private void SimpleSymlinkInputCheck(DateTime symlinkWriteTime, DateTime targetWriteTime,
DateTime outputWriteTime, bool expectedOutOfDate)
{
var inputs = new List <string>();
var outputs = new List <string>();
string inputTarget = "NONEXISTENT_FILE";
string inputSymlink = "NONEXISTENT_FILE";
string outputTarget = "NONEXISTENT_FILE";
try
{
inputTarget = FileUtilities.GetTemporaryFile();
_testOutputHelper.WriteLine($"Created input file {inputTarget}");
File.SetLastWriteTime(inputTarget, targetWriteTime);
inputSymlink = FileUtilities.GetTemporaryFile(null, ".linkin", createFile: false);
if (!CreateSymbolicLink(inputSymlink, inputTarget, 0))
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
// File.SetLastWriteTime on the symlink sets the target write time,
// so set the symlink's write time the hard way
using (SafeFileHandle handle =
NativeMethodsShared.CreateFile(
inputSymlink, NativeMethodsShared.GENERIC_READ | 0x100 /* FILE_WRITE_ATTRIBUTES */,
NativeMethodsShared.FILE_SHARE_READ, IntPtr.Zero, NativeMethodsShared.OPEN_EXISTING,
NativeMethodsShared.FILE_ATTRIBUTE_NORMAL | NativeMethodsShared.FILE_FLAG_OPEN_REPARSE_POINT,
IntPtr.Zero))
{
if (handle.IsInvalid)
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
long symlinkWriteTimeTicks = symlinkWriteTime.ToFileTimeUtc();
if (!SetFileTime(handle, ref symlinkWriteTimeTicks, ref symlinkWriteTimeTicks,
ref symlinkWriteTimeTicks))
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
}
_testOutputHelper.WriteLine($"Created input link {inputSymlink}");
outputTarget = FileUtilities.GetTemporaryFile();
_testOutputHelper.WriteLine($"Created output file {outputTarget}");
File.SetLastWriteTime(outputTarget, outputWriteTime);
inputs.Add(inputSymlink);
outputs.Add(outputTarget);
DependencyAnalysisLogDetail detail;
Assert.Equal(expectedOutOfDate,
TargetUpToDateChecker.IsAnyOutOfDate(out detail, Directory.GetCurrentDirectory(), inputs, outputs));
}
finally
{
if (File.Exists(inputTarget))
{
File.Delete(inputTarget);
}
if (File.Exists(inputSymlink))
{
File.Delete(inputSymlink);
}
if (File.Exists(outputTarget))
{
File.Delete(outputTarget);
}
}
}