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import { render, fireEvent, screen } from '@testing-library/react';
import React from 'react';
import renderer from 'react-test-renderer';
import Button from '../button';
describe('<Button />', () => {
it('renders a button element', () => {
const component = renderer.create(<Button />);
const tree = component.toJSON();
expect(tree).toMatchSnapshot();
});
it('renders the given text', () => {
const text = 'foo';
const component = renderer.create(<Button text={text} />);
const tree = component.toJSON();
expect(tree).toMatchSnapshot();
});
it('handles click events using the given handler', () => {
const handler = jest.fn();
render(<Button onClick={handler}>button</Button>);
fireEvent.click(screen.getByText('button'));
expect(handler.mock.calls.length).toEqual(1);
});
it('does not handle click events if props.disabled given', () => {
const handler = jest.fn();
render(<Button onClick={handler} disabled>button</Button>);
fireEvent.click(screen.getByText('button'));
expect(handler.mock.calls.length).toEqual(0);
});
it('renders a disabled attribute if props.disabled given', () => {
const component = renderer.create(<Button disabled />);
const tree = component.toJSON();
expect(tree).toMatchSnapshot();
});
it('renders the children', () => {
const children = <p>children</p>;
const component = renderer.create(<Button>{children}</Button>);
const tree = component.toJSON();
expect(tree).toMatchSnapshot();
});
it('renders the props.text instead of children', () => {
const text = 'foo';
const children = <p>children</p>;
const component = renderer.create(<Button text={text}>{children}</Button>);
const tree = component.toJSON();
expect(tree).toMatchSnapshot();
});
it('renders class="button--block" if props.block given', () => {
const component = renderer.create(<Button block />);
const tree = component.toJSON();
expect(tree).toMatchSnapshot();
});
it('adds class "button-secondary" if props.secondary given', () => {
const component = renderer.create(<Button secondary />);
const tree = component.toJSON();
expect(tree).toMatchSnapshot();
});
});
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