| /* |
| * 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; |
| |
| import static com.google.common.collect.Maps.transformEntries; |
| import static com.google.common.collect.Maps.transformValues; |
| import static com.google.common.collect.testing.Helpers.mapEntry; |
| import static java.util.Arrays.asList; |
| import static org.truth0.Truth.ASSERT; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.common.annotations.GwtIncompatible; |
| import com.google.common.base.Converter; |
| import com.google.common.base.Equivalence; |
| import com.google.common.base.Function; |
| import com.google.common.base.Functions; |
| import com.google.common.base.Predicate; |
| import com.google.common.base.Predicates; |
| import com.google.common.collect.Maps.EntryTransformer; |
| import com.google.common.collect.Maps.ValueDifferenceImpl; |
| import com.google.common.collect.SetsTest.Derived; |
| import com.google.common.testing.EqualsTester; |
| import com.google.common.testing.NullPointerTester; |
| import com.google.common.testing.SerializableTester; |
| |
| import junit.framework.TestCase; |
| |
| import java.io.IOException; |
| import java.io.StringBufferInputStream; |
| import java.lang.reflect.Field; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.EnumMap; |
| import java.util.Enumeration; |
| import java.util.HashMap; |
| import java.util.IdentityHashMap; |
| import java.util.Iterator; |
| import java.util.LinkedHashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.Properties; |
| import java.util.Set; |
| import java.util.SortedMap; |
| import java.util.SortedSet; |
| import java.util.TreeMap; |
| import java.util.concurrent.ConcurrentMap; |
| |
| /** |
| * Unit test for {@code Maps}. |
| * |
| * @author Kevin Bourrillion |
| * @author Mike Bostock |
| * @author Jared Levy |
| */ |
| @GwtCompatible(emulated = true) |
| public class MapsTest extends TestCase { |
| |
| private static final Comparator<Integer> SOME_COMPARATOR = |
| Collections.reverseOrder(); |
| |
| public void testHashMap() { |
| HashMap<Integer, Integer> map = Maps.newHashMap(); |
| assertEquals(Collections.emptyMap(), map); |
| } |
| |
| public void testHashMapWithInitialMap() { |
| Map<String, Integer> original = new TreeMap<String, Integer>(); |
| original.put("a", 1); |
| original.put("b", 2); |
| original.put("c", 3); |
| HashMap<String, Integer> map = Maps.newHashMap(original); |
| assertEquals(original, map); |
| } |
| |
| public void testHashMapGeneralizesTypes() { |
| Map<String, Integer> original = new TreeMap<String, Integer>(); |
| original.put("a", 1); |
| original.put("b", 2); |
| original.put("c", 3); |
| HashMap<Object, Object> map = |
| Maps.newHashMap((Map<? extends Object, ? extends Object>) original); |
| assertEquals(original, map); |
| } |
| |
| public void testCapacityForNegativeSizeFails() { |
| try { |
| Maps.capacity(-1); |
| fail("Negative expected size must result in IllegalArgumentException"); |
| } catch (IllegalArgumentException ex) { |
| } |
| } |
| |
| /** |
| * Tests that nHMWES makes hash maps large enough that adding the expected |
| * number of elements won't cause a rehash. |
| * |
| * As of jdk7u40, HashMap has an empty-map optimization. The argument to |
| * new HashMap(int) is noted, but the initial table is a zero-length array. |
| * |
| * This test may fail miserably on non-OpenJDK environments... |
| */ |
| @GwtIncompatible("reflection") |
| public void testNewHashMapWithExpectedSize_wontGrow() throws Exception { |
| // before jdk7u40: creates one-bucket table |
| // after jdk7u40: creates empty table |
| assertTrue(bucketsOf(Maps.newHashMapWithExpectedSize(0)) <= 1); |
| |
| for (int size = 1; size < 200; size++) { |
| HashMap<Integer, Void> map1 = Maps.newHashMapWithExpectedSize(size); |
| |
| // Only start measuring table size after the first element inserted, to |
| // deal with empty-map optimization. |
| map1.put(0, null); |
| |
| int initialBuckets = bucketsOf(map1); |
| |
| for (int i = 1; i < size; i++) { |
| map1.put(i, null); |
| } |
| assertEquals("table size after adding " + size + " elements", |
| initialBuckets, bucketsOf(map1)); |
| |
| /* |
| * Something slightly different happens when the entries are added all at |
| * once; make sure that passes too. |
| */ |
| HashMap<Integer, Void> map2 = Maps.newHashMapWithExpectedSize(size); |
| map2.putAll(map1); |
| assertEquals("table size after adding " + size + "elements", |
| initialBuckets, bucketsOf(map2)); |
| } |
| } |
| |
| @GwtIncompatible("reflection") |
| private static int bucketsOf(HashMap<?, ?> hashMap) throws Exception { |
| Field tableField = HashMap.class.getDeclaredField("table"); |
| tableField.setAccessible(true); |
| Object[] table = (Object[]) tableField.get(hashMap); |
| return table.length; |
| } |
| |
| public void testCapacityForLargeSizes() { |
| int[] largeExpectedSizes = new int[] { |
| Integer.MAX_VALUE / 2 - 1, |
| Integer.MAX_VALUE / 2, |
| Integer.MAX_VALUE / 2 + 1, |
| Integer.MAX_VALUE - 1, |
| Integer.MAX_VALUE}; |
| for (int expectedSize : largeExpectedSizes) { |
| int capacity = Maps.capacity(expectedSize); |
| assertTrue( |
| "capacity (" + capacity + ") must be >= expectedSize (" + expectedSize + ")", |
| capacity >= expectedSize); |
| } |
| } |
| |
| public void testLinkedHashMap() { |
| LinkedHashMap<Integer, Integer> map = Maps.newLinkedHashMap(); |
| assertEquals(Collections.emptyMap(), map); |
| } |
| |
| @SuppressWarnings("serial") |
| public void testLinkedHashMapWithInitialMap() { |
| Map<String, String> map = new LinkedHashMap<String, String>() {{ |
| put("Hello", "World"); |
| put("first", "second"); |
| put("polygene", "lubricants"); |
| put("alpha", "betical"); |
| }}; |
| |
| LinkedHashMap<String, String> copy = Maps.newLinkedHashMap(map); |
| |
| Iterator<Entry<String, String>> iter = copy.entrySet().iterator(); |
