unit.test.ts
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unit.test.ts
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	import { guessResolutions } from "./guessResolutions";
	import assert from "assert";

	describe("resolutions guessing", function () {
	it("handles a simple vw case", function () {
	assert.deepStrictEqual(guessResolutions("100vw"), [
	320,
	640,
	1280,
	1920,
	2560,
	3840,
	]);
	});

	it("handles vw case with min-width conditions", function () {
	assert.deepStrictEqual(
	guessResolutions(
	`(min-width: 600px) 80vw,
	(min-width: 400px) 90vw,
	100vw`
	),
	[
	320,
	360,
	399,
	480,
	539,
	640,
	720,
	798,
	960,
	1078,
	1280,
	1536,
	2560,
	3072,
	]
	);
	});

	it("handles vw/px case with min-width conditions + px default", function () {
	assert.deepStrictEqual(
	guessResolutions(
	`(min-width: 1000px) 50vw,
	(min-width: 800px) 800px,
	600px`
	),
	[500, 600, 800, 960, 1000, 1200, 1600, 1920]
	);
	});

	it("handles complex vw case with max-width conditions + px default", function () {
	assert.deepStrictEqual(
	guessResolutions(
	`
	(max-width: 600px) 100vw,
	(max-width: 1200px) 80vw,
	(max-width: 2000px) 50vw,
	900px`
	),
	[
	320,
	480,
	599,
	600,
	640,
	900,
	959,
	960,
	999,
	1198,
	1200,
	1280,
	1800,
	1918,
	1998,
	]
	);
	});

	it("handles max-width condition with vw value and vw default", function () {
	assert.deepStrictEqual(
	guessResolutions(
	`(max-width: 400px) 100vw,
	50vw`
	),
	[320, 399, 400, 640, 798, 960, 1280, 1920]
	);
	});

	it("handles vw case with defined min/max resolutions", function () {
	assert.deepStrictEqual(
	guessResolutions(`100vw`, {
	min_viewport_size: 144,
	max_viewport_size: 1600,
	}),
	[144, 288, 576, 1152, 1600, 2304, 3200]
	);
	});
	});