fix io::path.parent() & update tests

src/io/path.hpp

@@ -110,13 +110,9 @@ namespace io {
         path parent() const {
             size_t slashpos = str.rfind('/');
             if (slashpos == std::string::npos) {
-                return colonPos == std::string::npos
+                return colonPos == std::string::npos ? "" : str;
-                           ? path()
-                           : path(str.substr(0, colonPos));
             }
-            return colonPos == std::string::npos
+            return str.substr(0, slashpos);
-                       ? path(str.substr(0, slashpos))
-                       : path(str.substr(0, colonPos) + str.substr(slashpos));
         }
 
         std::string string() const {

test/coders/lua_parsing.cpp

@@ -3,10 +3,14 @@
 #include "coders/commons.hpp"
 #include "coders/lua_parsing.hpp"
 #include "io/io.hpp"
+#include "io/devices/StdfsDevice.hpp"
 #include "util/stringutil.hpp"
 
+namespace fs = std::filesystem;
+
 TEST(lua_parsing, Tokenizer) {
-    auto filename = "../../res/scripts/stdlib.lua";
+    io::set_device("res", std::make_shared<io::StdfsDevice>(fs::u8path("../../res")));
+    auto filename = "res:scripts/stdlib.lua";
     auto source = io::read_string(filename);
     try {
         auto tokens = lua::tokenize(filename, source);

test/coders/vec3.cpp

@@ -2,9 +2,13 @@
 
 #include "coders/vec3.hpp"
 #include "io/io.hpp"
+#include "io/devices/StdfsDevice.hpp"
+
+namespace fs = std::filesystem;
 
 TEST(VEC3, Decode) {
-    io::path file = "res/models/block.vec3";
+    io::set_device("res", std::make_shared<io::StdfsDevice>(fs::u8path("../../res")));
+    io::path file = "res:models/block.vec3";
     auto bytes = io::read_bytes_buffer(file);
     auto model = vec3::load(file.string(), bytes);
 }