| assertTrue(iter.hasNext()); |
| Entry<String, String> entry = iter.next(); |
| assertEquals("Hello", entry.getKey()); |
| assertEquals("World", entry.getValue()); |
| assertTrue(iter.hasNext()); |
| |
| entry = iter.next(); |
| assertEquals("first", entry.getKey()); |
| assertEquals("second", entry.getValue()); |
| assertTrue(iter.hasNext()); |
| |
| entry = iter.next(); |
| assertEquals("polygene", entry.getKey()); |
| assertEquals("lubricants", entry.getValue()); |
| assertTrue(iter.hasNext()); |
| |
| entry = iter.next(); |
| assertEquals("alpha", entry.getKey()); |
| assertEquals("betical", entry.getValue()); |
| assertFalse(iter.hasNext()); |
| } |
| |
| public void testLinkedHashMapGeneralizesTypes() { |
| Map<String, Integer> original = new LinkedHashMap<String, Integer>(); |
| original.put("a", 1); |
| original.put("b", 2); |
| original.put("c", 3); |
| HashMap<Object, Object> map |
| = Maps.<Object, Object>newLinkedHashMap(original); |
| assertEquals(original, map); |
| } |
| |
| public void testIdentityHashMap() { |
| IdentityHashMap<Integer, Integer> map = Maps.newIdentityHashMap(); |
| assertEquals(Collections.emptyMap(), map); |
| } |
| |
| public void testConcurrentMap() { |
| ConcurrentMap<Integer, Integer> map = Maps.newConcurrentMap(); |
| assertEquals(Collections.emptyMap(), map); |
| } |
| |
| public void testTreeMap() { |
| TreeMap<Integer, Integer> map = Maps.newTreeMap(); |
| assertEquals(Collections.emptyMap(), map); |
| assertNull(map.comparator()); |
| } |
| |
| public void testTreeMapDerived() { |
| TreeMap<Derived, Integer> map = Maps.newTreeMap(); |
| assertEquals(Collections.emptyMap(), map); |
| map.put(new Derived("foo"), 1); |
| map.put(new Derived("bar"), 2); |
| ASSERT.that(map.keySet()).has().exactly( |
| new Derived("bar"), new Derived("foo")).inOrder(); |
| ASSERT.that(map.values()).has().exactly(2, 1).inOrder(); |
| assertNull(map.comparator()); |
| } |
| |
| public void testTreeMapNonGeneric() { |
| TreeMap<LegacyComparable, Integer> map = Maps.newTreeMap(); |
| assertEquals(Collections.emptyMap(), map); |
| map.put(new LegacyComparable("foo"), 1); |
| map.put(new LegacyComparable("bar"), 2); |
| ASSERT.that(map.keySet()).has().exactly( |
| new LegacyComparable("bar"), new LegacyComparable("foo")).inOrder(); |
| ASSERT.that(map.values()).has().exactly(2, 1).inOrder(); |
| assertNull(map.comparator()); |
| } |
| |
| public void testTreeMapWithComparator() { |
| TreeMap<Integer, Integer> map = Maps.newTreeMap(SOME_COMPARATOR); |
| assertEquals(Collections.emptyMap(), map); |
| assertSame(SOME_COMPARATOR, map.comparator()); |
| } |
| |
| public void testTreeMapWithInitialMap() { |
| SortedMap<Integer, Integer> map = Maps.newTreeMap(); |
| map.put(5, 10); |
| map.put(3, 20); |
| map.put(1, 30); |
| TreeMap<Integer, Integer> copy = Maps.newTreeMap(map); |
| assertEquals(copy, map); |
| assertSame(copy.comparator(), map.comparator()); |
| } |
| |
| public enum SomeEnum { SOME_INSTANCE } |
| |
| public void testEnumMap() { |
| EnumMap<SomeEnum, Integer> map = Maps.newEnumMap(SomeEnum.class); |
| assertEquals(Collections.emptyMap(), map); |
| map.put(SomeEnum.SOME_INSTANCE, 0); |
| assertEquals(Collections.singletonMap(SomeEnum.SOME_INSTANCE, 0), map); |
| } |
| |
| public void testEnumMapNullClass() { |
| try { |
| Maps.<SomeEnum, Long>newEnumMap((Class<MapsTest.SomeEnum>) null); |
| fail("no exception thrown"); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| public void testEnumMapWithInitialEnumMap() { |
| EnumMap<SomeEnum, Integer> original = Maps.newEnumMap(SomeEnum.class); |
| original.put(SomeEnum.SOME_INSTANCE, 0); |
| EnumMap<SomeEnum, Integer> copy = Maps.newEnumMap(original); |
| assertEquals(original, copy); |
| } |
| |
| public void testEnumMapWithInitialEmptyEnumMap() { |
| EnumMap<SomeEnum, Integer> original = Maps.newEnumMap(SomeEnum.class); |
| EnumMap<SomeEnum, Integer> copy = Maps.newEnumMap(original); |
| assertEquals(original, copy); |
| assertNotSame(original, copy); |
| } |
| |
| public void testEnumMapWithInitialMap() { |
| HashMap<SomeEnum, Integer> original = Maps.newHashMap(); |
| original.put(SomeEnum.SOME_INSTANCE, 0); |
| EnumMap<SomeEnum, Integer> copy = Maps.newEnumMap(original); |
| assertEquals(original, copy); |
| } |
| |
| public void testEnumMapWithInitialEmptyMap() { |
| Map<SomeEnum, Integer> original = Maps.newHashMap(); |
| try { |
| Maps.newEnumMap(original); |
| fail("Empty map must result in an IllegalArgumentException"); |
| } catch (IllegalArgumentException expected) {} |
| } |
| |
| public void testToStringImplWithNullKeys() throws Exception { |
| Map<String, String> hashmap = Maps.newHashMap(); |
| hashmap.put("foo", "bar"); |
| hashmap.put(null, "baz"); |
| |
| assertEquals(hashmap.toString(), Maps.toStringImpl(hashmap)); |
| } |
| |
| public void testToStringImplWithNullValues() throws Exception { |
| Map<String, String> hashmap = Maps.newHashMap(); |
| hashmap.put("foo", "bar"); |
| hashmap.put("baz", null); |
| |
| assertEquals(hashmap.toString(), Maps.toStringImpl(hashmap)); |
| } |
| |
| @GwtIncompatible("NullPointerTester") |
| public void testNullPointerExceptions() { |
| new NullPointerTester().testAllPublicStaticMethods(Maps.class); |
| } |
| |
| private static final Map<Integer, Integer> EMPTY |
| = Collections.emptyMap(); |
| private static final Map<Integer, Integer> SINGLETON |
| = Collections.singletonMap(1, 2); |
| |
| public void testMapDifferenceEmptyEmpty() { |
| MapDifference<Integer, Integer> diff = Maps.difference(EMPTY, EMPTY); |
| assertTrue(diff.areEqual()); |
| assertEquals(EMPTY, diff.entriesOnlyOnLeft()); |
| assertEquals(EMPTY, diff.entriesOnlyOnRight()); |
| assertEquals(EMPTY, diff.entriesInCommon()); |
| assertEquals(EMPTY, diff.entriesDiffering()); |
| assertEquals("equal", diff.toString()); |
