svelte/packages/svelte/tests/runtime-browser/samples/svelte-component-css-custom-properties/_config.js

import { assert_ok, test } from '../../assert';

export default test({
	props: {
		componentName: /** @type {string | undefined} */ ('Slider1')
	},
	html: `
		<div style="display: contents; --rail-color: rgb(0, 0, 0); --track-color: rgb(255, 0, 0);">
			<div id="component1">
				<p class="svelte-17ay6rc">Slider1</p>
				<span class="svelte-17ay6rc">Track</span>
			</div>
		</div>
		<div style="display: contents; --rail-color: rgb(0, 255, 0); --track-color: rgb(0, 0, 255);">
			<div id="component2">
				<p class="svelte-17ay6rc">Slider1</p>
				<span class="svelte-17ay6rc">Track</span>
			</div>
		</div>
	`,
	test({ target, window, assert, component }) {
		function assert_slider_1() {
			const rail_color1 = target.querySelector('#component1 p');
			const track_color1 = target.querySelector('#component1 span');
			const rail_color2 = target.querySelector('#component2 p');
			const track_color2 = target.querySelector('#component2 span');

			assert_ok(rail_color1);
			assert_ok(track_color1);
			assert_ok(rail_color2);
			assert_ok(track_color2);

			assert.equal(window.getComputedStyle(rail_color1).color, 'rgb(0, 0, 0)');
			assert.equal(window.getComputedStyle(track_color1).color, 'rgb(255, 0, 0)');
			assert.equal(window.getComputedStyle(rail_color2).color, 'rgb(0, 255, 0)');
			assert.equal(window.getComputedStyle(track_color2).color, 'rgb(0, 0, 255)');
			assert.equal(rail_color1.textContent, 'Slider1');
			assert.equal(rail_color2.textContent, 'Slider1');
		}

		function assert_slider_2() {
			const rail_color1 = target.querySelector('#component1 p');
			const track_color1 = target.querySelector('#component1 span');
			const rail_color2 = target.querySelector('#component2 p');
			const track_color2 = target.querySelector('#component2 span');

			assert_ok(rail_color1);
			assert_ok(track_color1);
			assert_ok(rail_color2);
			assert_ok(track_color2);

			assert.equal(window.getComputedStyle(rail_color1).color, 'rgb(0, 0, 0)');
			assert.equal(window.getComputedStyle(track_color1).color, 'rgb(255, 0, 0)');
			assert.equal(window.getComputedStyle(rail_color2).color, 'rgb(0, 255, 0)');
			assert.equal(window.getComputedStyle(track_color2).color, 'rgb(0, 0, 255)');
			assert.equal(rail_color1.textContent, 'Slider2');
			assert.equal(rail_color2.textContent, 'Slider2');
		}

		assert_slider_1();
		component.componentName = 'Slider2';
		assert_slider_2();
		component.componentName = undefined;
		assert.equal(window.document.querySelector('div')?.firstElementChild, null);
		component.componentName = 'Slider1';
		assert_slider_1();
	}
});