svelte/test/runtime/samples/transition-js-if-else-block-not-dynamic-outro/_config.js

export default {
	async test({ assert, component, target, raf }) {
		const t = target.querySelector('#t');

		await (component.condition = false);

		let time = 0;
		raf.tick(time += 25);

		assert.htmlEqual(target.innerHTML, `
			<div id="t" foo="0.75">TRUE</div>
			<div id="f">FALSE</div>
		`);

		// toggling back in the middle of the out transition
		// will reuse the previous element
		await (component.condition = true);

		assert.htmlEqual(target.innerHTML, `
			<div id="f">FALSE</div>
			<div id="t" foo="1">TRUE</div>
		`);
		assert.equal(target.querySelector('#t'), t);

		raf.tick(time += 25);

		assert.htmlEqual(target.innerHTML, `
			<div id="f" foo="0.75">FALSE</div>
			<div id="t" foo="1">TRUE</div>
		`);

		raf.tick(time += 75);

		assert.htmlEqual(target.innerHTML, `
			<div id="t" foo="1">TRUE</div>
		`);
	}
};