Updated license to 2017

CHANGELOG.md

@@ -14,3 +14,7 @@
 
 ## Version 1.0.0
 - DLL configuration on platforms other than Windows is done via app.config now, as per http://www.mono-project.com/docs/advanced/pinvoke/dllmap/
+- Fixed a bug in which trying to open a nonexistant bug would create an invalid handle without throwing exceptions
+- Fixed a bug which would ignore the offset parameter in stream readings
+- Added automated testing
+- Various deprecated methods are now private only, they have been substituted with safer counterparts

LICENSE.md

@@ -1,4 +1,4 @@
-# Copyright (c) 2016 Francesco Bertolaccini
+# Copyright (c) 2017 Francesco Bertolaccini
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"),
 to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,

README.md

@@ -29,14 +29,8 @@ You should also include compiled shared library of physfs alongside your binary
 
 ````c#
 using(var pfs = new PhysFS("")) // This ensures correct initialization and deinitialization
-using(var stream = pfs.OpenRead("/helloworld.txt"))
+using(var reader = new StreamReader(pfs.OpenRead("/helloworld.txt")))
 {
-  var reader = new StreamReader(stream);
   var contents = reader.ReadToEnd();
 }
 ````
-
-## Support on Beerpay
-Hey dude! Help me out for a couple of :beers:!
-
-[![Beerpay](https://beerpay.io/frabert/SharpPhysFS/badge.svg?style=beer-square)](https://beerpay.io/frabert/SharpPhysFS)  [![Beerpay](https://beerpay.io/frabert/SharpPhysFS/make-wish.svg?style=flat-square)](https://beerpay.io/frabert/SharpPhysFS?focus=wish)

SharpPhysFS.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.26403.3
+VisualStudioVersion = 15.0.26430.6
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SharpPhysFS", "SharpPhysFS\SharpPhysFS.csproj", "{AD6AA182-8C7F-4F3A-AAEF-7BD993D1D262}"
 EndProject
@@ -15,20 +15,54 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Test", "Test\Test.csproj", "{E1D09413-14F4-4C29-BD06-B6E7D38B80CD}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UnitTests", "UnitTests\UnitTests.csproj", "{F1848CF4-B858-4F6D-A1CE-032633BE3C28}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
 		Release|Any CPU = Release|Any CPU
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{AD6AA182-8C7F-4F3A-AAEF-7BD993D1D262}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{AD6AA182-8C7F-4F3A-AAEF-7BD993D1D262}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AD6AA182-8C7F-4F3A-AAEF-7BD993D1D262}.Debug|x64.ActiveCfg = Debug|x64
+		{AD6AA182-8C7F-4F3A-AAEF-7BD993D1D262}.Debug|x64.Build.0 = Debug|x64
+		{AD6AA182-8C7F-4F3A-AAEF-7BD993D1D262}.Debug|x86.ActiveCfg = Debug|x86
+		{AD6AA182-8C7F-4F3A-AAEF-7BD993D1D262}.Debug|x86.Build.0 = Debug|x86
 		{AD6AA182-8C7F-4F3A-AAEF-7BD993D1D262}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{AD6AA182-8C7F-4F3A-AAEF-7BD993D1D262}.Release|Any CPU.Build.0 = Release|Any CPU
+		{AD6AA182-8C7F-4F3A-AAEF-7BD993D1D262}.Release|x64.ActiveCfg = Release|x64
+		{AD6AA182-8C7F-4F3A-AAEF-7BD993D1D262}.Release|x64.Build.0 = Release|x64
+		{AD6AA182-8C7F-4F3A-AAEF-7BD993D1D262}.Release|x86.ActiveCfg = Release|x86
+		{AD6AA182-8C7F-4F3A-AAEF-7BD993D1D262}.Release|x86.Build.0 = Release|x86
 		{E1D09413-14F4-4C29-BD06-B6E7D38B80CD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{E1D09413-14F4-4C29-BD06-B6E7D38B80CD}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E1D09413-14F4-4C29-BD06-B6E7D38B80CD}.Debug|x64.ActiveCfg = Debug|x64
+		{E1D09413-14F4-4C29-BD06-B6E7D38B80CD}.Debug|x64.Build.0 = Debug|x64
+		{E1D09413-14F4-4C29-BD06-B6E7D38B80CD}.Debug|x86.ActiveCfg = Debug|x86
+		{E1D09413-14F4-4C29-BD06-B6E7D38B80CD}.Debug|x86.Build.0 = Debug|x86
 		{E1D09413-14F4-4C29-BD06-B6E7D38B80CD}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{E1D09413-14F4-4C29-BD06-B6E7D38B80CD}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E1D09413-14F4-4C29-BD06-B6E7D38B80CD}.Release|x64.ActiveCfg = Release|x64
+		{E1D09413-14F4-4C29-BD06-B6E7D38B80CD}.Release|x64.Build.0 = Release|x64
+		{E1D09413-14F4-4C29-BD06-B6E7D38B80CD}.Release|x86.ActiveCfg = Release|x86
+		{E1D09413-14F4-4C29-BD06-B6E7D38B80CD}.Release|x86.Build.0 = Release|x86
+		{F1848CF4-B858-4F6D-A1CE-032633BE3C28}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F1848CF4-B858-4F6D-A1CE-032633BE3C28}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F1848CF4-B858-4F6D-A1CE-032633BE3C28}.Debug|x64.ActiveCfg = Debug|x64
+		{F1848CF4-B858-4F6D-A1CE-032633BE3C28}.Debug|x64.Build.0 = Debug|x64
+		{F1848CF4-B858-4F6D-A1CE-032633BE3C28}.Debug|x86.ActiveCfg = Debug|x86
+		{F1848CF4-B858-4F6D-A1CE-032633BE3C28}.Debug|x86.Build.0 = Debug|x86
+		{F1848CF4-B858-4F6D-A1CE-032633BE3C28}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F1848CF4-B858-4F6D-A1CE-032633BE3C28}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F1848CF4-B858-4F6D-A1CE-032633BE3C28}.Release|x64.ActiveCfg = Release|x64
+		{F1848CF4-B858-4F6D-A1CE-032633BE3C28}.Release|x64.Build.0 = Release|x64
+		{F1848CF4-B858-4F6D-A1CE-032633BE3C28}.Release|x86.ActiveCfg = Release|x86
+		{F1848CF4-B858-4F6D-A1CE-032633BE3C28}.Release|x86.Build.0 = Release|x86
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

