DbConnectionTests.cs

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// 
//  Copyright 2010-2014 Deveel
// 
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
// 
//        http://www.apache.org/licenses/LICENSE-2.0
// 
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.
using System;
using System.Data;

using NUnit.Framework;

namespace Deveel.Data.Client {
    [TestFixture]
    public sealed class DbConnectionTests : ContextBasedTest {
        [Test]
        public void OpenForAdmin() {
            IDbConnection connection = null;
            Assert.DoesNotThrow(() => connection = Database.CreateDbConnection(AdminUserName, AdminPassword));
            Assert.IsNotNull(connection);

            Assert.AreEqual(ConnectionState.Closed, connection.State);
            Assert.DoesNotThrow(() => connection.Open());
            Assert.AreEqual(ConnectionState.Open, connection.State);
            Assert.DoesNotThrow(() => connection.Close());
            Assert.AreEqual(ConnectionState.Closed, connection.State);
        }

        [Test]
        public void QueryScalarForAdmin() {
            IDbConnection connection = null;
            Assert.DoesNotThrow(() => connection = Database.CreateDbConnection(AdminUserName, AdminPassword));
            Assert.IsNotNull(connection);

            IDbCommand command = null;
            Assert.DoesNotThrow(() => command = connection.CreateCommand());
            Assert.IsNotNull(command);

            command.CommandText = "SELECT user()";

            object value = null;
            Assert.DoesNotThrow(() => value = command.ExecuteScalar());
            Assert.IsNotNull(value);
            Assert.IsInstanceOf<string>(value);
            Assert.AreEqual(AdminUserName, value);

            Assert.DoesNotThrow(() => connection.Dispose());
        }

        [Test]
        public void QueryForAdmin() {
            IDbConnection connection = null;
            Assert.DoesNotThrow(() => connection = Database.CreateDbConnection(AdminUserName, AdminPassword));
            Assert.IsNotNull(connection);

            IDbCommand command = null;
            Assert.DoesNotThrow(() => command = connection.CreateCommand());
            Assert.IsNotNull(command);

            command.CommandText = "SELECT user()";

            IDataReader reader = null;
            Assert.DoesNotThrow(() => reader = command.ExecuteReader());
            Assert.IsNotNull(reader);
            Assert.AreEqual(1, reader.FieldCount);
            Assert.IsTrue(reader.Read());

            object value = null;
            Assert.DoesNotThrow(() => value = reader.GetValue(0));
            Assert.IsInstanceOf<string>(value);
        }
    }
}