rsnext/test/integration/client-navigation/pages/url-prop-override.js

import React from 'react'
export default class extends React.Component {
  static getInitialProps() {
    return {
      url: 'test', // This gets overridden by Next in lib/_app.js
    }
  }
  render() {
    const { url } = this.props
    return (
      <div>
        <p id="pathname">{url.pathname}</p>
        <p id="query">{Object.keys(url.query).length}</p>
        <p id="aspath">{url.asPath}</p>
      </div>
    )
  }
}