Example how to work with SafeFileHandle in the MockFileSystem.
In order to be able to support SafeFileHandle, the MockFileSystem provides a ISafeFileHandleStrategy
that can be set via MockFileSystem.WithSafeFileHandleStrategy(...) and which maps a SafeFileHandle fileHandle
to a SafeFileHandleMock.
This object points to a location in the MockFileSystem instead.
The included default implementation uses a callback to map SafeFileHandle to a SafeFileHandleMock.
The example illustrates how to create a custom implementation of the ISafeFileHandleStrategy which stores the
mapping internally and synchronizes the attributes, creation time, last access time and last write time on access
from the real file system to the mock file system.
A test case verifies, that the last access time from the real file system is returned when using the safe file handle on the mock file system:
ISafeFileHandleStrategy strategy = new CustomSafeFileHandleStrategy(...);
MockFileSystem mockFileSystem = new MockFileSystem()
.WithSafeFileHandleStrategy(strategy)
SafeFileHandle fileHandle = UnmanagedFileLoader.CreateSafeFileHandle(pathToFileOnRealFileSystem);
DateTime lastAccessTimeOnMockFileSystem = mockFileSystem.File.GetLastAccessTime(fileHandle);