SharpPhysFS/Interop.cs

@@ -44,7 +44,7 @@ namespace SharpPhysFS
   }
 
   [StructLayout(LayoutKind.Sequential)]
-  public class Allocator
+  public struct Allocator
   {
     [MarshalAs(UnmanagedType.FunctionPtr)]
     public InitDelegate Init;

SharpPhysFS/PhysFS.LowLevel.cs

@@ -1,8 +1,9 @@
 using System;
+using System.Runtime.InteropServices;
 
 namespace SharpPhysFS
 {
-  public partial class PhysFS
+  public sealed partial class PhysFS
   {
     internal static class LowLevel
     {
@@ -36,15 +37,18 @@ namespace SharpPhysFS
         physFS.ThrowException(err);
       }
 
-      public static long Read(IntPtr file, byte[] buffer, uint objSize, uint objCount)
+      public static long Read(IntPtr file, byte[] buffer, uint objSize, uint objCount, int offset)
       {
-        unsafe
+        if (buffer.Length < (objSize * objCount) + offset)
         {
-          fixed (void* ptr = buffer)
+          throw new InvalidOperationException("Buffer too small");
-          {
-            return Interop.PHYSFS_read(file, (IntPtr)ptr, objSize, objCount);
-          }
         }
+
+        var handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
+        long ret = Interop.PHYSFS_read(file, IntPtr.Add(handle.AddrOfPinnedObject(), offset), 1, objCount);
+        handle.Free();
+
+        return ret;
       }
 
       public static long Write(IntPtr file, byte[] buffer, uint objSize, uint objCount)

SharpPhysFS/PhysFS.cs

@@ -14,7 +14,7 @@ namespace SharpPhysFS
   /// <summary>
   /// Main class for SharpPhysFS
   /// </summary>
-  public partial class PhysFS
+  public sealed partial class PhysFS
     : IDisposable
   {
     public class PhysFSException : Exception
@@ -29,11 +29,6 @@ namespace SharpPhysFS
       Init(argv0);
     }
 
-    public PhysFS(string argv0, string libname)
-    {
-      Init(argv0);
-    }
-
     static T FromPtr<T>(IntPtr ptr)
     {
       return (T)Marshal.PtrToStructure(ptr, typeof(T));
@@ -709,39 +704,49 @@ namespace SharpPhysFS
     public PhysFSStream OpenAppend(string file)
     {
       var handle = LowLevel.OpenAppend(file, this);
+      if (handle == IntPtr.Zero) throw new PhysFSException(this);
       return new PhysFSStream(this, handle, false);
     }
 
     public PhysFSStream OpenRead(string file)
     {
       var handle = LowLevel.OpenRead(file, this);
+      if (handle == IntPtr.Zero) throw new PhysFSException(this);
       return new PhysFSStream(this, handle, true);
     }
 
     public PhysFSStream OpenWrite(string file)
     {
       var handle = LowLevel.OpenWrite(file, this);
+      if (handle == IntPtr.Zero) throw new PhysFSException(this);
       return new PhysFSStream(this, handle, false);
     }
 
