public function testGetDeviceFalse() { $deviceOneMock = m::mock(SHCdevEnvSensor::class); $deviceOneMock->shouldReceive('setDeviceFactory'); $factory = new DeviceFactory(); $factory->addDevice($deviceOneMock, 'SHCdevEnvSensor'); $instance = $factory->getDevice('NonExistingDevice'); $this->assertFalse($instance); }