'Make sure a value for choices works as expected.'

def test_choices(self):

    f = serializers.ChoiceField(choices=self.CHOICES)
    value = self.CHOICES[0][0]
    try:
        f.to_internal_value(value)
    except serializers.ValidationError:
        self.fail((u'Value    %s    does    not    validate' % str(value)))
