/*
* Copyright (C) 2012-2015 DataStax 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 com.datastax.driver.core;
import com.datastax.driver.core.utils.Bytes;
import org.testng.annotations.Test;
import java.nio.ByteBuffer;
import java.util.List;
import static org.assertj.core.api.Assertions.assertThat;
public class RPTokenFactoryTest {
Token.Factory factory = Token.RPToken.FACTORY;
@Test(groups = "unit")
public void should_hash_consistently() {
ByteBuffer byteBuffer = Bytes.fromHexString("0xCAFEBABE");
Token tokenA = factory.hash(byteBuffer);
Token tokenB = factory.hash(byteBuffer);
assertThat(tokenA)
.isEqualTo(factory.fromString("59959303159920881837560881824507314222"))
.isEqualTo(tokenB);
}
@Test(groups = "unit")
public void should_split_range() {
List<Token> splits = factory.split(factory.fromString("0"), factory.fromString("127605887595351923798765477786913079296"), 3);
assertThat(splits).containsExactly(
factory.fromString("42535295865117307932921825928971026432"),
factory.fromString("85070591730234615865843651857942052864")
);
}
@Test(groups = "unit")
public void should_split_range_that_wraps_around_the_ring() {
List<Token> splits = factory.split(
factory.fromString("127605887595351923798765477786913079296"),
factory.fromString("85070591730234615865843651857942052864"),
3);
assertThat(splits).containsExactly(
factory.fromString("0"),
factory.fromString("42535295865117307932921825928971026432")
);
}
@Test(groups = "unit")
public void should_split_range_producing_empty_splits_near_ring_end() {
Token minToken = factory.fromString("-1");
Token maxToken = factory.fromString("170141183460469231731687303715884105728");
// These are edge cases where we want to make sure we don't accidentally generate the ]min,min] range (which is the whole ring)
List<Token> splits = factory.split(maxToken, minToken, 3);
assertThat(splits).containsExactly(
maxToken,
maxToken
);
splits = factory.split(minToken, factory.fromString("0"), 3);
assertThat(splits).containsExactly(
factory.fromString("0"),
factory.fromString("0")
);
}
@Test(groups = "unit")
public void should_split_whole_ring() {
List<Token> splits = factory.split(factory.fromString("-1"), factory.fromString("-1"), 3);
assertThat(splits).containsExactly(
factory.fromString("56713727820156410577229101238628035242"),
factory.fromString("113427455640312821154458202477256070485")
);
}
}