I have the following component:
import React, { Component } from 'react';
import {Link, IndexLink} from 'react-router';
class Navbar extends Component {
renderLinks = (linksData) => {
return linksData.map((linkData) => {
if(linkData.to === '/') {
return(
<div className="navbar-link-container" key={linkData.to}>
<IndexLink activeClassName="navbar-active-link" to={linkData.to}>
<i className="navbar-icon material-icons">{linkData.icon}</i>
<span className="navbar-link-text">{linkData.text}</span>
</IndexLink>
</div>
)
}
else {
return(
<div className="navbar-link-container" key={linkData.to}>
<Link activeClassName="navbar-active-link" to={linkData.to}>
<i className="navbar-icon material-icons">{linkData.icon}</i>
<span className="navbar-link-text">{linkData.text}</span>
</Link>
</div>
)
}
})
};
render() {
return (
<div className={`navbar navbar-${this.props.linksData.length}`}>
{this.renderLinks(this.props.linksData)}
</div>
)
}
}
Navbar.propTypes = {
linksData: React.PropTypes.array.isRequired,
};
export default Navbar;
Now I am trying to write a unit test that will check the if condition (returning IndexLink or Link depending on the .to property):
But I can't seem to test for the exact jsx return of the function, since when I console.log one of the returns I get this:
{ '$$typeof': Symbol(react.element),
type: 'div',
key: '/',
ref: null,
props:
{ className: 'navbar-link-container',
children:
{ '$$typeof': Symbol(react.element),
type: [Object],
key: null,
ref: null,
props: [Object],
_owner: null,
_store: {} } },
_owner: null,
_store: {} }
This is the test I have written so far:
it('renderLinks should return a IndexLink', () => {
const wrapper = shallow(<Navbar linksData={mockLinksData}/>);
const renderLinksReturn = wrapper.instance().renderLinks(mockLinksData);
let foundIndexLink = false;
renderLinksReturn.map((linkHtml) => {
console.log(linkHtml);
});
expect(foundIndexLink).toBe(true);
})
Now I do not know what to test against to see if the function is running correctly. Is there a way to 'mount' the return of the function like a component? Or is there a simple method to return a html string of the actual return that I can check against?
Best Answer
Faced similar issue where we were passing a jsx component to another component as a prop.
You can shallow render the returned jsx since it's like a valid React Function/Stateless Component. eg:
And continue with your usual enzyme assertions.