fix 3527

shotren new test duration by using larger increments

Author: Wraith2

src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/SqlDataReader.cs

@@ -4238,9 +4238,7 @@ private TdsOperationStatus TryResetBlobState()
             else
             {
                 Debug.Assert(
-                    (_sharedState._columnDataBytesRemaining == 0 || _sharedState._columnDataBytesRemaining == -1)
-                    &&
-                    (_stateObj._longlen == 0 || _stateObj.IsSnapshotContinuing()),
+                    (_sharedState._columnDataBytesRemaining == 0 || _sharedState._columnDataBytesRemaining == -1),
                     "Haven't read header yet, but column is partially read?"
                 );
             }
@@ -5395,6 +5393,10 @@ private static Task<T> GetFieldValueAsyncExecute<T>(Task task, object state)
                     {
                         return Task.FromResult<T>(reader.GetFieldValueFromSqlBufferInternal<T>(reader._data[columnIndex], reader._metaData[columnIndex], isAsync: true));
                     }
+                    else
+                    {
+                        return reader.ExecuteAsyncCall(context);
+                    }
                 }
             }
 

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

@@ -1039,7 +1039,7 @@ [Value] [nvarchar](max) NULL
                     builder.PersistSecurityInfo = true;
                     builder.Pooling = false;
 
-                    for (int packetSize = 512; packetSize<2048; packetSize++)
+                    for (int packetSize = 512; packetSize<2048; packetSize+=3)
                     {
                         builder.PacketSize = packetSize;
                         using (SqlConnection sizedConnection = new SqlConnection(builder.ToString()))