assertFalse(cos.isInMemory());
        assertFalse(cos.done);
        File file = cos.getFile();
        assertTrue(file.exists());
        cos.close();
    }

    @Test
    public void testExactThreshold() throws IOException {
        // Writing exactly threshold bytes should stay in memory
        ContentOutputStream cos = new ContentOutputStream(5, Curl.tmpDir);
        cos.write(new byte[] { 0, 1, 2, 3, 4 });