assertSame('00:00:00', Format::duration(-5)); $this->assertSame('12:10:13', Format::duration(12 * 3600 + 10 * 60 + 13)); $this->assertSame('1d 00:00:00', Format::duration(86400)); $this->assertSame('1d 12:10:13', Format::duration(86400 + 12 * 3600 + 10 * 60 + 13)); } }