common/mdsal-uint24-netty/src/test/java/org/opendaylight/mdsal/uint24/netty/Uint24ByteBufUtilsTest.java

   1 /*
   2  * Copyright (c) 2019 PANTHEON.tech, s.r.o. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.mdsal.uint24.netty;
   9
  10 import static org.junit.Assert.assertEquals;
  11
  12 import io.netty.buffer.ByteBuf;
  13 import io.netty.buffer.Unpooled;
  14 import org.junit.Test;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.uint24.rev200104.Uint24;
  16 import org.opendaylight.yangtools.yang.common.Uint32;
  17
  18 public class Uint24ByteBufUtilsTest {
  19     private static final Uint24 ONE_TWO_THREE = new Uint24(Uint32.valueOf(0x010203));
  20
  21     @Test
  22     public void testRead() {
  23         final ByteBuf buf = Unpooled.buffer().writeMedium(0x010203);
  24         assertEquals(ONE_TWO_THREE, Uint24ByteBufUtils.readUint24(buf));
  25         assertEquals(0, buf.readableBytes());
  26     }
  27
  28     @Test
  29     public void testWrite() {
  30         final ByteBuf buf = Unpooled.buffer();
  31         Uint24ByteBufUtils.writeUint24(buf, ONE_TWO_THREE);
  32         assertMedium(buf);
  33     }
  34
  35     @Test
  36     public void testWriteMandatory() {
  37         final ByteBuf buf = Unpooled.buffer();
  38         Uint24ByteBufUtils.writeMandatoryUint24(buf, ONE_TWO_THREE, "foo");
  39         assertMedium(buf);
  40     }
  41
  42     @Test(expected = IllegalArgumentException.class)
  43     public void testWriteMandatoryNull() {
  44         Uint24ByteBufUtils.writeMandatoryUint24(Unpooled.buffer(), null, "foo");
  45     }
  46
  47     @Test
  48     public void testWriteOptional() {
  49         final ByteBuf buf = Unpooled.buffer();
  50         Uint24ByteBufUtils.writeOptionalUint24(buf, ONE_TWO_THREE);
  51         assertMedium(buf);
  52     }
  53
  54     @Test
  55     public void testWriteOptionalNull() {
  56         final ByteBuf buf = Unpooled.buffer();
  57         Uint24ByteBufUtils.writeOptionalUint24(buf, null);
  58         assertEquals(0, buf.readableBytes());
  59     }
  60
  61     @Test
  62     public void testWriteOrZero() {
  63         final ByteBuf buf = Unpooled.buffer();
  64         Uint24ByteBufUtils.writeUint24OrZero(buf, ONE_TWO_THREE);
  65         assertMedium(buf);
  66     }
  67
  68     @Test
  69     public void testWriteOrZeroNull() {
  70         final ByteBuf buf = Unpooled.buffer();
  71         Uint24ByteBufUtils.writeUint24OrZero(buf, null);
  72         assertMedium(buf, 0);
  73     }
  74
  75     private static void assertMedium(final ByteBuf buf) {
  76         assertMedium(buf, 0x010203);
  77     }
  78
  79     private static void assertMedium(final ByteBuf buf, final int value) {
  80         assertEquals(3, buf.readableBytes());
  81         assertEquals(value, buf.readMedium());
  82     }
  83 }