| } |
| |
| public void testMapDifferenceEmptySingleton() { |
| MapDifference<Integer, Integer> diff = Maps.difference(EMPTY, SINGLETON); |
| assertFalse(diff.areEqual()); |
| assertEquals(EMPTY, diff.entriesOnlyOnLeft()); |
| assertEquals(SINGLETON, diff.entriesOnlyOnRight()); |
| assertEquals(EMPTY, diff.entriesInCommon()); |
| assertEquals(EMPTY, diff.entriesDiffering()); |
| assertEquals("not equal: only on right={1=2}", diff.toString()); |
| } |
| |
| public void testMapDifferenceSingletonEmpty() { |
| MapDifference<Integer, Integer> diff = Maps.difference(SINGLETON, EMPTY); |
| assertFalse(diff.areEqual()); |
| assertEquals(SINGLETON, diff.entriesOnlyOnLeft()); |
| assertEquals(EMPTY, diff.entriesOnlyOnRight()); |
| assertEquals(EMPTY, diff.entriesInCommon()); |
| assertEquals(EMPTY, diff.entriesDiffering()); |
| assertEquals("not equal: only on left={1=2}", diff.toString()); |
| } |
| |
| public void testMapDifferenceTypical() { |
| Map<Integer, String> left = ImmutableMap.of( |
| 1, "a", 2, "b", 3, "c", 4, "d", 5, "e"); |
| Map<Integer, String> right = ImmutableMap.of( |
| 1, "a", 3, "f", 5, "g", 6, "z"); |
| |
| MapDifference<Integer, String> diff1 = Maps.difference(left, right); |
| assertFalse(diff1.areEqual()); |
| assertEquals(ImmutableMap.of(2, "b", 4, "d"), diff1.entriesOnlyOnLeft()); |
| assertEquals(ImmutableMap.of(6, "z"), diff1.entriesOnlyOnRight()); |
| assertEquals(ImmutableMap.of(1, "a"), diff1.entriesInCommon()); |
| assertEquals(ImmutableMap.of(3, |
| ValueDifferenceImpl.create("c", "f"), 5, |
| ValueDifferenceImpl.create("e", "g")), |
| diff1.entriesDiffering()); |
| assertEquals("not equal: only on left={2=b, 4=d}: only on right={6=z}: " |
| + "value differences={3=(c, f), 5=(e, g)}", diff1.toString()); |
| |
| MapDifference<Integer, String> diff2 = Maps.difference(right, left); |
| assertFalse(diff2.areEqual()); |
| assertEquals(ImmutableMap.of(6, "z"), diff2.entriesOnlyOnLeft()); |
| assertEquals(ImmutableMap.of(2, "b", 4, "d"), diff2.entriesOnlyOnRight()); |
| assertEquals(ImmutableMap.of(1, "a"), diff2.entriesInCommon()); |
| assertEquals(ImmutableMap.of(3, |
| ValueDifferenceImpl.create("f", "c"), 5, |
| ValueDifferenceImpl.create("g", "e")), |
| diff2.entriesDiffering()); |
| assertEquals("not equal: only on left={6=z}: only on right={2=b, 4=d}: " |
| + "value differences={3=(f, c), 5=(g, e)}", diff2.toString()); |
| } |
| |
| public void testMapDifferenceEquals() { |
| Map<Integer, String> left = ImmutableMap.of( |
| 1, "a", 2, "b", 3, "c", 4, "d", 5, "e"); |
| Map<Integer, String> right = ImmutableMap.of( |
| 1, "a", 3, "f", 5, "g", 6, "z"); |
| Map<Integer, String> right2 = ImmutableMap.of( |
| 1, "a", 3, "h", 5, "g", 6, "z"); |
| MapDifference<Integer, String> original = Maps.difference(left, right); |
| MapDifference<Integer, String> same = Maps.difference(left, right); |
| MapDifference<Integer, String> reverse = Maps.difference(right, left); |
| MapDifference<Integer, String> diff2 = Maps.difference(left, right2); |
| |
| new EqualsTester() |
| .addEqualityGroup(original, same) |
| .addEqualityGroup(reverse) |
| .addEqualityGroup(diff2) |
| .testEquals(); |
| } |
| |
| public void testMapDifferencePredicateTypical() { |
| Map<Integer, String> left = ImmutableMap.of( |
| 1, "a", 2, "b", 3, "c", 4, "d", 5, "e"); |
| Map<Integer, String> right = ImmutableMap.of( |
| 1, "A", 3, "F", 5, "G", 6, "Z"); |
| |
| // TODO(kevinb): replace with Ascii.caseInsensitiveEquivalence() when it |
| // exists |
| Equivalence<String> caseInsensitiveEquivalence = Equivalence.equals().onResultOf( |
| new Function<String, String>() { |
| @Override public String apply(String input) { |
| return input.toLowerCase(); |
| } |
| }); |
| |
| MapDifference<Integer, String> diff1 = Maps.difference(left, right, |
| caseInsensitiveEquivalence); |
| assertFalse(diff1.areEqual()); |
| assertEquals(ImmutableMap.of(2, "b", 4, "d"), diff1.entriesOnlyOnLeft()); |
| assertEquals(ImmutableMap.of(6, "Z"), diff1.entriesOnlyOnRight()); |
| assertEquals(ImmutableMap.of(1, "a"), diff1.entriesInCommon()); |
| assertEquals(ImmutableMap.of(3, |
| ValueDifferenceImpl.create("c", "F"), 5, |
| ValueDifferenceImpl.create("e", "G")), |
| diff1.entriesDiffering()); |
| assertEquals("not equal: only on left={2=b, 4=d}: only on right={6=Z}: " |
| + "value differences={3=(c, F), 5=(e, G)}", diff1.toString()); |
| |
| MapDifference<Integer, String> diff2 = Maps.difference(right, left, |
| caseInsensitiveEquivalence); |
| assertFalse(diff2.areEqual()); |
| assertEquals(ImmutableMap.of(6, "Z"), diff2.entriesOnlyOnLeft()); |
| assertEquals(ImmutableMap.of(2, "b", 4, "d"), diff2.entriesOnlyOnRight()); |
| assertEquals(ImmutableMap.of(1, "A"), diff2.entriesInCommon()); |
| assertEquals(ImmutableMap.of(3, |
| ValueDifferenceImpl.create("F", "c"), 5, |
| ValueDifferenceImpl.create("G", "e")), |
| diff2.entriesDiffering()); |
| assertEquals("not equal: only on left={6=Z}: only on right={2=b, 4=d}: " |
| + "value differences={3=(F, c), 5=(G, e)}", diff2.toString()); |
| } |
| |
| private static final SortedMap<Integer, Integer> SORTED_EMPTY = Maps.newTreeMap(); |
| private static final SortedMap<Integer, Integer> SORTED_SINGLETON = |
| ImmutableSortedMap.of(1, 2); |
| |
| public void testMapDifferenceOfSortedMapIsSorted() { |
| Map<Integer, Integer> map = SORTED_SINGLETON; |
| MapDifference<Integer, Integer> difference = Maps.difference(map, EMPTY); |
| assertTrue(difference instanceof SortedMapDifference); |
| } |
| |
| public void testSortedMapDifferenceEmptyEmpty() { |
| SortedMapDifference<Integer, Integer> diff = |
| Maps.difference(SORTED_EMPTY, SORTED_EMPTY); |
| assertTrue(diff.areEqual()); |
| assertEquals(SORTED_EMPTY, diff.entriesOnlyOnLeft()); |
| assertEquals(SORTED_EMPTY, diff.entriesOnlyOnRight()); |
| assertEquals(SORTED_EMPTY, diff.entriesInCommon()); |
