PliWould/components/__tests__/AreaInput-test.tsx

import { render, fireEvent, screen } from '@testing-library/react-native';
import { AreaInput } from '../AreaInput';

describe('AreaInput', () => {
  it('renders correctly', () => {
    render(<AreaInput lengthLabel='length' widthLabel='width' />);
    const lengthInput = screen.getByLabelText('length');
    const widthInput = screen.getByLabelText('width');
    expect(lengthInput).toBeTruthy();
    expect(widthInput).toBeTruthy();
  });

  it('calls onValueSet when a value is entered', () => {
    const onMeasurementSetMock = jest.fn();
    render(<AreaInput onMeasurementSet={onMeasurementSetMock} lengthLabel='length' widthLabel='width' defaultValue={{l: 4, w:4, u: "inch"}}/>);
    const lengthInput = screen.getByLabelText('length');
    const widthInput = screen.getByLabelText('width');
    fireEvent.changeText(lengthInput, '10');
    expect(onMeasurementSetMock).toHaveBeenCalledWith({
      l: 10,
      w: 4,
      u: "inch"
    });
    fireEvent.changeText(widthInput, '10');
    expect(onMeasurementSetMock).toHaveBeenCalledWith({
      l: 10,
      w: 10,
      u: "inch"
    });
  });
});