tapable/lib/__tests__/Tapable.js

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
"use strict";

const Tapable = require("../Tapable");
const SyncHook = require("../SyncHook");
const HookMap = require("../HookMap");

describe("Tapable", () => {
	it("should use same name or camelCase hook by default", () => {
		const t = new Tapable();
		t.hooks = {
			myHook: new SyncHook()
		};
		let called = 0;
		t.plugin("my-hook", () => called++);
		t.hooks.myHook.call();
		t.plugin("myHook", () => called += 10);
		t.hooks.myHook.call();
		expect(called).toEqual(12);
	});

	it("should throw on unknown hook", () => {
		const t = new Tapable();
		t.hooks = {
			myHook: new SyncHook()
		};
		expect(() => {
			t.plugin("some-hook", () => {});
		}).toThrow(/some-hook/);
		t.hooks.myHook.call();
	});

	it("should use custom mapping", () => {
		const t = new Tapable();
		t.hooks = {
			myHook: new SyncHook(),
			hookMap: new HookMap(name => new SyncHook())
		};
		let called = 0;
		t._pluginCompat.tap("hookMap custom mapping", options => {
			const match = /^hookMap (.+)$/.exec(options.name);
			if(match) {
				t.hooks.hookMap.tap(match[1], options.fn.name || "unnamed compat plugin", options.fn);
				return true;
			}
		})
		t.plugin("my-hook", () => called++);
		t.plugin("hookMap test", () => called += 10);
		t.hooks.myHook.call();
		expect(called).toEqual(1);
		t.hooks.hookMap.for("test").call();
		expect(called).toEqual(11);
		t.hooks.hookMap.for("other").call();
		expect(called).toEqual(11);
	});
})