| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.cassandra.io.util; |
| |
| import java.io.IOException; |
| import java.math.BigInteger; |
| |
| import org.apache.commons.io.EndianUtils; |
| import org.junit.Test; |
| |
| import org.apache.cassandra.utils.ByteArrayUtil; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| import org.apache.cassandra.utils.Generators; |
| import org.apache.cassandra.utils.Throwables; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.quicktheories.QuickTheory.qt; |
| import static org.quicktheories.generators.SourceDSL.longs; |
| |
| public class SizedIntsTest |
| { |
| |
| @Test |
| public void nonZeroSize() |
| { |
| assertEquals(1, SizedInts.nonZeroSize(0)); |
| assertEquals(1, SizedInts.nonZeroSize(1)); |
| assertEquals(1, SizedInts.nonZeroSize(127)); |
| assertEquals(1, SizedInts.nonZeroSize(-127)); |
| assertEquals(2, SizedInts.nonZeroSize(128)); |
| assertEquals(1, SizedInts.nonZeroSize(-128)); |
| assertEquals(2, SizedInts.nonZeroSize(-129)); |
| assertEquals(8, SizedInts.nonZeroSize(0x7fffffffffffffffL)); |
| assertEquals(8, SizedInts.nonZeroSize(0x7ffffffffffffffL)); |
| assertEquals(7, SizedInts.nonZeroSize(0x7fffffffffffffL)); |
| assertEquals(7, SizedInts.nonZeroSize(0x7ffffffffffffL)); |
| assertEquals(6, SizedInts.nonZeroSize(0x7fffffffffffL)); |
| assertEquals(6, SizedInts.nonZeroSize(0x7ffffffffffL)); |
| assertEquals(5, SizedInts.nonZeroSize(0x7fffffffffL)); |
| assertEquals(5, SizedInts.nonZeroSize(0x7ffffffffL)); |
| assertEquals(4, SizedInts.nonZeroSize(0x7fffffffL)); |
| assertEquals(4, SizedInts.nonZeroSize(0x7ffffffL)); |
| assertEquals(3, SizedInts.nonZeroSize(0x7fffffL)); |
| assertEquals(3, SizedInts.nonZeroSize(0x7ffffL)); |
| assertEquals(2, SizedInts.nonZeroSize(0x7fffL)); |
| assertEquals(2, SizedInts.nonZeroSize(0x7ffL)); |
| assertEquals(1, SizedInts.nonZeroSize(0x7fL)); |
| assertEquals(1, SizedInts.nonZeroSize(0x7L)); |
| } |
| |
| @Test |
| public void sizeAllowingZero() |
| { |
| assertEquals(0, SizedInts.sizeAllowingZero(0)); |
| assertEquals(1, SizedInts.sizeAllowingZero(1)); |
| assertEquals(1, SizedInts.sizeAllowingZero(127)); |
| assertEquals(1, SizedInts.sizeAllowingZero(-127)); |
| assertEquals(2, SizedInts.sizeAllowingZero(128)); |
| assertEquals(1, SizedInts.sizeAllowingZero(-128)); |
| assertEquals(2, SizedInts.sizeAllowingZero(-129)); |
| } |
| |
| |
| @Test |
| public void readWrite() |
| { |
| try (DataOutputBuffer out = new DataOutputBuffer(8)) |
| { |
| qt().forAll(Generators.bytes(1, 8).map(bb -> new BigInteger(ByteBufferUtil.getArray(bb)).longValue()).mix(longs().all())).check(v -> { |
| out.clear(); |
| try |
| { |
| SizedInts.write(out, v, SizedInts.sizeAllowingZero(v)); |
| out.flush(); |
| long r = SizedInts.read(out.asNewBuffer(), 0, SizedInts.sizeAllowingZero(v)); |
| return v == r; |
| } |
| catch (IOException e) |
| { |
| throw Throwables.cleaned(e); |
| } |
| }); |
| } |
| } |
| |
| @Test |
| public void readWriteUnsigned() |
| { |
| try (DataOutputBuffer out = new DataOutputBuffer(8)) |
| { |
| byte[] buf1 = new byte[8]; |
| byte[] buf2 = new byte[8]; |
| qt().forAll(Generators.bytes(1, 8).map(bb -> new BigInteger(ByteBufferUtil.getArray(bb)).longValue()).mix(longs().all())).check(v -> { |
| out.clear(); |
| try |
| { |
| int size = SizedInts.sizeAllowingZero(v); |
| EndianUtils.writeSwappedLong(buf1, 0, v); |
| SizedInts.write(out, v, size); |
| out.flush(); |
| long r = SizedInts.readUnsigned(out.asNewBuffer(), 0, size); |
| EndianUtils.writeSwappedLong(buf2, 0, r); |
| return ByteArrayUtil.compareUnsigned(buf1, 0, buf2, 0, size) == 0; |
| } |
| catch (IOException e) |
| { |
| throw Throwables.cleaned(e); |
| } |
| }); |
| } |
| } |
| } |