String (final boolean version4) { String url = version4 ? JavaSdkUtil.getJunit4JarPath() : JavaSdkUtil.getJunit3JarPath(); final VirtualFile localFile = VirtualFileManager.getInstance().findFileByUrl(pathToUrl(url)); if (localFile != null) { final VirtualFile jarFile = JarFileSystem.getInstance().getJarRootForLocalFile(localFile); url = jarFile != null ? jarFile.getUrl() : localFile.getUrl(); } return url; }