vnext/src/components/__tests__/LoginButton.test.js


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import React from 'react';

import LoginButton from '../LoginButton';
import { create, act } from 'react-test-renderer';

test('Login button and form are renders correctly', () => {
    var button = null;
    act(() => {
        button = create(
            <LoginButton title="Log in" onAuth={() => { }} />
        );
    });
    let link = button.toJSON();
    expect(link).toMatchSnapshot();

    act(() => {
        button.root.findByType('a').props.onClick();
    });
    let modal = button.toJSON();
    expect(modal).toMatchSnapshot();
});