public virtual void BeginTransaction()
{
using (HsqlConnection testSubject = new HsqlConnection())
{
testSubject.Open();
using (HsqlTransaction transaction = testSubject.BeginTransaction())
{
}
}
object[] expected = new object[]
{
IsolationLevel.Chaos, false,
IsolationLevel.ReadCommitted, true,
IsolationLevel.ReadUncommitted, true,
IsolationLevel.RepeatableRead, true,
IsolationLevel.Serializable, true,
IsolationLevel.Snapshot, true,
IsolationLevel.Unspecified, true
};
IsolationLevel isolationLevel;
bool isolationLevelIsSupported;
for (int i = 0; i < expected.Length; i += 2)
{
isolationLevel = (IsolationLevel)expected[i];
isolationLevelIsSupported = (bool) expected[i+1];
TestBeginTransaction(isolationLevel, isolationLevelIsSupported);
}
}
public virtual void ChangeDatabase()
{
using (HsqlConnection testSubject = new HsqlConnection("DataSource=mem:test2"))
{
string databaseName = "test1";
testSubject.ChangeDatabase(databaseName);
testSubject.Open();
}
using (HsqlConnection testSubject = new HsqlConnection("DataSource=mem:test2"))
{
testSubject.Open();
string databaseName = "test1";
try
{
testSubject.ChangeDatabase(databaseName);
Assert.Fail("it is not expected that it is legal to change database while a connection is open.");
}
catch (Exception)
{
}
}
}
void TestBeginTransaction(IsolationLevel isolationLevel, bool isolationLevelIsSupported)
{
try
{
using (HsqlConnection testSubject = new HsqlConnection())
{
testSubject.Open();
using (HsqlTransaction transaction = testSubject.BeginTransaction(isolationLevel))
{
}
}
Assert.That(isolationLevelIsSupported,
"System.Data.IsolationLevel: " + Enum.GetName(typeof(IsolationLevel),
isolationLevel));
}
catch (Exception)
{
Assert.That(!isolationLevelIsSupported,
"System.Data.IsolationLevel: " + Enum.GetName(typeof(IsolationLevel),
isolationLevel));
}
}
public virtual void Open()
{
using (HsqlConnection testSubject = new HsqlConnection())
{
testSubject.Open();
try
{
testSubject.Open();
Assert.Fail("A second Open() invocation should not succeed when a connection is already open.");
}
catch (Exception)
{
}
}
}
public virtual void EnlistTransaction()
{
HsqlConnection testSubject = new HsqlConnection();
using (TransactionScope transactionScope = new TransactionScope(TransactionScopeOption.Required))
{
testSubject.Open();
testSubject.EnlistTransaction(Transaction.Current);
try
{
testSubject.BeginTransaction();
Assert.Fail("The test subject allowed a local transaction to be started "
+ "explicitly while participating in a system transaction");
}
catch (Exception)
{
}
transactionScope.Complete();
try
{
testSubject.BeginTransaction();
Assert.Fail("The test subject allowed a local transaction to be started "
+ "explicitly while participating in a system transaction");
}
catch (Exception)
{
}
}
using (HsqlTransaction transaction = testSubject.BeginTransaction())
{
transaction.Commit();
}
}
public virtual void Close()
{
using (HsqlConnection testSubject = new HsqlConnection())
{
Assert.That(testSubject.State == ConnectionState.Closed);
testSubject.Open();
Assert.That(testSubject.State == ConnectionState.Open);
testSubject.Close();
Assert.That(testSubject.State == ConnectionState.Closed);
testSubject.Close();
Assert.That(testSubject.State == ConnectionState.Closed);
}
}
/// <summary>
/// Returns the collection of currently valid initial schema names,
/// given the specified context.
/// </summary>
/// <param name="context">
/// An <see cref="ITypeDescriptorContext"></see> whose <c>Instance</c>
/// property supplies the <c>HsqlConnectionStringBuilder</c> use to
/// connect to a data source to retrieve the currently valid initial
/// schema names.
/// </param>
/// <returns>
/// A <see cref="TypeConverter.StandardValuesCollection"/> that holds
/// collection of currently valid initial schema names.
/// </returns>
public override TypeConverter.StandardValuesCollection GetStandardValues(
ITypeDescriptorContext context)
{
if (!IsStandardValuesSupported(context))
{
return null;
}
List<string> values = new List<string>();
try
{
HsqlConnectionStringBuilder builder
= (HsqlConnectionStringBuilder)context.Instance;
// TODO: this is sub-optimal, but is currently the best (only?)
// solution to the problem of how to avoid creating and/or
// leaving open embedded database instances.
if (IsEmbeddedProtocol(builder))
{
builder = new HsqlConnectionStringBuilder(
builder.ConnectionString);
builder.AutoShutdown = true;
builder.IfExists = true;
}
using (HsqlConnection connection = new HsqlConnection())
{
connection.ConnectionString = builder.ConnectionString;
using (HsqlCommand command = new HsqlCommand(
connection,
SchemaQuery))
{
connection.Open();
using (HsqlDataReader reader = command.ExecuteReader())
{
while (reader.Read())
{
values.Add(reader.GetString(0));
}
}
}
}
}
catch (Exception exception)
{
#if DEBUG
Debug.WriteLine(exception);
#endif
}
return new TypeConverter.StandardValuesCollection(values);
}
