| PASS | empty value | |
| PASS | Valid value: value should be 00:00 | |
| PASS | Valid value: value should be 00:00:00 | |
| PASS | Valid value: value should be 00:00:00.0 | |
| PASS | Valid value: value should be 00:00:00.00 | |
| PASS | Valid value: value should be 00:00:00.000 | |
| PASS | Invalid value: fraction should have one, two or three ASCII digits. Value should be empty | |
| PASS | Invalid value: hour should have two ASCII digits. Value should be empty | |
| PASS | Invalid value: minutes should have two ASCII digits. Value should be empty | |
| PASS | Invalid value: seconds should have two ASCII digits. Value should be empty | |
| PASS | Invalid value: hour > 23. Value should be empty | |
| PASS | Invalid value: minute > 59. Value should be empty | |
| PASS | Invalid value: second > 59. Value should be empty | |
| PASS | Value >= min attribute | |
| PASS | Value < min attribute | |
| PASS | Value <= max attribute | |
| PASS | Value > max attribute | |