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import { expect, test } from 'bun:test';
import { debounce } from '../src/lib/search/debounce';
test('debounce delays function execution', async () => {
const results: number[] = [];
const debouncedFn = debounce((value: number) => results.push(value), 100);
debouncedFn(1);
debouncedFn(2);
debouncedFn(3);
expect(results.length).toBe(0);
await Bun.sleep(150);
expect(results.length).toBe(1);
expect(results[0]).toBe(3);
});
test('debounce resets timer on repeated calls', async () => {
const results: number[] = [];
const debouncedFn = debounce((value: number) => results.push(value), 100);
debouncedFn(1);
await Bun.sleep(50);
debouncedFn(2);
await Bun.sleep(50);
debouncedFn(3);
await Bun.sleep(50);
expect(results.length).toBe(0);
await Bun.sleep(150);
expect(results.length).toBe(1);
expect(results[0]).toBe(3);
});
test('debounce allows multiple executions over time', async () => {
const results: number[] = [];
const debouncedFn = debounce((value: number) => results.push(value), 50);
debouncedFn(1);
await Bun.sleep(100);
debouncedFn(2);
await Bun.sleep(100);
expect(results.length).toBe(2);
expect(results).toEqual([1, 2]);
});
test('debounce passes arguments correctly', async () => {
const results: [string, number][] = [];
const debouncedFn = debounce((text: string, num: number) => results.push([text, num]), 50);
debouncedFn('hello', 42);
await Bun.sleep(100);
expect(results.length).toBe(1);
expect(results[0]).toEqual(['hello', 42]);
});
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