Examples of org.apache.mina.core.buffer.IoBuffer.sweep()

Class org.apache.mina.core.buffer.IoBuffer

Examples of org.apache.mina.core.buffer.IoBuffer.sweep()

org.apache.mina.core.buffer.IoBuffer.sweep()
Clears this buffer and fills its content with NUL. The position is set to zero, the limit is set to the capacity, and the mark is discarded.

    public void testAutoShrink() throws Exception {
        IoBuffer buf = IoBuffer.allocate(8).setAutoShrink(true);


        // Make sure the buffer doesn't shrink too much (less than the initial
        // capacity.)
        buf.sweep((byte) 1);
        buf.fill(7);
        buf.compact();
        assertEquals(8, buf.capacity());
        assertEquals(1, buf.position());
        assertEquals(8, buf.limit());

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        // Expand the buffer.
        buf.capacity(32).clear();
        assertEquals(32, buf.capacity());


        // Make sure the buffer shrinks when only 1/4 is being used.
        buf.sweep((byte) 1);
        buf.fill(24);
        buf.compact();
        assertEquals(16, buf.capacity());
        assertEquals(8, buf.position());
        assertEquals(16, buf.limit());

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        // Expand the buffer.
        buf.capacity(32).clear();
        assertEquals(32, buf.capacity());


        // Make sure the buffer shrinks when only 1/8 is being used.
        buf.sweep((byte) 1);
        buf.fill(28);
        buf.compact();
        assertEquals(8, buf.capacity());
        assertEquals(4, buf.position());
        assertEquals(8, buf.limit());

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        // Expand the buffer.
        buf.capacity(32).clear();
        assertEquals(32, buf.capacity());


        // Make sure the buffer doesn't shrink when more than 1/4 is being used.
        buf.sweep((byte) 1);
        buf.fill(23);
        buf.compact();
        assertEquals(32, buf.capacity());
        assertEquals(9, buf.position());
        assertEquals(32, buf.limit());

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        buf.putPrefixedString("A", 1, encoder);
        assertEquals(2, buf.position());
        assertEquals(1, buf.get(0));
        assertEquals('A', buf.get(1));


        buf.sweep();
        buf.putPrefixedString("A", 2, encoder);
        assertEquals(3, buf.position());
        assertEquals(0, buf.get(0));
        assertEquals(1, buf.get(1));
        assertEquals('A', buf.get(2));

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        assertEquals(3, buf.position());
        assertEquals(0, buf.get(0));
        assertEquals(1, buf.get(1));
        assertEquals('A', buf.get(2));


        buf.sweep();
        buf.putPrefixedString("A", 4, encoder);
        assertEquals(5, buf.position());
        assertEquals(0, buf.get(0));
        assertEquals(0, buf.get(1));
        assertEquals(0, buf.get(2));

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        assertEquals(3, buf.position());
        assertEquals(2, buf.get(0));
        assertEquals('A', buf.get(1));
        assertEquals(' ', buf.get(2));


        buf.sweep();
        buf.putPrefixedString("A", 1, 4, (byte) 32, encoder);
        assertEquals(5, buf.position());
        assertEquals(4, buf.get(0));
        assertEquals('A', buf.get(1));
        assertEquals(' ', buf.get(2));

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        buf.clear();
        assertEquals(0xdeadbeef, buf.getInt());
        assertEquals(4, buf.position());
        assertEquals(4, buf.limit());


        buf.sweep();
        assertEquals(0, buf.position());
        assertEquals(4, buf.limit());
        assertEquals(0x0, buf.getInt());
    }

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        buf.clear();
        assertEquals(0xdeadbeef, buf.getInt());
        assertEquals(4, buf.position());
        assertEquals(4, buf.limit());


        buf.sweep((byte) 0x45);
        assertEquals(0, buf.position());
        assertEquals(4, buf.limit());
        assertEquals(0x45454545, buf.getInt());
    }

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        buf.putPrefixedString("A", 1, encoder);
        assertEquals(2, buf.position());
        assertEquals(1, buf.get(0));
        assertEquals('A', buf.get(1));


        buf.sweep();
        buf.putPrefixedString("A", 2, encoder);
        assertEquals(3, buf.position());
        assertEquals(0, buf.get(0));
        assertEquals(1, buf.get(1));
        assertEquals('A', buf.get(2));

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