[
    {
        "description": "validation of duration strings",
        "comment": "RFC 3339 Appendix A defines the ABNF grammar for ISO-8601 durations used by JSON Schema format 'duration'. These tests enforce only the syntax defined by that grammar.",
        "schema": {
            "$schema": "https://json-schema.org/draft/2020-12/schema",
            "format": "duration"
        },
        "tests": [
            {
                "description": "all string formats ignore integers",
                "data": 12,
                "valid": true
            },
            {
                "description": "all string formats ignore floats",
                "data": 13.7,
                "valid": true
            },
            {
                "description": "all string formats ignore objects",
                "data": {},
                "valid": true
            },
            {
                "description": "all string formats ignore arrays",
                "data": [],
                "valid": true
            },
            {
                "description": "all string formats ignore booleans",
                "data": false,
                "valid": true
            },
            {
                "description": "all string formats ignore nulls",
                "data": null,
                "valid": true
            },
            {
                "description": "a valid duration string",
                "data": "P4DT12H30M5S",
                "valid": true
            },
            {
                "description": "an invalid duration string",
                "data": "PT1D",
                "valid": false
            },
            {
                "description": "must start with P",
                "data": "4DT12H30M5S",
                "valid": false
            },
            {
                "description": "no elements present",
                "data": "P",
                "valid": false
            },
            {
                "description": "no time elements present",
                "data": "P1YT",
                "valid": false
            },
            {
                "description": "no date or time elements present",
                "data": "PT",
                "valid": false
            },
            {
                "description": "elements out of order",
                "data": "P2D1Y",
                "valid": false
            },
            {
                "description": "missing time separator",
                "data": "P1D2H",
                "valid": false
            },
            {
                "description": "time element in the date position",
                "data": "P2S",
                "valid": false
            },
            {
                "description": "four years duration",
                "data": "P4Y",
                "valid": true
            },
            {
                "description": "zero time, in seconds",
                "data": "PT0S",
                "valid": true
            },
            {
                "description": "zero time, in days",
                "data": "P0D",
                "valid": true
            },
            {
                "description": "one month duration",
                "data": "P1M",
                "valid": true
            },
            {
                "description": "one minute duration",
                "data": "PT1M",
                "valid": true
            },
            {
                "description": "one and a half days, in hours",
                "data": "PT36H",
                "valid": true
            },
            {
                "description": "one and a half days, in days and hours",
                "data": "P1DT12H",
                "valid": true
            },
            {
                "description": "two weeks",
                "data": "P2W",
                "valid": true
            },
            {
                "description": "weeks cannot be combined with other units",
                "data": "P1Y2W",
                "valid": false
            },
            {
                "description": "invalid non-ASCII '২' (a Bengali 2)",
                "data": "P২Y",
                "valid": false
            },
            {
                "description": "element without unit",
                "data": "P1",
                "valid": false
            },
            {
                "description": "all date and time components",
                "data": "P1Y2M3DT4H5M6S",
                "valid": true
            },
            {
                "description": "date components only",
                "data": "P1Y2M3D",
                "valid": true
            },
            {
                "description": "time components only",
                "data": "PT1H2M3S",
                "valid": true
            },
            {
                "description": "month and day",
                "data": "P1M2D",
                "valid": true
            },
            {
                "description": "hour and minute",
                "data": "PT1H30M",
                "valid": true
            },
            {
                "description": "multi-digit values in all components",
                "data": "P10Y10M10DT10H10M10S",
                "valid": true
            },
            {
                "description": "fractional duration is not allowed by RFC 3339 ABNF",
                "comment": "numeric components use 1*DIGIT where DIGIT = %x30-39; '.' is not allowed",
                "data": "PT0.5S",
                "valid": false
            },
            {
                "description": "leading whitespace is invalid",
                "data": " P1D",
                "valid": false
            },
            {
                "description": "trailing whitespace is invalid",
                "data": "P1D ",
                "valid": false
            },
            {
                "description": "empty string is invalid",
                "data": "",
                "valid": false
            },
            {
                "description": "years and months can appear without days",
                "data": "P1Y2M",
                "valid": true
            },
            {
                "description": "years and days cannot appear without months",
                "data": "P1Y2D",
                "valid": false
            },
            {
                "description": "months and days can appear without years",
                "data": "P1M2D",
                "valid": true
            },
            {
                "description": "hours and minutes can appear without seconds",
                "data": "PT1H2M",
                "valid": true
            },
            {
                "description": "hours and seconds cannot appear without minutes",
                "data": "PT1H2S",
                "valid": false
            },
            {
                "description": "minutes and seconds can appear without hour",
                "data": "PT1M2S",
                "valid": true
            }
        ]
    }
]