[TEST] no parallel test execution

Author: SeeSharpSoft

.github/workflows/PullRequest.yml

@@ -13,6 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     strategy:
+      max-parallel: 1
       matrix:
         include:
           - ideaVersion: IC-193.5233.102

src/main/java/net/seesharpsoft/intellij/plugins/csv/CsvStorageHelper.java

@@ -23,8 +23,8 @@ public static String getRelativeFileUrl(Project project, VirtualFile virtualFile
         String url = virtualFile.getUserData(RELATIVE_FILE_URL);
         if (url == null && project.getBasePath() != null) {
             String projectDir = PathUtil.getLocalPath(project.getBasePath());
-            url = PathUtil.getLocalPath(virtualFile.getPath())
-                    .replaceFirst("^" + Pattern.quote(projectDir), "");
+            url = Paths.get(PathUtil.getLocalPath(virtualFile.getPath())
+                    .replaceFirst("^" + Pattern.quote(projectDir), "")).toString();
             virtualFile.putUserData(RELATIVE_FILE_URL, url);
         }
         return url;