public class ContentOutputStream extends DeferredFileOutputStream {

    protected static final Logger logger = Logger.getLogger(ContentOutputStream.class.getName());

    protected static final String PREFIX = "curl4j-";

    protected static final String SUFFIX = ".tmp";

    protected boolean done = false;

    public ContentOutputStream(final int threshold, final File tmpDir) {

        ContentOutputStream cos = new ContentOutputStream(10, Curl.tmpDir);
        cos.write(new byte[] { 0, 1, 2, 3, 4 });
        assertFalse(cos.done);
        assertTrue(cos.isInMemory());
        cos.close();
        assertFalse(cos.done);
    }

    @Test
    public void inFile() throws IOException {
        ContentOutputStream cos = new ContentOutputStream(10, Curl.tmpDir);

import java.net.URL;
import java.util.Arrays;
import java.util.Objects;
import java.util.function.Consumer;
import java.util.logging.Logger;

import static org.codelibs.curl.io.ContentOutputStream.PREFIX;
import static org.codelibs.curl.io.ContentOutputStream.SUFFIX;
import static org.junit.Assert.assertEquals;

public class IOIntegrationTest {

    private static final Logger logger = Logger.getLogger(IOIntegrationTest.class.getName());

        }

        private void writeContent(final Supplier<InputStream> handler) {
            try (BufferedInputStream bis = new BufferedInputStream(handler.get());
                    ContentOutputStream dfos = new ContentOutputStream(threshold, Curl.tmpDir)) {
                final byte[] bytes = new byte[4096];
                int length = bis.read(bytes);
                while (length != -1) {
                    if (length != 0) {