/*
* Copyright 2011 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.bitcoinj.core;
import junit.framework.TestCase;
import org.junit.Test;
public class VarIntTest extends TestCase {
@Test
public void testBytes() throws Exception {
VarInt a = new VarInt(10); // with widening conversion
assertEquals(1, a.getSizeInBytes());
assertEquals(1, a.encode().length);
assertEquals(10, new VarInt(a.encode(), 0).value);
}
@Test
public void testShorts() throws Exception {
VarInt a = new VarInt(64000); // with widening conversion
assertEquals(3, a.getSizeInBytes());
assertEquals(3, a.encode().length);
assertEquals(64000, new VarInt(a.encode(), 0).value);
}
@Test
public void testShortFFFF() throws Exception {
VarInt a = new VarInt(0xFFFFL);
assertEquals(3, a.getSizeInBytes());
assertEquals(3, a.encode().length);
assertEquals(0xFFFFL, new VarInt(a.encode(), 0).value);
}
@Test
public void testInts() throws Exception {
VarInt a = new VarInt(0xAABBCCDDL);
assertEquals(5, a.getSizeInBytes());
assertEquals(5, a.encode().length);
byte[] bytes = a.encode();
assertEquals(0xAABBCCDDL, 0xFFFFFFFFL & new VarInt(bytes, 0).value);
}
@Test
public void testIntFFFFFFFF() throws Exception {
VarInt a = new VarInt(0xFFFFFFFFL);
assertEquals(5, a.getSizeInBytes());
assertEquals(5, a.encode().length);
byte[] bytes = a.encode();
assertEquals(0xFFFFFFFFL, 0xFFFFFFFFL & new VarInt(bytes, 0).value);
}
@Test
public void testLong() throws Exception {
VarInt a = new VarInt(0xCAFEBABEDEADBEEFL);
assertEquals(9, a.getSizeInBytes());
assertEquals(9, a.encode().length);
byte[] bytes = a.encode();
assertEquals(0xCAFEBABEDEADBEEFL, new VarInt(bytes, 0).value);
}
@Test
public void testSizeOfNegativeInt() throws Exception {
// shouldn't normally be passed, but at least stay consistent (bug regression test)
assertEquals(VarInt.sizeOf(-1), new VarInt(-1).encode().length);
}
}