Simulating text entry with reactJs TestUtils
By setting nameInput.props.value = 'a'; you are not actually updating the value in your component.
You should use React.addons.TestUtils.Simulate.change(nameInput, { target: { value: 'a' } }); or something similar to simulate modifying the actual value.
I found that this syntax works better for me:
const emailInput = component.refs.userEmailInput; emailInput.value = 'test@gmail.com'; Simulate.change(component.refs.userEmailInput);The second line updates the input with the text, 'test@gmail.com'. The last line triggers the change.