public void CannotGetDirectoryThatDoesNotExist()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var isGetDirectorySuccess = _directoryController.TryGetDirectory("Test", root, out var target);
Assert.IsFalse(isGetDirectorySuccess);
Assert.IsNull(target);
}
private bool TryGetTargetDirectory(string targetDirectoryPath, out Directory targetDirectory, out string errorMessage)
{
// There are three options here - first is that this is an absolute path, which means that the first character is a path delimiter
if (_pathDelimiters.Contains(targetDirectoryPath.FirstOrDefault()))
{
var rootDirectory = _fileSystemState.GetRootDirectory();
return(TryGetTargetDirectory(rootDirectory, targetDirectoryPath, out targetDirectory, out errorMessage));
}
// Second is that this is a relative path, but begins with a `~` symbol, which means the home directory is the starting point of the path
if (_homeDirectorySymbol.Equals(targetDirectoryPath.FirstOrDefault().ToString(), StringComparison.InvariantCultureIgnoreCase))
{
var rootDirectory = _fileSystemState.GetRootDirectory();
var isGetHomeDirectorySuccess = _directoryController.TryGetDirectory("home", rootDirectory, out var homeDirectory);
return(TryGetTargetDirectory(homeDirectory, targetDirectoryPath, out targetDirectory, out errorMessage, ignoreFirstHomeSymbol: true));
}
// Third is that this is a relative path that does not begin with a `~` symbol, which means that the current directory is the starting point of the path
var currentDirectory = _fileSystemState.GetCurrentDirectory();
return(TryGetTargetDirectory(currentDirectory, targetDirectoryPath, out targetDirectory, out errorMessage));
}
private string ChangeDirectoryToHome()
{
var rootDirectory = _fileSystemState.GetRootDirectory();
var isGetHomeDirectorySuccess = _directoryController.TryGetDirectory(_homeDirectoryName, rootDirectory, out var homeDirectory);
if (!isGetHomeDirectorySuccess)
{
return($"Error - Failed to get `{_homeDirectoryName}` directory in `{rootDirectory.Name}`");
}
var isSetCurrentDirectoryAsHomeSuccess = _fileSystemState.TrySetCurrentDirectory(homeDirectory);
if (!isSetCurrentDirectoryAsHomeSuccess)
{
return($"Error - Failed to set current directory to `{_homeDirectoryName}` directory");
}
return($"Current working directory changed");
}
