test/cli/project_test.py: adjusted results for execution on Windows

lib/importproject.cpp

@@ -455,9 +455,11 @@ bool ImportProject::importSln(std::istream &istr, const std::string &path, const
         if (pos1 == std::string::npos)
             continue;
         std::string vcxproj(line.substr(pos1+1, pos-pos1+7));
+        vcxproj = Path::toNativeSeparators(std::move(vcxproj));
         if (!Path::isAbsolute(vcxproj))
             vcxproj = path + vcxproj;
-        if (!importVcxproj(Path::fromNativeSeparators(vcxproj), variables, emptyString, fileFilters)) {
+        vcxproj = Path::fromNativeSeparators(std::move(vcxproj));
+        if (!importVcxproj(vcxproj, variables, emptyString, fileFilters)) {
             printError("failed to load '" + vcxproj + "' from Visual Studio solution");
             return false;
         }

test/cli/project_test.py

@@ -3,6 +3,7 @@
 import pytest
 import os
 import json
+import sys
 from testutils import cppcheck
 
 
@@ -49,6 +50,8 @@ def test_json_entry_file_not_found(tmpdir):
     ]
 
     expected = "'{}' from compilation database does not exist".format(os.path.join(tmpdir, "bug1.cpp"))
+    if sys.platform == "win32":
+        expected = expected.replace('\\', '/')
 
     _test_project_error(tmpdir, "json", json.dumps(compilation_db), expected)
 
@@ -117,7 +120,9 @@ def test_sln_project_file_not_found(tmpdir):
               "EndProject\r\n"
 
     expected = "Visual Studio project file is not a valid XML - XML_ERROR_FILE_NOT_FOUND\n" \
-               "cppcheck: error: failed to load '{}' from Visual Studio solution".format(os.path.join(tmpdir, "cli\\cli.vcxproj"))
+               "cppcheck: error: failed to load '{}' from Visual Studio solution".format(os.path.join(tmpdir, "cli/cli.vcxproj"))
+    if sys.platform == "win32":
+        expected = expected.replace('\\', '/')
 
     _test_project_error(tmpdir, "sln", content, expected)