MockFileSystem.AddFilesFromEmbeddedNamespace() method throws ArgumentNullException

[ristogod]

Given a project named "Test" with a "Files" folder within it, and within that folder there are 5 files included as embeddedResources, when I call the given code, it always throw an exception:

System.ArgumentException: 'Value cannot be null. (Parameter 'key')'

   at System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
   at System.Collections.Generic.Dictionary`2.FindValue(TKey key)
   at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
   at System.IO.Abstractions.TestingHelpers.MockFileSystem.DirectoryExistsWithoutFixingPath(String path)
   at System.IO.Abstractions.TestingHelpers.MockFileSystem.AddFile(String path, MockFileData mockFile)
   at System.IO.Abstractions.TestingHelpers.MockFileSystem.AddFilesFromEmbeddedNamespace(String path, Assembly resourceAssembly, String embeddedRresourcePath)

This is how I'm calling the code

MockFileSystem fileSystem = new();
fileSystem.AddFilesFromEmbeddedNamespace(@"\\Test.Files", typeof(MyClass).Assembly, "Test.Files" );

[vbreuss]

@ristogod : This is really strange, as there is a test, that seems to describe exactly your scenario with two files inserted as embedded resources:

        [Test]
        public void MockFileSystem_AddFilesFromEmbeddedResource_ShouldAddAllTheFiles()
        {
            var fileSystem = new MockFileSystem();

            fileSystem.AddFilesFromEmbeddedNamespace(XFS.Path(@"C:\"), Assembly.GetExecutingAssembly(), "System.IO.Abstractions.TestingHelpers.Tests.TestFiles");

            Assert.Contains(XFS.Path(@"C:\TestFile.txt"), fileSystem.AllFiles.ToList());
            Assert.Contains(XFS.Path(@"C:\SecondTestFile.txt"), fileSystem.AllFiles.ToList());
        }

I couldn't reproduce your problem from the description alone. Could you provide an example project to reproduce the behaviour, or check if you can adapt the test case so that it fails?

[fgreinacher]

I couldn't reproduce your problem from the description alone. Could you provide an example project to reproduce the behaviour, or check if you can adapt the test case so that it fails?

@ristogod Could you please help us reproduce this?