Run the [`fixtures/ssr` test harness](https://github.com/facebook/react/tree/master/fixtures/ssr). In the terminal, the following warning is logged:

```
Warning: Unknown prop `onClick` on <a> tag. Remove this prop from the element. For details, see https://fb.me/react-unknown-prop
  in a (at Page.js:12)
  in p (at Page.js:18)
  in div (at Page.js:17)
  in Page (at App.js:12)
  in div (at App.js:10)
  in body (at Chrome.js:17)
  in html (at Chrome.js:9)
  in Chrome (at App.js:9)
  in App (at render.js:18)
```

SSR behavior should match client-side behavior and not warn for a valid attribute.
expect(e.value).toBe('Hello');
          
          e.value = 'Goodbye';
          ReactTestUtils.Simulate.change(e);
          expect(changeCount).toBe(1);
          expect(e.value).toBe('Goodbye');
        });
      });
      describe('user interaction with inputs before client render', function() {
        
        
        
        
        
        const testUserInteractionBeforeClientRender = async (
          element,
          initialValue = 'Hello',
          changedValue = 'Goodbye',
          valueKey = 'value',
        ) => {
          const field = await serverRender(element);
          expect(field[valueKey]).toBe(initialValue);
          
          field[valueKey] = changedValue;
          resetModules();
          
          const clientField = await renderIntoDom(element, field.parentNode);