public void ReOpenFileSuccess()
{
string path = Path.Combine(TemporaryDirectory, "file");
using (var stream = new FileStream(path, FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite))
{
SafeFileHandle writableHandle;
ReOpenFileStatus status = FileUtilities.TryReOpenFile(
stream.SafeFileHandle,
FileDesiredAccess.GenericWrite,
FileShare.ReadWrite,
FileFlagsAndAttributes.None,
out writableHandle);
using (writableHandle)
{
XAssert.AreEqual(ReOpenFileStatus.Success, status);
XAssert.IsNotNull(writableHandle);
XAssert.IsFalse(writableHandle.IsInvalid);
using (var writableStream = new FileStream(writableHandle, FileAccess.Write, bufferSize: 128, isAsync: false))
{
writableStream.WriteByte(0xab);
}
}
int read = stream.ReadByte();
XAssert.AreEqual(0xab, read);
}
}
public void ReOpenFileSharingViolation()
{
string path = Path.Combine(TemporaryDirectory, "file");
using (var stream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read))
{
SafeFileHandle writableHandle;
ReOpenFileStatus status = FileUtilities.TryReOpenFile(
stream.SafeFileHandle,
FileDesiredAccess.GenericWrite,
FileShare.ReadWrite,
FileFlagsAndAttributes.None,
out writableHandle);
using (writableHandle)
{
XAssert.AreEqual(ReOpenFileStatus.SharingViolation, status);
XAssert.IsNull(writableHandle);
}
}
}
