125 lines
3.8 KiB
Java
125 lines
3.8 KiB
Java
/*
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* Copyright 2015 Christian Basler
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package ch.dissem.bitmessage.utils;
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import org.junit.Test;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import static org.junit.Assert.assertEquals;
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public class EncodeTest {
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@Test
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public void testUint8() throws IOException {
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ByteArrayOutputStream stream = new ByteArrayOutputStream();
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Encode.int8(0, stream);
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checkBytes(stream, 0);
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stream = new ByteArrayOutputStream();
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Encode.int8(255, stream);
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checkBytes(stream, 255);
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}
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@Test
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public void testUint16() throws IOException {
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ByteArrayOutputStream stream = new ByteArrayOutputStream();
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Encode.int16(0, stream);
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checkBytes(stream, 0, 0);
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stream = new ByteArrayOutputStream();
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Encode.int16(513, stream);
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checkBytes(stream, 2, 1);
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}
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@Test
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public void testUint32() throws IOException {
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ByteArrayOutputStream stream = new ByteArrayOutputStream();
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Encode.int32(0, stream);
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checkBytes(stream, 0, 0, 0, 0);
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stream = new ByteArrayOutputStream();
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Encode.int32(67305985, stream);
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checkBytes(stream, 4, 3, 2, 1);
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stream = new ByteArrayOutputStream();
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Encode.int32(3355443201l, stream);
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checkBytes(stream, 200, 0, 0, 1);
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}
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@Test
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public void testUint64() throws IOException {
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ByteArrayOutputStream stream = new ByteArrayOutputStream();
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Encode.int64(0, stream);
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checkBytes(stream, 0, 0, 0, 0, 0, 0, 0, 0);
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stream = new ByteArrayOutputStream();
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Encode.int64(578437695752307201L, stream);
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checkBytes(stream, 8, 7, 6, 5, 4, 3, 2, 1);
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stream = new ByteArrayOutputStream();
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// 200 * 72057594037927936L + 1
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Encode.int64(0xc800000000000001L, stream);
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checkBytes(stream, 200, 0, 0, 0, 0, 0, 0, 1);
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}
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@Test
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public void testVarInt() throws IOException {
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ByteArrayOutputStream stream = new ByteArrayOutputStream();
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Encode.varInt(0, stream);
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checkBytes(stream, 0);
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stream = new ByteArrayOutputStream();
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Encode.varInt(252, stream);
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checkBytes(stream, 252);
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stream = new ByteArrayOutputStream();
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Encode.varInt(253, stream);
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checkBytes(stream, 253, 0, 253);
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stream = new ByteArrayOutputStream();
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Encode.varInt(65535, stream);
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checkBytes(stream, 253, 255, 255);
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stream = new ByteArrayOutputStream();
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Encode.varInt(65536, stream);
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checkBytes(stream, 254, 0, 1, 0, 0);
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stream = new ByteArrayOutputStream();
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Encode.varInt(4294967295L, stream);
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checkBytes(stream, 254, 255, 255, 255, 255);
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stream = new ByteArrayOutputStream();
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Encode.varInt(4294967296L, stream);
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checkBytes(stream, 255, 0, 0, 0, 1, 0, 0, 0, 0);
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stream = new ByteArrayOutputStream();
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Encode.varInt(-1L, stream);
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checkBytes(stream, 255, 255, 255, 255, 255, 255, 255, 255, 255);
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}
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public void checkBytes(ByteArrayOutputStream stream, int... bytes) {
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assertEquals(bytes.length, stream.size());
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byte[] streamBytes = stream.toByteArray();
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for (int i = 0; i < bytes.length; i++) {
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assertEquals((byte) bytes[i], streamBytes[i]);
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}
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}
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}
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