/*
* 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.MSeq.toMSeq;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import org.testng.Assert;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import org.jenetics.internal.util.Named;
/**
* @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
*/
public class MSeqTest {
@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 MSeq<Double> seq = list.stream().collect(toMSeq());
Assert.assertEquals(list, seq.asList());
}
@Test(dataProvider = "subSequences")
public void immutable(final Named<MSeq<Integer>> parameter) {
final MSeq<Integer> seq = parameter.value;
final Integer second = seq.get(1);
final ISeq<Integer> iseq = seq.toISeq();
Assert.assertEquals(iseq.get(1), second);
final Integer newSecond = -22;
seq.set(1, newSecond);
Assert.assertEquals(seq.get(1), newSecond);
Assert.assertEquals(iseq.get(1), second);
}
@Test(dataProvider = "subSequences")
public void subSeqImmutable(final Named<MSeq<Integer>> parameter) {
final MSeq<Integer> seq = parameter.value;
final Integer second = seq.get(1);
final MSeq<Integer> slice = seq.subSeq(1);
Assert.assertEquals(slice.get(0), second);
final ISeq<Integer> islice = slice.toISeq();
Assert.assertEquals(islice.get(0), second);
final Integer newSecond = -22;
seq.set(1, newSecond);
Assert.assertEquals(slice.get(0), newSecond);
Assert.assertEquals(islice.get(0), second);
}
@Test(dataProvider = "subSequences")
public void subSubSeqImmutable(final Named<MSeq<Integer>> parameter) {
final MSeq<Integer> seq = parameter.value;
final Integer second = seq.get(1);
final Integer third = seq.get(2);
final Integer fourth = seq.get(3);
final MSeq<Integer> slice = seq.subSeq(1);
Assert.assertEquals(slice.get(0), second);
final MSeq<Integer> sliceSlice = slice.subSeq(1);
Assert.assertEquals(sliceSlice.get(0), third);
final ISeq<Integer> islice = slice.toISeq();
Assert.assertEquals(islice.get(0), second);
final ISeq<Integer> isliceSlice = sliceSlice.toISeq();
final ISeq<Integer> isliceSlice2 = islice.subSeq(1);
Assert.assertEquals(isliceSlice.get(0), third);
Assert.assertEquals(isliceSlice2.get(0), third);
final Integer newSecond = -22;
seq.set(1, newSecond);
Assert.assertEquals(slice.get(0), newSecond);
Assert.assertEquals(islice.get(0), second);
final Integer newThird = -333;
seq.set(2, newThird);
Assert.assertEquals(sliceSlice.get(0), newThird);
Assert.assertEquals(isliceSlice.get(0), third);
Assert.assertEquals(isliceSlice2.get(0), third);
final Integer newFourth = -4444;
seq.set(3, newFourth);
Assert.assertEquals(sliceSlice.get(1), newFourth);
Assert.assertEquals(isliceSlice2.subSeq(1).get(0), fourth);
}
@Test(dataProvider = "subSequences")
public void subSubSeqImmutable2(final Named<MSeq<Integer>> parameter) {
final MSeq<Integer> seq = parameter.value;
final Integer[] values = seq.toArray(new Integer[seq.length()]);
final Integer[] newValues = seq
.map(i -> -i)
.toArray(new Integer[seq.length()]);
final Integer[] newValues2 = seq
.map(i -> -i - 1000)
.toArray(new Integer[seq.length()]);
ISeq<Integer> iseq = seq.toISeq();
MSeq<Integer> mseq = seq;
for (int i = 0; i < seq.length(); ++i) {
