negative integer with more than one digit can't start with 0

konnik · Sep 19, 2023 · a6a9752 · a6a9752
1 parent 6d3c692
commit a6a9752
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/lib/src/main/kotlin/konnik/json/JsonParser.kt b/lib/src/main/kotlin/konnik/json/JsonParser.kt
@@ -228,7 +228,7 @@ private val integer: Parser<String> = oneOf(
     onenine + digits,
     digit,
     s("-") + onenine + digits,
-    s("-") + digits,
+    s("-") + digit,
 )
 
 /**

diff --git a/lib/src/test/kotlin/konnik/json/JsonParserKtTest.kt b/lib/src/test/kotlin/konnik/json/JsonParserKtTest.kt
@@ -43,7 +43,8 @@ class JsonParserKtTest {
 
     @Test
     fun `numbers - invalid ones`() {
-        assertEquals(null, parseJson("0123")) // cant start with 0
+        assertEquals(null, parseJson("0123")) // cant start with 0 if more than one digit
+        assertEquals(null, parseJson("-0123")) // negative numbers with more than on digit can't start with 0
         assertEquals(null, parseJson(".123")) // must have number before decimal point
         assertEquals(null, parseJson("+12")) // positive numbers does not use prefix +
     }