Add working directory tests

src/samples/test-sample/test.cpp

@@ -125,9 +125,8 @@ bool test_env()
     return !computername.empty() && blub == "LUL";
 }
 
-bool test_io()
+bool test_file_path_io(const std::filesystem::path& filename)
 {
-    const std::filesystem::path filename = "a.txt";
     std::error_code ec{};
     const auto absolute_file = std::filesystem::absolute(filename, ec);
 
@@ -146,6 +145,18 @@ bool test_io()
         return false;
     }
 
+    return true;
+}
+
+bool test_io()
+{
+    const std::filesystem::path filename = "a.txt";
+
+    if (!test_file_path_io(filename))
+    {
+        return false;
+    }
+
     FILE* fp{};
     (void)fopen_s(&fp, filename.string().c_str(), "wb");
 
@@ -170,6 +181,43 @@ bool test_io()
     return text == buffer;
 }
 
+bool test_working_directory()
+{
+    std::error_code ec{};
+
+    const auto current_dir = std::filesystem::current_path(ec);
+    if (ec)
+    {
+        puts("Failed to get current path");
+        return false;
+    }
+
+    const std::filesystem::path sys32 = "C:/windows/system32";
+    current_path(sys32, ec);
+
+    if (ec)
+    {
+        puts("Failed to update working directory");
+        return false;
+    }
+
+    const auto new_current_dir = std::filesystem::current_path();
+    if (sys32 != new_current_dir)
+    {
+        puts("Updated directory is wrong!");
+        return false;
+    }
+
+    if (!std::ifstream("ntdll.dll"))
+    {
+        puts("Working directory is not active!");
+        return false;
+    }
+
+    std::filesystem::current_path(current_dir);
+    return std::filesystem::current_path() == current_dir;
+}
+
 bool test_dir_io()
 {
     size_t count = 0;
@@ -367,6 +415,7 @@ int main(const int argc, const char* argv[])
 
     RUN_TEST(test_io, "I/O")
     RUN_TEST(test_dir_io, "Dir I/O")
+    RUN_TEST(test_working_directory, "Working Directory")
     RUN_TEST(test_registry, "Registry")
     RUN_TEST(test_threads, "Threads")
     RUN_TEST(test_env, "Environment")