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node_modules/tapable/lib/__tests__/MultiHook.js 1.87 KB
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  /*
  	MIT License http://www.opensource.org/licenses/mit-license.php
  	Author Tobias Koppers @sokra
  */
  "use strict";
  
  require("babel-polyfill");
  
  const MultiHook = require("../MultiHook");
  
  describe("MultiHook", () => {
  	const redirectedMethods = ["tap", "tapAsync", "tapPromise"];
  	for (const name of redirectedMethods) {
  		it(`should redirect ${name}`, () => {
  			const calls = [];
  			const fakeHook = {
  				[name]: (options, fn) => {
  					calls.push({ options, fn });
  				}
  			};
  			new MultiHook([fakeHook, fakeHook])[name]("options", "fn");
  			expect(calls).toEqual([
  				{ options: "options", fn: "fn" },
  				{ options: "options", fn: "fn" }
  			]);
  		});
  	}
  	it("should redirect intercept", () => {
  		const calls = [];
  		const fakeHook = {
  			intercept: interceptor => {
  				calls.push(interceptor);
  			}
  		};
  		new MultiHook([fakeHook, fakeHook]).intercept("interceptor");
  		expect(calls).toEqual(["interceptor", "interceptor"]);
  	});
  	it("should redirect withOptions", () => {
  		const calls = [];
  		const fakeHook = {
  			withOptions: options => {
  				calls.push(options);
  				return {
  					tap: (options, fn) => {
  						calls.push({ options, fn });
  					}
  				};
  			}
  		};
  		const newHook = new MultiHook([fakeHook, fakeHook]).withOptions("options");
  		newHook.tap("options", "fn");
  		expect(calls).toEqual([
  			"options",
  			"options",
  			{ options: "options", fn: "fn" },
  			{ options: "options", fn: "fn" }
  		]);
  	});
  	it("should redirect isUsed", () => {
  		const calls = [];
  		const fakeHook1 = {
  			isUsed: () => {
  				return true;
  			}
  		};
  		const fakeHook2 = {
  			isUsed: () => {
  				return false;
  			}
  		};
  		expect(new MultiHook([fakeHook1, fakeHook1]).isUsed()).toEqual(true);
  		expect(new MultiHook([fakeHook1, fakeHook2]).isUsed()).toEqual(true);
  		expect(new MultiHook([fakeHook2, fakeHook1]).isUsed()).toEqual(true);
  		expect(new MultiHook([fakeHook2, fakeHook2]).isUsed()).toEqual(false);
  	});
  });