public function testFailEnable($mockName)
{
$builder = new MockBuilder();
$builder->setNamespace(__NAMESPACE__)->setName(strtolower($mockName))->setFunctionProvider(new FixedValueFunction(1234));
$this->mock = $builder->build();
$this->mock->enable();
$failingMock = $builder->setName($mockName)->build();
$failingMock->enable();
}