| assertEquals(SORTED_EMPTY, diff.entriesDiffering()); |
| assertEquals("equal", diff.toString()); |
| } |
| |
| public void testSortedMapDifferenceEmptySingleton() { |
| SortedMapDifference<Integer, Integer> diff = |
| Maps.difference(SORTED_EMPTY, SORTED_SINGLETON); |
| assertFalse(diff.areEqual()); |
| assertEquals(SORTED_EMPTY, diff.entriesOnlyOnLeft()); |
| assertEquals(SORTED_SINGLETON, diff.entriesOnlyOnRight()); |
| assertEquals(SORTED_EMPTY, diff.entriesInCommon()); |
| assertEquals(SORTED_EMPTY, diff.entriesDiffering()); |
| assertEquals("not equal: only on right={1=2}", diff.toString()); |
| } |
| |
| public void testSortedMapDifferenceSingletonEmpty() { |
| SortedMapDifference<Integer, Integer> diff = |
| Maps.difference(SORTED_SINGLETON, SORTED_EMPTY); |
| assertFalse(diff.areEqual()); |
| assertEquals(SORTED_SINGLETON, diff.entriesOnlyOnLeft()); |
| assertEquals(SORTED_EMPTY, diff.entriesOnlyOnRight()); |
| assertEquals(SORTED_EMPTY, diff.entriesInCommon()); |
| assertEquals(SORTED_EMPTY, diff.entriesDiffering()); |
| assertEquals("not equal: only on left={1=2}", diff.toString()); |
| } |
| |
| public void testSortedMapDifferenceTypical() { |
| SortedMap<Integer, String> left = |
| ImmutableSortedMap.<Integer, String>reverseOrder() |
| .put(1, "a").put(2, "b").put(3, "c").put(4, "d").put(5, "e") |
| .build(); |
| |
| SortedMap<Integer, String> right = |
| ImmutableSortedMap.of(1, "a", 3, "f", 5, "g", 6, "z"); |
| |
| SortedMapDifference<Integer, String> diff1 = |
| Maps.difference(left, right); |
| assertFalse(diff1.areEqual()); |
| ASSERT.that(diff1.entriesOnlyOnLeft().entrySet()).has().exactly( |
| Maps.immutableEntry(4, "d"), Maps.immutableEntry(2, "b")).inOrder(); |
| ASSERT.that(diff1.entriesOnlyOnRight().entrySet()).has().item( |
| Maps.immutableEntry(6, "z")); |
| ASSERT.that(diff1.entriesInCommon().entrySet()).has().item( |
| Maps.immutableEntry(1, "a")); |
| ASSERT.that(diff1.entriesDiffering().entrySet()).has().exactly( |
| Maps.immutableEntry(5, ValueDifferenceImpl.create("e", "g")), |
| Maps.immutableEntry(3, ValueDifferenceImpl.create("c", "f"))).inOrder(); |
| assertEquals("not equal: only on left={4=d, 2=b}: only on right={6=z}: " |
| + "value differences={5=(e, g), 3=(c, f)}", diff1.toString()); |
| |
| SortedMapDifference<Integer, String> diff2 = |
| Maps.difference(right, left); |
| assertFalse(diff2.areEqual()); |
| ASSERT.that(diff2.entriesOnlyOnLeft().entrySet()).has().item( |
| Maps.immutableEntry(6, "z")); |
| ASSERT.that(diff2.entriesOnlyOnRight().entrySet()).has().exactly( |
| Maps.immutableEntry(2, "b"), Maps.immutableEntry(4, "d")).inOrder(); |
| ASSERT.that(diff1.entriesInCommon().entrySet()).has().item( |
| Maps.immutableEntry(1, "a")); |
| assertEquals(ImmutableMap.of( |
| 3, ValueDifferenceImpl.create("f", "c"), |
| 5, ValueDifferenceImpl.create("g", "e")), |
| diff2.entriesDiffering()); |
| assertEquals("not equal: only on left={6=z}: only on right={2=b, 4=d}: " |
| + "value differences={3=(f, c), 5=(g, e)}", diff2.toString()); |
| } |
| |
| public void testSortedMapDifferenceImmutable() { |
| SortedMap<Integer, String> left = Maps.newTreeMap( |
| ImmutableSortedMap.of(1, "a", 2, "b", 3, "c", 4, "d", 5, "e")); |
| SortedMap<Integer, String> right = |
| Maps.newTreeMap(ImmutableSortedMap.of(1, "a", 3, "f", 5, "g", 6, "z")); |
| |
| SortedMapDifference<Integer, String> diff1 = |
| Maps.difference(left, right); |
| left.put(6, "z"); |
| assertFalse(diff1.areEqual()); |
| ASSERT.that(diff1.entriesOnlyOnLeft().entrySet()).has().exactly( |
| Maps.immutableEntry(2, "b"), Maps.immutableEntry(4, "d")).inOrder(); |
| ASSERT.that(diff1.entriesOnlyOnRight().entrySet()).has().item( |
| Maps.immutableEntry(6, "z")); |
| ASSERT.that(diff1.entriesInCommon().entrySet()).has().item( |
| Maps.immutableEntry(1, "a")); |
| ASSERT.that(diff1.entriesDiffering().entrySet()).has().exactly( |
| Maps.immutableEntry(3, ValueDifferenceImpl.create("c", "f")), |
| Maps.immutableEntry(5, ValueDifferenceImpl.create("e", "g"))).inOrder(); |
| try { |
| diff1.entriesInCommon().put(7, "x"); |
| fail(); |
| } catch (UnsupportedOperationException expected) { |
| } |
| try { |
| diff1.entriesOnlyOnLeft().put(7, "x"); |
| fail(); |
| } catch (UnsupportedOperationException expected) { |
| } |
| try { |
| diff1.entriesOnlyOnRight().put(7, "x"); |
| fail(); |
| } catch (UnsupportedOperationException expected) { |
| } |
| } |
| |
| public void testSortedMapDifferenceEquals() { |
| SortedMap<Integer, String> left = |
| ImmutableSortedMap.of(1, "a", 2, "b", 3, "c", 4, "d", 5, "e"); |
| SortedMap<Integer, String> right = |
| ImmutableSortedMap.of(1, "a", 3, "f", 5, "g", 6, "z"); |
| SortedMap<Integer, String> right2 = |
| ImmutableSortedMap.of(1, "a", 3, "h", 5, "g", 6, "z"); |
| SortedMapDifference<Integer, String> original = |
| Maps.difference(left, right); |
| SortedMapDifference<Integer, String> same = |
| Maps.difference(left, right); |
| SortedMapDifference<Integer, String> reverse = |
| Maps.difference(right, left); |
| SortedMapDifference<Integer, String> diff2 = |
| Maps.difference(left, right2); |
| |
| new EqualsTester() |
| .addEqualityGroup(original, same) |
| .addEqualityGroup(reverse) |
| .addEqualityGroup(diff2) |
| .testEquals(); |
| } |
| |
| private static final Function<String, Integer> LENGTH_FUNCTION = |
| new Function<String, Integer>() { |
| @Override |
| public Integer apply(String input) { |
| return input.length(); |
| } |
| }; |
| |
| public void testAsMap() { |
| Set<String> strings = ImmutableSet.of("one", "two", "three"); |
| Map<String, Integer> map = Maps.asMap(strings, LENGTH_FUNCTION); |
| assertEquals(ImmutableMap.of("one", 3, "two", 3, "three", 5), map); |
| assertEquals(Integer.valueOf(5), map.get("three")); |
| assertNull(map.get("five")); |