Assert.assertEquals(seq.get(i), values[i]);
Assert.assertEquals(mseq.get(0), values[i]);
Assert.assertEquals(iseq.get(0), values[i]);
seq.set(i, newValues[i]);
Assert.assertEquals(seq.get(i), newValues[i]);
Assert.assertEquals(mseq.get(0), newValues[i]);
Assert.assertEquals(iseq.get(0), values[i]);
mseq.set(0, newValues2[i]);
Assert.assertEquals(seq.get(i), newValues2[i]);
Assert.assertEquals(mseq.get(0), newValues2[i]);
Assert.assertEquals(iseq.get(0), values[i]);
iseq = iseq.subSeq(1);
mseq = mseq.subSeq(1);
}
}
@DataProvider(name = "subSequences")
public Object[][] subSequences() {
final MSeq<Integer> mseq = MSeq.ofLength(20);
for (int i = 0; i < mseq.length(); ++i) {
mseq.set(i, i + 1);
}
final List<MSeq<Integer>> sequences = new ArrayList<>();
MSeq<Integer> next = mseq;
for (int i = 3; i < mseq.length(); ++i) {
sequences.add(next);
next = next.subSeq(1);
}
return sequences.stream()
.map(s -> new Object[]{Named.of(s.toString(","), s)})
.toArray(Object[][]::new);
}
@Test
public void empty() {
Assert.assertNotNull(MSeq.EMPTY);
Assert.assertNotNull(MSeq.empty());
Assert.assertSame(MSeq.EMPTY, MSeq.empty());
Assert.assertEquals(MSeq.EMPTY.length(), 0);
Assert.assertEquals(MSeq.empty().asList().size(), 0);
}
@Test
public void zeroLengthSameAsEmpty() {
Assert.assertSame(MSeq.of(), MSeq.empty());
}
@Test
public void isEmpty() {
Assert.assertTrue(MSeq.empty().isEmpty());
Assert.assertEquals(MSeq.empty().length(), 0);
}
@Test
public void subSeqEmptyMSeq() {
Assert.assertSame(MSeq.of(1, 2, 3).subSeq(3), MSeq.empty());
Assert.assertSame(MSeq.of(1, 2, 3).subSeq(3, 3), MSeq.empty());
Assert.assertSame(MSeq.of(1, 2, 3).subSeq(2, 2), MSeq.empty());
Assert.assertSame(MSeq.of(1, 2, 3).subSeq(1, 1), MSeq.empty());
Assert.assertSame(MSeq.of(1, 2, 3).subSeq(0, 0), MSeq.empty());
}
@Test
public void emptySeqAppend() {
final MSeq<Integer> empty = MSeq.empty();
final MSeq<Integer> seq = MSeq.of(1, 2, 3, 4);
final MSeq<Integer> aseq = empty.append(seq);
Assert.assertEquals(aseq, seq);
}
@Test
public void emptySeqPrepend() {
final MSeq<Integer> empty = MSeq.empty();
final MSeq<Integer> seq = MSeq.of(1, 2, 3, 4);
final MSeq<Integer> aseq = empty.prepend(seq);
Assert.assertEquals(aseq, seq);
}
@Test(expectedExceptions = ArrayIndexOutOfBoundsException.class)
public void subSeqOutOtBounds1() {
MSeq.of(1, 2, 3).subSeq(5);
}
@Test(expectedExceptions = ArrayIndexOutOfBoundsException.class)
public void subSeqOutOtBounds2() {
MSeq.of(1, 2, 3).subSeq(-5);
}
@Test(expectedExceptions = ArrayIndexOutOfBoundsException.class)
public void subSeqOutOtBounds4() {
MSeq.of(1, 2, 3).subSeq(0, 10);
}
@Test(expectedExceptions = ArrayIndexOutOfBoundsException.class)
public void subSeqOutOtBounds5() {
MSeq.of(1, 2, 3).subSeq(-5, 2);
}
@Test
public void mapEmptyMSeq() {
final MSeq<Integer> integers = MSeq.empty();
final MSeq<String> strings = integers.map(Object::toString);
Assert.assertSame(integers, strings);
Assert.assertSame(strings, MSeq.empty());
}
@Test
public void copyEmptyMSeq() {
Assert.assertSame(MSeq.empty().copy(), MSeq.empty());
}
@Test
public void toISeqEmptyMSeq() {
Assert.assertSame(MSeq.empty().toISeq(), ISeq.empty());
}
}