cos.close();

        // ## Assert ##
        // The temp file should have been cleaned up by close()
        assertFalse(cos.isInMemory());
    }

    @Test
    public void testCloseMultipleTimes() throws IOException {
        // ## Arrange ##
        ContentOutputStream cos = new ContentOutputStream(5, Curl.tmpDir);
        cos.write(new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }); // exceeds threshold