Fix tests on macos

Author: gorlak

.vscode/launch.json

@@ -0,0 +1,20 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Launch Debug",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/Bin/Debug/PlatformTests",
+            "args": [],
+            "stopAtEntry": false,
+            "cwd": "${workspaceFolder}/Bin/Debug",
+            "environment": [],
+            "externalConsole": true,
+            "MIMode": "lldb"
+        }
+    ]
+}

Source/Platform/File.cpp

@@ -7,20 +7,32 @@ void Helium::SplitDirectories( const std::string& path, std::vector< std::string
 { 
 	static char pathSep[ 2 ] = { Helium::PathSeparator, '\0' };
 
+	output.clear();
+	if ( path.empty() )
+	{
+		return;
+	}
+
+	std::string newRoot = path;
+	if ( newRoot[0] == Helium::PathSeparator )
+	{
+		newRoot.erase( 0, 1 );
+	}
+
 	std::string::size_type start = 0, end = 0;
-	for ( ; ( end = path.find( Helium::PathSeparator, start ) ) != std::string::npos; start = end + 1 )
+	for ( ; ( end = newRoot.find( Helium::PathSeparator, start ) ) != std::string::npos; start = end + 1 )
 	{ 
 		if ( start != end )
 		{
-			std::string substr = path.substr( start, end - start );
+			std::string substr = newRoot.substr( start, end - start );
 			if ( substr != pathSep )
 			{
 				output.push_back( substr );
 			}
 		}
 	}
 
-	std::string substr = path.substr( start );
+	std::string substr = newRoot.substr( start );
 	if ( substr != pathSep && substr.length() > 0 )
 	{
 		output.push_back( substr ); 

Source/Platform/FilePosix.cpp

@@ -363,7 +363,7 @@ bool Helium::MakePath( const char* path )
 	{
 		if ( stat( currentDirectory.c_str(), &status ) != 0 )
 		{
-			if ( !mkdir( currentDirectory.c_str(), 0777 ) )
+			if ( mkdir( currentDirectory.c_str(), 0777 ) != 0 )
 			{
 				if ( errno != EEXIST )
 				{
@@ -454,5 +454,5 @@ bool Helium::Move( const char* source, const char* dest )
 
 bool Helium::Delete( const char* path )
 {
-	return unlink( path ) != 0;
+	return unlink( path ) == 0;
 }