| ASSERT.that(map.entrySet()).has().exactly( |
| mapEntry("one", 3), |
| mapEntry("two", 3), |
| mapEntry("three", 5)).inOrder(); |
| } |
| |
| public void testAsMapReadsThrough() { |
| Set<String> strings = Sets.newLinkedHashSet(); |
| Collections.addAll(strings, "one", "two", "three"); |
| Map<String, Integer> map = Maps.asMap(strings, LENGTH_FUNCTION); |
| assertEquals(ImmutableMap.of("one", 3, "two", 3, "three", 5), map); |
| assertNull(map.get("four")); |
| strings.add("four"); |
| assertEquals(ImmutableMap.of("one", 3, "two", 3, "three", 5, "four", 4), map); |
| assertEquals(Integer.valueOf(4), map.get("four")); |
| } |
| |
| public void testAsMapWritesThrough() { |
| Set<String> strings = Sets.newLinkedHashSet(); |
| Collections.addAll(strings, "one", "two", "three"); |
| Map<String, Integer> map = Maps.asMap(strings, LENGTH_FUNCTION); |
| assertEquals(ImmutableMap.of("one", 3, "two", 3, "three", 5), map); |
| assertEquals(Integer.valueOf(3), map.remove("two")); |
| ASSERT.that(strings).has().exactly("one", "three").inOrder(); |
| } |
| |
| public void testAsMapEmpty() { |
| Set<String> strings = ImmutableSet.of(); |
| Map<String, Integer> map = Maps.asMap(strings, LENGTH_FUNCTION); |
| ASSERT.that(map.entrySet()).isEmpty(); |
| assertTrue(map.isEmpty()); |
| assertNull(map.get("five")); |
| } |
| |
| private static class NonNavigableSortedSet |
| extends ForwardingSortedSet<String> { |
| private final SortedSet<String> delegate = Sets.newTreeSet(); |
| |
| @Override |
| protected SortedSet<String> delegate() { |
| return delegate; |
| } |
| } |
| |
| public void testAsMapReturnsSortedMapForSortedSetInput() { |
| Set<String> set = new NonNavigableSortedSet(); |
| assertTrue(Maps.asMap(set, Functions.identity()) instanceof SortedMap); |
| } |
| |
| public void testAsMapSorted() { |
| SortedSet<String> strings = new NonNavigableSortedSet(); |
| Collections.addAll(strings, "one", "two", "three"); |
| SortedMap<String, Integer> map = Maps.asMap(strings, LENGTH_FUNCTION); |
| assertEquals(ImmutableMap.of("one", 3, "two", 3, "three", 5), map); |
| assertEquals(Integer.valueOf(5), map.get("three")); |
| assertNull(map.get("five")); |
| ASSERT.that(map.entrySet()).has().exactly( |
| mapEntry("one", 3), |
| mapEntry("three", 5), |
| mapEntry("two", 3)).inOrder(); |
| ASSERT.that(map.tailMap("onea").entrySet()).has().exactly( |
| mapEntry("three", 5), |
| mapEntry("two", 3)).inOrder(); |
| ASSERT.that(map.subMap("one", "two").entrySet()).has().exactly( |
| mapEntry("one", 3), |
| mapEntry("three", 5)).inOrder(); |
| } |
| |
| public void testAsMapSortedReadsThrough() { |
| SortedSet<String> strings = new NonNavigableSortedSet(); |
| Collections.addAll(strings, "one", "two", "three"); |
| SortedMap<String, Integer> map = Maps.asMap(strings, LENGTH_FUNCTION); |
| assertNull(map.comparator()); |
| assertEquals(ImmutableSortedMap.of("one", 3, "two", 3, "three", 5), map); |
| assertNull(map.get("four")); |
| strings.add("four"); |
| assertEquals( |
| ImmutableSortedMap.of("one", 3, "two", 3, "three", 5, "four", 4), |
| map); |
| assertEquals(Integer.valueOf(4), map.get("four")); |
| SortedMap<String, Integer> headMap = map.headMap("two"); |
| assertEquals( |
| ImmutableSortedMap.of("four", 4, "one", 3, "three", 5), |
| headMap); |
| strings.add("five"); |
| strings.remove("one"); |
| assertEquals( |
| ImmutableSortedMap.of("five", 4, "four", 4, "three", 5), |
| headMap); |
| ASSERT.that(map.entrySet()).has().exactly( |
| mapEntry("five", 4), |
| mapEntry("four", 4), |
| mapEntry("three", 5), |
| mapEntry("two", 3)).inOrder(); |
| } |
| |
| public void testAsMapSortedWritesThrough() { |
| SortedSet<String> strings = new NonNavigableSortedSet(); |
| Collections.addAll(strings, "one", "two", "three"); |
| SortedMap<String, Integer> map = Maps.asMap(strings, LENGTH_FUNCTION); |
| assertEquals(ImmutableMap.of("one", 3, "two", 3, "three", 5), map); |
| assertEquals(Integer.valueOf(3), map.remove("two")); |
| ASSERT.that(strings).has().exactly("one", "three").inOrder(); |
| } |
| |
| public void testAsMapSortedSubViewKeySetsDoNotSupportAdd() { |
| SortedMap<String, Integer> map = Maps.asMap( |
| new NonNavigableSortedSet(), LENGTH_FUNCTION); |
| try { |
| map.subMap("a", "z").keySet().add("a"); |
| fail(); |
| } catch (UnsupportedOperationException expected) { |
| } |
| try { |
| map.tailMap("a").keySet().add("a"); |
| fail(); |
| } catch (UnsupportedOperationException expected) { |
| } |
| try { |
| map.headMap("r").keySet().add("a"); |
| fail(); |
| } catch (UnsupportedOperationException expected) { |
| } |
| try { |
| map.headMap("r").tailMap("m").keySet().add("a"); |
| fail(); |
| } catch (UnsupportedOperationException expected) { |
| } |
| } |
| |
| public void testAsMapSortedEmpty() { |
| SortedSet<String> strings = new NonNavigableSortedSet(); |
| SortedMap<String, Integer> map = Maps.asMap(strings, LENGTH_FUNCTION); |
| ASSERT.that(map.entrySet()).isEmpty(); |
| assertTrue(map.isEmpty()); |
| assertNull(map.get("five")); |
| } |
| |
| public void testToMap() { |
| Iterable<String> strings = ImmutableList.of("one", "two", "three"); |
| ImmutableMap<String, Integer> map = Maps.toMap(strings, LENGTH_FUNCTION); |
| assertEquals(ImmutableMap.of("one", 3, "two", 3, "three", 5), map); |
| ASSERT.that(map.entrySet()).has().exactly( |
| mapEntry("one", 3), |
| mapEntry("two", 3), |
| mapEntry("three", 5)).inOrder(); |
| } |
| |
| public void testToMapIterator() { |
| Iterator<String> strings = ImmutableList.of("one", "two", "three").iterator(); |
| ImmutableMap<String, Integer> map = Maps.toMap(strings, LENGTH_FUNCTION); |
| assertEquals(ImmutableMap.of("one", 3, "two", 3, "three", 5), map); |
| ASSERT.that(map.entrySet()).has().exactly( |
| mapEntry("one", 3), |
| mapEntry("two", 3), |
| mapEntry("three", 5)).inOrder(); |
| } |
| |
| public void testToMapWithDuplicateKeys() { |
