import "mocha";
import { expect } from "chai";
import { is, funcs } from "../helpers";

describe('Thunk factory "is.ofType"', () => {
	it("recognizes values by their `typeof` result", () => {
		const values = [ 42, "text", true, Symbol.iterator, {}, () => {}, undefined ];

		for (const value of values)
			expect(is.ofType(typeof value)(value)).to.be.true;

		expect(is.ofType("string")(42)).to.be.false;
		expect(is.ofType("number")("")).to.be.false;
	});

	it("accepts any number of type-like arguments", () => {
		const thunk = is.ofType("string", "number");
		const valid = [ 42, "text" ];
		const invalid = funcs;

		for (const value of valid)
			expect(thunk(value)).to.be.true;

		for (const value of invalid)
			expect(thunk(value)).to.be.false;
	});
});