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

describe('Thunk factory "is.lengthRange"', () => {
	it("recognizes length range", () => {
		const valid = [ [17,42], [42,17], [42,Infinity] ];
		const invalid = [ [17,.42], [42,-17], [42,NaN] ];
		const thunk = is.lengthRange();

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

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