import "mocha";
import { expect } from "chai";
import { TypeOf } from "@valuer/types";
import { is, numbers, negpos } from "../helpers";

describe('Thunk factory "is.a"', () => {
	it("recognizes values by kind-agnostic type-like parameter", () => {
		for (const value of [ "text", new String("text") ])
			for (const type of [ (<TypeOf> "string"), String ])
				expect(is.a(type)(value)).to.be.true;

		for (const value of negpos(numbers))
			for (const type of [ (<TypeOf> "number"), Number ])
				expect(is.a(type)(value)).to.be.true;

		const Thing = class {};
		const Thingy = class {};
		const thing = new Thing();

		const thunk = is.a(Thing);

		expect(thunk(thing)).to.be.true;
		expect(thunk({})).to.be.false;
		expect(is.a(Thingy)(thing)).to.be.false;
	});
});