| /* |
| * Copyright (C) 2016 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.testers; |
| |
| import static com.google.common.collect.testing.features.CollectionFeature.KNOWN_ORDER; |
| import static com.google.common.collect.testing.features.CollectionSize.ZERO; |
| import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_PUT; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.common.collect.testing.AbstractMapTester; |
| import com.google.common.collect.testing.Helpers; |
| import com.google.common.collect.testing.SampleElements; |
| import com.google.common.collect.testing.features.CollectionFeature; |
| import com.google.common.collect.testing.features.CollectionSize; |
| import com.google.common.collect.testing.features.MapFeature; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map.Entry; |
| import org.junit.Ignore; |
| |
| /** |
| * A generic JUnit test which tests {@code replaceAll()} operations on a map. Can't be invoked |
| * directly; please see {@link com.google.common.collect.testing.MapTestSuiteBuilder}. |
| * |
| * @author Louis Wasserman |
| */ |
| @GwtCompatible |
| @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. |
| public class MapReplaceAllTester<K, V> extends AbstractMapTester<K, V> { |
| private SampleElements<K> keys() { |
| return new SampleElements<>(k0(), k1(), k2(), k3(), k4()); |
| } |
| |
| private SampleElements<V> values() { |
| return new SampleElements<>(v0(), v1(), v2(), v3(), v4()); |
| } |
| |
| @MapFeature.Require(SUPPORTS_PUT) |
| public void testReplaceAllRotate() { |
| getMap() |
| .replaceAll( |
| (K k, V v) -> { |
| int index = keys().asList().indexOf(k); |
| return values().asList().get(index + 1); |
| }); |
| List<Entry<K, V>> expectedEntries = new ArrayList<>(); |
| for (Entry<K, V> entry : getSampleEntries()) { |
| int index = keys().asList().indexOf(entry.getKey()); |
| expectedEntries.add(Helpers.mapEntry(entry.getKey(), values().asList().get(index + 1))); |
| } |
| expectContents(expectedEntries); |
| } |
| |
| @MapFeature.Require(SUPPORTS_PUT) |
| @CollectionFeature.Require(KNOWN_ORDER) |
| public void testReplaceAllPreservesOrder() { |
| getMap() |
| .replaceAll( |
| (K k, V v) -> { |
| int index = keys().asList().indexOf(k); |
| return values().asList().get(index + 1); |
| }); |
| List<Entry<K, V>> orderedEntries = getOrderedElements(); |
| int index = 0; |
| for (K key : getMap().keySet()) { |
| assertEquals(orderedEntries.get(index).getKey(), key); |
| index++; |
| } |
| } |
| |
| @MapFeature.Require(absent = SUPPORTS_PUT) |
| @CollectionSize.Require(absent = ZERO) |
| public void testReplaceAll_unsupported() { |
| try { |
| getMap() |
| .replaceAll( |
| (K k, V v) -> { |
| int index = keys().asList().indexOf(k); |
| return values().asList().get(index + 1); |
| }); |
| fail( |
| "replaceAll() should throw UnsupportedOperation if a map does " |
| + "not support it and is not empty."); |
| } catch (UnsupportedOperationException expected) { |
| } |
| expectUnchanged(); |
| } |
| |
| @MapFeature.Require(absent = SUPPORTS_PUT) |
| @CollectionSize.Require(ZERO) |
| public void testReplaceAll_unsupportedByEmptyCollection() { |
| try { |
| getMap() |
| .replaceAll( |
| (K k, V v) -> { |
| int index = keys().asList().indexOf(k); |
| return values().asList().get(index + 1); |
| }); |
| } catch (UnsupportedOperationException tolerated) { |
| } |
| expectUnchanged(); |
| } |
| |
| @MapFeature.Require(absent = SUPPORTS_PUT) |
| public void testReplaceAll_unsupportedNoOpFunction() { |
| try { |
| getMap().replaceAll((K k, V v) -> v); |
| } catch (UnsupportedOperationException tolerated) { |
| } |
| expectUnchanged(); |
| } |
| } |