Merge pull request #4001 from shubheksha/test-WebWorkerHotUpdateChunkTemplatePlugin

Added tests for WebWorkerChunkTemplatePlugin

test/WebWorkerChunkTemplatePlugin.test.js

@@ -0,0 +1,91 @@
+"use strict";
+
+const should = require("should");
+const sinon = require("sinon");
+const ConcatSource = require("webpack-sources").ConcatSource;
+const WebWorkerChunkTemplatePlugin = require("../lib/webworker/WebWorkerChunkTemplatePlugin");
+const applyPluginWithOptions = require("./helpers/applyPluginWithOptions");
+
+describe("WebWorkerChunkTemplatePlugin", () => {
+	let handlerContext;
+
+	beforeEach(() => {
+		handlerContext = {
+			outputOptions: {
+				chunkCallbackName: "Foo",
+				library: "Bar"
+			}
+		};
+	});
+
+	it("has apply function", () => {
+		(new WebWorkerChunkTemplatePlugin()).apply.should.be.a.Function();
+	});
+
+	describe("when applied", () => {
+		let eventBindings, eventBinding;
+
+		beforeEach(() => {
+			eventBindings = applyPluginWithOptions(WebWorkerChunkTemplatePlugin);
+		});
+
+		it("binds two event handlers", () => {
+			eventBindings.length.should.be.exactly(2);
+		});
+
+		describe("render handler", () => {
+			beforeEach(() => {
+				eventBinding = eventBindings[0];
+			});
+
+			it("binds to render event", () => {
+				eventBinding.name.should.be.exactly("render");
+			});
+
+			describe("with chunk call back name set", () => {
+				it("creates source wrapper with function name", () => {
+					const source = eventBinding.handler.call(handlerContext, "modules()", {
+						ids: 100,
+					});
+					source.should.be.instanceof(ConcatSource);
+					source.source().should.be.exactly("Foo(100,modules())");
+				});
+			});
+
+			describe("without chunk call back name set", () => {
+				it("creates source wrapper with library name", () => {
+					delete handlerContext.outputOptions.chunkCallbackName;
+					const source = eventBinding.handler.call(handlerContext, "modules()", {
+						ids: 100,
+					});
+					source.should.be.instanceof(ConcatSource);
+					source.source().should.be.exactly("webpackChunkBar(100,modules())");
+				});
+			});
+		});
+
+		describe("hash handler", () => {
+			var hashMock;
+
+			beforeEach(() => {
+				eventBinding = eventBindings[1];
+				hashMock = {
+					update: sinon.spy()
+				};
+			});
+
+			it("binds to hash event", () => {
+				eventBinding.name.should.be.exactly("hash");
+			});
+
+			it("updates hash object", () => {
+				eventBinding.handler.call(handlerContext, hashMock);
+				hashMock.update.callCount.should.be.exactly(4);
+				sinon.assert.calledWith(hashMock.update, "webworker");
+				sinon.assert.calledWith(hashMock.update, "3");
+				sinon.assert.calledWith(hashMock.update, "Foo");
+				sinon.assert.calledWith(hashMock.update, "Bar");
+			});
+		});
+	});
+});