Add unit test for loading native library from host-provided native search paths

Also used and added to existing macros for separator chars and removed the new members I had added to the Path class.

Related to #1680

12 files changed, 1037 insertions, 29 deletions

diff --git a/src/inc/clr/fs/path.h b/src/inc/clr/fs/path.h
index c8bb01e329..a1b47dd295 100644
--- a/src/inc/clr/fs/path.h
+++ b/src/inc/clr/fs/path.h
@@ -36,25 +36,6 @@ namespace clr
         class Path
         {
         public:
-#if !PLATFORM_UNIX
-            static const CHAR DirectorySeparatorChar = '\\';
-#else // PLATFORM_UNIX
-            static const CHAR DirectorySeparatorChar = '/';
-#endif
-
-#if !PLATFORM_UNIX
-            static const CHAR PathSeparatorChar = ';';
-#else // PLATFORM_UNIX
-            static const CHAR PathSeparatorChar = ':';
-#endif // !PLATFORM_UNIX
-
-#if !PLATFORM_UNIX
-            static const CHAR VolumeSeparatorChar = ':';
-#else // PLATFORM_UNIX
-            static const CHAR VolumeSeparatorChar = '/';
-#endif // !PLATFORM_UNIX
-
-        public:
             //-----------------------------------------------------------------------------------------
             static inline bool
             Exists(
@@ -82,7 +63,7 @@ namespace clr
 
                 // Similar to System.IO.Path.IsRelative()
 #if PLATFORM_UNIX
-                if(wzPath[0] == VolumeSeparatorChar)
+                if(wzPath[0] == VOLUME_SEPARATOR_CHAR_W)
                 {
                     return false;
                 }
@@ -92,8 +73,8 @@ namespace clr
                 // - "\..." - these paths are relative, as they depend on the current drive
                 // - "C:..." and not "C:\..." - these paths are relative, as they depend on the current directory for drive C
                 if (wzPath[0] != W('\0') &&
-                    wzPath[1] == VolumeSeparatorChar &&
-                    wzPath[2] == DirectorySeparatorChar &&
+                    wzPath[1] == VOLUME_SEPARATOR_CHAR_W &&
+                    wzPath[2] == DIRECTORY_SEPARATOR_CHAR_W &&
                     (
                         (wzPath[0] >= W('A') && wzPath[0] <= W('Z')) ||
                         (wzPath[0] >= W('a') && wzPath[0] <= W('z'))
@@ -101,7 +82,7 @@ namespace clr
                 {
                     return false;
                 }
-                if(wzPath[0] == DirectorySeparatorChar && wzPath[1] == DirectorySeparatorChar)
+                if (wzPath[0] == DIRECTORY_SEPARATOR_CHAR_W && wzPath[1] == DIRECTORY_SEPARATOR_CHAR_W)
                 {
                     return false;
                 }
@@ -129,8 +110,7 @@ namespace clr
                 size_t cchBuf = *pcchBuffer;
 
                 IfFailRet(StringCchCopyExW(wzBuf, cchBuf, wzPathLeft, &wzBuf, &cchBuf, STRSAFE_NULL_ON_FAILURE));
-                const WCHAR directorySeparatorWString[] = {DirectorySeparatorChar, W('\0')};
-                IfFailRet(StringCchCatExW(wzBuf, cchBuf, wzBuf[-1] == DirectorySeparatorChar ? W("") : directorySeparatorWString, &wzBuf, &cchBuf, STRSAFE_NULL_ON_FAILURE));
+                IfFailRet(StringCchCatExW(wzBuf, cchBuf, wzBuf[-1] == DIRECTORY_SEPARATOR_CHAR_W ? W("") : DIRECTORY_SEPARATOR_STR_W, &wzBuf, &cchBuf, STRSAFE_NULL_ON_FAILURE));
                 IfFailRet(StringCchCatExW(wzBuf, cchBuf, wzPathRight, &wzBuf, &cchBuf, STRSAFE_NULL_ON_FAILURE));
 
                 return S_OK;
diff --git a/src/inc/palclr.h b/src/inc/palclr.h
index 26d882d08f..e005c29208 100644
--- a/src/inc/palclr.h
+++ b/src/inc/palclr.h
@@ -93,6 +93,8 @@
 #define PATH_SEPARATOR_CHAR_W W(';')
 #define PATH_SEPARATOR_STR_W W(";")
 
