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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { act, renderHook } from '@testing-library/react';
import { useInputHistory } from './useInputHistory.js';
describe('useInputHistory', () => {
const mockOnSubmit = vi.fn();
const mockOnChange = vi.fn();
beforeEach(() => {
vi.clearAllMocks();
});
const userMessages = ['message 1', 'message 2', 'message 3'];
it('should initialize with historyIndex -1 and empty originalQueryBeforeNav', () => {
const { result } = renderHook(() =>
useInputHistory({
userMessages: [],
onSubmit: mockOnSubmit,
isActive: true,
currentQuery: '',
onChange: mockOnChange,
}),
);
// Internal state is not directly testable, but we can infer from behavior.
// Attempting to navigate down should do nothing if historyIndex is -1.
act(() => {
result.current.navigateDown();
});
expect(mockOnChange).not.toHaveBeenCalled();
});
describe('handleSubmit', () => {
it('should call onSubmit with trimmed value and reset history', () => {
const { result } = renderHook(() =>
useInputHistory({
userMessages,
onSubmit: mockOnSubmit,
isActive: true,
currentQuery: ' test query ',
onChange: mockOnChange,
}),
);
act(() => {
result.current.handleSubmit(' submit value ');
});
expect(mockOnSubmit).toHaveBeenCalledWith('submit value');
// Check if history is reset (e.g., by trying to navigate down)
act(() => {
result.current.navigateDown();
});
expect(mockOnChange).not.toHaveBeenCalled();
});
it('should not call onSubmit if value is empty after trimming', () => {
const { result } = renderHook(() =>
useInputHistory({
userMessages,
onSubmit: mockOnSubmit,
isActive: true,
currentQuery: '',
onChange: mockOnChange,
}),
);
act(() => {
result.current.handleSubmit(' ');
});
expect(mockOnSubmit).not.toHaveBeenCalled();
});
});
describe('navigateUp', () => {
it('should not navigate if isActive is false', () => {
const { result } = renderHook(() =>
useInputHistory({
userMessages,
onSubmit: mockOnSubmit,
isActive: false,
currentQuery: 'current',
onChange: mockOnChange,
}),
);
act(() => {
const navigated = result.current.navigateUp();
expect(navigated).toBe(false);
});
expect(mockOnChange).not.toHaveBeenCalled();
});
it('should not navigate if userMessages is empty', () => {
const { result } = renderHook(() =>
useInputHistory({
userMessages: [],
onSubmit: mockOnSubmit,
isActive: true,
currentQuery: 'current',
onChange: mockOnChange,
}),
);
act(() => {
const navigated = result.current.navigateUp();
expect(navigated).toBe(false);
});
expect(mockOnChange).not.toHaveBeenCalled();
});
it('should call onChange with the last message when navigating up from initial state', () => {
const currentQuery = 'current query';
const { result } = renderHook(() =>
useInputHistory({
userMessages,
onSubmit: mockOnSubmit,
isActive: true,
currentQuery,
onChange: mockOnChange,
}),
);
act(() => {
result.current.navigateUp();
});
expect(mockOnChange).toHaveBeenCalledWith(userMessages[2]); // Last message
});
it('should store currentQuery as originalQueryBeforeNav on first navigateUp', () => {
const currentQuery = 'original user input';
const { result } = renderHook(() =>
useInputHistory({
userMessages,
onSubmit: mockOnSubmit,
isActive: true,
currentQuery,
onChange: mockOnChange,
}),
);
act(() => {
result.current.navigateUp(); // historyIndex becomes 0
});
expect(mockOnChange).toHaveBeenCalledWith(userMessages[2]);
// Navigate down to restore original query
act(() => {
result.current.navigateDown(); // historyIndex becomes -1
});
expect(mockOnChange).toHaveBeenCalledWith(currentQuery);
});
it('should navigate through history messages on subsequent navigateUp calls', () => {
const { result } = renderHook(() =>
useInputHistory({
userMessages,
onSubmit: mockOnSubmit,
isActive: true,
currentQuery: '',
onChange: mockOnChange,
}),
);
act(() => {
result.current.navigateUp(); // Navigates to 'message 3'
});
expect(mockOnChange).toHaveBeenCalledWith(userMessages[2]);
act(() => {
result.current.navigateUp(); // Navigates to 'message 2'
});
expect(mockOnChange).toHaveBeenCalledWith(userMessages[1]);
act(() => {
result.current.navigateUp(); // Navigates to 'message 1'
});
expect(mockOnChange).toHaveBeenCalledWith(userMessages[0]);
});
});
describe('navigateDown', () => {
it('should not navigate if isActive is false', () => {
const initialProps = {
userMessages,
onSubmit: mockOnSubmit,
isActive: true, // Start active to allow setup navigation
currentQuery: 'current',
onChange: mockOnChange,
};
const { result, rerender } = renderHook(
(props) => useInputHistory(props),
{
initialProps,
},
);
// First navigate up to have something in history
act(() => {
result.current.navigateUp();
});
mockOnChange.mockClear(); // Clear calls from setup
// Set isActive to false for the actual test
rerender({ ...initialProps, isActive: false });
act(() => {
const navigated = result.current.navigateDown();
expect(navigated).toBe(false);
});
expect(mockOnChange).not.toHaveBeenCalled();
});
it('should not navigate if historyIndex is -1 (not in history navigation)', () => {
const { result } = renderHook(() =>
useInputHistory({
userMessages,
onSubmit: mockOnSubmit,
isActive: true,
currentQuery: 'current',
onChange: mockOnChange,
}),
);
act(() => {
const navigated = result.current.navigateDown();
expect(navigated).toBe(false);
});
expect(mockOnChange).not.toHaveBeenCalled();
});
it('should restore originalQueryBeforeNav when navigating down to initial state', () => {
const originalQuery = 'my original input';
const { result } = renderHook(() =>
useInputHistory({
userMessages,
onSubmit: mockOnSubmit,
isActive: true,
currentQuery: originalQuery,
onChange: mockOnChange,
}),
);
act(() => {
result.current.navigateUp(); // Navigates to 'message 3', stores 'originalQuery'
});
expect(mockOnChange).toHaveBeenCalledWith(userMessages[2]);
mockOnChange.mockClear();
act(() => {
result.current.navigateDown(); // Navigates back to original query
});
expect(mockOnChange).toHaveBeenCalledWith(originalQuery);
});
});
});
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