@yoroi/common/lib/module/translators/reactjs/hooks/useObservableValue.test.js

The Common package of Yoroi SDK

import { act, renderHook } from '@testing-library/react-hooks';
import { Subject } from 'rxjs';
import { useObservableValue } from './useObservableValue';
describe('useObservableValue', () => {
  it('should update the data when the observable emits a value', async () => {
    const observable$ = new Subject();
    const getter = jest.fn();
    getter.mockReturnValueOnce('Initial Data');
    getter.mockReturnValue('Updated Data');
    const {
      result
    } = renderHook(() => useObservableValue({
      observable$,
      getter
    }));
    expect(result.current).toBe('Initial Data');
    act(() => {
      observable$.next();
    });
    expect(result.current).toBe('Updated Data');
  });
});
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