public void allocationQuantum(int allocationQuantum) {
        checkPositive(allocationQuantum, "allocationQuantum");
        this.allocationQuantum = allocationQuantum;
    }
@Test
    public void writeShouldFavorPriority() throws Http2Exception {
        // Root the streams at the connection and assign weights.
        setPriority(STREAM_A, 0, (short) 50, false);
        setPriority(STREAM_B, 0, (short) 200, false);
        setPriority(STREAM_C, 0, (short) 100, false);
        setPriority(STREAM_D, 0, (short) 100, false);

        initState(STREAM_A, 1000, true);
        initState(STREAM_B, 1000, true);
        initState(STREAM_C, 1000, false);
        initState(STREAM_D, 1000, false);

        // Set allocation quantum to 1 so it is easier to see the ratio of total bytes written between each stream.
        distributor.allocationQuantum(1);

        assertTrue(write(100));
        assertEquals(20, captureWrites(STREAM_A));
        verifyWrite(times(20), STREAM_A, 1);
        assertEquals(80, captureWrites(STREAM_B));
        verifyWrite(times(0), STREAM_B, 1);
        verifyNeverWrite(STREAM_C);
        verifyNeverWrite(STREAM_D);

        assertTrue(write(100));
        assertEquals(40, captureWrites(STREAM_A));
        verifyWrite(times(40), STREAM_A, 1);
        assertEquals(160, captureWrites(STREAM_B));
        verifyWrite(atMost(1), STREAM_B, 1);
        verifyNeverWrite(STREAM_C);
        verifyNeverWrite(STREAM_D);

        assertTrue(write(1050));
        assertEquals(250, captureWrites(STREAM_A));
        verifyWrite(times(250), STREAM_A, 1);
        assertEquals(1000, captureWrites(STREAM_B));
        verifyWrite(atMost(2), STREAM_B, 1);
        verifyNeverWrite(STREAM_C);
        verifyNeverWrite(STREAM_D);

        assertFalse(write(750));
        assertEquals(1000, captureWrites(STREAM_A));
        verifyWrite(times(1), STREAM_A, 750);
        assertEquals(1000, captureWrites(STREAM_B));
        verifyWrite(times(0), STREAM_B, 0);
        verifyNeverWrite(STREAM_C);
        verifyNeverWrite(STREAM_D);
    }