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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { act, renderHook } from '@testing-library/react';
import { useConsoleMessages } from './useConsoleMessages.js';
import { ConsoleMessageItem } from '../types.js';
// Mock setTimeout and clearTimeout
vi.useFakeTimers();
describe('useConsoleMessages', () => {
it('should initialize with an empty array of console messages', () => {
const { result } = renderHook(() => useConsoleMessages());
expect(result.current.consoleMessages).toEqual([]);
});
it('should add a new message', () => {
const { result } = renderHook(() => useConsoleMessages());
const message: ConsoleMessageItem = {
type: 'log',
content: 'Test message',
count: 1,
};
act(() => {
result.current.handleNewMessage(message);
});
act(() => {
vi.runAllTimers(); // Process the queue
});
expect(result.current.consoleMessages).toEqual([{ ...message, count: 1 }]);
});
it('should consolidate identical consecutive messages', () => {
const { result } = renderHook(() => useConsoleMessages());
const message: ConsoleMessageItem = {
type: 'log',
content: 'Test message',
count: 1,
};
act(() => {
result.current.handleNewMessage(message);
result.current.handleNewMessage(message);
});
act(() => {
vi.runAllTimers();
});
expect(result.current.consoleMessages).toEqual([{ ...message, count: 2 }]);
});
it('should not consolidate different messages', () => {
const { result } = renderHook(() => useConsoleMessages());
const message1: ConsoleMessageItem = {
type: 'log',
content: 'Test message 1',
count: 1,
};
const message2: ConsoleMessageItem = {
type: 'error',
content: 'Test message 2',
count: 1,
};
act(() => {
result.current.handleNewMessage(message1);
result.current.handleNewMessage(message2);
});
act(() => {
vi.runAllTimers();
});
expect(result.current.consoleMessages).toEqual([
{ ...message1, count: 1 },
{ ...message2, count: 1 },
]);
});
it('should not consolidate messages if type is different', () => {
const { result } = renderHook(() => useConsoleMessages());
const message1: ConsoleMessageItem = {
type: 'log',
content: 'Test message',
count: 1,
};
const message2: ConsoleMessageItem = {
type: 'error',
content: 'Test message',
count: 1,
};
act(() => {
result.current.handleNewMessage(message1);
result.current.handleNewMessage(message2);
});
act(() => {
vi.runAllTimers();
});
expect(result.current.consoleMessages).toEqual([
{ ...message1, count: 1 },
{ ...message2, count: 1 },
]);
});
it('should clear console messages', () => {
const { result } = renderHook(() => useConsoleMessages());
const message: ConsoleMessageItem = {
type: 'log',
content: 'Test message',
count: 1,
};
act(() => {
result.current.handleNewMessage(message);
});
act(() => {
vi.runAllTimers();
});
expect(result.current.consoleMessages).toHaveLength(1);
act(() => {
result.current.clearConsoleMessages();
});
expect(result.current.consoleMessages).toEqual([]);
});
it('should clear pending timeout on clearConsoleMessages', () => {
const { result } = renderHook(() => useConsoleMessages());
const message: ConsoleMessageItem = {
type: 'log',
content: 'Test message',
count: 1,
};
act(() => {
result.current.handleNewMessage(message); // This schedules a timeout
});
act(() => {
result.current.clearConsoleMessages();
});
// Ensure the queue is empty and no more messages are processed
act(() => {
vi.runAllTimers(); // If timeout wasn't cleared, this would process the queue
});
expect(result.current.consoleMessages).toEqual([]);
});
it('should clear message queue on clearConsoleMessages', () => {
const { result } = renderHook(() => useConsoleMessages());
const message: ConsoleMessageItem = {
type: 'log',
content: 'Test message',
count: 1,
};
act(() => {
// Add a message but don't process the queue yet
result.current.handleNewMessage(message);
});
act(() => {
result.current.clearConsoleMessages();
});
// Process any pending timeouts (should be none related to message queue)
act(() => {
vi.runAllTimers();
});
// The consoleMessages should be empty because the queue was cleared before processing
expect(result.current.consoleMessages).toEqual([]);
});
it('should cleanup timeout on unmount', () => {
const { result, unmount } = renderHook(() => useConsoleMessages());
const message: ConsoleMessageItem = {
type: 'log',
content: 'Test message',
count: 1,
};
act(() => {
result.current.handleNewMessage(message);
});
unmount();
// This is a bit indirect. We check that clearTimeout was called.
// If clearTimeout was not called, and we run timers, an error might occur
// or the state might change, which it shouldn't after unmount.
// Vitest's vi.clearAllTimers() or specific checks for clearTimeout calls
// would be more direct if available and easy to set up here.
// For now, we rely on the useEffect cleanup pattern.
expect(vi.getTimerCount()).toBe(0); // Check if all timers are cleared
});
});
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