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.key() => String

Returns the key value for the node of the current wrapper.

NOTE: can only be called on a wrapper of a single node.

Example

const wrapper = mount(
  <ul>
    {['foo', 'bar'].map(s => <li key={s}>{s}</li>)}
  </ul>
).find('li');
expect(wrapper.at(0).key()).to.equal('foo');
expect(wrapper.at(1).key()).to.equal('bar');