/*
* 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 org.testng.annotations.Test;
import java.util.List;
import static org.assertj.core.api.Assertions.assertThat;
public class M3PTokenFactoryTest {
Token.Factory factory = Token.M3PToken.FACTORY;
@Test(groups = "unit")
public void should_split_range() {
List<Token> splits = factory.split(factory.fromString("-9223372036854775808"), factory.fromString("4611686018427387904"), 3);
assertThat(splits).containsExactly(
factory.fromString("-4611686018427387904"),
factory.fromString("0")
);
}
@Test(groups = "unit")
public void should_split_range_that_wraps_around_the_ring() {
List<Token> splits = factory.split(factory.fromString("4611686018427387904"), factory.fromString("0"), 3);
assertThat(splits).containsExactly(
factory.fromString("-9223372036854775807"),
factory.fromString("-4611686018427387903")
);
}
@Test(groups = "unit")
public void should_split_range_when_division_not_integral() {
List<Token> splits = factory.split(factory.fromString("0"), factory.fromString("11"), 3);
assertThat(splits).containsExactly(
factory.fromString("4"),
factory.fromString("8")
);
}
@Test(groups = "unit")
public void should_split_range_producing_empty_splits() {
List<Token> splits = factory.split(factory.fromString("0"), factory.fromString("2"), 5);
assertThat(splits).containsExactly(
factory.fromString("1"),
factory.fromString("2"),
factory.fromString("2"),
factory.fromString("2")
);
}
@Test(groups = "unit")
public void should_split_range_producing_empty_splits_near_ring_end() {
Token minToken = factory.fromString("-9223372036854775808");
Token maxToken = factory.fromString("9223372036854775807");
// 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("-9223372036854775807"), 3);
assertThat(splits).containsExactly(
factory.fromString("-9223372036854775807"),
factory.fromString("-9223372036854775807")
);
}
@Test(groups = "unit")
public void should_split_whole_ring() {
List<Token> splits = factory.split(factory.fromString("-9223372036854775808"), factory.fromString("-9223372036854775808"), 3);
assertThat(splits).containsExactly(
factory.fromString("-3074457345618258603"),
factory.fromString("3074457345618258602")
);
}
}