/// <summary>
/// Verifies no instances are leaked.
/// </summary>
public static void CheckProcessForInstanceLeaks()
{
#if !MANAGEDESENT_ON_WSA // Not exposed in MSDK
int numInstances;
JET_INSTANCE_INFO[] instances;
Api.JetGetInstanceInfo(out numInstances, out instances);
if (numInstances != 0)
{
IsamTestHelper.ConsoleWriteLine("There are {0} instances remaining! They are:", numInstances);
foreach (var instanceInfo in instances)
{
string databaseName = string.Empty;
if (instanceInfo.szDatabaseFileName != null && instanceInfo.szDatabaseFileName.Count > 0)
{
databaseName = instanceInfo.szDatabaseFileName[0];
}
IsamTestHelper.ConsoleWriteLine(
" szInstanceName={0}, szDatabaseName={1}",
instanceInfo.szInstanceName,
databaseName);
}
}
Assert.AreEqual(0, numInstances);
#endif // !MANAGEDESENT_ON_WSA
}
/// <summary>
/// Creates a new random directory in the current working directory. This
/// should be used to ensure that each test runs in its own directory.
/// </summary>
/// <returns>The name of the directory.</returns>
public static string CreateRandomDirectory()
{
string myDir = IsamTestHelper.PathGetRandomFileName() + @"\";
IsamTestHelper.DirectoryCreateDirectory(myDir);
return(myDir);
}
/// <summary>
/// Perform an action and retry on I/O failure, with a 1 second
/// sleep between retries.
/// </summary>
/// <param name="action">The action to perform.</param>
private static void PerformActionWithRetry(Action action)
{
for (int attempt = 1; attempt <= MaxAttempts; ++attempt)
{
try
{
action();
return;
}
catch (UnauthorizedAccessException)
{
if (MaxAttempts == attempt)
{
throw;
}
}
catch (IOException)
{
if (MaxAttempts == attempt)
{
throw;
}
}
IsamTestHelper.ThreadSleep(TimeSpan.FromSeconds(1));
}
}
/// <summary>
/// Delete a directory, retrying the operation if the delete fails.
/// </summary>
/// <param name="directory">
/// The directory to delete.
/// </param>
public static void DeleteDirectoryWithRetry(string directory)
{
PerformActionWithRetry(
() =>
{
if (IsamTestHelper.DirectoryExists(directory))
{
IsamTestHelper.DirectoryDelete(directory, true);
}
});
}
/// <summary>
/// Delete a file, retrying the operation if the delete fails.
/// </summary>
/// <param name="file">
/// The file to delete.
/// </param>
public static void DeleteFileWithRetry(string file)
{
PerformActionWithRetry(() => IsamTestHelper.FileDelete(file));
}