| /** |
| * 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.utils; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.charset.CharacterCodingException; |
| import java.nio.charset.StandardCharsets; |
| |
| import com.google.common.primitives.Ints; |
| import org.junit.Test; |
| |
| import java.util.Map; |
| import java.util.TreeMap; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.fail; |
| |
| public class FBUtilitiesTest |
| { |
| @Test |
| public void testCompareByteSubArrays() |
| { |
| ByteBuffer bytes = ByteBuffer.allocate(16); |
| |
| // handle null |
| assert ByteBufferUtil.compareSubArrays( |
| null, 0, null, 0, 0) == 0; |
| assert ByteBufferUtil.compareSubArrays( |
| null, 0, ByteBufferUtil.bytes(524255231), 0, 4) == -1; |
| assert ByteBufferUtil.compareSubArrays( |
| ByteBufferUtil.bytes(524255231), 0, null, 0, 4) == 1; |
| |
| // handle comparisons |
| System.arraycopy(Ints.toByteArray(524255231), 0, bytes.array(), 3, 4); |
| assert ByteBufferUtil.compareSubArrays( |
| bytes, 3, ByteBufferUtil.bytes(524255231), 0, 4) == 0; |
| assert ByteBufferUtil.compareSubArrays( |
| bytes, 3, ByteBufferUtil.bytes(524255232), 0, 4) == -1; |
| assert ByteBufferUtil.compareSubArrays( |
| bytes, 3, ByteBufferUtil.bytes(524255230), 0, 4) == 1; |
| |
| // check that incorrect length throws exception |
| try |
| { |
| assert ByteBufferUtil.compareSubArrays( |
| bytes, 3, ByteBufferUtil.bytes(524255231), 0, 24) == 0; |
| fail("Should raise an AssertionError."); |
| } catch (AssertionError ae) |
| { |
| } |
| try |
| { |
| assert ByteBufferUtil.compareSubArrays( |
| bytes, 3, ByteBufferUtil.bytes(524255231), 0, 12) == 0; |
| fail("Should raise an AssertionError."); |
| } catch (AssertionError ae) |
| { |
| } |
| } |
| |
| @Test |
| public void testToString() |
| { |
| // null turns to empty string |
| assertEquals("", FBUtilities.toString(null)); |
| Map<String, String> map = new TreeMap<>(); |
| // empty map turns to empty string |
| assertEquals("", FBUtilities.toString(map)); |
| map.put("aaa", "bbb"); |
| assertEquals("aaa:bbb", FBUtilities.toString(map)); |
| map.put("ccc", "ddd"); |
| assertEquals("aaa:bbb, ccc:ddd", FBUtilities.toString(map)); |
| } |
| |
| @Test(expected=CharacterCodingException.class) |
| public void testDecode() throws IOException |
| { |
| ByteBuffer bytes = ByteBuffer.wrap(new byte[]{(byte)0xff, (byte)0xfe}); |
| ByteBufferUtil.string(bytes, StandardCharsets.UTF_8); |
| } |
| } |