update project_test.py for another slnx test

Author: IOBYTE

lib/importproject.cpp

@@ -513,13 +513,13 @@ bool ImportProject::importSlnx(const std::string& filename, const std::vector<st
     tinyxml2::XMLDocument doc;
     const tinyxml2::XMLError error = doc.LoadFile(filename.c_str());
     if (error != tinyxml2::XML_SUCCESS) {
-        errors.emplace_back(std::string("Visual Studio project file is not a valid XML - ") + tinyxml2::XMLDocument::ErrorIDToName(error));
+        errors.emplace_back(std::string("Visual Studio solution file is not a valid XML - ") + tinyxml2::XMLDocument::ErrorIDToName(error));
         return false;
     }
 
     const tinyxml2::XMLElement* const rootnode = doc.FirstChildElement();
     if (rootnode == nullptr) {
-        errors.emplace_back("Visual Studio project file has no XML root node");
+        errors.emplace_back("Visual Studio solution file has no XML root node");
         return false;
     }
 

test/cli/project_test.py

@@ -33,6 +33,7 @@ def __test_project_error(tmpdir, ext, content, expected):
 @pytest.mark.parametrize("project_ext, expected", [
     ("json", "compilation database is not a JSON array"),
     ("sln", "Visual Studio solution file is empty"),
+    ("slnx", "Visual Studio solution file is not a valid XML - XML_ERROR_EMPTY_DOCUMENT"),
     ("vcxproj", "Visual Studio project file is not a valid XML - XML_ERROR_EMPTY_DOCUMENT"),
     ("bpr", "Borland project file is not a valid XML - XML_ERROR_EMPTY_DOCUMENT"),
     ("cppcheck", "Cppcheck GUI project file is not a valid XML - XML_ERROR_EMPTY_DOCUMENT")