public void GetRelativePath() {
Assert.AreEqual(@"system32\a.exe",
FileUtils.GetRelativePath(@"C:\Windows\system32\a.exe", @"C:\Windows"));
Assert.AreEqual(@"system32\a.exe",
FileUtils.GetRelativePath(@"C:\Windows\system32\a.exe", @"C:\Windows\"));
Assert.AreEqual(@"system32\a.exe",
FileUtils.GetRelativePath(@"C:\Windows\system32\a.exe", @"C:/Windows"));
Assert.AreEqual(@"C:\Windows\system32\a.exe",
FileUtils.GetRelativePath(@"C:\Windows\system32\a.exe", @"C:\Windows\s"));
}