default.test() — svelte Function Reference

Architecture documentation for the default.test() function in _config.js from the svelte codebase.

Function javascript BuildSystem MessageProcessor

Entity Profile

BuildSystem→ MessageProcessor→ default.test() — svelte Function Reference

Dependency Diagram

graph TD
  0ee77e13_25be_4829_a68a_8143c6bd8ad1["default.test()"]
  9eee2e7b_d837_691d_23b6_70457d67ff99["_config.js"]
  0ee77e13_25be_4829_a68a_8143c6bd8ad1 -->|defined in| 9eee2e7b_d837_691d_23b6_70457d67ff99
  style 0ee77e13_25be_4829_a68a_8143c6bd8ad1 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/svelte/tests/runtime-runes/samples/await-pending-wait/_config.js lines 5–67

	async test({ assert, target }) {
		const [b1, b2, b3] = target.querySelectorAll('button');

		// not flushing means we wait a tick before showing the pending state ...
		b2.click();
		await Promise.resolve();
		assert.htmlEqual(
			target.innerHTML,
			`<button>Clear</button> <button>Immediate</button> <button>Takes time</button>`
		);

		// ... and show the then state directly if the promise resolved by then
		await Promise.resolve();
		assert.htmlEqual(
			target.innerHTML,
			`<button>Clear</button> <button>Immediate</button> <button>Takes time</button> then`
		);

		// reset
		b1.click();
		flushSync();
		assert.htmlEqual(
			target.innerHTML,
			`<button>Clear</button> <button>Immediate</button> <button>Takes time</button>`
		);

		// flushing means we show the pending state immediately
		b2.click();
		flushSync();
		assert.htmlEqual(
			target.innerHTML,
			`<button>Clear</button> <button>Immediate</button> <button>Takes time</button> pending`
		);

		await Promise.resolve();
		b1.click();
		flushSync();
		assert.htmlEqual(
			target.innerHTML,
			`<button>Clear</button> <button>Immediate</button> <button>Takes time</button>`
		);

		// when not flushing ...
		b3.click();
		await Promise.resolve();
		assert.htmlEqual(
			target.innerHTML,
			`<button>Clear</button> <button>Immediate</button> <button>Takes time</button>`
		);

		// ... we show the pending state after a tick when the promise hasn't resolved by then
		await Promise.resolve();
		assert.htmlEqual(
			target.innerHTML,
			`<button>Clear</button> <button>Immediate</button> <button>Takes time</button> pending`
		);

		await new Promise((r) => setTimeout(r, 110));
		assert.htmlEqual(
			target.innerHTML,
			`<button>Clear</button> <button>Immediate</button> <button>Takes time</button> then`
		);
	}