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/*
* Copyright (C) 2008 The Guava Authors
*
* 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.google.common.primitives;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.testing.ListTestSuiteBuilder;
import com.google.common.collect.testing.SampleElements;
import com.google.common.collect.testing.TestListGenerator;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.ListFeature;
import java.util.List;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
* Test suite covering {@link Ints#asList(int[])}.
*
* @author Kevin Bourrillion
*/
@GwtCompatible(emulated = true)
@SuppressWarnings("cast") // redundant casts are intentional and harmless
public class IntArrayAsListTest extends TestCase {
private static List<Integer> asList(Integer[] values) {
int[] temp = new int[values.length];
for (int i = 0; i < values.length; i++) {
temp[i] = checkNotNull(values[i]); // checkNotNull for GWT (do not optimize).
}
return Ints.asList(temp);
}
@GwtIncompatible // suite
public static Test suite() {
List<ListTestSuiteBuilder<Integer>> builders =
ImmutableList.of(
ListTestSuiteBuilder.using(new IntsAsListGenerator()).named("Ints.asList"),
ListTestSuiteBuilder.using(new IntsAsListHeadSubListGenerator())
.named("Ints.asList, head subList"),
ListTestSuiteBuilder.using(new IntsAsListTailSubListGenerator())
.named("Ints.asList, tail subList"),
ListTestSuiteBuilder.using(new IntsAsListMiddleSubListGenerator())
.named("Ints.asList, middle subList"));
TestSuite suite = new TestSuite();
for (ListTestSuiteBuilder<Integer> builder : builders) {
suite.addTest(
builder
.withFeatures(
CollectionSize.ONE,
CollectionSize.SEVERAL,
CollectionFeature.RESTRICTS_ELEMENTS,
ListFeature.SUPPORTS_SET)
.createTestSuite());
}
return suite;
}
// Test generators. To let the GWT test suite generator access them, they need to be
// public named classes with a public default constructor.
public static final class IntsAsListGenerator extends TestIntegerListGenerator {
@Override
protected List<Integer> create(Integer[] elements) {
return asList(elements);
}
}
public static final class IntsAsListHeadSubListGenerator extends TestIntegerListGenerator {
@Override
protected List<Integer> create(Integer[] elements) {
Integer[] suffix = {Integer.MIN_VALUE, Integer.MAX_VALUE};
Integer[] all = concat(elements, suffix);
return asList(all).subList(0, elements.length);
}
}
public static final class IntsAsListTailSubListGenerator extends TestIntegerListGenerator {
@Override
protected List<Integer> create(Integer[] elements) {
Integer[] prefix = {(int) 86, (int) 99};
Integer[] all = concat(prefix, elements);
return asList(all).subList(2, elements.length + 2);
}
}
public static final class IntsAsListMiddleSubListGenerator extends TestIntegerListGenerator {
@Override
protected List<Integer> create(Integer[] elements) {
Integer[] prefix = {Integer.MIN_VALUE, Integer.MAX_VALUE};
Integer[] suffix = {(int) 86, (int) 99};
Integer[] all = concat(concat(prefix, elements), suffix);
return asList(all).subList(2, elements.length + 2);
}
}
private static Integer[] concat(Integer[] left, Integer[] right) {
Integer[] result = new Integer[left.length + right.length];
System.arraycopy(left, 0, result, 0, left.length);
System.arraycopy(right, 0, result, left.length, right.length);
return result;
}
public abstract static class TestIntegerListGenerator implements TestListGenerator<Integer> {
@Override
public SampleElements<Integer> samples() {
return new SampleIntegers();
}
@Override
public List<Integer> create(Object... elements) {
Integer[] array = new Integer[elements.length];
int i = 0;
for (Object e : elements) {
array[i++] = (Integer) e;
}
return create(array);
}
/**
* Creates a new collection containing the given elements; implement this method instead of
* {@link #create(Object...)}.
*/
protected abstract List<Integer> create(Integer[] elements);
@Override
public Integer[] createArray(int length) {
return new Integer[length];
}
/** Returns the original element list, unchanged. */
@Override
public List<Integer> order(List<Integer> insertionOrder) {
return insertionOrder;
}
}
public static class SampleIntegers extends SampleElements<Integer> {
public SampleIntegers() {
super((int) 0, (int) 1, (int) 2, (int) 3, (int) 4);
}
}
}
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