-    bool disposed = false;
+    #region IDisposable Support
+    private bool disposedValue = false; // To detect redundant calls
 
-    protected virtual void Dispose(bool disposing)
+    void Dispose(bool disposing)
     {
-      if (!disposed)
+      if (!disposedValue)
       {
         if (disposing)
         {
           Deinit();
         }
-
+        disposedValue = true;
-        disposed = true;
       }
     }
     
+    ~PhysFS() {
+      Dispose(false);
+    }
+    
     public void Dispose()
     {
+      // Do not change this code. Put cleanup code in Dispose(bool disposing) above.
       Dispose(true);
-    }
+      GC.SuppressFinalize(this);
+    }
+    #endregion
   }
 }

SharpPhysFS/PhysFSStream.cs

@@ -65,14 +65,14 @@ namespace SharpPhysFS
       }
     }
 
-    public long Read(byte[] buffer, uint offset, uint count)
+    public long Read(byte[] buffer, int offset, uint count)
     {
-      return PhysFS.LowLevel.Read(handle, buffer, 1, count);
+      return PhysFS.LowLevel.Read(handle, buffer, 1, count, offset);
     }
 
     public override int Read(byte[] buffer, int offset, int count)
     {
-      return (int)Read(buffer, (uint)offset, (uint)count);
+      return (int)Read(buffer, offset, (uint)count);
     }
 
     public override long Seek(long offset, SeekOrigin origin)

SharpPhysFS/SharpPhysFS.csproj

@@ -31,6 +31,46 @@
     <WarningLevel>4</WarningLevel>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x86\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
+    <OutputPath>bin\x86\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
   </ItemGroup>

Test/Program.cs

@@ -314,6 +314,17 @@ namespace Test
       return true;
     }
 
+    static bool GetMountPoint(string[] args)
+    {
+      if (args.Length < 1)
+      {
+        Console.WriteLine("Usage: getmountpoint <file>");
+        return false;
+      }
+      Console.WriteLine(physFS.GetMountPoint(args[0]));
+      return true;
+    }
+
     #endregion
 
     static void Main(string[] args)
@@ -358,6 +369,7 @@ namespace Test
       commands.Add("issymlink", IsSymlink);
       commands.Add("cat", Cat);
       commands.Add("filelength", FileLength);
+      commands.Add("getmountpoint", GetMountPoint);
 
       while (true)
       {

Test/Test.csproj

@@ -32,6 +32,46 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x86\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
+    <OutputPath>bin\x86\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <ErrorReport>prompt</ErrorReport>
+    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />

UnitTests/Properties/AssemblyInfo.cs

@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("UnitTests")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("UnitTests")]
+[assembly: AssemblyCopyright("Copyright ©  2017")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible
+// to COM components.  If you need to access a type in this assembly from
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("f1848cf4-b858-4f6d-a1ce-032633be3c28")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

