public function testStrToTime()
 {
     $this->assertEquals("07:00:00", MultiZeit::strToTime("7:00:00"));
     $this->assertEquals("08:00:00", MultiZeit::strToTime("8:00"));
     $this->assertEquals("09:00:00", MultiZeit::strToTime("9.00"));
     $this->assertEquals("05:00:00", MultiZeit::strToTime("05.0"));
     $this->assertEquals("06:00:00", MultiZeit::strToTime("6:0"));
     $this->assertEquals("04:00:35", MultiZeit::strToTime("4:00,35"));
     $this->assertEquals("08:00:00", MultiZeit::strToTime("8.00"));
     $this->assertEquals("08:00:00", MultiZeit::strToTime("8"));
     $this->assertEquals("29:00:00", MultiZeit::strToTime("29:00:00"));
 }