.NET file system wrapper library [closed]

Answer 1

https://github.com/tathamoddie/System.IO.Abstractions allows you to do this (example from github)

public class MyComponent
{
readonly IFileSystem fileSystem;

// 
Create MyComponent with the given fileSystem implementation
public MyComponent(IFileSystem fileSystem)
{
    this.fileSystem = fileSystem;
}
/// 
Create MyComponent
public MyComponent() : this( 
    fileSystem: new FileSystem() //use default implementation which calls System.IO
) 
{
}

public void Validate()
{
    foreach (var textFile in fileSystem.Directory.GetFiles(@"c:\", "*.txt", SearchOption.TopDirectoryOnly))
    {
        var text = fileSystem.File.ReadAllText(textFile);
        if (text != "Testing is awesome.")
            throw new NotSupportedException("We can't go on together. It's not me, it's you.");
    }
}
}