+#define VOLUME_SEPARATOR_CHAR_W W(':')
+
 // PAL Macros
 // Not all compilers support fully anonymous aggregate types, so the
 // PAL provides names for those types. To allow existing definitions of
diff --git a/src/pal/inc/rt/palrt.h b/src/pal/inc/rt/palrt.h
index b969047ce3..2c9bf146d4 100644
--- a/src/pal/inc/rt/palrt.h
+++ b/src/pal/inc/rt/palrt.h
@@ -1365,12 +1365,14 @@ typedef VOID (__stdcall *WAITORTIMERCALLBACK)(PVOID, BOOLEAN);
 #define DIRECTORY_SEPARATOR_STR_W W("/")
 #define PATH_SEPARATOR_CHAR_W W(':')
 #define PATH_SEPARATOR_STR_W W(":")
+#define VOLUME_SEPARATOR_CHAR_W W('/')
 #else // PLATFORM_UNIX
 #define DIRECTORY_SEPARATOR_CHAR_A '\\'
 #define DIRECTORY_SEPARATOR_CHAR_W W('\\')
 #define DIRECTORY_SEPARATOR_STR_W W("\\")
 #define PATH_SEPARATOR_CHAR_W W(';')
 #define PATH_SEPARATOR_STR_W W(";")
+#define VOLUME_SEPARATOR_CHAR_W W(':')
 #endif // PLATFORM_UNIX
 
 #ifndef IMAGE_IMPORT_DESC_FIELD
diff --git a/src/vm/appdomainnative.cpp b/src/vm/appdomainnative.cpp
index 4aa6ef42f6..6dd2ffd6f7 100644
--- a/src/vm/appdomainnative.cpp
+++ b/src/vm/appdomainnative.cpp
@@ -1580,7 +1580,7 @@ void QCALLTYPE AppDomainNative::SetNativeDllSearchDirectories(__in_z LPCWSTR wsz
         while (itr != end)
         {
             start = itr;
-            BOOL found = sDirectories.Find(itr, Path::PathSeparatorChar);
+            BOOL found = sDirectories.Find(itr, PATH_SEPARATOR_CHAR_W);
             if (!found)
             {
                 itr = end;
@@ -1597,9 +1597,9 @@ void QCALLTYPE AppDomainNative::SetNativeDllSearchDirectories(__in_z LPCWSTR wsz
 
             if (len > 0)
             {
-                if (qualifiedPath[len - 1] != Path::DirectorySeparatorChar)
+                if (qualifiedPath[len - 1] != DIRECTORY_SEPARATOR_CHAR_W)
                 {
-                    qualifiedPath.Append(Path::DirectorySeparatorChar);
+                    qualifiedPath.Append(DIRECTORY_SEPARATOR_CHAR_W);
                 }
 
                 NewHolder<SString> stringHolder (new SString(qualifiedPath));
diff --git a/tests/runtest.sh b/tests/runtest.sh
index 6333873266..4f5970bfd5 100755
--- a/tests/runtest.sh
+++ b/tests/runtest.sh
@@ -611,7 +611,6 @@ if [ ! -d "$testRootDir" ]; then
     echo "Directory specified by --testRootDir does not exist: $testRootDir"
     exit 1
 fi
-cd "$testRootDir"
 
 xunit_output_begin
 create_core_overlay
@@ -619,6 +618,7 @@ copy_test_native_bin_to_test_root
 load_unsupported_tests
 load_failing_tests
 
