add GetFieldValueAsync test cases

Commit migrated from https://github.com/dotnet/corefx/commit/eeb6139173c18af0b4c14a34fcc4745644a11b57

diff --git a/src/libraries/System.Data.SqlClient/tests/ManualTests/SQL/DataStreamTest/DataStreamTest.cs b/src/libraries/System.Data.SqlClient/tests/ManualTests/SQL/DataStreamTest/DataStreamTest.cs
index 4354954..39052d2 100644 (file)
--- a/src/libraries/System.Data.SqlClient/tests/ManualTests/SQL/DataStreamTest/DataStreamTest.cs
+++ b/src/libraries/System.Data.SqlClient/tests/ManualTests/SQL/DataStreamTest/DataStreamTest.cs
@@ -296,6 +296,8 @@ namespace System.Data.SqlClient.ManualTesting.Tests
                     rdr.GetFieldValue<SqlString>(15);
                     rdr.GetFieldValue<XmlReader>(14);
                     rdr.GetFieldValue<XmlReader>(15);
+                    rdr.GetFieldValueAsync<XmlReader>(14);
+                    rdr.GetFieldValueAsync<XmlReader>(15);
 
                     rdr.Read();
                     Assert.True(rdr.IsDBNullAsync(11).Result, "FAILED: IsDBNull was false for a null value");