Examples with PipedInputStream java.io.PipedInputStream used on opensource projects

Example 76 with PipedInputStream

use of java.io.PipedInputStream in project j2objc by google.

the class OldAndroidPipedStreamTest method testC.

public void testC() throws Exception {
    final PipedInputStream in = new PipedInputStream();
    final PipedOutputStream out = new PipedOutputStream(in);
    final byte[] readBytes = new byte[1024 * 2];
    assertEquals(0, in.available());
    TestThread reader, writer;
    reader = new TestThread() {

        @Override
        public void runTest() throws Exception {
            int ret;
            for (; ; ) {
                int nread = 0;
                while (nread < readBytes.length) {
                    ret = in.read(readBytes, nread, readBytes.length - nread);
                    if (ret == -1) {
                        return;
                    }
                    nread += ret;
                }
            }
        }
    };
    reader.start();
    writer = new TestThread() {

        Fibonacci fib = new Fibonacci();

        @Override
        public void runTest() throws Exception {
            byte[] writeBytes = new byte[1024 * 2];
            for (int i = 0; i < (writeBytes.length - 4); i += 4) {
                int toWrite = fib.next();
                writeBytes[i] = (byte) (toWrite >> 24);
                writeBytes[i + 1] = (byte) (toWrite >> 16);
                writeBytes[i + 2] = (byte) (toWrite >> 8);
                writeBytes[i + 3] = (byte) (toWrite);
            }
            out.write(writeBytes, 0, writeBytes.length);
            out.close();
        }
    };
    writer.start();
    for (; ; ) {
        try {
            reader.join(60 * 1000);
            writer.join(1000);
            break;
        } catch (InterruptedException ex) {
        }
    }
    if (reader.exception != null) {
        throw new Exception(reader.exception);
    }
    if (writer.exception != null) {
        throw new Exception(writer.exception);
    }
    Fibonacci fib = new Fibonacci();
    for (int i = 0; i < (readBytes.length - 4); i += 4) {
        int readInt = (((int) readBytes[i] & 0xff) << 24) | (((int) readBytes[i + 1] & 0xff) << 16) | (((int) readBytes[i + 2] & 0xff) << 8) | (((int) readBytes[i + 3] & 0xff));
        assertEquals("Error at " + i, readInt, fib.next());
    }
}

Example 77 with PipedInputStream

use of java.io.PipedInputStream in project j2objc by google.

the class OldPipedOutputStreamTest method test_connectLjava_io_PipedInputStream.

public void test_connectLjava_io_PipedInputStream() throws IOException {
    out = new PipedOutputStream();
    try {
        out.connect(new PipedInputStream());
    } catch (Exception e) {
        fail("Test 1: Unexpected exception when connecting: " + e.getLocalizedMessage());
    }
    try {
        out.write('B');
    } catch (IOException e) {
        fail("Test 2: Unexpected IOException when writing after connecting.");
    }
    try {
        out.connect(new PipedInputStream());
        fail("Test 3: IOException expected when reconnecting the stream.");
    } catch (IOException e) {
    // Expected.
    }
    try {
        out.connect(null);
        fail("Test 4: NullPointerException expected.");
    } catch (NullPointerException e) {
    // Expected.
    }
}

Example 78 with PipedInputStream

use of java.io.PipedInputStream in project j2objc by google.

the class DeflaterOutputStreamTest method createInflaterStream.

/**
     * Creates an optionally-flushing deflater stream, writes some bytes to it,
     * and flushes it. Returns an inflater stream that reads this deflater's
     * output.
     *
     * <p>These bytes are written on a separate thread so that when the inflater
     * stream is read, that read will fail when no bytes are available. Failing
     * takes 3 seconds, co-ordinated by PipedInputStream's 'broken pipe'
     * timeout. The 3 second delay is unfortunate but seems to be the easiest
     * way demonstrate that data is unavailable. Ie. other techniques will cause
     * the dry read to block indefinitely.
     */
static InputStream createInflaterStream(final Class<?> c, final boolean flushing) throws Exception {
    ExecutorService executor = Executors.newSingleThreadExecutor();
    final PipedOutputStream pout = new PipedOutputStream();
    PipedInputStream pin = new PipedInputStream(pout);
    executor.submit(new Callable<Void>() {

        public Void call() throws Exception {
            OutputStream out;
            if (c == DeflaterOutputStream.class) {
                out = new DeflaterOutputStream(pout, flushing);
            } else if (c == GZIPOutputStream.class) {
                out = new GZIPOutputStream(pout, flushing);
            } else {
                throw new AssertionError();
            }
            out.write(1);
            out.write(2);
            out.write(3);
            out.flush();
            return null;
        }
    }).get();
    executor.shutdown();
    if (c == DeflaterOutputStream.class) {
        return new InflaterInputStream(pin);
    } else if (c == GZIPOutputStream.class) {
        return new GZIPInputStream(pin);
    } else {
        throw new AssertionError();
    }
}

Example 79 with PipedInputStream

use of java.io.PipedInputStream in project robovm by robovm.

the class ScannerTest method test_hasNextLine_sequence.

public void test_hasNextLine_sequence() throws IOException {
    final PipedInputStream pis = new PipedInputStream();
    final PipedOutputStream pos = new PipedOutputStream();
    final Scanner scanner = new Scanner(pis);
    pis.connect(pos);
    final List<String> result = new ArrayList<String>();
    Thread thread = new Thread(new Runnable() {

        public void run() {
            while (scanner.hasNextLine()) {
                String line = scanner.nextLine();
                result.add(line);
            }
        }
    });
    thread.start();
    for (int index = 0; index < 5; index++) {
        String line = "line" + index + "\n";
        pos.write(line.getBytes());
        pos.flush();
        try {
            Thread.sleep(1000);
        } catch (InterruptedException ignored) {
        }
        assertEquals(index + 1, result.size());
    }
    pis.close();
    pos.close();
    try {
        thread.join(1000);
    } catch (InterruptedException ignored) {
    }
    assertFalse(scanner.hasNextLine());
}

Example 80 with PipedInputStream

use of java.io.PipedInputStream in project robovm by robovm.

the class ScannerTest method test_ConstructorLjava_io_InputStream.

/**
     * @tests java.util.Scanner#Scanner(InputStream)
     */
public void test_ConstructorLjava_io_InputStream() {
    s = new Scanner(new PipedInputStream());
    assertNotNull(s);
    s.close();
    // Scanner(InputStream)
    try {
        s = new Scanner((InputStream) null);
        fail();
    } catch (NullPointerException expected) {
    }
// TODO: test if the default charset is used.
}