fix: test fails in mac/linux desktop

Author: abose

test/test-dir.browser.js

@@ -1,8 +1,7 @@
 /* global expect , Filer, fs, waitForTrue, TEST_TYPE_FS_ACCESS, TEST_TYPE_FILER, TEST_TYPE_TAURI, TEST_TYPE_TAURI_WS, path, iconv*/
 
-const IS_WINDOWS = navigator.userAgent.includes('Windows');
-
 function _setupTests(testType) {
+    const IS_WINDOWS = navigator.userAgent.includes('Windows');
     let testPath;
 
     function consoleLogToShell(message) {

test/test-file.browser.js

@@ -1,8 +1,7 @@
 /* global expect , Filer, fs, TEST_TYPE_FS_ACCESS, TEST_TYPE_FILER, TEST_TYPE_TAURI, TEST_TYPE_TAURI_WS*/
 
-const IS_WINDOWS = navigator.userAgent.includes('Windows');
-
 function _setupTests(testType) {
+    const IS_WINDOWS = navigator.userAgent.includes('Windows');
     let testPath;
 
     function consoleLogToShell(message) {