File.Create throws exception for relative file paths

[Gav-Brown]

Package Version

2.1.0.256

Repro steps

1. Create MockFileSystem
2. Create working directory
3. Set working directory
4. Call

using (var file = fileSystem.File.Create("File.txt")) { }

Expected behavior

File is created in current working directory (which does exist).

Actual behavior

Exception is thrown.
Could not find a part of the path 'File.txt'.

This worked in version 2.0.0.144. I suspect it is due to change for #278 an #286
which assumes an absolute file path rather than a relative one.

.NET Framework version handles both cases, as does

fileSystem.File.WriteAllText("File.txt", null);

[fgreinacher]

Thanks for reporting this! Could you test if the problem also occurs in the latest prerelease version? #372 might already have fixed it.

[Gav-Brown]

Thanks. Alas it still throws in latest beta.

            string workingDirectory = @"C:\folder";
            string relativeFile = "file.txt";
            var fileSystem = new MockFileSystem();

            fileSystem.Directory.CreateDirectory(workingDirectory);
            fileSystem.Directory.SetCurrentDirectory(workingDirectory);

            // Throws.
            using(fileSystem.File.Create(relativeFile))
            {
            }

            // Works.
            fileSystem.File.WriteAllText(relativeFile, null);

[ThomasBarnekow]

This seems to be related to my issue #404.

The funny thing is that issue 404 is related to something that is not found ;-)

[fgreinacher]

@Gav-Brown The problem is fixed with ec1b673. Could you verify your use case with the prerelease version https://www.nuget.org/packages/System.IO.Abstractions/2.2.10-beta?

[Gav-Brown]

@fgreinacher Thanks. I've tested and can confirm this is now resolved.