| /* |
| * Copyright (C) 2007 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.CollectionSize.ONE; |
| import static com.google.common.collect.testing.features.CollectionSize.ZERO; |
| import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS; |
| import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES; |
| import static com.google.common.collect.testing.features.MapFeature.REJECTS_DUPLICATES_AT_CREATION; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.common.annotations.GwtIncompatible; |
| import com.google.common.collect.testing.AbstractMapTester; |
| import com.google.common.collect.testing.Helpers; |
| import com.google.common.collect.testing.features.CollectionSize; |
| import com.google.common.collect.testing.features.MapFeature; |
| import java.lang.reflect.Method; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Map.Entry; |
| import org.junit.Ignore; |
| |
| /** |
| * A generic JUnit test which tests creation (typically through a constructor or static factory |
| * method) of a map. Can't be invoked directly; please see {@link |
| * com.google.common.collect.testing.MapTestSuiteBuilder}. |
| * |
| * @author Chris Povirk |
| * @author Kevin Bourrillion |
| */ |
| @GwtCompatible(emulated = true) |
| @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. |
| public class MapCreationTester<K, V> extends AbstractMapTester<K, V> { |
| @MapFeature.Require(ALLOWS_NULL_KEYS) |
| @CollectionSize.Require(absent = ZERO) |
| public void testCreateWithNullKeySupported() { |
| initMapWithNullKey(); |
| expectContents(createArrayWithNullKey()); |
| } |
| |
| @MapFeature.Require(absent = ALLOWS_NULL_KEYS) |
| @CollectionSize.Require(absent = ZERO) |
| public void testCreateWithNullKeyUnsupported() { |
| try { |
| initMapWithNullKey(); |
| fail("Creating a map containing a null key should fail"); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| @MapFeature.Require(ALLOWS_NULL_VALUES) |
| @CollectionSize.Require(absent = ZERO) |
| public void testCreateWithNullValueSupported() { |
| initMapWithNullValue(); |
| expectContents(createArrayWithNullValue()); |
| } |
| |
| @MapFeature.Require(absent = ALLOWS_NULL_VALUES) |
| @CollectionSize.Require(absent = ZERO) |
| public void testCreateWithNullValueUnsupported() { |
| try { |
| initMapWithNullValue(); |
| fail("Creating a map containing a null value should fail"); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| @MapFeature.Require({ALLOWS_NULL_KEYS, ALLOWS_NULL_VALUES}) |
| @CollectionSize.Require(absent = ZERO) |
| public void testCreateWithNullKeyAndValueSupported() { |
| Entry<K, V>[] entries = createSamplesArray(); |
| entries[getNullLocation()] = entry(null, null); |
| resetMap(entries); |
| expectContents(entries); |
| } |
| |
| @MapFeature.Require(value = ALLOWS_NULL_KEYS, absent = REJECTS_DUPLICATES_AT_CREATION) |
| @CollectionSize.Require(absent = {ZERO, ONE}) |
| public void testCreateWithDuplicates_nullDuplicatesNotRejected() { |
| expectFirstRemoved(getEntriesMultipleNullKeys()); |
| } |
| |
| @MapFeature.Require(absent = REJECTS_DUPLICATES_AT_CREATION) |
| @CollectionSize.Require(absent = {ZERO, ONE}) |
| public void testCreateWithDuplicates_nonNullDuplicatesNotRejected() { |
| expectFirstRemoved(getEntriesMultipleNonNullKeys()); |
| } |
| |
| @MapFeature.Require({ALLOWS_NULL_KEYS, REJECTS_DUPLICATES_AT_CREATION}) |
| @CollectionSize.Require(absent = {ZERO, ONE}) |
| public void testCreateWithDuplicates_nullDuplicatesRejected() { |
| Entry<K, V>[] entries = getEntriesMultipleNullKeys(); |
| try { |
| resetMap(entries); |
| fail("Should reject duplicate null elements at creation"); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| @MapFeature.Require(REJECTS_DUPLICATES_AT_CREATION) |
| @CollectionSize.Require(absent = {ZERO, ONE}) |
| public void testCreateWithDuplicates_nonNullDuplicatesRejected() { |
| Entry<K, V>[] entries = getEntriesMultipleNonNullKeys(); |
| try { |
| resetMap(entries); |
| fail("Should reject duplicate non-null elements at creation"); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| private Entry<K, V>[] getEntriesMultipleNullKeys() { |
| Entry<K, V>[] entries = createArrayWithNullKey(); |
| entries[0] = entry(null, entries[0].getValue()); |
| return entries; |
| } |
| |
| private Entry<K, V>[] getEntriesMultipleNonNullKeys() { |
| Entry<K, V>[] entries = createSamplesArray(); |
| entries[0] = entry(k1(), v0()); |
| return entries; |
| } |
| |
| private void expectFirstRemoved(Entry<K, V>[] entries) { |
| resetMap(entries); |
| |
| List<Entry<K, V>> expectedWithDuplicateRemoved = |
| Arrays.asList(entries).subList(1, getNumElements()); |
| expectContents(expectedWithDuplicateRemoved); |
| } |
| |
| /** |
| * Returns the {@link Method} instance for {@link #testCreateWithNullKeyUnsupported()} so that |
| * tests can suppress it with {@code FeatureSpecificTestSuiteBuilder.suppressing()} until <a |
| * href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5045147">Sun bug 5045147</a> is fixed. |
| */ |
| @GwtIncompatible // reflection |
| public static Method getCreateWithNullKeyUnsupportedMethod() { |
| return Helpers.getMethod(MapCreationTester.class, "testCreateWithNullKeyUnsupported"); |
| } |
| } |