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Java example source code file (TestsForListsInJavaUtil.java)

This example Java source code file (TestsForListsInJavaUtil.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

abstractlist, abstractsequentiallist, arraylist, collection, copyonwritearraylist, gwtincompatible, linkedlist, list, listiterator, override, reflection, test, testsforlistsinjavautil, teststringlistgenerator, testsuite, threading, threads, util

The TestsForListsInJavaUtil.java Java example source code

/*
 * 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;

import static com.google.common.collect.testing.testers.ListListIteratorTester.getListIteratorFullyModifiableMethod;
import static com.google.common.collect.testing.testers.ListSubListTester.getSubListOriginalListSetAffectsSubListLargeListMethod;
import static com.google.common.collect.testing.testers.ListSubListTester.getSubListOriginalListSetAffectsSubListMethod;
import static com.google.common.collect.testing.testers.ListSubListTester.getSubListSubListRemoveAffectsOriginalLargeListMethod;

import com.google.common.annotations.GwtIncompatible;
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.TestSuite;

import java.lang.reflect.Method;
import java.util.AbstractList;
import java.util.AbstractSequentialList;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;
import java.util.concurrent.CopyOnWriteArrayList;

/**
 * Generates a test suite covering the {@link List} implementations in the
 * {@link java.util} package. Can be subclassed to specify tests that should
 * be suppressed.
 *
 * @author Kevin Bourrillion
 */
@GwtIncompatible
public class TestsForListsInJavaUtil {
  public static Test suite() {
    return new TestsForListsInJavaUtil().allTests();
  }

  public Test allTests() {
    TestSuite suite = new TestSuite("java.util Lists");
    suite.addTest(testsForEmptyList());
    suite.addTest(testsForSingletonList());
    suite.addTest(testsForArraysAsList());
    suite.addTest(testsForArrayList());
    suite.addTest(testsForLinkedList());
    suite.addTest(testsForCopyOnWriteArrayList());
    suite.addTest(testsForUnmodifiableList());
    suite.addTest(testsForCheckedList());
    suite.addTest(testsForAbstractList());
    suite.addTest(testsForAbstractSequentialList());
    return suite;
  }

  protected Collection<Method> suppressForEmptyList() {
    return Collections.emptySet();
  }

  protected Collection<Method> suppressForSingletonList() {
    return Collections.emptySet();
  }

  protected Collection<Method> suppressForArraysAsList() {
    return Collections.emptySet();
  }

  protected Collection<Method> suppressForArrayList() {
    return Collections.emptySet();
  }

  protected Collection<Method> suppressForLinkedList() {
    return Collections.emptySet();
  }

  protected Collection<Method> suppressForCopyOnWriteArrayList() {
    return Arrays.asList(
        getSubListOriginalListSetAffectsSubListMethod(),
        getSubListOriginalListSetAffectsSubListLargeListMethod(),
        getSubListSubListRemoveAffectsOriginalLargeListMethod(),
        getListIteratorFullyModifiableMethod());
  }

  protected Collection<Method> suppressForUnmodifiableList() {
    return Collections.emptySet();
  }

  protected Collection<Method> suppressForCheckedList() {
    return Collections.emptySet();
  }

  protected Collection<Method> suppressForAbstractList() {
    return Collections.emptySet();
  }

  protected Collection<Method> suppressForAbstractSequentialList() {
    return Collections.emptySet();
  }

  public Test testsForEmptyList() {
    return ListTestSuiteBuilder.using(
            new TestStringListGenerator() {
              @Override
              public List<String> create(String[] elements) {
                return Collections.emptyList();
              }
            })
        .named("emptyList")
        .withFeatures(CollectionFeature.SERIALIZABLE, CollectionSize.ZERO)
        .suppressing(suppressForEmptyList())
        .createTestSuite();
  }

  public Test testsForSingletonList() {
    return ListTestSuiteBuilder.using(
            new TestStringListGenerator() {
              @Override
              public List<String> create(String[] elements) {
                return Collections.singletonList(elements[0]);
              }
            })
        .named("singletonList")
        .withFeatures(
            CollectionFeature.SERIALIZABLE,
            CollectionFeature.ALLOWS_NULL_VALUES,
            CollectionSize.ONE)
        .suppressing(suppressForSingletonList())
        .createTestSuite();
  }

  public Test testsForArraysAsList() {
    return ListTestSuiteBuilder.using(
            new TestStringListGenerator() {
              @Override
              public List<String> create(String[] elements) {
                return Arrays.asList(elements.clone());
              }
            })
        .named("Arrays.asList")
        .withFeatures(
            ListFeature.SUPPORTS_SET,
            CollectionFeature.SERIALIZABLE,
            CollectionFeature.ALLOWS_NULL_VALUES,
            CollectionSize.ANY)
        .suppressing(suppressForArraysAsList())
        .createTestSuite();
  }

