private void UpdateSelectedFileDisplayName()
{
var selectedFile = SelectedFile;
if (string.IsNullOrWhiteSpace(selectedFile) || !System.IO.Path.IsPathRooted(selectedFile))
{
SelectedFileDisplayName = string.Empty;
return;
}
var baseDirectory = BaseDirectory;
if (string.IsNullOrWhiteSpace(baseDirectory) || !Directory.Exists(baseDirectory))
{
SelectedFileDisplayName = selectedFile;
return;
}
var selectedFileRoot = System.IO.Path.GetPathRoot(selectedFile);
var baseDirectoryRoot = System.IO.Path.GetPathRoot(baseDirectory);
if (!string.Equals(selectedFileRoot, baseDirectoryRoot, StringComparison.OrdinalIgnoreCase))
{
SelectedFileDisplayName = selectedFile;
return;
}
SelectedFileDisplayName = Path.GetRelativePath(selectedFile, baseDirectory);
}
public void GetRelativePath_DifferentRoot()
{
// Declare variables
string file = @"C:\Windows\notepad.exe";
string path = @"D:\Windows\";
// Call method
string relative = Path.GetRelativePath(file, path);
// Validate
Assert.AreEqual(@"C:\Windows\notepad.exe".ToLower(), relative.ToLower());
}
public void GetRelativePath_HigherDirectory()
{
// Declare variables
string file = @"C:\Windows\";
string path = @"C:\Windows\Level1\Level2";
// Call method
string relative = Path.GetRelativePath(file, path);
// Validate
Assert.AreEqual(@"..\..".ToLower(), relative.ToLower());
}
public void GetRelativePath_SameDirectoryLevelWithDifferentName()
{
// Declare variables
string file = @"C:\Windows\MyTest\MyFile.exe";
string path = @"C:\Windows\MyTes";
// Call method
string relative = Path.GetRelativePath(file, path);
// Validate
Assert.AreEqual(@"..\MyTest\MyFile.exe".ToLower(), relative.ToLower());
}
public void GetRelativePath_DeeperDirectory()
{
// Declare variables
string file = @"C:\Windows\notepad.exe";
string path = @"C:\Windows\Temp\";
// Call method
string relative = Path.GetRelativePath(file, path);
// Validate
Assert.AreEqual(@"..\notepad.exe".ToLower(), relative.ToLower());
}
public void GetRelativePath_SingleDirectoryNotEndingWithSlash()
{
// Declare variables
string file = @"C:\Windows\notepad.exe";
string path = @"C:\Windows";
// Call method
string relative = Path.GetRelativePath(file, path);
// Validate
Assert.AreEqual(@"notepad.exe".ToLower(), relative.ToLower());
}
public void GetRelativePath_EmptyBasePath()
{
// Get current directory
string currentWorkingDirectory = Environment.CurrentDirectory;
Environment.CurrentDirectory = @"C:\Windows\System32";
// Declare variables
string file = @"C:\Windows\MyTest\MyFile.exe";
// Call method
string relative = Path.GetRelativePath(file);
// Validate
Assert.AreEqual(@"..\MyTest\MyFile.exe".ToLower(), relative.ToLower());
// Restore current working directory
Environment.CurrentDirectory = currentWorkingDirectory;
}
public void GetRelativePath_InvalidInput()
{
ExceptionTester.CallMethodAndExpectException <ArgumentException>(() => Path.GetRelativePath(null, @"C:\test\"));
}