Create test Rock_Datet_DateObjTest::testGetTimeStampReturnsInt()
Create test Rock_Datet_DateObjTest::testGetTimeStampReturnsInt()

Signed-off-by: Rogerio Prado de Jesus <2c195cbc93efbe99210d17024a1791a17497caa8@gmail.com>

RockPhp/Datet,RockPhp/Datet