Verify that invalid SQL throws the right exception.

Author: bgrainger

src/MySqlConnector/MySqlClient/MySqlErrorCode.cs

@@ -0,0 +1,13 @@
+namespace MySql.Data.MySqlClient
+{
+	/// <summary>
+	/// MySQL Server error codes. Taken from <a href="https://dev.mysql.com/doc/refman/5.7/en/error-messages-server.html">Server Error Codes and Messages</a>.
+	/// </summary>
+	public enum MySqlErrorCode
+	{
+		/// <summary>
+		/// You have an error in your SQL syntax (ER_PARSE_ERROR).
+		/// </summary>
+		ParseError = 1064,
+	}
+}

tests/SideBySide/QueryTests.cs

@@ -84,9 +84,37 @@ public async Task InvalidSql()
 			using (var cmd = m_database.Connection.CreateCommand())
 			{
 				cmd.CommandText = @"select id from query_invalid_sql limit 1 where id is not null";
-				await Assert.ThrowsAsync<MySqlException>(() => cmd.ExecuteNonQueryAsync());
-				await Assert.ThrowsAsync<MySqlException>(() => cmd.ExecuteReaderAsync());
-				await Assert.ThrowsAsync<MySqlException>(() => cmd.ExecuteScalarAsync());
+				try
+				{
+					await cmd.ExecuteNonQueryAsync();
+					Assert.True(false, "Exception should have been thrown.");
+				}
+				catch (MySqlException ex)
+				{
+					Assert.Equal((int) MySqlErrorCode.ParseError, ex.Number);
+				}
+
+				try
+				{
+					using (var reader = await cmd.ExecuteReaderAsync())
+					{
+					}
+					Assert.True(false, "Exception should have been thrown.");
+				}
+				catch (MySqlException ex)
+				{
+					Assert.Equal((int) MySqlErrorCode.ParseError, ex.Number);
+				}
+
+				try
+				{
+					await cmd.ExecuteScalarAsync();
+					Assert.True(false, "Exception should have been thrown.");
+				}
+				catch (MySqlException ex)
+				{
+					Assert.Equal((int) MySqlErrorCode.ParseError, ex.Number);
+				}
 			}
 
 			using (var cmd = m_database.Connection.CreateCommand())