import "mocha";
import { expect } from "chai";
import { is, ints, negpos, floats, evens, odds } from "../helpers";

describe('Thunk factory "is.integer"', () => {
	it("recognizes integers", () => {
		const thunk = is.integer();

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

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

	it("accepts parity requirement parameter", () => {
		const isEven = is.integer("even");
		const isOdd = is.integer("odd");

		for (const value of negpos(evens))
			expect(isEven(value)).to.be.true,
			expect(isOdd(value)).to.be.false;

		for (const value of negpos(odds))
			expect(isOdd(value)).to.be.true,
			expect(isEven(value)).to.be.false;
	});
});