  public Test testsForArrayList() {
    return ListTestSuiteBuilder.using(
            new TestStringListGenerator() {
              @Override
              public List<String> create(String[] elements) {
                return new ArrayList<String>(MinimalCollection.of(elements));
              }
            })
        .named("ArrayList")
        .withFeatures(
            ListFeature.GENERAL_PURPOSE,
            CollectionFeature.SERIALIZABLE,
            CollectionFeature.ALLOWS_NULL_VALUES,
            CollectionFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION,
            CollectionSize.ANY)
        .suppressing(suppressForArrayList())
        .createTestSuite();
  }

  public Test testsForLinkedList() {
    return ListTestSuiteBuilder.using(
            new TestStringListGenerator() {
              @Override
              public List<String> create(String[] elements) {
                return new LinkedList<String>(MinimalCollection.of(elements));
              }
            })
        .named("LinkedList")
        .withFeatures(
            ListFeature.GENERAL_PURPOSE,
            CollectionFeature.SERIALIZABLE,
            CollectionFeature.ALLOWS_NULL_VALUES,
            CollectionFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION,
            CollectionSize.ANY)
        .suppressing(suppressForLinkedList())
        .createTestSuite();
  }

  public Test testsForCopyOnWriteArrayList() {
    return ListTestSuiteBuilder.using(
            new TestStringListGenerator() {
              @Override
              public List<String> create(String[] elements) {
                return new CopyOnWriteArrayList<String>(MinimalCollection.of(elements));
              }
            })
        .named("CopyOnWriteArrayList")
        .withFeatures(
            ListFeature.SUPPORTS_ADD_WITH_INDEX,
            ListFeature.SUPPORTS_REMOVE_WITH_INDEX,
            ListFeature.SUPPORTS_SET,
            CollectionFeature.SUPPORTS_ADD,
            CollectionFeature.SUPPORTS_REMOVE,
            CollectionFeature.SERIALIZABLE,
            CollectionFeature.ALLOWS_NULL_VALUES,
            CollectionSize.ANY)
        .suppressing(suppressForCopyOnWriteArrayList())
        .createTestSuite();
  }

  public Test testsForUnmodifiableList() {
    return ListTestSuiteBuilder.using(
            new TestStringListGenerator() {
              @Override
              public List<String> create(String[] elements) {
                List<String> innerList = new ArrayList();
                Collections.addAll(innerList, elements);
                return Collections.unmodifiableList(innerList);
              }
            })
        .named("unmodifiableList/ArrayList")
        .withFeatures(
            CollectionFeature.SERIALIZABLE,
            CollectionFeature.ALLOWS_NULL_VALUES,
            CollectionSize.ANY)
        .suppressing(suppressForUnmodifiableList())
        .createTestSuite();
  }

  public Test testsForCheckedList() {
    return ListTestSuiteBuilder.using(
            new TestStringListGenerator() {
              @Override
              public List<String> create(String[] elements) {
                List<String> innerList = new ArrayList();
                Collections.addAll(innerList, elements);
                return Collections.checkedList(innerList, String.class);
              }
            })
        .named("checkedList/ArrayList")
        .withFeatures(
            ListFeature.GENERAL_PURPOSE,
            CollectionFeature.SERIALIZABLE,
            CollectionFeature.RESTRICTS_ELEMENTS,
            CollectionFeature.ALLOWS_NULL_VALUES,
            CollectionSize.ANY)
        .suppressing(suppressForCheckedList())
        .createTestSuite();
  }

  public Test testsForAbstractList() {
    return ListTestSuiteBuilder.using(
            new TestStringListGenerator() {
              @Override
              protected List<String> create(final String[] elements) {
                return new AbstractList<String>() {
                  @Override
                  public int size() {
                    return elements.length;
                  }

                  @Override
                  public String get(int index) {
                    return elements[index];
                  }
                };
              }
            })
        .named("AbstractList")
        .withFeatures(
            CollectionFeature.NONE, CollectionFeature.ALLOWS_NULL_VALUES, CollectionSize.ANY)
        .suppressing(suppressForAbstractList())
        .createTestSuite();
  }

  public Test testsForAbstractSequentialList() {
    return ListTestSuiteBuilder.using(
            new TestStringListGenerator() {
              @Override
              protected List<String> create(final String[] elements) {
                // For this test we trust ArrayList works
                final List<String> list = new ArrayList();
                Collections.addAll(list, elements);
                return new AbstractSequentialList<String>() {
                  @Override
                  public int size() {
                    return list.size();
                  }

                  @Override
                  public ListIterator<String> listIterator(int index) {
                    return list.listIterator(index);
                  }
                };
              }
            })
        .named("AbstractSequentialList")
        .withFeatures(
            ListFeature.GENERAL_PURPOSE, CollectionFeature.ALLOWS_NULL_VALUES, CollectionSize.ANY)
        .suppressing(suppressForAbstractSequentialList())
        .createTestSuite();
  }
}

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