Initial failing test

src/components/LoadingIndicator.js

@@ -0,0 +1,12 @@
+import React, { Component } from 'react';
+import PropTypes from 'prop-types';
+
+export default class LoadingIndicator extends Component {
+  render() {
+    return null;
+  }
+}
+
+LoadingIndicator.propTypes = {
+  isLoading: PropTypes.bool.isRequired,
+};

src/components/LoadingIndicator.test.js

@@ -0,0 +1,17 @@
+import React from 'react';
+import { mount } from 'enzyme';
+import LoadingIndicator from './LoadingIndicator'
+
+describe('LoadingIndicator', () => {
+  describe('when isLoading is false', () => {
+    it('should render children', () => {
+      const wrapper = mount(
+        <LoadingIndicator isLoading={false}>
+          <div>ahoy!</div>
+        </LoadingIndicator>
+      );
+      expect(wrapper.html()).toEqual('<div>ahoy!</div>')
+      wrapper.unmount();
+    });
+  });
+});