/*
* 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.hadoop.hbase.codec.prefixtree.builder;
import java.util.List;
import org.apache.hadoop.hbase.codec.prefixtree.encode.tokenize.Tokenizer;
import org.apache.hadoop.hbase.util.ByteRange;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.Assert;
import org.junit.Test;
import com.google.common.collect.Lists;
public class TestTreeDepth {
@Test
public void testSingleNode() {
List<String> inputs = Lists.newArrayList("a");
testInternal(inputs, 1);
}
@Test
public void testSimpleBranch() {
List<String> inputs = Lists.newArrayList("a", "aa", "ab");
testInternal(inputs, 2);
}
@Test
public void testEmptyRoot() {
List<String> inputs = Lists.newArrayList("a", "b");
testInternal(inputs, 2);
}
@Test
public void testRootAsNub() {
List<String> inputs = Lists.newArrayList("a", "aa");
testInternal(inputs, 2);
}
@Test
public void testRootAsNubPlusNub() {
List<String> inputs = Lists.newArrayList("a", "aa", "aaa");
testInternal(inputs, 3);
}
@Test
public void testEmptyRootPlusNub() {
List<String> inputs = Lists.newArrayList("a", "aa", "b");
testInternal(inputs, 3);
}
@Test
public void testSplitDistantAncestor() {
List<String> inputs = Lists.newArrayList("a", "ac", "acd", "b");
testInternal(inputs, 4);
}
protected void testInternal(List<String> inputs, int expectedTreeDepth) {
Tokenizer builder = new Tokenizer();
for (String s : inputs) {
ByteRange b = new ByteRange(Bytes.toBytes(s));
builder.addSorted(b);
}
Assert.assertEquals(1, builder.getRoot().getNodeDepth());
Assert.assertEquals(expectedTreeDepth, builder.getTreeDepth());
}
}