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/*
* Copyright (C) 2009 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.collect.testing.google;
import static java.util.Arrays.asList;
import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableList.Builder;
import com.google.common.collect.testing.TestListGenerator;
import com.google.common.collect.testing.TestStringListGenerator;
import com.google.common.collect.testing.TestUnhashableCollectionGenerator;
import com.google.common.collect.testing.UnhashableObject;
import java.util.Collections;
import java.util.List;
/**
* Common generators of different types of lists.
*
* @author Hayward Chan
*/
@GwtCompatible
public final class ListGenerators {
private ListGenerators() {}
public static class ImmutableListOfGenerator extends TestStringListGenerator {
@Override protected List<String> create(String[] elements) {
return ImmutableList.copyOf(elements);
}
}
public static class BuilderAddListGenerator extends TestStringListGenerator {
@Override protected List<String> create(String[] elements) {
Builder<String> builder = ImmutableList.<String>builder();
for (String element : elements) {
builder.add(element);
}
return builder.build();
}
}
public static class BuilderAddAllListGenerator
extends TestStringListGenerator {
@Override protected List<String> create(String[] elements) {
return ImmutableList.<String>builder()
.addAll(asList(elements))
.build();
}
}
public static class BuilderReversedListGenerator
extends TestStringListGenerator {
@Override protected List<String> create(String[] elements) {
List<String> list = asList(elements);
Collections.reverse(list);
return ImmutableList.copyOf(list).reverse();
}
}
public static class ImmutableListHeadSubListGenerator
extends TestStringListGenerator {
@Override protected List<String> create(String[] elements) {
String[] suffix = {"f", "g"};
String[] all = new String[elements.length + suffix.length];
System.arraycopy(elements, 0, all, 0, elements.length);
System.arraycopy(suffix, 0, all, elements.length, suffix.length);
return ImmutableList.copyOf(all)
.subList(0, elements.length);
}
}
public static class ImmutableListTailSubListGenerator
extends TestStringListGenerator {
@Override protected List<String> create(String[] elements) {
String[] prefix = {"f", "g"};
String[] all = new String[elements.length + prefix.length];
System.arraycopy(prefix, 0, all, 0, 2);
System.arraycopy(elements, 0, all, 2, elements.length);
return ImmutableList.copyOf(all)
.subList(2, elements.length + 2);
}
}
public static class ImmutableListMiddleSubListGenerator
extends TestStringListGenerator {
@Override protected List<String> create(String[] elements) {
String[] prefix = {"f", "g"};
String[] suffix = {"h", "i"};
String[] all = new String[2 + elements.length + 2];
System.arraycopy(prefix, 0, all, 0, 2);
System.arraycopy(elements, 0, all, 2, elements.length);
System.arraycopy(suffix, 0, all, 2 + elements.length, 2);
return ImmutableList.copyOf(all)
.subList(2, elements.length + 2);
}
}
private abstract static class TestUnhashableListGenerator
extends TestUnhashableCollectionGenerator<List<UnhashableObject>>
implements TestListGenerator<UnhashableObject> {
}
public static class UnhashableElementsImmutableListGenerator
extends TestUnhashableListGenerator {
@Override
public List<UnhashableObject> create(UnhashableObject[] elements) {
return ImmutableList.copyOf(elements);
}
}
}
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