internal static void CurrentTransactionIsNull()
{
#if DEBUG
Console.WriteLine("CurrentTransactionIsNull");
#endif
var managedPath =
"Data" +
Path.DirectorySeparatorChar +
"create-file-is-new-no-current-transaction.txt";
var manager = new CreateNonEmptyFileManager(
managedPath, overwrite: true);
FileStream stream = (FileStream)FileManagerReflection.Invoke(
manager,
"OnPrepareFileStream",
new string[] { managedPath });
ExceptionAssert.IsThrown(
() => { manager.EnlistVolatile(EnlistmentOptions.None); },
expectedType: typeof(InvalidOperationException),
expectedMessage: String.Format(
"Cannot enlist resource {0}: no ambient transaction detected.",
managedPath));
}
/// <summary>
/// Tests the constructor when parameter <i>managedPath</i> is <b>null</b>.
/// </summary>
public static void ManagedPathIsNull()
{
#if DEBUG
Console.WriteLine("Constructor_ManagedPathIsNull");
#endif
string managedPath = null;
ArgumentExceptionAssert.IsThrown(
() => { var manager = new CreateNonEmptyFileManager(managedPath, overwrite: true); },
expectedType: typeof(ArgumentNullException),
expectedPartialMessage: ArgumentExceptionAssert.NullPartialMessage,
expectedParameterName: "managedPath");
}
public static void Dispose(bool overwrite)
{
#if DEBUG
Console.WriteLine("Dispose");
#endif
string managedPath =
overwrite
?
"Data" +
Path.DirectorySeparatorChar +
"create-file-is-new-dispose.txt"
:
"Data" +
Path.DirectorySeparatorChar +
"create-file-is-new-dispose-cannot-overwrite.txt";
// Assure that the managed file is new
// in case of overwrite: false
if (!overwrite)
{
File.Delete(managedPath);
}
// Simulate a preparation
var manager = new CreateNonEmptyFileManager(
managedPath, overwrite: overwrite);
Assert.AreEqual(false, FileManagerReflection.GetField(manager, "disposed"));
FileStream stream = (FileStream)FileManagerReflection.Invoke(
manager,
"OnPrepareFileStream",
new string[] { managedPath });
FileManagerReflection.SetStream(manager, stream);
stream = null;
// Dispose the manager
manager.Dispose();
// Expected results
Assert.AreEqual(true, FileManagerReflection.GetField(manager, "disposed"));
// Dispose the manager, again
ExceptionAssert.IsNotThrown(
() => { manager.Dispose(); }
);
}
public static void OnRollbackNoScope()
{
#if DEBUG
Console.WriteLine("FileAlreadyExists_OnRollbackNoScope");
#endif
var managedPath =
"Data" +
Path.DirectorySeparatorChar +
"create-file-already-exists-on-rollback-no-scope.txt";
// Simulate a preparation
bool overwrite = true;
var manager = new CreateNonEmptyFileManager(
managedPath, overwrite: overwrite);
FileStream stream = (FileStream)FileManagerReflection.Invoke(
manager,
"OnPrepareFileStream",
new string[] { managedPath });
FileManagerReflection.SetStream(manager, stream);
stream = null;
Assert.AreEqual(overwrite, manager.CanOverwrite);
Assert.AreEqual(true, manager.FileAlreadyExists);
// Simulate a rollback
FileManagerReflection.Invoke(
manager,
"OnRollback",
null);
// Expected results
Assert.IsTrue(File.Exists(managedPath));
using (stream = File.OpenRead(managedPath))
{
using (StreamReader reader = new StreamReader(stream))
{
var content = reader.ReadLine();
Assert.AreEqual("existing-file", content);
}
}
}
public static void OnRollbackNoScope(bool overwrite)
{
#if DEBUG
Console.WriteLine("FileIsNew_OnRollbackNoScope");
#endif
var managedPath =
"Data" +
Path.DirectorySeparatorChar +
"create-file-is-new-on-rollback-no-scope.txt";
// Simulate a preparation
var manager = new CreateNonEmptyFileManager(
managedPath, overwrite: overwrite);
FileStream stream = (FileStream)FileManagerReflection.Invoke(
manager,
"OnPrepareFileStream",
new string[] { managedPath });
FileManagerReflection.SetStream(manager, stream);
stream = null;
Assert.AreEqual(overwrite, manager.CanOverwrite);
Assert.AreEqual(false, manager.FileAlreadyExists);
// Simulate a rollback
FileManagerReflection.Invoke(
manager,
"OnRollback",
null);
// Expected results
// Dispose the manager, so that
// the following call to File.Exists
// has the required permissions
// to investigate the managed file.
manager.Dispose();
Assert.IsTrue(!File.Exists(managedPath));
}
public static void OnCommit(bool overwrite)
{
#if DEBUG
Console.WriteLine("FileIsNew_OnCommit");
#endif
var managedPath =
"Data" +
Path.DirectorySeparatorChar +
"create-file-is-new-on-commit.txt";
var createManager = new CreateNonEmptyFileManager(
managedPath, overwrite: overwrite);
List <FileManager> managers = new List <FileManager>
{
createManager
};
void results()
{
Assert.IsTrue(File.Exists(managedPath));
using (Stream stream = File.OpenRead(managedPath))
{
using (BinaryReader reader = new BinaryReader(stream))
{
var content = reader.ReadString();
Assert.AreEqual(createManager.ContentWrittenOnCreation, content);
}
}
}
void rolledBack(Exception e)
{
}
TransactionScopeHelper.Using(
managers,
results,
rolledBack);
}