private string ChangeDirectoryToRoot(string targetDirectoryName)
{
var rootDirectory = _fileSystemState.GetRootDirectory();
var isRootDirectorySetSuccess = _fileSystemState.TrySetCurrentDirectory(rootDirectory);
if (!isRootDirectorySetSuccess)
{
return($"Error - Failed to set current directory to root `{targetDirectoryName}`");
}
return("Current working directory changed");
}
public string ExecuteCommand(params string[] args)
{
// Validate the arguments to the command
if (!TryValidateArguments(out var validationResponse, args))
{
return(validationResponse);
}
// Execute the valid command logic
var targetPlanetName = args.LastOrDefault();
// Try to initialize a new directory for this planet
var rootDirectory = _fileSystemState.GetRootDirectory();
var planetPermission = _permissionController.GetCustomPermission(canRead: true, canExecute: true);
var isAddPlanetDirectorySuccess = _directoryController.TryAddDirectory(targetPlanetName, planetPermission, rootDirectory, out var targetPlanetDirectory);
if (!isAddPlanetDirectorySuccess)
{
return($"Error - Failed to initialize planet `{targetPlanetName}`");
}
// Once we know we have a planet folder initialized, set it up with all the needed sub-directories for a planet
// TODO - Setup the sub-directories for a planet
return(null);
}
public void RootDirectoryDoesNotHaveParentDirectory()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
Assert.IsNull(root.ParentDirectory);
}
public void NewStateHasRootDirectory()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
Assert.IsNotNull(root);
}
public void RootDirectoryHasExecuteAccess()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var rootAccess = _permissionController.GetPermissions(root);
Assert.IsTrue(rootAccess.Execute);
}
public void RootDirectoryDoesNotHaveWriteAccess()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var rootAccess = _permissionController.GetPermissions(root);
Assert.IsFalse(rootAccess.Write);
}
public void FilesInDirectoryDoNotExistUntilCreated()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
Assert.IsNotNull(root.FilesInDirectory);
Assert.IsEmpty(root.FilesInDirectory);
}
public void RootDirectoryStartsWithNoFiles()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
Assert.IsNotNull(root.FilesInDirectory);
Assert.IsEmpty(root.FilesInDirectory);
}
public void NewStateRootDirectoryIsNotCurrentDirectory()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var current = state.GetCurrentDirectory();
Assert.AreNotEqual(root, current);
}
public void CannotDeleteDirectoryThatDoesNotExist()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var isDeleteDirectorySuccess = _directoryController.TryDeleteDirectory("Test", root);
Assert.IsFalse(isDeleteDirectorySuccess);
}
public void CannotDeleteFileThatDoesNotExist()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var isDeleteFileSuccess = _fileController.TryDeleteFile("Test", FileExtension.None, root);
Assert.IsFalse(isDeleteFileSuccess);
}
public void CurrentDirectoryStartsWithRootParentDirectory()
{
var state = new FileSystemState();
var current = state.GetCurrentDirectory();
var root = state.GetRootDirectory();
Assert.IsNotNull(current.ParentDirectory);
Assert.AreEqual(current.ParentDirectory, root);
}
public void NewStateHasRootDirectoryNamedSlash()
{
var state = new FileSystemState();
var expected = "/";
var root = state.GetRootDirectory();
Assert.IsNotNull(root);
Assert.AreEqual(root.Name, expected);
}
public void HomeDirectoryHasRootParentDirectory()
{
var state = new FileSystemState();
var home = state.GetHomeDirectory();
var root = state.GetRootDirectory();
Assert.IsNotNull(home.ParentDirectory);
Assert.AreEqual(home.ParentDirectory, root);
}
public void CreatedDirectoryHasParentDirectory()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var isAddDirectorySuccess = _directoryController.TryAddDirectory("Test", new Permission(), root, out var testDirectory);
Assert.IsTrue(isAddDirectorySuccess);
