test(form): Element's sCU is called with correct value (formsy#97)

tests/Element-spec.js

@@ -607,6 +607,38 @@ export default {
 
  },
 
+ 'input should call shouldComponentUpdate with correct value': function (test) {
+
+ var renderSpy = sinon.spy();
+
+ const Input = InputFactory({
+ shouldComponentUpdate: function(prevProps) {
+ return prevProps.value !== this.props.value
+ },
+ render: function() {
+ renderSpy();
+ return <input type={this.props.type} value={this.props.value} onChange={this.updateValue}/>;
+ }
+ });
+
+ const form = TestUtils.renderIntoDocument(
+ <Formsy>
+ <Input name="foo" value="foo"/>
+ </Formsy>
+ );
+
+ const input = TestUtils.findRenderedDOMComponentWithTag(form, 'INPUT');
+
+ test.equal(renderSpy.calledOnce, true);
+
+ TestUtils.Simulate.change(input, {target: {value: 'fooz'}});
+ test.equal(input.value, 'fooz');
+ test.equal(renderSpy.calledTwice, true);
+
+ test.done();
+
+ },
+
  'binds all necessary methods': function (test) {
  const onInputRef = input => {
  [