I have a dropdown component in React that renders a select element with some options. Here is what my test looks like:
import React from 'react';
import { shallow, mount } from 'enzyme';
import expect from 'expect';
import Dropdown from './Dropdown';
fdescribe('Dropdown', () => {
it('should trigger onChange', () => {
const handleChange = jasmine.createSpy('handleChange');
const dropdown = mount(
<div>
<Dropdown
options={[
{ key: '', display: 'Please select a value' },
{ key: 'NJ', display: 'New Jersey' },
{ key: 'NY', display: 'New York' },
]}
onChange={handleChange}
/>
</div>,
);
dropdown.find('select').simulate('change', { target: { value: 'New Jersey' } });
expect(handleChange).toHaveBeenCalled();
});
});
I get the following error in the console: The "actual" argument in expect(actual).toHaveBeenCalled() must be a spy
Any ideas on how to test the onchange()
on the dropdown? Thanks!
The syntax below was what helped me test the value of a select element.
it('should trigger onChange', () => {
const dropdown = mount(<App />);
dropdown.find("select").simulate("change",{target: { value : "New Jersey"}});
expect(dropdown.find("select").props().value).toBe("New Jersey");
});
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