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import { describe, expect, it } from '@jest/globals';
import { act, renderHook } from '@testing-library/react';
import type { FC, ReactNode } from 'react';
import { ThemeProvider, type ThemeProviderProps } from '../../providers';
import { useTheme } from './use-theme';
const createWrapper = (
Wrapper: FC<ThemeProviderProps>,
config: ThemeProviderProps
) =>
function CreatedWrapper({ children }: { children: ReactNode }) {
return <Wrapper {...config}>{children}</Wrapper>;
};
describe('useTheme', () => {
it('should return the default value without provider and prevent update', () => {
const defaultTheme = 'system';
const { result } = renderHook(() => useTheme());
expect(result.current.theme).toBe(defaultTheme);
act(() => result.current.setTheme('dark'));
expect(result.current.theme).toBe(defaultTheme);
});
it('can update the value', () => {
const defaultTheme = 'dark';
const { result } = renderHook(() => useTheme(), {
wrapper: createWrapper(ThemeProvider, {
attribute: 'magnam',
defaultTheme,
storageKey: 'repellat',
}),
});
expect(result.current.theme).toBe(defaultTheme);
const newTheme = 'light';
act(() => result.current.setTheme(newTheme));
expect(result.current.theme).toBe(newTheme);
});
it('can toggle the theme from dark to light', () => {
const defaultTheme = 'dark';
const { result } = renderHook(() => useTheme(), {
wrapper: createWrapper(ThemeProvider, {
attribute: 'voluptatibus',
defaultTheme,
storageKey: 'qui',
}),
});
expect(result.current.theme).toBe(defaultTheme);
act(() => result.current.toggleTheme());
expect(result.current.theme).toBe('light');
});
it('can toggle the theme from light to dark', () => {
const defaultTheme = 'light';
const { result } = renderHook(() => useTheme(), {
wrapper: createWrapper(ThemeProvider, {
attribute: 'sed',
defaultTheme,
storageKey: 'ut',
}),
});
expect(result.current.theme).toBe(defaultTheme);
act(() => result.current.toggleTheme());
expect(result.current.theme).toBe('dark');
});
});
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