Mailspring/spec/n1-spec-runner/react-test-utils-extensions.es6

import _ from 'underscore';
import ReactDOM from "react-dom";
import ReactTestUtils from 'react-addons-test-utils';

export function scryRenderedComponentsWithTypeAndProps(root, type, props) {
  if (!root) { throw new Error("Must supply a root to scryRenderedComponentsWithTypeAndProps"); }
  return _.compact(_.map(ReactTestUtils.scryRenderedComponentsWithType(root, type), (el) => {
    if (_.isEqual(_.pick(el.props, Object.keys(props)), props)) {
      return el;
    }
    return false;
  }));
}

let ReactElementContainers = [];
// Override ReactTestUtils.renderIntoDocument so that
// we can remove all the created elements after the test completes.
export function renderIntoDocument(element) {
  const container = document.createElement('div');
  ReactElementContainers.push(container);
  return ReactDOM.render(element, container);
}

export function unmountAll() {
  for (let i = 0; i < ReactElementContainers.length; i++) {
    const container = ReactElementContainers[i];
    ReactDOM.unmountComponentAtNode(container);
  }
  ReactElementContainers = [];
}