UnitTests/Tests.cs

@@ -0,0 +1,169 @@
+using System;
+using System.IO;
+using System.Linq;
+using Xunit;
+using SharpPhysFS;
+
+namespace UnitTests
+{
+  public class Tests
+  {
+    [Fact]
+    void IsInit()
+    {
+      using (var pfs = new PhysFS(""))
+        Assert.True(pfs.IsInit(), "PhysFS was not initialized");
+    }
+
+    [Theory]
+    [InlineData(2, 1, 0)]
+    void VersionCheck(byte major, byte minor, byte patch)
+    {
+      using (var pfs = new PhysFS(""))
+        Assert.Equal(new SharpPhysFS.Version() { major = major, minor = minor, patch = patch }, pfs.GetLinkedVersion());
+    }
+
+    [Fact]
+    void DirSeparator()
+    {
+      using (var pfs = new PhysFS(""))
+      {
+        Assert.NotNull(pfs.GetDirSeparator());
+        Assert.NotEqual("", pfs.GetDirSeparator());
+      }
+    }
+
+    [Fact]
+    void PermitSymbolicLinks()
+    {
+      using (var pfs = new PhysFS(""))
+      {
+        Assert.False(pfs.SymbolicLinksPermitted());
+        pfs.PermitSymbolicLinks(true);
+        Assert.True(pfs.SymbolicLinksPermitted());
+        pfs.PermitSymbolicLinks(false);
+        Assert.False(pfs.SymbolicLinksPermitted());
+      }
+    }
+
+    [Fact]
+    void Mounting()
+    {
+      using (var pfs = new PhysFS(""))
+      {
+        Assert.Empty(pfs.GetSearchPath());
+        pfs.Mount("./", "/", false);
+        Assert.Equal(new string[] { "./" }, pfs.GetSearchPath());
+        Assert.Equal("/", pfs.GetMountPoint("./"));
+        Assert.True(pfs.IsDirectory("/"));
+
+        pfs.Mount("../", "foo", true);
+        Assert.Equal(new string[] { "./", "../", }, pfs.GetSearchPath());
+        Assert.Equal("foo/", pfs.GetMountPoint("../"));
+        Assert.True(pfs.IsDirectory("/foo"));
+
+        pfs.Mount("../../", "bar", false);
+        Assert.Equal(new string[] { "../../", "./", "../", }, pfs.GetSearchPath());
+        Assert.Equal("bar/", pfs.GetMountPoint("../../"));
+        Assert.True(pfs.IsDirectory("/bar"));
+
+        pfs.RemoveFromSearchPath("../");
+        Assert.Equal(new string[] { "../../", "./", }, pfs.GetSearchPath());
+      }
+    }
+
+    [Fact]
+    void FileEnumeration()
+    {
+      using (var pfs = new PhysFS(""))
+      {
+        pfs.Mount("./", "/", false);
+
+        var effectiveFiles = Directory.GetFiles("./").Select(x => Path.GetFileName(x)).ToArray();
+        Array.Sort(effectiveFiles);
+        var enumeratedFiles = pfs.EnumerateFiles("/");
+        Array.Sort(enumeratedFiles);
+
+        Assert.Equal(effectiveFiles, enumeratedFiles);
+      }
+    }
+
+    [Fact]
+    void DriveEnumeration()
+    {
+      using(var pfs = new PhysFS(""))
+      {
+        var effectiveCdDrives = DriveInfo.GetDrives()
+          .Where(x => x.DriveType == DriveType.CDRom)
+          .Select(x => x.RootDirectory.FullName)
+          .ToArray();
+
+        var enumeratedCdDrives = pfs.GetCdRomDirs();
+
+        Array.Sort(effectiveCdDrives);
+        Array.Sort(enumeratedCdDrives);
+
+        Assert.Equal(effectiveCdDrives, enumeratedCdDrives);
+      }
+    }
+
+    [Fact]
+    void UserDirectory()
+    {
+      using(var pfs = new PhysFS(""))
+      {
+        var userDirectory = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
+        var pfsUserDirectory = pfs.GetUserDir();
+        Assert.Equal(Path.GetPathRoot(userDirectory), Path.GetPathRoot(pfsUserDirectory));
+      }
+    }
+
+    [Fact]
+    void DirectoryManipulation()
+    {
+      using(var pfs = new PhysFS(""))
+      {
+        pfs.SetWriteDir("./");
+        Assert.Equal("./", pfs.GetWriteDir());
+
+        pfs.Mkdir("hello");
+        Assert.True(Directory.Exists("./hello"));
+
+        pfs.Delete("hello");
+        Assert.False(Directory.Exists("./hello"));
+      }
+    }
+
+    [Fact]
+    void FileManipulation()
+    {
+      using (var pfs = new PhysFS(""))
+      {
+        pfs.SetWriteDir("./");
+        pfs.Mount("./", "/", true);
+        
+        using(var sw = new StreamWriter(pfs.OpenWrite("foo")))
+        {
+          sw.Write("hello, world! èòàùã こんにちは世界 你好世界");
+        }
+
+        Assert.True(File.Exists("./foo"));
+
+        var fileContent = File.ReadAllText("./foo");
+        using(var sr = new StreamReader(pfs.OpenRead("foo")))
+        {
+          Assert.Equal(fileContent, sr.ReadToEnd());
+        }
+
+        using (var sw = new StreamWriter(pfs.OpenAppend("foo")))
+        {
+          sw.Write("foo");
+        }
+        Assert.Equal(fileContent + "foo", File.ReadAllText("./foo"));
+
+        pfs.Delete("foo");
+        Assert.False(File.Exists("./foo"));
+      }
+    }
+  }
+}

UnitTests/UnitTests.csproj

@@ -0,0 +1,118 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\xunit.runner.visualstudio.2.2.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\packages\xunit.runner.visualstudio.2.2.0\build\net20\xunit.runner.visualstudio.props')" />
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{F1848CF4-B858-4F6D-A1CE-032633BE3C28}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>UnitTests</RootNamespace>
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