1 files changed, 93 insertions, 0 deletions
diff --git a/tests/draft2020-12/optional/format/duration.json b/tests/draft2020-12/optional/format/duration.json
new file mode 100644
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+++ b/tests/draft2020-12/optional/format/duration.json
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+[
+  {
+      "description": "validation of duration strings",
+      "schema": {"format": "duration"},
+      "tests": [
+          {
+              "description": "a valid duration string",
+              "data": "P4DT12H30M5S",
+              "valid": true
+          },
+          {
+              "description": "an invalid duration string",
+              "data": "PT1D",
+              "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
+          }
+      ]
+  }
+]