ant-design/components/qr-code/__tests__/index.test.tsx

import React, { useState } from 'react';

import QRCode from '..';
import mountTest from '../../../tests/shared/mountTest';
import rtlTest from '../../../tests/shared/rtlTest';
import { fireEvent, render } from '../../../tests/utils';
import type { QRCodeProps } from '../interface';

describe('QRCode test', () => {
  mountTest(() => <QRCode value="" />);
  rtlTest(() => <QRCode value="" />);

  it('should correct render', () => {
    const { container } = render(<QRCode value="test" />);
    expect(container?.querySelector<HTMLCanvasElement>('.ant-qrcode canvas')).toBeTruthy();
    expect(container).toMatchSnapshot();
  });

  it('should render `null` and console Error when value not exist', () => {
    const errSpy = jest.spyOn(console, 'error').mockImplementation(() => {});
    const { container } = render(<QRCode value={undefined as unknown as string} />);
    expect(container.firstChild).toBe(null);
    expect(container.firstChild).toMatchSnapshot();
    expect(errSpy).toHaveBeenCalledWith('Warning: [antd: QRCode] need to receive `value` props');
    errSpy.mockRestore();
  });

  it('support custom icon', () => {
    const { container } = render(<QRCode value="test" icon="test" />);
    expect(container?.querySelector<HTMLImageElement>('.ant-qrcode img')).toBeTruthy();
  });

  it('support custom size', () => {
    const { container } = render(<QRCode value="test" size={100} />);
    const canvas = container.querySelector<HTMLCanvasElement>('.ant-qrcode > canvas')!;
    expect(canvas.width).toBe(100);
    expect(canvas.height).toBe(100);
  });

  it('support refresh', () => {
    const refresh = jest.fn();
    const { container } = render(<QRCode value="test" status="expired" onRefresh={refresh} />);
    fireEvent.click(
      container?.querySelector<HTMLButtonElement>('.ant-qrcode button.ant-btn-link')!,
    );
    expect(refresh).toHaveBeenCalled();
  });

  it('support loading', () => {
    const Demo: React.FC = () => {
      const [status, setStatus] = useState<QRCodeProps['status']>('active');
      return (
        <>
          <QRCode value="test" status={status} />
          <button type="button" onClick={() => setStatus('loading')}>
            set loading
          </button>
        </>
      );
    };
    const { container } = render(<Demo />);
    expect(container.querySelector<HTMLDivElement>('.ant-spin-spinning')).toBeFalsy();
    fireEvent.click(container?.querySelector<HTMLButtonElement>('button')!);
    expect(container.querySelector<HTMLDivElement>('.ant-spin-spinning')).toBeTruthy();
  });

  it('support bordered', () => {
    const { container } = render(<QRCode value="test" bordered={false} />);
    expect(container?.querySelector<HTMLDivElement>('.ant-qrcode')).toHaveClass(
      'ant-qrcode-borderless',
    );
  });

  it('should console Error when icon exist && errorLevel is `L`', () => {
    const errSpy = jest.spyOn(console, 'error').mockImplementation(() => {});
    render(<QRCode value="test" icon="test" errorLevel="L" />);
    expect(errSpy).toHaveBeenCalledWith(
      'Warning: [antd: QRCode] ErrorLevel `L` is not recommended to be used with `icon`, for scanning result would be affected by low level.',
    );
    errSpy.mockRestore();
  });

  it('correct style for wrapper & canvas', () => {
    const { container } = render(
      <QRCode value="test" size={60} style={{ width: '100%', height: '80%' }} />,
    );
    expect(container.querySelector<HTMLElement>('.ant-qrcode')).toHaveStyle(
      'width: 100%; height: 80%;',
    );
    expect(container.querySelector<HTMLElement>('.ant-qrcode canvas')).toHaveStyle(
      'width: 100%; height: 80%;',
    );
  });
});