Examples of java.io.PipedWriter

java.io.PipedWriter
PipedWriter is a class which places information on a communications pipe. When two threads want to pass data back and forth, one creates a piped writer and the other creates a piped reader. @see PipedReader

    public void test_close() throws Exception {
        // Test for method void java.io.PipedWriter.close()
        char[] buf = new char[10];
        "HelloWorld".getChars(0, 10, buf, 0);
        PipedReader rd = new PipedReader();
        pw = new PipedWriter(rd);
        reader = new PReader(rd);
        pw.close();
        try {
            pw.write(buf);
            fail("Should have thrown exception when attempting to write to closed writer.");

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    public void test_connectLjava_io_PipedReader() throws Exception {
        // Test for method void java.io.PipedWriter.connect(java.io.PipedReader)
        char[] buf = new char[10];
        "HelloWorld".getChars(0, 10, buf, 0);
        PipedReader rd = new PipedReader();
        pw = new PipedWriter();
        pw.connect(rd);
        rdrThread = new Thread(reader = new PReader(rd), "connect");
        rdrThread.start();
        pw.write(buf);
        pw.close();

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     */
    public void test_flush() throws Exception {
        // Test for method void java.io.PipedWriter.flush()
        char[] buf = new char[10];
        "HelloWorld".getChars(0, 10, buf, 0);
        pw = new PipedWriter();
        rdrThread = new Thread(reader = new PReader(pw), "flush");
        rdrThread.start();
        pw.write(buf);
        pw.flush();
        rdrThread.join(700);

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     */
    public void test_write$CII() throws Exception {
        // Test for method void java.io.PipedWriter.write(char [], int, int)
        char[] buf = new char[10];
        "HelloWorld".getChars(0, 10, buf, 0);
        pw = new PipedWriter();
        rdrThread = new Thread(reader = new PReader(pw), "writeCII");
        rdrThread.start();
        pw.write(buf, 0, 10);
        pw.close();
        rdrThread.join(1000);

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     * @tests java.io.PipedWriter#write(char[], int, int) Regression for
     *        HARMONY-387
     */
    public void test_write$CII_2() throws IOException {
        PipedReader pr = new PipedReader();
        PipedWriter obj = null;
        try {
            obj = new java.io.PipedWriter(pr);
            obj.write(new char[0], (int) 0, (int) -1);
            fail("IndexOutOfBoundsException expected");
        } catch (IndexOutOfBoundsException t) {
            assertEquals(
                    "IndexOutOfBoundsException rather than a subclass expected",
                    IndexOutOfBoundsException.class, t.getClass());

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    /**
     * @tests java.io.PipedWriter#write(char[], int, int)
     */
    public void test_write$CII_3() throws IOException {
        PipedReader pr = new PipedReader();
        PipedWriter obj = null;
        try {
            obj = new java.io.PipedWriter(pr);
            obj.write(new char[0], (int) -1, (int) 0);
            fail("IndexOutOfBoundsException expected");
        } catch (ArrayIndexOutOfBoundsException t) {
            fail("IndexOutOfBoundsException expected");
        } catch (IndexOutOfBoundsException t) {}
    }

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    /**
     * @tests java.io.PipedWriter#write(char[], int, int)
     */
    public void test_write$CII_4() throws IOException {
        PipedReader pr = new PipedReader();
        PipedWriter obj = null;
        try {
            obj = new java.io.PipedWriter(pr);
            obj.write(new char[0], (int) -1, (int) -1);
            fail("IndexOutOfBoundsException expected");
        } catch (ArrayIndexOutOfBoundsException t) {
            fail("IndexOutOfBoundsException expected");
        } catch (IndexOutOfBoundsException t) {}
    }

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    /**
     * @tests java.io.PipedWriter#write(char[], int, int)
     */
    public void test_write$CII_5() throws IOException {
        PipedReader pr = new PipedReader();
        PipedWriter obj = null;
        try {
            obj = new PipedWriter(pr);
            obj.write((char[]) null, (int) -1, (int) 0);
            fail("NullPointerException expected");
        } catch (IndexOutOfBoundsException t) {
            fail("NullPointerException expected");
        } catch (NullPointerException t) {}
    }

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    /**
     * @tests java.io.PipedWriter#write(char[], int, int)
     */
    public void test_write$CII_6() throws IOException {
        PipedReader pr = new PipedReader();
        PipedWriter obj = null;
        try {
            obj = new PipedWriter(pr);
            obj.write((char[]) null, (int) -1, (int) -1);
            fail("NullPointerException expected");
        } catch (IndexOutOfBoundsException t) {
            fail("NullPointerException expected");
        } catch (NullPointerException t) {}
    }

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     * @tests java.io.PipedWriter#write(char[], int, int)
     */
    public void test_write$CII_notConnected() throws IOException {
        // Regression test for Harmony-2404
        // create not connected pipe
        PipedWriter obj = new PipedWriter();


        // char array is null
        try {
            obj.write((char[]) null, 0, 1);
            fail("IOException expected");
        } catch (IOException ioe) {
            // expected
        }


        // negative offset
        try {
            obj.write( new char[] { 1 }, -10, 1);
            fail("IOException expected");
        } catch (IOException ioe) {
            // expected
        }


        // wrong offset
        try {
            obj.write( new char[] { 1 }, 10, 1);
            fail("IOException expected");
        } catch (IOException ioe) {
            // expected
        }


        // negative length
        try {
            obj.write( new char[] { 1 }, 0, -10);
            fail("IOException expected");
        } catch (IOException ioe) {
            // expected
        }


        // all valid params
        try {
            obj.write( new char[] { 1, 1 }, 0, 1);
            fail("IOException expected");
        } catch (IOException ioe) {
            // expected
        }
    }

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