130 lines
4.5 KiB
TypeScript
130 lines
4.5 KiB
TypeScript
/**
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* @license
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* Copyright 2025 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
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import { renderHook, act } from '@testing-library/react';
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import {
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usePhraseCycler,
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WITTY_LOADING_PHRASES,
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PHRASE_CHANGE_INTERVAL_MS,
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} from './usePhraseCycler.js';
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describe('usePhraseCycler', () => {
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beforeEach(() => {
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vi.useFakeTimers();
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});
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afterEach(() => {
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vi.restoreAllMocks();
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});
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it('should initialize with the first witty phrase when not active and not waiting', () => {
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const { result } = renderHook(() => usePhraseCycler(false, false));
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expect(result.current).toBe(WITTY_LOADING_PHRASES[0]);
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});
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it('should show "Waiting for user confirmation..." when isWaiting is true', () => {
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const { result, rerender } = renderHook(
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({ isActive, isWaiting }) => usePhraseCycler(isActive, isWaiting),
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{ initialProps: { isActive: true, isWaiting: false } },
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);
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rerender({ isActive: true, isWaiting: true });
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expect(result.current).toBe('Waiting for user confirmation...');
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});
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it('should not cycle phrases if isActive is false and not waiting', () => {
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const { result } = renderHook(() => usePhraseCycler(false, false));
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act(() => {
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vi.advanceTimersByTime(PHRASE_CHANGE_INTERVAL_MS * 2);
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});
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expect(result.current).toBe(WITTY_LOADING_PHRASES[0]);
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});
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it('should cycle through witty phrases when isActive is true and not waiting', () => {
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const { result } = renderHook(() => usePhraseCycler(true, false));
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// Initial phrase should be one of the witty phrases
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expect(WITTY_LOADING_PHRASES).toContain(result.current);
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const _initialPhrase = result.current;
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act(() => {
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vi.advanceTimersByTime(PHRASE_CHANGE_INTERVAL_MS);
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});
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// Phrase should change and be one of the witty phrases
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expect(WITTY_LOADING_PHRASES).toContain(result.current);
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const _secondPhrase = result.current;
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act(() => {
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vi.advanceTimersByTime(PHRASE_CHANGE_INTERVAL_MS);
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});
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expect(WITTY_LOADING_PHRASES).toContain(result.current);
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});
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it('should reset to a witty phrase when isActive becomes true after being false (and not waiting)', () => {
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const { result, rerender } = renderHook(
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({ isActive, isWaiting }) => usePhraseCycler(isActive, isWaiting),
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{ initialProps: { isActive: false, isWaiting: false } },
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);
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// Activate
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rerender({ isActive: true, isWaiting: false });
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const firstActivePhrase = result.current;
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expect(WITTY_LOADING_PHRASES).toContain(firstActivePhrase);
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act(() => {
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vi.advanceTimersByTime(PHRASE_CHANGE_INTERVAL_MS);
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});
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// Phrase should change if enough phrases and interval passed
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if (WITTY_LOADING_PHRASES.length > 1) {
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expect(result.current).not.toBe(firstActivePhrase);
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}
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expect(WITTY_LOADING_PHRASES).toContain(result.current);
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// Set to inactive - should reset to the default initial phrase
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rerender({ isActive: false, isWaiting: false });
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expect(result.current).toBe(WITTY_LOADING_PHRASES[0]);
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// Set back to active - should pick a random witty phrase
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act(() => {
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rerender({ isActive: true, isWaiting: false });
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});
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expect(WITTY_LOADING_PHRASES).toContain(result.current);
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});
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it('should clear phrase interval on unmount when active', () => {
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const { unmount } = renderHook(() => usePhraseCycler(true, false));
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const clearIntervalSpy = vi.spyOn(global, 'clearInterval');
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unmount();
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expect(clearIntervalSpy).toHaveBeenCalledOnce();
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});
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it('should reset to a witty phrase when transitioning from waiting to active', () => {
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const { result, rerender } = renderHook(
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({ isActive, isWaiting }) => usePhraseCycler(isActive, isWaiting),
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{ initialProps: { isActive: true, isWaiting: false } },
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);
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const _initialPhrase = result.current;
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expect(WITTY_LOADING_PHRASES).toContain(_initialPhrase);
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// Cycle to a different phrase (potentially)
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act(() => {
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vi.advanceTimersByTime(PHRASE_CHANGE_INTERVAL_MS);
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});
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if (WITTY_LOADING_PHRASES.length > 1) {
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// This check is probabilistic with random selection
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}
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expect(WITTY_LOADING_PHRASES).toContain(result.current);
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// Go to waiting state
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rerender({ isActive: false, isWaiting: true });
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expect(result.current).toBe('Waiting for user confirmation...');
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// Go back to active cycling - should pick a random witty phrase
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rerender({ isActive: true, isWaiting: false });
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expect(WITTY_LOADING_PHRASES).toContain(result.current);
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});
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});
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