From f502032c4da529a8401c45f4b86de7de0bdc34f8 Mon Sep 17 00:00:00 2001
From: Meghan Eskolin <meghaneskolin@gmail.com>
Date: Thu, 14 Apr 2022 14:18:31 -0500
Subject: [PATCH] Support for parsing ISO 8601 duration format with only time
 component

---
 src/primitiveLiteral.ts   |  2 +-
 test/primitive-cases.json | 80 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 81 insertions(+), 1 deletion(-)

diff --git a/src/primitiveLiteral.ts b/src/primitiveLiteral.ts
index 627f5f1..213f015 100644
--- a/src/primitiveLiteral.ts
+++ b/src/primitiveLiteral.ts
@@ -187,7 +187,7 @@ export namespace PrimitiveLiteral {
         index++;
         let dayNext = Utils.required(value, index, Lexer.DIGIT, 1);
         if (dayNext === index && value[index + 1] !== 0x54) return;
-        index = dayNext;
+        if (dayNext != 0) index = dayNext;
         if (value[index] === 0x44) index++;
         let end = index;
         if (value[index] === 0x54) {
diff --git a/test/primitive-cases.json b/test/primitive-cases.json
index d0625a3..a01fe55 100644
--- a/test/primitive-cases.json
+++ b/test/primitive-cases.json
@@ -325,6 +325,86 @@
       "value": "Edm.Duration"
     }
   },
+  {
+    "-Name": "Duration 0 days",
+    "-Rule": "duration",
+    "Input": "duration'P0D'",
+    "result": {
+      "position": 0,
+      "type": "Literal",
+      "value": "Edm.Duration"
+    }
+  },
+  {
+    "-Name": "Duration 2-digit days",
+    "-Rule": "duration",
+    "Input": "duration'P10D'",
+    "result": {
+      "position": 0,
+      "type": "Literal",
+      "value": "Edm.Duration"
+    }
+  },
+  {
+    "-Name": "Duration days and hours",
+    "-Rule": "duration",
+    "Input": "duration'P10DT23H'",
+    "result": {
+      "position": 0,
+      "type": "Literal",
+      "value": "Edm.Duration"
+    }
+  },
+  {
+    "-Name": "Duration 0 days and 2 hours",
+    "-Rule": "duration",
+    "Input": "duration'P0DT2H'",
+    "result": {
+      "position": 0,
+      "type": "Literal",
+      "value": "Edm.Duration"
+    }
+  },
+  {
+    "-Name": "Duration hours no day component",
+    "-Rule": "duration",
+    "Input": "duration'PT2H'",
+    "result": {
+      "position": 0,
+      "type": "Literal",
+      "value": "Edm.Duration"
+    }
+  },
+  {
+    "-Name": "Duration minutes no day component",
+    "-Rule": "duration",
+    "Input": "duration'PT30M'",
+    "result": {
+      "position": 0,
+      "type": "Literal",
+      "value": "Edm.Duration"
+    }
+  },
+  {
+    "-Name": "Duration seconds no day component",
+    "-Rule": "duration",
+    "Input": "duration'PT5S'",
+    "result": {
+      "position": 0,
+      "type": "Literal",
+      "value": "Edm.Duration"
+    }
+  },
+  {
+    "-Name": "Duration seconds missing T",
+    "-Rule": "duration",
+    "Input": "duration'P5S'",
+    "result_error": {
+      "position": 0,
+      "type": "Literal",
+      "value": "Edm.Duration"
+    }
+  },
   {
     "-Name": "Decimal: integer",
     "-Rule": "decimalValue",