Fix inconsistent value of HasRows. Fixes #348

Author: bgrainger

src/MySqlConnector/MySqlClient/Results/ResultSet.cs

@@ -228,6 +228,7 @@ Row ScanRowAsyncRemainder(PayloadData payload, Row row_)
 				row_.SetData(m_dataLengths, m_dataOffsets, payload.ArraySegment);
 				m_rowBuffered = row_;
 				m_hasRows = true;
+				BufferState = ResultSetState.ReadingRows;
 				return row_;
 			}
 		}

tests/SideBySide/QueryTests.cs

@@ -830,6 +830,38 @@ public void HasRows(int[] values, bool[] expecteds)
 			}
 		}
 
+		[Fact]
+		public void HasRowsRepeated()
+		{
+			m_database.Connection.Execute(@"drop table if exists has_rows;
+create table has_rows(value int not null);
+insert into has_rows(value) values(1),(2),(3);");
+
+			using (var cmd = m_database.Connection.CreateCommand())
+			{
+				cmd.CommandText = "select * from has_rows where value = 1;";
+				using (var reader = cmd.ExecuteReader())
+				{
+					Assert.True(reader.HasRows);
+					Assert.True(reader.HasRows);
+					Assert.True(reader.HasRows);
+					Assert.True(reader.HasRows);
+
+					Assert.True(reader.Read());
+
+					Assert.True(reader.HasRows);
+					Assert.True(reader.HasRows);
+					Assert.True(reader.HasRows);
+
+					Assert.False(reader.Read());
+
+					Assert.True(reader.HasRows);
+					Assert.True(reader.HasRows);
+					Assert.True(reader.HasRows);
+				}
+			}
+		}
+
 		class BoolTest
 		{
 			public int Id { get; set; }