+cd "$testRootDir"
 if [ -z "$testDirectories" ]
 then
     # No test directories were specified, so run everything in the current 
diff --git a/tests/src/Loader/NativeLibs/CMakeLists.txt b/tests/src/Loader/NativeLibs/CMakeLists.txt
new file mode 100644
index 0000000000..125be8f8d8
--- /dev/null
+++ b/tests/src/Loader/NativeLibs/CMakeLists.txt
@@ -0,0 +1,9 @@
+cmake_minimum_required(VERSION 2.6)
+project(FromNativePaths_lib)
+
+set(CMAKE_SHARED_LIBRARY_PREFIX "")
+
+set(SOURCES FromNativePaths_lib.cpp FromNativePaths_lib.def)
+add_library(FromNativePaths_lib SHARED ${SOURCES})
+
+install(TARGETS FromNativePaths_lib DESTINATION Loader/NativeLibs)
diff --git a/tests/src/Loader/NativeLibs/FromNativePaths.cs b/tests/src/Loader/NativeLibs/FromNativePaths.cs
new file mode 100644
index 0000000000..5739a9861a
--- /dev/null
+++ b/tests/src/Loader/NativeLibs/FromNativePaths.cs
@@ -0,0 +1,119 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Runtime.InteropServices;
+
+public class FromNativePaths
+{
+    private const string NativeLibraryNameWithoutExtension = "FromNativePaths_lib";
+
+    // See src/pal/src/include/pal/module.h
+    private static readonly string[] NativeLibraryExtensions = new string[] { ".dll", ".so", ".dylib", ".a", ".sl" };
+
+    [DllImport(NativeLibraryNameWithoutExtension)]
+    private static extern bool NativeFunc();
+
+    private static bool LoadNativeLibrary()
+    {
+        // Isolate the call to the native function in a separate function so that we can catch exceptions
+        return NativeFunc();
+    }
+
+    private static bool Test()
+    {
+        // The loader checks the folder where the assembly that is loading the native library resides. The host-provided native
+        // search paths for corerun include the folder where corerun resides. Move the native library there to verify that it
+        // can be loaded from there.
+
+        var coreRoot = Environment.GetEnvironmentVariable("CORE_ROOT");
+        if (string.IsNullOrWhiteSpace(coreRoot))
+        {
+            Console.WriteLine("FromNativePaths failed: CORE_ROOT is not defined.");
+            return false;
+        }
+        if (!Directory.Exists(coreRoot))
+        {
+            Console.WriteLine(
+                "FromNativePaths failed: Directory specified by CORE_ROOT does not exist: {0}",
+                coreRoot);
+            return false;
+        }
+
+        var movedLibraryDestinationPaths = new List<string>();
+        var moveLibraryFailed = false;
+        foreach (var nativeLibraryExtension in NativeLibraryExtensions)
+        {
+            var nativeLibraryName = NativeLibraryNameWithoutExtension + nativeLibraryExtension;
+            if (!File.Exists(nativeLibraryName))
+                continue;
+
+            var destinationPath = Path.Combine(coreRoot, nativeLibraryName);
+            try
+            {
+                var destinationFileInfo = new FileInfo(destinationPath);
+                if (destinationFileInfo.Exists)
+                {
+                    destinationFileInfo.IsReadOnly = false;
+                    destinationFileInfo.Delete();
+                }
+                File.Move(nativeLibraryName, destinationPath);
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine(
+                    "FromNativePaths failed: Failed to move native library to CORE_ROOT: {0}",
+                    ex.Message);
+                moveLibraryFailed = true;
+                break;
+            }
+
+            movedLibraryDestinationPaths.Add(destinationPath);
+        }
+
+        try
+        {
+            if (moveLibraryFailed)
+                return false;
+
+            // Try to load the native library
+            try
+            {
+                if (LoadNativeLibrary())
+                    return true;
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine("FromNativePaths failed: Failed to load the native library: {0}", ex.Message);
+                return false;
+            }
+
+            Console.WriteLine("FromNativePaths failed: Unexpected result from native function call.");
+            return false;
+        }
+        finally
+        {
+            // Copy the native library back to the test folder. Don't move it, since it is loaded and the move may fail.
+            foreach (var movedLibraryDestinationPath in movedLibraryDestinationPaths)
+            {
+                try
+                {
+                    File.Copy(movedLibraryDestinationPath, Path.GetFileName(movedLibraryDestinationPath));
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine(