Assert.AreEqual(testDirectory.ParentDirectory, root);
}
public void HomeSubDirectoryExistsOnCreation()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
Assert.IsNotNull(root.SubDirectories);
Assert.IsNotEmpty(root.SubDirectories);
Assert.AreEqual(root.SubDirectories.Count, 1);
Assert.AreEqual(root.SubDirectories.FirstOrDefault().Name, "home");
}
public void RootDirectoryPathIsDirectoryName()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var path = _directoryController.GetDirectoryPath(root);
var expectedPath = "/";
Assert.AreEqual(path, expectedPath);
}
public void CanGetCurrentDirectory()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var isGetDirectorySuccess = _directoryController.TryGetDirectory(".", root, out var target);
Assert.IsTrue(isGetDirectorySuccess);
Assert.AreEqual(target, root);
}
public void CannotGetParentDirectoryOfRootDirectory()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var isGetDirectorySuccess = _directoryController.TryGetDirectory("..", root, out var target);
Assert.IsFalse(isGetDirectorySuccess);
Assert.IsNull(target);
}
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);
}
public void CanDeleteFileThatExists()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var isAddFileSuccess = _fileController.TryAddFile("Test", FileExtension.None, new Permission(), root, out var addedFile);
var isDeleteFileSuccess = _fileController.TryDeleteFile("Test", FileExtension.None, root);
Assert.IsTrue(isAddFileSuccess);
Assert.IsTrue(isDeleteFileSuccess);
}
public void SubDirectoriesExistWhenCreated()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var isAddDirectorySuccess = _directoryController.TryAddDirectory("Test", new Permission(), root, out var testDirectory);
Assert.IsTrue(isAddDirectorySuccess);
Assert.IsNotNull(root.SubDirectories);
Assert.That(root.SubDirectories.Contains(testDirectory));
}
public void CanDeleteDirectoryThatExists()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var isAddDirectorySuccess = _directoryController.TryAddDirectory("Test", new Permission(), root, out var addedDirectory);
var isDeleteDirectorySuccess = _directoryController.TryDeleteDirectory("Test", root);
Assert.IsTrue(isAddDirectorySuccess);
Assert.IsTrue(isDeleteDirectorySuccess);
}
public void DirectoryPathIncludesRootDirectory()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var childDirectory = new Directory
{
Name = "Child",
ParentDirectory = root
};
var path = _directoryController.GetDirectoryPath(childDirectory);
var expectedPath = "/Child";
Assert.AreEqual(path, expectedPath);
}
public void HomeDirectoryPathIsShortened()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
var homeDirectory = new Directory
{
Name = "home",
ParentDirectory = root
};
var path = _directoryController.GetDirectoryPath(homeDirectory);
var expectedPath = "~";
Assert.AreEqual(path, expectedPath);
}
public void FilesInDirectoryExistWhenCreated()
{
var state = new FileSystemState();
var root = state.GetRootDirectory();
// Need to store the boolean we want to test directly rather than the state
// This is because the underlying state will change but the reference pointer will not, leading to incorrect testing behavior
var isFilesInDirectoryNullBeforeAdd = root.FilesInDirectory == null;
var isFilesInDirectoryPopulatedBeforeAdd = root.FilesInDirectory.Any();
var isAddFileSuccess = _fileController.TryAddFile("Test", FileExtension.None, new Permission(), root, out var testFile);
Assert.IsTrue(isAddFileSuccess);
Assert.IsFalse(isFilesInDirectoryNullBeforeAdd);
Assert.IsFalse(isFilesInDirectoryPopulatedBeforeAdd);
Assert.IsNotNull(root.FilesInDirectory);
Assert.That(root.FilesInDirectory.Contains(testFile));
}
public void InitializeCommandsInFileSystemState(
FileSystemState fileSystemState,
PermissionController permissionController,
DirectoryController directoryController,
FileController fileController,
IList <string> commandNames)
{
