/**
* Copyright 2011-2017 Asakusa Framework Team.
*
* 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.asakusafw.runtime.flow.join;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.junit.Test;
import com.asakusafw.runtime.value.IntOption;
/**
* Test for {@link VolatileLookUpTable}.
*/
public class VolatileLookUpTableTest {
/**
* empty table.
* @throws Exception if failed
*/
@Test
public void empty() throws Exception {
VolatileLookUpTable.Builder<IntOption> builder = new VolatileLookUpTable.Builder<>();
LookUpTable<IntOption> table = builder.build();
assertThat(sort(table.get(key(100))), is(values()));
}
/**
* simple case.
* @throws Exception if failed
*/
@Test
public void simple() throws Exception {
VolatileLookUpTable.Builder<IntOption> builder = new VolatileLookUpTable.Builder<>();
builder.add(key(100), new IntOption(100));
LookUpTable<IntOption> table = builder.build();
assertThat(sort(table.get(key(100))), is(values(100)));
assertThat(sort(table.get(key(101))), is(values()));
}
/**
* conflict keys.
* @throws Exception if failed
*/
@Test
public void duplicate() throws Exception {
VolatileLookUpTable.Builder<IntOption> builder = new VolatileLookUpTable.Builder<>();
builder.add(key(100), new IntOption(100));
builder.add(key(100), new IntOption(101));
builder.add(key(100), new IntOption(102));
LookUpTable<IntOption> table = builder.build();
assertThat(sort(table.get(key(100))), is(values(100, 101, 102)));
assertThat(sort(table.get(key(101))), is(values()));
}
/**
* reuses the same key object.
* @throws Exception if failed
*/
@Test
public void reuseKeys() throws Exception {
VolatileLookUpTable.Builder<IntOption> builder = new VolatileLookUpTable.Builder<>();
LookUpKey key = key();
key.add(new IntOption(100));
builder.add(key, new IntOption(100));
key.reset();
key.add(new IntOption(101));
builder.add(key, new IntOption(101));
key.reset();
key.add(new IntOption(102));
builder.add(key, new IntOption(102));
key.reset();
LookUpTable<IntOption> table = builder.build();
assertThat(sort(table.get(key(100))), is(values(100)));
assertThat(sort(table.get(key(101))), is(values(101)));
assertThat(sort(table.get(key(102))), is(values(102)));
}
private LookUpKey key(int... values) throws IOException {
LookUpKey result = new LookUpKey();
for (int value : values) {
result.add(new IntOption(value));
}
return result;
}
private List<IntOption> sort(List<IntOption> list) {
Collections.sort(list);
return list;
}
private List<IntOption> values(int...values) {
List<IntOption> options = new ArrayList<>();
for (int value : values) {
options.add(new IntOption(value));
}
return sort(options);
}
}