bc518174
 王天杨
提交两个项目文件
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import { fireEvent, screen } from '@testing-library/react';
import { DayPickerProps } from 'DayPicker';
import { customRender } from 'test/render';
import { freezeBeforeAll } from 'test/utils';
import { Dropdown, DropdownProps } from 'components/Dropdown';
import { defaultClassNames } from 'contexts/DayPicker/defaultClassNames';
import { CustomComponents } from 'types/DayPickerBase';
const today = new Date(2021, 8);
freezeBeforeAll(today);
function setup(props: DropdownProps, dayPickerProps?: DayPickerProps) {
customRender(<Dropdown {...props} />, dayPickerProps);
}
const props: Required<DropdownProps> = {
name: 'dropdown',
'aria-label': 'foo',
onChange: jest.fn(),
caption: 'Some caption',
className: 'test',
value: 'bar',
children: <option value={'bar'} />,
style: {}
};
describe('when rendered', () => {
let combobox: HTMLElement;
let label: HTMLElement;
beforeEach(() => {
setup(props);
combobox = screen.getByRole('combobox');
label = screen.getByText(props['aria-label']);
});
test('should render the vhidden aria label', () => {
expect(label).toHaveClass(defaultClassNames.vhidden);
});
test('should render the combobox', () => {
expect(combobox).toBeInTheDocument();
});
describe('when the combobox changes', () => {
beforeEach(() => {
fireEvent.change(combobox);
});
test('should call the "onChange" eve, nt handler', () => {
expect(props.onChange).toHaveBeenCalled();
});
});
test('should render the combobox with the given value', () => {
expect(combobox).toHaveValue(props.value);
});
});
describe('when using a custom IconDropdown component', () => {
const components: CustomComponents = {
IconDropdown: () => <div>Custom IconDropdown</div>
};
beforeEach(() => {
setup(props, { components });
});
test('it should render the custom component instead', () => {
expect(screen.getByText('Custom IconDropdown')).toBeInTheDocument();
});
});
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