Named instance not supported with proxy

Author: MichelZ

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

@@ -10,10 +10,11 @@
 using System.Text;
 using System.Threading;
 using Xunit;
+using Xunit.Abstractions;
 
 namespace Microsoft.Data.SqlClient.ManualTesting.Tests
 {
-    public static class DataReaderTest
+    public class DataReaderTest
     {
         private static readonly object s_rowVersionLock = new();
 
@@ -25,6 +26,13 @@ private enum Tristate : byte
             True = 2
         }
 
+        private ITestOutputHelper _testOutputHelper;
+
+        public DataReaderTest(ITestOutputHelper testOutputHelper)
+        {
+            _testOutputHelper = testOutputHelper;
+        }
+
         [ConditionalFact(typeof(DataTestUtility), nameof(DataTestUtility.AreConnStringsSetup))]
         public static void LoadReaderIntoDataTableToTestGetSchemaTable()
         {
@@ -331,6 +339,36 @@ public static void CheckLegacyNullRowVersionIsEmptyArray()
             }
         }
 
+        [ConditionalFact(typeof(DataTestUtility), nameof(DataTestUtility.AreConnStringsSetup), nameof(DataTestUtility.IsNotAzureSynapse))]
+        public void BugTest()
+        {
+            int rows = 0;
+            int infoMessages = 0;
+            using (var conn = new SqlConnection(DataTestUtility.TCPConnectionString))
+            {
+                conn.Open();
+
+                conn.InfoMessage += (sender, e) => infoMessages++;
+
+                var cmd = conn.CreateCommand();
+                cmd.CommandText = "PRINT('1'); PRINT('2'); SELECT * FROM Customers";
+                using (var dr = cmd.ExecuteReader())
+                {
+                    Assert.True(dr.HasRows);
+                    while (dr.Read())
+                    {
+                        Assert.True(dr.HasRows);
+                        rows++;
+                    }
+
+                }
+
+                _testOutputHelper.WriteLine($"Rows: {rows}");
+                Assert.True(rows > 0);
+                Assert.Equal(2, infoMessages);
+            }
+        }
+
         private static Tristate SetLegacyRowVersionNullBehavior(Tristate value)
         {
             Type switchesType = typeof(SqlCommand).Assembly.GetType("Microsoft.Data.SqlClient.LocalAppContextSwitches");