text: import React from 'react';
  import ReactDOM from 'react-dom';
  import App from './App';
  import { zeroFill } from '../src/services/MathUtils'
  
  it('renders without crashing', () => {
    const div = document.createElement('div');
    ReactDOM.render(<App />, div);
    ReactDOM.unmountComponentAtNode(div);
  });
  
  it('MathUtils.zeroFill converts properly', () => {
    let result = zeroFill("0.1", 2)
    expect(result).toBe("010");
  
    result = zeroFill("0.55", 3)
    expect(result).toBe("0550");
  
    result = zeroFill("0.55", 2)
    expect(result).toBe("055");
  
    result = zeroFill("4", 2)
    expect(result).toBe("400");
  
    result = zeroFill("4.0", 2)
    expect(result).toBe("400");
  
    result = zeroFill("40.00000", 2)
    expect(result).toBe("4000");
  
    result = zeroFill("40000.00", 2)
    expect(result).toBe("4000000");
  });