+                        "FromNativePaths failed: Failed to move the native library back to the test folder: {0}",
+                        ex.Message);
+                }
+            }
+        }
+    }
+
+    public static int Main()
+    {
+        return Test() ? 100 : 101;
+    }
+}
diff --git a/tests/src/Loader/NativeLibs/FromNativePaths.csproj b/tests/src/Loader/NativeLibs/FromNativePaths.csproj
new file mode 100644
index 0000000000..163b1cde90
--- /dev/null
+++ b/tests/src/Loader/NativeLibs/FromNativePaths.csproj
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>FromNativePaths</AssemblyName>
+    <ProjectGuid>{649A239B-AB4B-4E20-BDCA-3BA736E8B790}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <FileAlignment>512</FileAlignment>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="FromNativePaths.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="project.json" />
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+</Project>
\ No newline at end of file
diff --git a/tests/src/Loader/NativeLibs/FromNativePaths_lib.cpp b/tests/src/Loader/NativeLibs/FromNativePaths_lib.cpp
new file mode 100644
index 0000000000..d1f540597a
--- /dev/null
+++ b/tests/src/Loader/NativeLibs/FromNativePaths_lib.cpp
@@ -0,0 +1,7 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+extern "C" bool NativeFunc()
+{
+    return true;
+}
diff --git a/tests/src/Loader/NativeLibs/FromNativePaths_lib.def b/tests/src/Loader/NativeLibs/FromNativePaths_lib.def
new file mode 100644
index 0000000000..d873fbd2a9
--- /dev/null
+++ b/tests/src/Loader/NativeLibs/FromNativePaths_lib.def
@@ -0,0 +1,2 @@
+EXPORTS
+    NativeFunc
\ No newline at end of file
diff --git a/tests/src/Loader/NativeLibs/project.json b/tests/src/Loader/NativeLibs/project.json
new file mode 100644
index 0000000000..e29434937e
--- /dev/null
+++ b/tests/src/Loader/NativeLibs/project.json
@@ -0,0 +1,13 @@
+{
+  "dependencies": {
+    "System.Collections": "4.0.10-beta-*",
+    "System.Console": "4.0.0-beta-*",
+    "System.IO": "4.0.10-beta-*",
+    "System.IO.FileSystem": "4.0.0-beta-*",
+    "System.Runtime.Extensions": "4.0.10-beta-*",
+    "System.Runtime.InteropServices": "4.0.20-beta-*"
+  },
+  "frameworks": {
+    "dnxcore50": {}
+  }
+}
\ No newline at end of file
diff --git a/tests/src/Loader/NativeLibs/project.lock.json b/tests/src/Loader/NativeLibs/project.lock.json
new file mode 100644
index 0000000000..a46a767d51
--- /dev/null
+++ b/tests/src/Loader/NativeLibs/project.lock.json
@@ -0,0 +1,850 @@
+{
+  "locked": false,
+  "version": -9996,
+  "targets": {
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+        },
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+          "System.IO": "4.0.0"
+        },
+        "compile": {
+          "ref/dotnet/System.Console.dll": {}
+        }
+      },
+      "System.Globalization/4.0.0-beta-23127": {
+        "dependencies": {
+          "System.Runtime": "4.0.0-beta-23127"
+        },
+        "compile": {
+          "ref/dotnet/System.Globalization.dll": {}
+        }
+      },
+      "System.IO/4.0.10-beta-23127": {
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+          "System.Text.Encoding": "4.0.0-beta-23127",
+          "System.Threading.Tasks": "4.0.0-beta-23127"
+        },
+        "compile": {
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+        },
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+        },
+        "compile": {
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+        },
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+        },
+        "runtime": {
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+          "System.Reflection": "4.0.0-beta-23127",
+          "System.Globalization": "4.0.0-beta-23127"
+        },
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+        },
+        "compile": {
+          "ref/dotnet/System.Runtime.dll": {}
+        },
+        "runtime": {
+          "lib/DNXCore50/System.Runtime.dll": {}
+        }
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+        },
+        "compile": {
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+        },
+        "runtime": {
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+    }
+  },
+  "libraries": {
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+        "System.Collections.nuspec",
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+        "lib/MonoTouch10/_._",
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+        "ref/dotnet/System.Collections.xml",
+        "ref/dotnet/de/System.Collections.xml",
+        "ref/dotnet/es/System.Collections.xml",
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\ No newline at end of file