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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 junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import java.util.List;
/**
* Test suite covering {@link Bytes#asList(byte[])}.
*
* @author Kevin Bourrillion
*/
@GwtCompatible(emulated = true)
public class ByteArrayAsListTest extends TestCase {
private static List<Byte> asList(Byte[] values) {
byte[] temp = new byte[values.length];
for (int i = 0; i < values.length; i++) {
temp[i] = checkNotNull(values[i]); // checkNotNull for GWT (do not optimize).
}
return Bytes.asList(temp);
}
@GwtIncompatible("suite")
public static Test suite() {
List<ListTestSuiteBuilder<Byte>> builders =
ImmutableList.of(
ListTestSuiteBuilder.using(new BytesAsListGenerator())
.named("Bytes.asList"),
ListTestSuiteBuilder.using(new BytesAsListHeadSubListGenerator())
.named("Bytes.asList, head subList"),
ListTestSuiteBuilder.using(new BytesAsListTailSubListGenerator())
.named("Bytes.asList, tail subList"),
ListTestSuiteBuilder.using(new BytesAsListMiddleSubListGenerator())
.named("Bytes.asList, middle subList")
);
TestSuite suite = new TestSuite();
for (ListTestSuiteBuilder<Byte> 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 BytesAsListGenerator extends TestByteListGenerator {
@Override protected List<Byte> create(Byte[] elements) {
return asList(elements);
}
}
public static final class BytesAsListHeadSubListGenerator extends TestByteListGenerator {
@Override protected List<Byte> create(Byte[] elements) {
Byte[] suffix = {Byte.MIN_VALUE, Byte.MAX_VALUE};
Byte[] all = concat(elements, suffix);
return asList(all).subList(0, elements.length);
}
}
public static final class BytesAsListTailSubListGenerator extends TestByteListGenerator {
@Override protected List<Byte> create(Byte[] elements) {
Byte[] prefix = {(byte) 86, (byte) 99};
Byte[] all = concat(prefix, elements);
return asList(all).subList(2, elements.length + 2);
}
}
public static final class BytesAsListMiddleSubListGenerator extends TestByteListGenerator {
@Override protected List<Byte> create(Byte[] elements) {
Byte[] prefix = {Byte.MIN_VALUE, Byte.MAX_VALUE};
Byte[] suffix = {(byte) 86, (byte) 99};
Byte[] all = concat(concat(prefix, elements), suffix);
return asList(all).subList(2, elements.length + 2);
}
}
private static Byte[] concat(Byte[] left, Byte[] right) {
Byte[] result = new Byte[left.length + right.length];
System.arraycopy(left, 0, result, 0, left.length);
System.arraycopy(right, 0, result, left.length, right.length);
return result;
}
public static abstract class TestByteListGenerator
implements TestListGenerator<Byte> {
@Override
public SampleElements<Byte> samples() {
return new SampleBytes();
}
@Override
public List<Byte> create(Object... elements) {
Byte[] array = new Byte[elements.length];
int i = 0;
for (Object e : elements) {
array[i++] = (Byte) e;
}
return create(array);
}
/**
* Creates a new collection containing the given elements; implement this
* method instead of {@link #create(Object...)}.
*/
protected abstract List<Byte> create(Byte[] elements);
@Override
public Byte[] createArray(int length) {
return new Byte[length];
}
/** Returns the original element list, unchanged. */
@Override
public List<Byte> order(List<Byte> insertionOrder) {
return insertionOrder;
}
}
public static class SampleBytes extends SampleElements<Byte> {
public SampleBytes() {
super((byte) 0, (byte) 1, (byte) 2, (byte) 3, (byte) 4);
}
}
}
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