inputField.test.jsx

import { mount } from 'enzyme';
import React from 'react';
import InputField from './index';

function setup() {
    const props = {
        label: 'FieldLabel',
        name: 'fieldName',
        onChange: jest.fn(),
        value: 'fieldValue'
    };
    return {
        props,
        wrapper: mount(<InputField {...props} />)
    };
}

describe('Test for InputField Component', () => {
    it('Should call onChange method on changing value in input field', () => {
        const component = setup();
        component.wrapper
            .find('input')
            .simulate('change', { target: { value: 'Something' } });
        expect(component.props.onChange).toHaveBeenCalled();
    });
});