test: avoid read check when running as root (#14884)

Author: summer-boythink

packages/vite/src/node/__tests__/utils.spec.ts

@@ -296,11 +296,14 @@ describe('isFileReadable', () => {
       fs.chmodSync(testFile, '400')
       expect(isFileReadable(testFile)).toBe(true)
     })
-    test('file without read permission', async () => {
-      fs.chmodSync(testFile, '044')
-      expect(isFileReadable(testFile)).toBe(false)
-      fs.chmodSync(testFile, '644')
-    })
+    test.runIf(process.getuid && process.getuid() !== 0)(
+      'file without read permission',
+      async () => {
+        fs.chmodSync(testFile, '044')
+        expect(isFileReadable(testFile)).toBe(false)
+        fs.chmodSync(testFile, '644')
+      },
+    )
   }
 })