File: SqliteConnectionTest.cs

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// SqliteConnectionTest.cs - NUnit Test Cases for SqliteConnection
//
// Authors:
//   Sureshkumar T <tsureshkumar@novell.com>
// 

//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//


using System;
using System.Data;
using System.IO;
using Mono.Data.Sqlite;

using NUnit.Framework;

namespace MonoTests.Mono.Data.Sqlite
{
	[TestFixture]
	public class SqliteConnectionTest
	{
		string _dataFolder;
		string _uri;
		string _connectionString;
		SqliteConnection _conn;

		[SetUp]
		public void SetUp ()
		{
			_dataFolder = Path.GetTempFileName ();
			if (File.Exists (_dataFolder))
				File.Delete (_dataFolder);
			Directory.CreateDirectory (_dataFolder);

			_uri = Path.Combine (_dataFolder, "test.db");
			_connectionString = "URI=file://" + _uri + ", version=3";
			_conn = new SqliteConnection ();
		}

		[TearDown]
		public void TeatDown ()
		{
			if (Directory.Exists (_dataFolder))
				Directory.Delete (_dataFolder, true);
		}
		[Test]
		public void ReleaseDatabaseFileHandles ()
		{
			_conn.ConnectionString = _connectionString;
			_conn.Open ();
			
			SqliteCommand cmd = _conn.CreateCommand ();
			cmd.CommandText = "PRAGMA legacy_file_format;";
			cmd.ExecuteScalar ();
			
			// close connection before the command
			_conn.Dispose ();
			
			// then close the command
			cmd.Dispose ();
			
			// the locks should be released, and we should be able to delete the database
			File.Delete (_uri);
		}

		[Test]
		[ExpectedException (typeof (ArgumentNullException))]
		public void ConnectionStringTest_Null ()
		{
			_conn.ConnectionString = null;
		}

		[Test]
		[ExpectedException (typeof (InvalidOperationException))]
		public void ConnectionStringTest_MustBeClosed ()
		{
			_conn.ConnectionString = _connectionString;
			try {
				_conn.Open ();
				_conn.ConnectionString = _connectionString;
			} finally {
				_conn.Close ();
			}
		}

		// behavior has changed, I guess
		//[Test]
		[Ignore ("opening a connection should not create db! though, leave for now")]
		public void OpenTest ()
		{
			try {
				_conn.ConnectionString = _connectionString;
				_conn.Open ();
				Assert.AreEqual (ConnectionState.Open, _conn.State, "#1 not opened");
				_conn.Close ();

				// negative test: try opening a non-existent file
				_conn.ConnectionString = "URI=file://abcdefgh.db, version=3";
				try {
					_conn.Open ();
					Assert.Fail ("#1 should have failed on opening a non-existent db");
				} catch (ArgumentException e) {Console.WriteLine (e);}
								
			} finally {
				if (_conn != null && _conn.State != ConnectionState.Closed)
					_conn.Close ();
			}
		}

	}
}