guava

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/*
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 * Copyright (C) 2008 The Guava Authors
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 * http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package com.google.common.collect.testing.testers;
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import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES;
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import static com.google.common.collect.testing.features.CollectionFeature.REJECTS_DUPLICATES_AT_CREATION;
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import static com.google.common.collect.testing.features.CollectionSize.ONE;
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import static com.google.common.collect.testing.features.CollectionSize.ZERO;
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import com.google.common.annotations.GwtCompatible;
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import com.google.common.collect.testing.features.CollectionFeature;
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import com.google.common.collect.testing.features.CollectionSize;
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import java.util.Arrays;
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import java.util.List;
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import org.junit.Ignore;
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/**
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 * A generic JUnit test which tests creation (typically through a constructor or static factory
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 * method) of a set. Can't be invoked directly; please see {@link
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 * com.google.common.collect.testing.SetTestSuiteBuilder}.
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 *
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 * @author Chris Povirk
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 */
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@GwtCompatible
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@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
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public class SetCreationTester<E> extends AbstractSetTester<E> {
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  @CollectionFeature.Require(value = ALLOWS_NULL_VALUES, absent = REJECTS_DUPLICATES_AT_CREATION)
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  @CollectionSize.Require(absent = {ZERO, ONE})
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  public void testCreateWithDuplicates_nullDuplicatesNotRejected() {
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    E[] array = createArrayWithNullElement();
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    array[0] = null;
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    collection = getSubjectGenerator().create(array);
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    List<E> expectedWithDuplicateRemoved = Arrays.asList(array).subList(1, getNumElements());
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    expectContents(expectedWithDuplicateRemoved);
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  }
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  @CollectionFeature.Require(absent = REJECTS_DUPLICATES_AT_CREATION)
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  @CollectionSize.Require(absent = {ZERO, ONE})
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  public void testCreateWithDuplicates_nonNullDuplicatesNotRejected() {
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    E[] array = createSamplesArray();
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    array[1] = e0();
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    collection = getSubjectGenerator().create(array);
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    List<E> expectedWithDuplicateRemoved = Arrays.asList(array).subList(1, getNumElements());
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    expectContents(expectedWithDuplicateRemoved);
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  }
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  @CollectionFeature.Require({ALLOWS_NULL_VALUES, REJECTS_DUPLICATES_AT_CREATION})
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  @CollectionSize.Require(absent = {ZERO, ONE})
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  public void testCreateWithDuplicates_nullDuplicatesRejected() {
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    E[] array = createArrayWithNullElement();
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    array[0] = null;
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    try {
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      collection = getSubjectGenerator().create(array);
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      fail("Should reject duplicate null elements at creation");
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    } catch (IllegalArgumentException expected) {
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    }
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  }
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  @CollectionFeature.Require(REJECTS_DUPLICATES_AT_CREATION)
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  @CollectionSize.Require(absent = {ZERO, ONE})
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  public void testCreateWithDuplicates_nonNullDuplicatesRejected() {
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    E[] array = createSamplesArray();
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    array[1] = e0();
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    try {
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      collection = getSubjectGenerator().create(array);
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      fail("Should reject duplicate non-null elements at creation");
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    } catch (IllegalArgumentException expected) {
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    }
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  }
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}
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