try (InputStream in = file.getInputStream()) {
            String content = new String(in.readAllBytes(), "UTF-8");
            assertEquals(newContent, content);
        }
    }

    @Test
    void testFileDelete() throws Exception {
        long timestamp = System.currentTimeMillis();
        String filename = "delete_" + timestamp + ".txt";

        // Create a fresh context for this test to avoid handle conflicts