memoizerific/tests/complex-args.js

Fast, small, efficient JavaScript memoization lib to memoize JS functions

var Memoizerific = require('../src/memoizerific');

describe("complex args", () => {
	var memoizedFn,
		arg1 = { a: { b: 3 }, num: 3 },
		arg2 = { c: { d: 3 }, num: 7 },
		arg3 = [{ f: { g: 3 }, num: 11 }, { h: { i: 3 }, num: 4 }, { j: { k: 3 }, num: 6 }];

	beforeEach(function() {
		memoizedFn = Memoizerific(50)(function(arg1, arg2, arg3) {
			return arg1.num * arg2.num;
		});
		memoizedFn(arg1, arg2, arg3);
	});

	it("should be map or similar", () => {
		console.log(process.env.FORCE_SIMILAR_INSTEAD_OF_MAP === 'true' ? 'SIMILAR() to MAP()' : 'MAP()');
		expect(memoizedFn.cache instanceof Map).toEqual(process.env.FORCE_SIMILAR_INSTEAD_OF_MAP !== 'true');
	});

	it("should not be memoized", () => {
		memoizedFn = Memoizerific(50)(function(arg1) {
			return arg1;
		});

		memoizedFn(arg1);
		expect(memoizedFn.wasMemoized).toEqual(false);

		var a1 = { a: 1};

		memoizedFn(a1);
		expect(memoizedFn.wasMemoized).toEqual(false);

		memoizedFn(a1);
		expect(memoizedFn.wasMemoized).toEqual(true);

		memoizedFn({ a: 1});
		expect(memoizedFn.wasMemoized).toEqual(false);

		memoizedFn({ a: 1});
		expect(memoizedFn.wasMemoized).toEqual(false);

		memoizedFn({ a: 1});
		expect(memoizedFn.wasMemoized).toEqual(false);

		memoizedFn(a1);
		expect(memoizedFn.wasMemoized).toEqual(true);

		expect(memoizedFn.lru.length).toEqual(5);
	});

	it("should be memoized", () => {
		memoizedFn(arg1, arg2, arg3);
		expect(memoizedFn.wasMemoized).toEqual(true);
		expect(memoizedFn.lru.length).toEqual(1);
	});

	it("should have multiple cached items", () => {
		memoizedFn(arg1, arg2, arg3);
		memoizedFn(arg1, arg2, 1);
		expect(memoizedFn.wasMemoized).toEqual(false);
		expect(memoizedFn.lru.length).toEqual(2);
	});
});