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default.test() — svelte Function Reference

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

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Dependency Diagram

graph TD
  9aecfd84_ad15_8897_6d0f_d4362f64c708["default.test()"]
  6e65a2b2_2a10_aa5b_51e0_913bb69346b8["_config.js"]
  9aecfd84_ad15_8897_6d0f_d4362f64c708 -->|defined in| 6e65a2b2_2a10_aa5b_51e0_913bb69346b8
  style 9aecfd84_ad15_8897_6d0f_d4362f64c708 fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

packages/svelte/tests/runtime-legacy/samples/spread-element-input-select-multiple/_config.js lines 5–44

	test({ assert, component, target, window }) {
		const [input1, input2] = target.querySelectorAll('input');
		const select = target.querySelector('select');
		ok(select);
		const [option1, option2] = /** @type {NodeListOf<HTMLOptionElement>} */ (select.childNodes);

		let selections = Array.from(select.selectedOptions);
		assert.equal(selections.length, 2);
		assert.ok(selections.includes(option1));
		assert.ok(selections.includes(option2));

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

		input1.checked = false;
		input1.dispatchEvent(event);
		flushSync();

		selections = Array.from(select.selectedOptions);
		assert.equal(selections.length, 1);
		assert.ok(!selections.includes(option1));
		assert.ok(selections.includes(option2));

		input2.checked = false;
		input2.dispatchEvent(event);
		flushSync();
		input1.checked = true;
		input1.dispatchEvent(event);
		flushSync();
		selections = Array.from(select.selectedOptions);
		assert.equal(selections.length, 1);
		assert.ok(selections.includes(option1));
		assert.ok(!selections.includes(option2));

		component.spread = { value: ['Hello', 'World'] };

		selections = Array.from(select.selectedOptions);
		assert.equal(selections.length, 2);
		assert.ok(selections.includes(option1));
		assert.ok(selections.includes(option2));
	}

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Frequently Asked Questions

What does default.test() do?
default.test() is a function in the svelte codebase, defined in packages/svelte/tests/runtime-legacy/samples/spread-element-input-select-multiple/_config.js.
Where is default.test() defined?
default.test() is defined in packages/svelte/tests/runtime-legacy/samples/spread-element-input-select-multiple/_config.js at line 5.

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