'use strict';

const { mod, Range, Core } = require('./core.js');

test('ranges overlap correctly', () => {
	const a = new Range(7, 1, 8);
	const b = new Range(0, 2, 8);
	const c = new Range(3, 5, 8);

	expect(a.overlaps(a)).toBe(true);
	expect(b.overlaps(b)).toBe(true);
	expect(c.overlaps(c)).toBe(true);

	expect(a.overlaps(b)).toBe(true);
	expect(b.overlaps(a)).toBe(true);
	expect(a.overlaps(c)).toBe(false);
	expect(b.overlaps(c)).toBe(false);
	expect(c.overlaps(a)).toBe(false);
	expect(c.overlaps(b)).toBe(false);
});

test('get non-overlapping ranges in a core', () => {
	const CORESIZE = 8000;
	const core = new Core(CORESIZE);

	for (let loop=0; loop<500; loop++) {
		const ranges = core.getRanges([20, 10, 5, 5]);
	
		expect(ranges.length).toBe(4);
		expect(mod(ranges[0].end - ranges[0].start + 1, CORESIZE)).toBe(20);
		expect(mod(ranges[1].end - ranges[1].start + 1, CORESIZE)).toBe(10);
		expect(mod(ranges[2].end - ranges[2].start + 1, CORESIZE)).toBe(5);
		expect(mod(ranges[3].end - ranges[3].start + 1, CORESIZE)).toBe(5);
	
		for (let i=0; i<ranges.length; i++) {
			for (let j=0; j<ranges.length; j++) {
				if (i === j) continue;
				expect(ranges[i].overlaps(ranges[j])).toBe(false);
			}
		}
	}
});