guava

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/*
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 * Copyright (C) 2007 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.KNOWN_ORDER;
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import static com.google.common.collect.testing.features.CollectionFeature.NON_STANDARD_TOSTRING;
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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.SEVERAL;
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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.AbstractCollectionTester;
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import com.google.common.collect.testing.Helpers;
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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 org.junit.Ignore;
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/**
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 * A generic JUnit test which tests {@code toString()} operations on a collection. Can't be invoked
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 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
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 *
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 * @author Kevin Bourrillion
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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 CollectionToStringTester<E> extends AbstractCollectionTester<E> {
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  public void testToString_minimal() {
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    assertNotNull("toString() should not return null", collection.toString());
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  }
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  @CollectionSize.Require(ZERO)
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  @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING)
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  public void testToString_size0() {
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    assertEquals("emptyCollection.toString should return []", "[]", collection.toString());
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  }
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  @CollectionSize.Require(ONE)
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  @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING)
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  public void testToString_size1() {
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    assertEquals(
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        "size1Collection.toString should return [{element}]",
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        "[" + e0() + "]",
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        collection.toString());
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  }
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  @CollectionSize.Require(SEVERAL)
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  @CollectionFeature.Require(value = KNOWN_ORDER, absent = NON_STANDARD_TOSTRING)
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  public void testToString_sizeSeveral() {
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    String expected = Helpers.copyToList(getOrderedElements()).toString();
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    assertEquals("collection.toString() incorrect", expected, collection.toString());
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  }
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  @CollectionSize.Require(absent = ZERO)
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  @CollectionFeature.Require(ALLOWS_NULL_VALUES)
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  public void testToString_null() {
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    initCollectionWithNullElement();
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    testToString_minimal();
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  }
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}
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