test.ts — svelte Source File

Source Code

import { describe, assert, it } from 'vitest';
import { flushSync } from '../../src/index-client';
import * as $ from '../../src/internal/client/runtime';
import { push, pop } from '../../src/internal/client/context';
import {
	effect,
	effect_root,
	render_effect,
	user_effect,
	user_pre_effect
} from '../../src/internal/client/reactivity/effects';
import { state, set, update, update_pre } from '../../src/internal/client/reactivity/sources';
import type { Derived, Effect, Source, Value } from '../../src/internal/client/types';
import { proxy } from '../../src/internal/client/proxy';
import { derived } from '../../src/internal/client/reactivity/deriveds';
import { snapshot } from '../../src/internal/shared/clone.js';
import { SvelteSet } from '../../src/reactivity/set';
import { DESTROYED } from '../../src/internal/client/constants';
import { noop } from 'svelte/internal/client';
import { disable_async_mode_flag, enable_async_mode_flag } from '../../src/internal/flags';

/**
 * @param runes runes mode
 * @param fn A function that returns a function because we first need to set up all the signals
 * 			 and then execute the test in order to simulate a real component
 */
function run_test(runes: boolean, fn: (runes: boolean) => () => void) {
	return () => {
		// Create a component context to test runes vs legacy mode
		push({}, runes);
		// Create a render context so that effect validations etc don't fail
		let execute: any;
		const destroy = effect_root(() => {
			execute = fn(runes);
		});
		pop();
		execute();
		destroy();
	};
}

function test(text: string, fn: (runes: boolean) => any) {
	it(`${text} (legacy mode)`, run_test(false, fn));
	it(`${text} (runes mode)`, run_test(true, fn));
}

test.only = (text: string, fn: (runes: boolean) => any) => {
	it.only(`${text} (legacy mode)`, run_test(false, fn));
	it.only(`${text} (runes mode)`, run_test(true, fn));
};

test.skip = (text: string, fn: (runes: boolean) => any) => {
	it.skip(`${text} (legacy mode)`, run_test(false, fn));
	it.skip(`${text} (runes mode)`, run_test(true, fn));
};

describe('signals', () => {
	test('effect with state and derived in it', () => {
		const log: string[] = [];

// ... (1437 more lines)