public function testSetOffset() { $this->subject = new Filter(); $this->assertSame(null, $this->subject->getOffset(), 'init offset should ne null'); $this->subject->setOffset(10); $this->assertSame(10, $this->subject->getOffset(), 'set offset correctly'); $this->subject->setOffset('string value'); $this->assertSame(0, $this->subject->getOffset(), 'every value is converted to int values'); }