(err);
  		});
  		watching.close(() => {
  			compiler.run((err, stats) => {
  				if (err) return done(err);
  				done();
  			});
  		});
  	});
  	it("should watch again correctly after first closed watch", function(done) {
  		const compiler = webpack({
  			context: __dirname,
  			mode: "production",
  			entry: "./c",
  			output: {
  				path: "/",
  				filename: "bundle.js"
  			}
  		});
  		compiler.outputFileSystem = new MemoryFs();
  		const watching = compiler.watch({}, (err, stats) => {
  			if (err) return done(err);
  		});
  		watching.close(() => {
  			compiler.watch({}, (err, stats) => {
  				if (err) return done(err);
  				done();
  			});
  		});
  	});
  	it("should flag watchMode as true in watch", function(done) {
  		const compiler = webpack({
  			context: __dirname,
  			mode: "production",
  			entry: "./c",
  			output: {
  				path: "/",
  				filename: "bundle.js"
  			}
  		});
  
  		compiler.outputFileSystem = new MemoryFs();
  
  		const watch = compiler.watch({}, err => {
  			if (err) return done(err);
  			expect(compiler.watchMode).toBeTruthy();
  			watch.close(() => {
  				expect(compiler.watchMode).toBeFalsy();
  				done();
  			});
  		});
  	});
  	it("should use cache on second run call", function(done) {
  		const compiler = webpack({
  			context: __dirname,
  			mode: "development",
  			devtool: false,
  			entry: "./fixtures/count-loader!./fixtures/count-loader",
  			output: {
  				path: "/"
  			}
  		});
  		compiler.outputFileSystem = new MemoryFs();
  		compiler.run(() => {
  			compiler.run(() => {
  				const result = compiler.outputFileSystem.readFileSync(
  					"/main.js",
  					"utf-8"
  				);
  				expect(result).toContain("module.exports = 0;");
  				done();
  			});
  		});
  	});
  });
  