Package java.util.zip

Examples of java.util.zip.DeflaterInputStream

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{
  public final static String COMPRESSION_TYPE_DEFLATE = "dfl";

  @Override
  public InputStream compress(InputStream in) {
    return new DeflaterInputStream(in);
  }
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    /**
     * @tests DeflaterInputStream#available()
     */
    public void testAvailable() throws IOException {
        byte[] buf = new byte[1024];
        DeflaterInputStream dis = new DeflaterInputStream(is);
        assertEquals(1, dis.available());
        assertEquals(120, dis.read());
        assertEquals(1, dis.available());
        assertEquals(22, dis.read(buf, 0, 1024));
        assertEquals(1, dis.available());
        assertEquals(-1, dis.read());
        assertEquals(0, dis.available());
        dis.close();
        try {
            dis.available();
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
    }
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    /**
     * @tests DeflaterInputStream#close()
     */
    public void testClose() throws IOException {
        byte[] buf = new byte[1024];
        DeflaterInputStream dis = new DeflaterInputStream(is);
        assertEquals(1, dis.available());
        dis.close();
        try {
            dis.available();
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
        try {
            dis.read(buf, 0, 1024);
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
        // can close after close
        dis.close();
    }
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    /**
     * @tests DeflaterInputStream#mark()
     */
    public void testMark() throws IOException {
        // mark do nothing
        DeflaterInputStream dis = new DeflaterInputStream(is);
        dis.mark(-1);
        dis.mark(0);
        dis.mark(1);
        dis.close();
        dis.mark(1);
    }
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    /**
     * @tests DeflaterInputStream#markSupported()
     */
    public void testMarkSupported() throws IOException {
        DeflaterInputStream dis = new DeflaterInputStream(is);
        assertFalse(dis.markSupported());
        dis.close();
        assertFalse(dis.markSupported());
    }
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    /**
     * @tests DeflaterInputStream#read()
     */
    public void testRead() throws IOException {
        DeflaterInputStream dis = new DeflaterInputStream(is);
        assertEquals(1, dis.available());
        assertEquals(120, dis.read());
        assertEquals(1, dis.available());
        assertEquals(156, dis.read());
        assertEquals(1, dis.available());
        assertEquals(243, dis.read());
        assertEquals(1, dis.available());
        dis.close();
        try {
            dis.read();
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
    }
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     * @tests DeflaterInputStream#read(byte[],int,int)
     */
    public void testReadByteArrayIntInt() throws IOException {
        byte[] buf1 = new byte[256];
        byte[] buf2 = new byte[256];
        DeflaterInputStream dis = new DeflaterInputStream(is);
        assertEquals(23, dis.read(buf1, 0, 256));
        dis = new DeflaterInputStream(is);
        assertEquals(8, dis.read(buf2, 0, 256));
        is = new ByteArrayInputStream(testStr.getBytes("UTF-8"));
        dis = new DeflaterInputStream(is);
        assertEquals(1, dis.available());
        assertEquals(120, dis.read());
        assertEquals(1, dis.available());
        assertEquals(22, dis.read(buf2, 0, 256));
        assertEquals(1, dis.available());
        assertEquals(-1, dis.read());
        assertEquals(0, dis.available());
        try {
            dis.read(buf1, 0, 512);
            fail("should throw IndexOutOfBoundsException");
        } catch (IndexOutOfBoundsException e) {
            // expected
        }
        try {
            dis.read(null, 0, 0);
            fail("should throw NullPointerException");
        } catch (NullPointerException e) {
            // expected
        }
        try {
            dis.read(null, -1, 0);
            fail("should throw NullPointerException");
        } catch (NullPointerException e) {
            // expected
        }
        try {
            dis.read(null, -1, -1);
            fail("should throw NullPointerException");
        } catch (NullPointerException e) {
            // expected
        }
        try {
            dis.read(buf1, -1, -1);
            fail("should throw IndexOutOfBoundsException");
        } catch (IndexOutOfBoundsException e) {
            // expected
        }
        try {
            dis.read(buf1, 0, -1);
            fail("should throw IndexOutOfBoundsException");
        } catch (IndexOutOfBoundsException e) {
            // expected
        }
        dis.close();
        try {
            dis.read(buf1, 0, 512);
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
        try {
            dis.read(buf1, 0, 1);
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
        try {
            dis.read(null, 0, 0);
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
        try {
            dis.read(null, -1, 0);
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
        try {
            dis.read(null, -1, -1);
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
        try {
            dis.read(buf1, -1, -1);
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
        try {
            dis.read(buf1, 0, -1);
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
    }
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    /**
     * @tests DeflaterInputStream#reset()
     */
    public void testReset() throws IOException {
        DeflaterInputStream dis = new DeflaterInputStream(is);
        try {
            dis.reset();
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
        dis.close();
        try {
            dis.reset();
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
    }
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    /**
     * @tests DeflaterInputStream#skip()
     */
    public void testSkip() throws IOException {
        byte[] buf = new byte[1024];
        DeflaterInputStream dis = new DeflaterInputStream(is);
        assertEquals(1, dis.available());
        dis.skip(1);
        assertEquals(1, dis.available());
        assertEquals(22, dis.read(buf, 0, 1024));
        assertEquals(1, dis.available());
        dis.skip(1);
        assertEquals(0, dis.available());
        is = new ByteArrayInputStream(testStr.getBytes("UTF-8"));
        dis = new DeflaterInputStream(is);
        assertEquals(1, dis.available());
        dis.skip(56);
        assertEquals(0, dis.available());
        assertEquals(-1, dis.read(buf, 0, 1024));
        try {
            dis.skip(-1);
            fail("should throw IllegalArgumentException");
        } catch (IllegalArgumentException e) {
            // expected
        }
        assertEquals(0, dis.available());
        // can still skip
        dis.skip(1);
        dis.close();
        try {
            dis.skip(1);
            fail("should throw IOException");
        } catch (IOException e) {
            // expected
        }
        try {
            dis.skip(-1);
            fail("should throw IllegalArgumentException");
        } catch (IllegalArgumentException e) {
            // expected
        }

        is = new ByteArrayInputStream(testStr.getBytes("UTF-8"));
        dis = new DeflaterInputStream(is);
        assertEquals(23, dis.skip(Long.MAX_VALUE));
        assertEquals(0, dis.available());
    }
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    /**
     * @tests DeflaterInputStream#DeflaterInputStream(InputStream)
     */
    public void testDeflaterInputStreamInputStream() {
        // ok
        new DeflaterInputStream(is);
        // fail
        try {
            new DeflaterInputStream(null);
            fail("should throw NullPointerException");
        } catch (NullPointerException e) {
            // expected
        }
    }
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