added explanation for base64 string length

dotnet · Mar 3, 2020 · b9b42e1 · b9b42e1
1 parent d09874d
commit b9b42e1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/libraries/System.Text.Json/tests/JsonBase64TestData.cs b/src/libraries/System.Text.Json/tests/JsonBase64TestData.cs
@@ -30,7 +30,7 @@ public static IEnumerable<object[]> InvalidBase64Tests()
         private static string GenerateRandomValidLargeString()
         {
             var random = new Random(42);
-            var charArray = new char[502];
+            var charArray = new char[502]; // valid Base64 strings must have length divisible by 4 (not including surrounding quotes)
             charArray[0] = '"';
             for (int i = 1; i < charArray.Length - 1; i++)
             {