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TheLarkInnTheLarkInn
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Merge pull request webpack#3866 from alistairjcbrown/add-webworkermaintemplateplugin-tests
Add tests for WebWorkerMainTemplatePlugin
2 parents a01eeb6 + 9b301f9 commit 47c2782

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‎test/WebWorkerMainTemplatePlugin.test.js‎

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var should = require("should");
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var sinon = require("sinon");
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var WebWorkerMainTemplatePlugin = require("../lib/webworker/WebWorkerMainTemplatePlugin");
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var applyPluginWithOptions = require("./helpers/applyPluginWithOptions");
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describe("WebWorkerMainTemplatePlugin", function() {
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var env;
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beforeEach(function() {
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env = {};
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});
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it("has apply function", function() {
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(new WebWorkerMainTemplatePlugin()).apply.should.be.a.Function();
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});
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describe("when applied", function() {
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beforeEach(function() {
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env.eventBindings = applyPluginWithOptions(WebWorkerMainTemplatePlugin);
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env.handlerContext = {
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requireFn: 'requireFn',
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indent: (value) => typeof value === 'string' ? value : value.join("\n"),
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asString: (values) => values.join("\n"),
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renderCurrentHashCode: (value) => value,
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outputOptions: {
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chunkFilename: 'chunkFilename'
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},
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applyPluginsWaterfall: (moduleName, fileName, data) => {
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return '"' + moduleName + data.hash + data.hashWithLength() + (data.chunk && data.chunk.id || '') + '"';
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},
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renderAddModule: () => 'renderAddModuleSource();',
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};
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});
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it("binds five event handlers", function() {
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env.eventBindings.length.should.be.exactly(5);
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});
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describe("local-vars handler", function() {
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beforeEach(function() {
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env.eventBinding = env.eventBindings[0];
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});
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it("binds to local-vars event", function() {
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env.eventBinding.name.should.be.exactly("local-vars");
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});
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describe("when no chunks are provided", function() {
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beforeEach(function() {
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var chunk = {
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ids: [],
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chunks: []
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};
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env.source = env.eventBinding.handler.call(env.handlerContext, "moduleSource()", chunk);
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});
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it("returns the original source", function() {
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env.source.should.be.exactly("moduleSource()")
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});
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});
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describe("when chunks are provided", function() {
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beforeEach(function() {
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var chunk = {
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ids: [1, 2, 3],
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chunks: [
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'foo',
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'bar',
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'baz'
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]
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};
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env.source = env.eventBinding.handler.call(env.handlerContext, "moduleSource()", chunk, 'abc123');
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});
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it("returns the original source with installed mapping", function() {
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env.source.should.be.exactly(`
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moduleSource()
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// object to store loaded chunks
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// "1" means "already loaded"
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var installedChunks = {
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1: 1,
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2: 1,
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3: 1
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};
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`.trim())
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});
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});
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});
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describe("require-ensure handler", function() {
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beforeEach(function() {
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env.eventBinding = env.eventBindings[1];
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});
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it("binds to require-ensure event", function() {
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env.eventBinding.name.should.be.exactly("require-ensure");
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});
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describe("when called", function() {
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beforeEach(function() {
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var chunk = {};
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env.source = env.eventBinding.handler.call(env.handlerContext, "moduleSource()", chunk, 'abc123');
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});
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it("creates import scripts call and promise resolve", function() {
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env.source.should.be.exactly(`
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// "1" is the signal for "already loaded"
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if(!installedChunks[chunkId]) {
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importScripts("asset-path" + abc123 + "" + abc123 + "" + chunkId + "");
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}
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return Promise.resolve();
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`.trim())
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});
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});
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});
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describe("bootstrap handler", function() {
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beforeEach(function() {
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env.eventBinding = env.eventBindings[2];
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});
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it("binds to bootstrap event", function() {
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env.eventBinding.name.should.be.exactly("bootstrap");
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});
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describe("when no chunks are provided", function() {
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beforeEach(function() {
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var chunk = {
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ids: [],
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chunks: []
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};
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env.source = env.eventBinding.handler.call(env.handlerContext, "moduleSource()", chunk);
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});
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it("returns the original source", function() {
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env.source.should.be.exactly("moduleSource()")
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});
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});
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describe("when chunks are provided", function() {
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beforeEach(function() {
