private function setMockFieldsService($fieldHandle, MockObject $mockField)
{
$mockFieldsService = $this->getMockBuilder('Craft\\FieldsService')->disableOriginalConstructor()->getMock();
$mockFieldsService->expects($this->exactly(1))->method('getFieldByHandle')->with($fieldHandle)->willReturn($mockField);
$this->setComponent(craft(), 'fields', $mockFieldsService);
}