verdnatura-chat/app/containers/Button/Button.test.tsx

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import React from 'react';
import { View } from 'react-native';
import { fireEvent, render } from '@testing-library/react-native';
import Button from '.';
const onPressMock = jest.fn();
const testProps = {
title: 'Press me!',
type: 'primary',
onPress: onPressMock,
testID: 'testButton',
initialText: 'Initial text',
textAfterPress: 'Button pressed!'
};
const TestButton = ({ loading = false, disabled = false }) => (
<View>
<Button
title={testProps.title}
type={testProps.title}
onPress={testProps.onPress}
testID={testProps.testID}
accessibilityLabel={testProps.title}
disabled={disabled}
loading={loading}
/>
</View>
);
describe('ButtonTests', () => {
test('rendered', async () => {
const { findByTestId } = render(<TestButton />);
const Button = await findByTestId(testProps.testID);
expect(Button).toBeTruthy();
});
test('rendered with correct title', async () => {
const { findByText } = render(<TestButton />);
const ButtonTitle = await findByText(testProps.title);
expect(ButtonTitle).toBeTruthy();
expect(ButtonTitle.props.children).toEqual(testProps.title);
});
test('find button using accessibilityLabel', async () => {
const { findByA11yLabel } = render(<TestButton />);
const Button = await findByA11yLabel(testProps.title);
expect(Button).toBeTruthy();
});
test('title not visible while loading', async () => {
const { queryByText } = render(<TestButton loading={true} />);
const ButtonTitle = await queryByText(testProps.title);
expect(ButtonTitle).toBeNull();
});
test('should not trigger onPress on disabled button', async () => {
const { findByTestId } = render(<TestButton disabled={true} />);
const Button = await findByTestId(testProps.testID);
fireEvent.press(Button);
expect(onPressMock).not.toHaveBeenCalled();
});
test('should trigger onPress function on button press', async () => {
const { findByTestId } = render(<TestButton />);
const Button = await findByTestId(testProps.testID);
fireEvent.press(Button);
expect(onPressMock).toHaveBeenCalled();
});
});