Update DataStreamTest.cs (#1405)

src/Microsoft.Data.SqlClient/tests/ManualTests/SQL/DataStreamTest/DataStreamTest.cs

@@ -1557,6 +1557,7 @@ private static void ReadStream(string connectionString)
                             DataTestUtility.AssertThrowsWrapper<ArgumentOutOfRangeException>(() => stream.Read(buffer, 2, -1));
 
                             // ArgumentException is thrown in net5 and earlier. ArgumentOutOfRangeException in net6 and later
+                            ArgumentException ex = Assert.ThrowsAny<ArgumentException>(() => stream.Read(buffer, buffer.Length, buffer.Length));
                             Assert.True(ex.GetType() == typeof(ArgumentException) || ex.GetType() == typeof(ArgumentOutOfRangeException),
                                         "Expected: ArgumentException in net5 and earlier. ArgumentOutOfRangeException in net6 and later.");
                             ex = Assert.ThrowsAny<ArgumentException>(() => stream.Read(buffer, int.MaxValue, int.MaxValue));