| Iterable<String> strings = ImmutableList.of("one", "two", "three", "two", "one"); |
| ImmutableMap<String, Integer> map = Maps.toMap(strings, LENGTH_FUNCTION); |
| assertEquals(ImmutableMap.of("one", 3, "two", 3, "three", 5), map); |
| ASSERT.that(map.entrySet()).has().exactly( |
| mapEntry("one", 3), |
| mapEntry("two", 3), |
| mapEntry("three", 5)).inOrder(); |
| } |
| |
| public void testToMapWithNullKeys() { |
| Iterable<String> strings = Arrays.asList("one", null, "three"); |
| try { |
| Maps.toMap(strings, Functions.constant("foo")); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| public void testToMapWithNullValues() { |
| Iterable<String> strings = ImmutableList.of("one", "two", "three"); |
| try { |
| Maps.toMap(strings, Functions.constant(null)); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| private static final BiMap<Integer, String> INT_TO_STRING_MAP = |
| new ImmutableBiMap.Builder<Integer, String>() |
| .put(1, "one") |
| .put(2, "two") |
| .put(3, "three") |
| .build(); |
| |
| public void testUniqueIndexCollection() { |
| ImmutableMap<Integer, String> outputMap = |
| Maps.uniqueIndex(INT_TO_STRING_MAP.values(), |
| Functions.forMap(INT_TO_STRING_MAP.inverse())); |
| assertEquals(INT_TO_STRING_MAP, outputMap); |
| } |
| |
| public void testUniqueIndexIterable() { |
| ImmutableMap<Integer, String> outputMap = |
| Maps.uniqueIndex(new Iterable<String>() { |
| @Override |
| public Iterator<String> iterator() { |
| return INT_TO_STRING_MAP.values().iterator(); |
| } |
| }, |
| Functions.forMap(INT_TO_STRING_MAP.inverse())); |
| assertEquals(INT_TO_STRING_MAP, outputMap); |
| } |
| |
| public void testUniqueIndexIterator() { |
| ImmutableMap<Integer, String> outputMap = |
| Maps.uniqueIndex(INT_TO_STRING_MAP.values().iterator(), |
| Functions.forMap(INT_TO_STRING_MAP.inverse())); |
| assertEquals(INT_TO_STRING_MAP, outputMap); |
| } |
| |
| /** Can't create the map if more than one value maps to the same key. */ |
| public void testUniqueIndexDuplicates() { |
| try { |
| Maps.uniqueIndex(ImmutableSet.of("one", "uno"), Functions.constant(1)); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| /** Null values are not allowed. */ |
| public void testUniqueIndexNullValue() { |
| List<String> listWithNull = Lists.newArrayList((String) null); |
| try { |
| Maps.uniqueIndex(listWithNull, Functions.constant(1)); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| /** Null keys aren't allowed either. */ |
| public void testUniqueIndexNullKey() { |
| List<String> oneStringList = Lists.newArrayList("foo"); |
| try { |
| Maps.uniqueIndex(oneStringList, Functions.constant(null)); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| @GwtIncompatible("Maps.fromProperties") |
| @SuppressWarnings("deprecation") // StringBufferInputStream |
| public void testFromProperties() throws IOException { |
| Properties testProp = new Properties(); |
| |
| Map<String, String> result = Maps.fromProperties(testProp); |
| assertTrue(result.isEmpty()); |
| testProp.setProperty("first", "true"); |
| |
| result = Maps.fromProperties(testProp); |
| assertEquals("true", result.get("first")); |
| assertEquals(1, result.size()); |
| testProp.setProperty("second", "null"); |
| |
| result = Maps.fromProperties(testProp); |
| assertEquals("true", result.get("first")); |
| assertEquals("null", result.get("second")); |
| assertEquals(2, result.size()); |
| |
| // Now test values loaded from a stream. |
| String props = "test\n second = 2\n Third item : a short phrase "; |
| |
| testProp.load(new StringBufferInputStream(props)); |
| |
| result = Maps.fromProperties(testProp); |
| assertEquals(4, result.size()); |
| assertEquals("true", result.get("first")); |
| assertEquals("", result.get("test")); |
| assertEquals("2", result.get("second")); |
| assertEquals("item : a short phrase ", result.get("Third")); |
| assertFalse(result.containsKey("not here")); |
| |
| // Test loading system properties |
| result = Maps.fromProperties(System.getProperties()); |
| assertTrue(result.containsKey("java.version")); |
| |
| // Test that defaults work, too. |
| testProp = new Properties(System.getProperties()); |
| String override = "test\njava.version : hidden"; |
| |
| testProp.load(new StringBufferInputStream(override)); |
| |
| result = Maps.fromProperties(testProp); |
| assertTrue(result.size() > 2); |
| assertEquals("", result.get("test")); |
| assertEquals("hidden", result.get("java.version")); |
| assertNotSame(System.getProperty("java.version"), |
| result.get("java.version")); |
| } |
| |
| @GwtIncompatible("Maps.fromProperties") |
| @SuppressWarnings("serial") // never serialized |
| public void testFromPropertiesNullKey() { |
| Properties properties = new Properties() { |
| @Override public Enumeration<?> propertyNames() { |
| return Iterators.asEnumeration( |
| Arrays.asList(null, "first", "second").iterator()); |
| } |
| }; |
| properties.setProperty("first", "true"); |
| properties.setProperty("second", "null"); |
| |
| try { |
| Maps.fromProperties(properties); |
| fail(); |
| } catch (NullPointerException expected) {} |
| } |
| |
| @GwtIncompatible("Maps.fromProperties") |
| @SuppressWarnings("serial") // never serialized |
| public void testFromPropertiesNonStringKeys() { |
| Properties properties = new Properties() { |
| @Override public Enumeration<?> propertyNames() { |
| return Iterators.asEnumeration( |
| Arrays.<Object>asList(Integer.valueOf(123), "first").iterator()); |
| } |
| }; |
| |
| try { |
| Maps.fromProperties(properties); |
| fail(); |
| } catch (ClassCastException expected) {} |
| } |
| |
| /** |
| * Constructs a "nefarious" map entry with the specified key and value, |
| * meaning an entry that is suitable for testing that map entries cannot be |
| * modified via a nefarious implementation of equals. This is used for testing |
