old_contents: import React from 'react';
  import ReactDOM from 'react-dom';
  import App from './App';
  
  it('renders without crashing', () => {
    const div = document.createElement('div');
    ReactDOM.render(<App />, div);
  });
  
new_contents: import React from 'react';
  import ReactDOM from 'react-dom';
  
  import App from './App';
  import ExecutionList from './ExecutionList';
  import QueueList from './QueueList';
  import TaskDetail from './TaskDetail';
  import WorkerList from './WorkerList';
  import WorkerDetail from './WorkerDetail';
  import WorkflowList from './WorkflowList';
  import WorkflowDetail from './WorkflowDetail';
  
  /*
  * TODO:
   * Mock API
   * Pass ID to Detail objects
   * Assert things
  * */
  
  it('homepage renders without crashing', () => {
    const div = document.createElement('div');
    ReactDOM.render(<App />, div);
  });
  
  it('ExecutionList renders without crashing', () => {
    const div = document.createElement('div');
    ReactDOM.render(<ExecutionList />, div);
  });
  
  it('QueueList renders without crashing', () => {
    const div = document.createElement('div');
    ReactDOM.render(<QueueList />, div);
  });
  
  xit('TaskDetail renders without crashing', () => {
    const div = document.createElement('div');
    ReactDOM.render(<TaskDetail />, div);
  });
  
  it('WorkerList renders without crashing', () => {
    const div = document.createElement('div');
    ReactDOM.render(<WorkerList />, div);
  });
  
  xit('WorkerDetail renders without crashing', () => {
    const div = document.createElement('div');
    ReactDOM.render(<WorkerDetail />, div);
  });
  
  it('WorkflowList renders without crashing', () => {
    const div = document.createElement('div');
    ReactDOM.render(<WorkflowList />, div);
  });
  
  xit('WorkflowDetail renders without crashing', () => {
    const div = document.createElement('div');
    ReactDOM.render(<WorkflowDetail />, div);
  });
  
subject: add simple frontend tests