default.test() — svelte Function Reference

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

Function javascript BuildSystem MessageProcessor

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

Dependency Diagram

graph TD
  833d590f_c760_419b_98b4_5ccc37df6621["default.test()"]
  a1f3def5_5f5b_8736_17f8_0d5184ba376f["_config.js"]
  833d590f_c760_419b_98b4_5ccc37df6621 -->|defined in| a1f3def5_5f5b_8736_17f8_0d5184ba376f
  style 833d590f_c760_419b_98b4_5ccc37df6621 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/svelte/tests/runtime-legacy/samples/binding-select-multiple/_config.js lines 19–80

	test({ assert, component, target, window }) {
		const select = target.querySelector('select');
		ok(select);
		const options = [...target.querySelectorAll('option')];

		const change = new window.Event('change');

		options[1].selected = false;
		select.dispatchEvent(change);
		flushSync();

		assert.deepEqual(component.selected, ['three']);
		assert.htmlEqual(
			target.innerHTML,
			`
			<select multiple>
				<option>one</option>
				<option>two</option>
				<option>three</option>
			</select>

			<p>selected: three</p>
		`
		);

		options[0].selected = true;
		select.dispatchEvent(change);
		flushSync();

		assert.deepEqual(component.selected, ['one', 'three']);
		assert.htmlEqual(
			target.innerHTML,
			`
			<select multiple>
				<option>one</option>
				<option>two</option>
				<option>three</option>
			</select>

			<p>selected: one, three</p>
		`
		);

		component.selected = ['one', 'two'];

		assert.ok(options[0].selected);
		assert.ok(options[1].selected);
		assert.ok(!options[2].selected);

		assert.htmlEqual(
			target.innerHTML,
			`
			<select multiple>
				<option>one</option>
				<option>two</option>
				<option>three</option>
			</select>

			<p>selected: one, two</p>
		`
		);
	}