| * unmodifiable collections of map entries; for example, it should not be |
| * possible to access the raw (modifiable) map entry via a nefarious equals |
| * method. |
| */ |
| public static <K, V> Map.Entry<K, V> nefariousEntry( |
| final K key, final V value) { |
| return new AbstractMapEntry<K, V>() { |
| @Override public K getKey() { |
| return key; |
| } |
| @Override public V getValue() { |
| return value; |
| } |
| @Override public V setValue(V value) { |
| throw new UnsupportedOperationException(); |
| } |
| @SuppressWarnings("unchecked") |
| @Override public boolean equals(Object o) { |
| if (o instanceof Map.Entry) { |
| Map.Entry<K, V> e = (Map.Entry<K, V>) o; |
| e.setValue(value); // muhahaha! |
| } |
| return super.equals(o); |
| } |
| }; |
| } |
| |
| public void testAsConverter_nominal() throws Exception { |
| ImmutableBiMap<String, Integer> biMap = ImmutableBiMap.of( |
| "one", 1, |
| "two", 2); |
| Converter<String, Integer> converter = Maps.asConverter(biMap); |
| for (Entry<String, Integer> entry : biMap.entrySet()) { |
| assertSame(entry.getValue(), converter.convert(entry.getKey())); |
| } |
| } |
| |
| public void testAsConverter_inverse() throws Exception { |
| ImmutableBiMap<String, Integer> biMap = ImmutableBiMap.of( |
| "one", 1, |
| "two", 2); |
| Converter<String, Integer> converter = Maps.asConverter(biMap); |
| for (Entry<String, Integer> entry : biMap.entrySet()) { |
| assertSame(entry.getKey(), converter.reverse().convert(entry.getValue())); |
| } |
| } |
| |
| public void testAsConverter_noMapping() throws Exception { |
| ImmutableBiMap<String, Integer> biMap = ImmutableBiMap.of( |
| "one", 1, |
| "two", 2); |
| Converter<String, Integer> converter = Maps.asConverter(biMap); |
| try { |
| converter.convert("three"); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| public void testAsConverter_nullConversions() throws Exception { |
| ImmutableBiMap<String, Integer> biMap = ImmutableBiMap.of( |
| "one", 1, |
| "two", 2); |
| Converter<String, Integer> converter = Maps.asConverter(biMap); |
| assertNull(converter.convert(null)); |
| assertNull(converter.reverse().convert(null)); |
| } |
| |
| public void testAsConverter_isAView() throws Exception { |
| BiMap<String, Integer> biMap = HashBiMap.create(); |
| biMap.put("one", 1); |
| biMap.put("two", 2); |
| Converter<String, Integer> converter = Maps.asConverter(biMap); |
| |
| assertSame(1, converter.convert("one")); |
| assertSame(2, converter.convert("two")); |
| try { |
| converter.convert("three"); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| |
| biMap.put("three", 3); |
| |
| assertSame(1, converter.convert("one")); |
| assertSame(2, converter.convert("two")); |
| assertSame(3, converter.convert("three")); |
| } |
| |
| public void testAsConverter_withNullMapping() throws Exception { |
| BiMap<String, Integer> biMap = HashBiMap.create(); |
| biMap.put("one", 1); |
| biMap.put("two", 2); |
| biMap.put("three", null); |
| try { |
| Maps.asConverter(biMap).convert("three"); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| public void testAsConverter_toString() { |
| ImmutableBiMap<String, Integer> biMap = ImmutableBiMap.of( |
| "one", 1, |
| "two", 2); |
| Converter<String, Integer> converter = Maps.asConverter(biMap); |
| assertEquals("Maps.asConverter({one=1, two=2})", converter.toString()); |
| } |
| |
| public void testAsConverter_serialization() { |
| ImmutableBiMap<String, Integer> biMap = ImmutableBiMap.of( |
| "one", 1, |
| "two", 2); |
| Converter<String, Integer> converter = Maps.asConverter(biMap); |
| SerializableTester.reserializeAndAssert(converter); |
| } |
| |
| public void testUnmodifiableBiMap() { |
| BiMap<Integer, String> mod = HashBiMap.create(); |
| mod.put(1, "one"); |
| mod.put(2, "two"); |
| mod.put(3, "three"); |
| |
| BiMap<Number, String> unmod = Maps.<Number, String>unmodifiableBiMap(mod); |
| |
| /* No aliasing on inverse operations. */ |
| assertSame(unmod.inverse(), unmod.inverse()); |
| assertSame(unmod, unmod.inverse().inverse()); |
| |
| /* Unmodifiable is a view. */ |
| mod.put(4, "four"); |
| assertEquals(true, unmod.get(4).equals("four")); |
| assertEquals(true, unmod.inverse().get("four").equals(4)); |
| |
| /* UnsupportedOperationException on direct modifications. */ |
| try { |
| unmod.put(4, "four"); |
| fail("UnsupportedOperationException expected"); |
| } catch (UnsupportedOperationException expected) {} |
| try { |
| unmod.forcePut(4, "four"); |
| fail("UnsupportedOperationException expected"); |
| } catch (UnsupportedOperationException expected) {} |
| try { |
| unmod.putAll(Collections.singletonMap(4, "four")); |
| fail("UnsupportedOperationException expected"); |
| } catch (UnsupportedOperationException expected) {} |
| |
| /* UnsupportedOperationException on indirect modifications. */ |
| BiMap<String, Number> inverse = unmod.inverse(); |
| try { |
| inverse.put("four", 4); |
| fail("UnsupportedOperationException expected"); |
| } catch (UnsupportedOperationException expected) {} |
| try { |
| inverse.forcePut("four", 4); |
| fail("UnsupportedOperationException expected"); |
| } catch (UnsupportedOperationException expected) {} |
| try { |
| inverse.putAll(Collections.singletonMap("four", 4)); |
| fail("UnsupportedOperationException expected"); |
| } catch (UnsupportedOperationException expected) {} |
| Set<String> values = unmod.values(); |
| try { |
| values.remove("four"); |
| fail("UnsupportedOperationException expected"); |
| } catch (UnsupportedOperationException expected) {} |
| Set<Map.Entry<Number, String>> entries = unmod.entrySet(); |
| Map.Entry<Number, String> entry = entries.iterator().next(); |
| try { |
| entry.setValue("four"); |
| fail("UnsupportedOperationException expected"); |
| } catch (UnsupportedOperationException expected) {} |
