[
  {
      "description": "validation of duration strings",
      "schema": {"format": "duration"},
      "comment": "see https://en.wikipedia.org/wiki/ISO_8601#Durations for examples and clarifications",
      "tests": [
          {
              "description": "elements may be omitted if their value is zero",
              "data": "PT1H1S",
              "valid": true
          },
          {
              "description": "half a year duration, with full stop decimal point",
              "comment": "ISO 8601 revision in year 2000 added decimals",
              "data": "P0.5Y",
              "valid": true
          },
          {
              "description": "half a year duration, with comma decimal point",
              "data": "P0,5Y",
              "valid": true
          },
          {
              "description": "only one unit can have a non-integer quantity",
              "data": "P0.5Y2.1M",
              "valid": false
          },
          {
              "description": "only the smallest unit can have a non-integer quantity",
              "data": "P0.5Y2M",
              "valid": false
          }
      ]
  }
]