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var chunk = {
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ids: [1, 2, 3],
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chunks: [
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'foo',
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'bar',
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'baz'
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]
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};
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env.source = env.eventBinding.handler.call(env.handlerContext, "moduleSource()", chunk);
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});
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it("returns the original source with chunk callback", function() {
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env.source.should.be.exactly(`
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moduleSource()
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this["webpackChunk"] = function webpackChunkCallback(chunkIds, moreModules) {
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for(var moduleId in moreModules) {
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renderAddModuleSource();
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}
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while(chunkIds.length)
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installedChunks[chunkIds.pop()] = 1;
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};
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`.trim())
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});
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});
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});
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describe("hot-bootstrap handler", function() {
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beforeEach(function() {
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env.eventBinding = env.eventBindings[3];
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});
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it("binds to hot-bootstrap event", function() {
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env.eventBinding.name.should.be.exactly("hot-bootstrap");
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});
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describe("when called", function() {
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beforeEach(function() {
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var chunk = {};
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env.source = env.eventBinding.handler.call(env.handlerContext, "moduleSource()", chunk, 'abc123');
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});
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it("returns the original source with hot update callback", function() {
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env.source.should.be.exactly(`
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moduleSource()
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var parentHotUpdateCallback = this["webpackHotUpdate"];
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this["webpackHotUpdate"] = function webpackHotUpdateCallback(chunkId, moreModules) { // eslint-disable-line no-unused-vars
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hotAddUpdateChunk(chunkId, moreModules);
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if(parentHotUpdateCallback) parentHotUpdateCallback(chunkId, moreModules);
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} ;
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function hotDownloadUpdateChunk(chunkId) { // eslint-disable-line no-unused-vars
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importScripts(requireFn.p + "asset-path" + abc123 + "" + abc123 + "" + chunkId + "");
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}
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function hotDownloadManifest(callback) { // eslint-disable-line no-unused-vars
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return new Promise(function(resolve, reject) {
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if(typeof XMLHttpRequest === "undefined")
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return reject(new Error("No browser support"));
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try {
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var request = new XMLHttpRequest();
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var requestPath = requireFn.p + "asset-path" + abc123 + "" + abc123 + "";
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request.open("GET", requestPath, true);
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request.timeout = 10000;
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request.send(null);
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} catch(err) {
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return reject(err);
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}
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request.onreadystatechange = function() {
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if(request.readyState !== 4) return;
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if(request.status === 0) {
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// timeout
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reject(new Error("Manifest request to " + requestPath + " timed out."));
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} else if(request.status === 404) {
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// no update available
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resolve();
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} else if(request.status !== 200 && request.status !== 304) {
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// other failure
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reject(new Error("Manifest request to " + requestPath + " failed."));
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} else {
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// success
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try {
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var update = JSON.parse(request.responseText);
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} catch(e) {
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reject(e);
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return;
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}
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resolve(update);
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}
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};
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});
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}
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function hotDisposeChunk(chunkId) { //eslint-disable-line no-unused-vars
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delete installedChunks[chunkId];
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}
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`.trim())
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});
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});
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});
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describe("hash handler", function() {
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beforeEach(function() {
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env.eventBinding = env.eventBindings[4];
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env.handlerContext = {
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outputOptions: {
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publicPath: "Alpha",
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filename: "Bravo",
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chunkFilename: "Charlie",
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chunkCallbackName: "Delta",
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library: "Echo"
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}
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};
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env.hashMock = {
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update: sinon.spy()
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};
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env.eventBinding.handler.call(env.handlerContext, env.hashMock);
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});
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it("binds to hash event", function() {
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env.eventBinding.name.should.be.exactly("hash");
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});
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it("updates hash object", function() {
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env.hashMock.update.callCount.should.be.exactly(7);
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sinon.assert.calledWith(env.hashMock.update, "webworker");
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sinon.assert.calledWith(env.hashMock.update, "3");
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sinon.assert.calledWith(env.hashMock.update, "Alpha");
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sinon.assert.calledWith(env.hashMock.update, "Bravo");
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sinon.assert.calledWith(env.hashMock.update, "Charlie");
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sinon.assert.calledWith(env.hashMock.update, "Delta");
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sinon.assert.calledWith(env.hashMock.update, "Echo");
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});
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});
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});
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});

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