Created tests for new QR code dropdowns

test/short-urls/helpers/qr-codes/QrErrorCorrectionDropdown.test.tsx

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+import { shallow, ShallowWrapper } from 'enzyme';
+import { DropdownItem } from 'reactstrap';
+import { QrErrorCorrection } from '../../../../src/utils/helpers/qrCodes';
+import { QrErrorCorrectionDropdown } from '../../../../src/short-urls/helpers/qr-codes/QrErrorCorrectionDropdown';
+
+describe('<QrErrorCorrectionDropdown />', () => {
+  const initialErrorCorrection: QrErrorCorrection = 'Q';
+  const setErrorCorrection = jest.fn();
+  let wrapper: ShallowWrapper;
+
+  beforeEach(() => {
+    wrapper = shallow(
+      <QrErrorCorrectionDropdown errorCorrection={initialErrorCorrection} setErrorCorrection={setErrorCorrection} />,
+    );
+  });
+
+  afterEach(() => wrapper?.unmount());
+  afterEach(jest.clearAllMocks);
+
+  it('renders initial state', () => {
+    const items = wrapper.find(DropdownItem);
+
+    expect(wrapper.prop('text')).toEqual('Error correction (Q)');
+    expect(items.at(0).prop('active')).toEqual(false);
+    expect(items.at(1).prop('active')).toEqual(false);
+    expect(items.at(2).prop('active')).toEqual(true);
+    expect(items.at(3).prop('active')).toEqual(false);
+  });
+
+  it('invokes callback when items are clicked', () => {
+    const items = wrapper.find(DropdownItem);
+
+    expect(setErrorCorrection).not.toHaveBeenCalled();
+
+    items.at(0).simulate('click');
+    expect(setErrorCorrection).toHaveBeenCalledWith('L');
+
+    items.at(1).simulate('click');
+    expect(setErrorCorrection).toHaveBeenCalledWith('M');
+
+    items.at(2).simulate('click');
+    expect(setErrorCorrection).toHaveBeenCalledWith('Q');
+
+    items.at(3).simulate('click');
+    expect(setErrorCorrection).toHaveBeenCalledWith('H');
+  });
+});

test/short-urls/helpers/qr-codes/QrFormatDropdown.test.tsx

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+import { shallow, ShallowWrapper } from 'enzyme';
+import { DropdownItem } from 'reactstrap';
+import { QrCodeFormat } from '../../../../src/utils/helpers/qrCodes';
+import { QrFormatDropdown } from '../../../../src/short-urls/helpers/qr-codes/QrFormatDropdown';
+
+describe('<QrFormatDropdown />', () => {
+  const initialFormat: QrCodeFormat = 'svg';
+  const setFormat = jest.fn();
+  let wrapper: ShallowWrapper;
+
+  beforeEach(() => {
+    wrapper = shallow(<QrFormatDropdown format={initialFormat} setFormat={setFormat} />);
+  });
+
+  afterEach(() => wrapper?.unmount());
+  afterEach(jest.clearAllMocks);
+
+  it('renders initial state', () => {
+    const items = wrapper.find(DropdownItem);
+
+    expect(wrapper.prop('text')).toEqual('Format (svg)');
+    expect(items.at(0).prop('active')).toEqual(false);
+    expect(items.at(1).prop('active')).toEqual(true);
+  });
+
+  it('invokes callback when items are clicked', () => {
+    const items = wrapper.find(DropdownItem);
+
+    expect(setFormat).not.toHaveBeenCalled();
+
+    items.at(0).simulate('click');
+    expect(setFormat).toHaveBeenCalledWith('png');
+
+    items.at(1).simulate('click');
+    expect(setFormat).toHaveBeenCalledWith('svg');
+  });
+});