/*
* Java Genetic Algorithm Library (@__identifier__@).
* Copyright (c) @__year__@ Franz Wilhelmstötter
*
* 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.
*
* Author:
* Franz Wilhelmstötter (franz.wilhelmstoetter@gmx.at)
*/
package org.jenetics.util;
import static org.jenetics.util.Seq.toSeq;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import org.testng.Assert;
import org.testng.annotations.Test;
/**
* @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
*/
public class SeqTest {
@Test
public void collector() {
final int size = 10_000;
final Random random = RandomRegistry.getRandom();
final List<Double> list = new ArrayList<>(size);
for (int i = 0; i < size; ++i) {
list.add(random.nextDouble());
}
final Seq<Double> seq = list.stream().collect(toSeq());
Assert.assertEquals(list, seq.asList());
}
@Test
public void empty() {
Assert.assertNotNull(Seq.EMPTY);
Assert.assertNotNull(Seq.empty());
Assert.assertSame(Seq.EMPTY, Seq.empty());
Assert.assertEquals(Seq.EMPTY.length(), 0);
Assert.assertEquals(Seq.empty().asList().size(), 0);
}
@Test
public void zeroLengthSameAsEmpty() {
Assert.assertSame(Seq.of(), Seq.empty());
}
@Test
public void isEmpty() {
Assert.assertTrue(Seq.empty().isEmpty());
Assert.assertEquals(Seq.empty().length(), 0);
}
@Test
public void subSeqEmptySeq() {
Assert.assertSame(Seq.of(1, 2, 3).subSeq(3), Seq.empty());
Assert.assertSame(Seq.of(1, 2, 3).subSeq(3, 3), Seq.empty());
Assert.assertSame(Seq.of(1, 2, 3).subSeq(2, 2), Seq.empty());
Assert.assertSame(Seq.of(1, 2, 3).subSeq(1, 1), Seq.empty());
Assert.assertSame(Seq.of(1, 2, 3).subSeq(0, 0), Seq.empty());
}
@Test
public void emptySeqAppend() {
final Seq<Integer> empty = Seq.empty();
final Seq<Integer> seq = Seq.of(1, 2, 3, 4);
final Seq<Integer> aseq = empty.append(seq);
Assert.assertEquals(aseq, seq);
Assert.assertSame(aseq, seq);
}
@Test
public void emptySeqPrepend() {
final Seq<Integer> empty = Seq.empty();
final Seq<Integer> seq = Seq.of(1, 2, 3, 4);
final Seq<Integer> aseq = empty.prepend(seq);
Assert.assertEquals(aseq, seq);
Assert.assertSame(aseq, seq);
}
@Test(expectedExceptions = ArrayIndexOutOfBoundsException.class)
public void subSeqOutOtBounds1() {
Seq.of(1, 2, 3).subSeq(5);
}
@Test(expectedExceptions = ArrayIndexOutOfBoundsException.class)
public void subSeqOutOtBounds2() {
Seq.of(1, 2, 3).subSeq(-5);
}
@Test(expectedExceptions = ArrayIndexOutOfBoundsException.class)
public void subSeqOutOtBounds4() {
Seq.of(1, 2, 3).subSeq(0, 10);
}
@Test(expectedExceptions = ArrayIndexOutOfBoundsException.class)
public void subSeqOutOtBounds5() {
Seq.of(1, 2, 3).subSeq(-5, 2);
}
@Test
public void mapEmptyMSeq() {
final Seq<Integer> integers = Seq.empty();
final Seq<String> strings = integers.map(Object::toString);
Assert.assertSame(integers, strings);
Assert.assertSame(strings, Seq.empty());
}
}