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

describe('Thunk factory "is.inRange"', () => {
	it("recognizes numbers within given range (inclusively)", () => {
		const thunk = is.inRange([ 0, 100 ]);
		const inside = [ 42, 17, 0, 100 ];
		const outside = [ -42, -17, ...infs ];

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

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

	it("recognizes numbers within given range (exclusively)", () => {
		const thunk = is.inRange([ 0, 1 ], false);
		const inside = [ .5, ...Array.from({ length: 5 }, Math.random) ];
		const outside = [ 0, 1, ...infs ];

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

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

	it("recognizes numbers within given range (using complex inclusiveness pattern)", () => {
		const range = [ 1, 4 ];
		const lower = 1;
		const upper = 4;

		expect(is.inRange(range, [ true, true ])(lower)).to.be.true;
		expect(is.inRange(range, [ false, true ])(lower)).to.be.false;
		expect(is.inRange(range, [ true, true ])(upper)).to.be.true;
		expect(is.inRange(range, [ true, false ])(upper)).to.be.false;
	});
});