var root = fileSystemState.GetRootDirectory();
var binDirectoryPermission = permissionController.GetCustomPermission(canRead: true, canExecute: true);
var isAddBinDirectorySuccess = directoryController.TryAddDirectory("bin", binDirectoryPermission, root, out var binDirectory);
Debug.Assert(isAddBinDirectorySuccess, $"Failed to add `bin` directory under `{root.Name}` directory");
foreach (var commandName in commandNames)
{
var filePermission = permissionController.GetCustomPermission(canExecute: true);
var isAddCommandFileSuccess = fileController.TryAddFile(commandName, FileExtension.exe, filePermission, binDirectory, out _);
Debug.Assert(isAddCommandFileSuccess, $"Failed to add `{commandName}{FileExtension.exe.ToString()}` file under `{binDirectory.Name}` directory");
}
}
public string ExecuteCommand(params string[] args)
{
// Validate the arguments to the command
if (!TryValidateArguments(out var validationResponse, args))
{
return(validationResponse);
}
// Extract the arguments and flags
string targetDirectoryName = null;
bool showHiddenFiles = false;
bool showFileListView = false;
// Ignore the first parameter because we know it is the command name since validation succeeded
for (var i = 1; i < args.Length; i++)
{
if (args[i].StartsWith(_flagParameterStartingCharacter.ToString(), StringComparison.InvariantCultureIgnoreCase))
{
// Loop through all the flags provided like `-abcdefg` and extract each one as necessary
var shortOptions = args[i];
shortOptions = shortOptions.TrimStart(_flagParameterStartingCharacter);
foreach (var shortOption in shortOptions)
{
if (shortOption.Equals(_showHiddenFilesFlag))
{
showHiddenFiles = true;
}
else if (shortOption.Equals(_showFileListViewFlag))
{
showFileListView = true;
}
else
{
return($"Error - Unknown flag provided to `{GetCommandName()}`: `{shortOption}`");
}
}
}
else
{
targetDirectoryName = args[i];
}
}
// Execute the valid command logic
Directory targetDirectory = null;
// Handle the special case where the user wants to list the contents of the `/` or '\' directory (root)
if (targetDirectoryName != null && targetDirectoryName.Length == 1 && _pathDelimiters.Contains(targetDirectoryName.FirstOrDefault()))
{
targetDirectory = _fileSystemState.GetRootDirectory();
}
// Handle the special case where the user wants to list the contents of the `.` directory (current directory)
if (targetDirectoryName != null && targetDirectoryName.Equals(_currentDirectorySymbol, StringComparison.InvariantCultureIgnoreCase))
{
targetDirectory = _fileSystemState.GetCurrentDirectory();
}
// Handle the special case where the user wants to change directory to `..` (parent directory)
if (targetDirectoryName != null && targetDirectoryName.Equals(_parentDirectorySymbol, StringComparison.InvariantCultureIgnoreCase))
{
var currentDirectory = _fileSystemState.GetCurrentDirectory();
targetDirectory = currentDirectory.ParentDirectory;
if (targetDirectory == null)
{
return($"Error - Failed to find parent directory for `{currentDirectory.Name}`");
}
}
// Handle the special case where the user has supplied a directory name or path they wish to see the contents of
if (targetDirectoryName != null)
{
var isGetDirectorySuccess = TryGetTargetDirectory(targetDirectoryName, out targetDirectory, out var errorMessage);
if (!isGetDirectorySuccess)
{
return(errorMessage);
}
}
// At this point, if we do not already have a target directory, the user did not specify a target directory to see its contents
// If that is the case, use the "default" target directory - the current working directory
if (targetDirectory == null)
{
targetDirectory = _fileSystemState.GetCurrentDirectory();
}
// If the user specified that they want to see the long list view, show them that view
if (showFileListView)
{
return(FormatDirectoryContentsForLongView(targetDirectory, showHiddenFiles));
}
// Otherwise, show them the default view
return(FormatDirectoryContents(targetDirectory, showHiddenFiles));
}