| @SuppressWarnings("unchecked") |
| Map.Entry<Integer, String> entry2 |
| = (Map.Entry<Integer, String>) entries.toArray()[0]; |
| try { |
| entry2.setValue("four"); |
| fail("UnsupportedOperationException expected"); |
| } catch (UnsupportedOperationException expected) {} |
| } |
| |
| public void testImmutableEntry() { |
| Map.Entry<String, Integer> e = Maps.immutableEntry("foo", 1); |
| assertEquals("foo", e.getKey()); |
| assertEquals(1, (int) e.getValue()); |
| try { |
| e.setValue(2); |
| fail("UnsupportedOperationException expected"); |
| } catch (UnsupportedOperationException expected) {} |
| assertEquals("foo=1", e.toString()); |
| assertEquals(101575, e.hashCode()); |
| } |
| |
| public void testImmutableEntryNull() { |
| Map.Entry<String, Integer> e |
| = Maps.immutableEntry((String) null, (Integer) null); |
| assertNull(e.getKey()); |
| assertNull(e.getValue()); |
| try { |
| e.setValue(null); |
| fail("UnsupportedOperationException expected"); |
| } catch (UnsupportedOperationException expected) {} |
| assertEquals("null=null", e.toString()); |
| assertEquals(0, e.hashCode()); |
| } |
| |
| /** See {@link SynchronizedBiMapTest} for more tests. */ |
| public void testSynchronizedBiMap() { |
| BiMap<String, Integer> bimap = HashBiMap.create(); |
| bimap.put("one", 1); |
| BiMap<String, Integer> sync = Maps.synchronizedBiMap(bimap); |
| bimap.put("two", 2); |
| sync.put("three", 3); |
| assertEquals(ImmutableSet.of(1, 2, 3), bimap.inverse().keySet()); |
| assertEquals(ImmutableSet.of(1, 2, 3), sync.inverse().keySet()); |
| } |
| |
| private static final Predicate<String> NOT_LENGTH_3 |
| = new Predicate<String>() { |
| @Override |
| public boolean apply(String input) { |
| return input == null || input.length() != 3; |
| } |
| }; |
| |
| private static final Predicate<Integer> EVEN |
| = new Predicate<Integer>() { |
| @Override |
| public boolean apply(Integer input) { |
| return input == null || input % 2 == 0; |
| } |
| }; |
| |
| private static final Predicate<Entry<String, Integer>> CORRECT_LENGTH |
| = new Predicate<Entry<String, Integer>>() { |
| @Override |
| public boolean apply(Entry<String, Integer> input) { |
| return input.getKey().length() == input.getValue(); |
| } |
| }; |
| |
| private static final Function<Integer, Double> SQRT_FUNCTION = new Function<Integer, Double>() { |
| @Override |
| public Double apply(Integer in) { |
| return Math.sqrt(in); |
| } |
| }; |
| |
| public static class FilteredMapTest extends TestCase { |
| Map<String, Integer> createUnfiltered() { |
| return Maps.newHashMap(); |
| } |
| |
| public void testFilteredKeysIllegalPut() { |
| Map<String, Integer> unfiltered = createUnfiltered(); |
| Map<String, Integer> filtered = Maps.filterKeys(unfiltered, NOT_LENGTH_3); |
| filtered.put("a", 1); |
| filtered.put("b", 2); |
| assertEquals(ImmutableMap.of("a", 1, "b", 2), filtered); |
| |
| try { |
| filtered.put("yyy", 3); |
| fail(); |
| } catch (IllegalArgumentException expected) {} |
| } |
| |
| public void testFilteredKeysIllegalPutAll() { |
| Map<String, Integer> unfiltered = createUnfiltered(); |
| Map<String, Integer> filtered = Maps.filterKeys(unfiltered, NOT_LENGTH_3); |
| filtered.put("a", 1); |
| filtered.put("b", 2); |
| assertEquals(ImmutableMap.of("a", 1, "b", 2), filtered); |
| |
| try { |
| filtered.putAll(ImmutableMap.of("c", 3, "zzz", 4, "b", 5)); |
| fail(); |
| } catch (IllegalArgumentException expected) {} |
| |
| assertEquals(ImmutableMap.of("a", 1, "b", 2), filtered); |
| } |
| |
| public void testFilteredKeysFilteredReflectsBackingChanges() { |
| Map<String, Integer> unfiltered = createUnfiltered(); |
| Map<String, Integer> filtered = Maps.filterKeys(unfiltered, NOT_LENGTH_3); |
| unfiltered.put("two", 2); |
| unfiltered.put("three", 3); |
| unfiltered.put("four", 4); |
| assertEquals(ImmutableMap.of("two", 2, "three", 3, "four", 4), unfiltered); |
| assertEquals(ImmutableMap.of("three", 3, "four", 4), filtered); |
| |
| unfiltered.remove("three"); |
| assertEquals(ImmutableMap.of("two", 2, "four", 4), unfiltered); |
| assertEquals(ImmutableMap.of("four", 4), filtered); |
| |
| unfiltered.clear(); |
| assertEquals(ImmutableMap.of(), unfiltered); |
| assertEquals(ImmutableMap.of(), filtered); |
| } |
| |
| public void testFilteredValuesIllegalPut() { |
| Map<String, Integer> unfiltered = createUnfiltered(); |
| Map<String, Integer> filtered = Maps.filterValues(unfiltered, EVEN); |
| filtered.put("a", 2); |
| unfiltered.put("b", 4); |
| unfiltered.put("c", 5); |
| assertEquals(ImmutableMap.of("a", 2, "b", 4), filtered); |
| |
| try { |
| filtered.put("yyy", 3); |
| fail(); |
| } catch (IllegalArgumentException expected) {} |
| assertEquals(ImmutableMap.of("a", 2, "b", 4), filtered); |
| } |
| |
| public void testFilteredValuesIllegalPutAll() { |
| Map<String, Integer> unfiltered = createUnfiltered(); |
| Map<String, Integer> filtered = Maps.filterValues(unfiltered, EVEN); |
| filtered.put("a", 2); |
| unfiltered.put("b", 4); |
| unfiltered.put("c", 5); |
| assertEquals(ImmutableMap.of("a", 2, "b", 4), filtered); |
| |
| try { |
| filtered.putAll(ImmutableMap.of("c", 4, "zzz", 5, "b", 6)); |
| fail(); |
| } catch (IllegalArgumentException expected) {} |
| assertEquals(ImmutableMap.of("a", 2, "b", 4), filtered); |
| } |
| |
| public void testFilteredValuesIllegalSetValue() { |
| Map<String, Integer> unfiltered = createUnfiltered(); |
| Map<String, Integer> filtered = Maps.filterValues(unfiltered, EVEN); |
| filtered.put("a", 2); |
| filtered.put("b", 4); |
| assertEquals(ImmutableMap.of("a", 2, "b", 4), filtered); |
| |
| Entry<String, Integer> entry = filtered.entrySet().iterator().next(); |
| try { |
| entry.setValue(5); |
| fail(); |
| } catch (IllegalArgumentException expected) {} |
| |
| assertEquals(ImmutableMap.of("a", 2, "b", 4), filtered); |
| } |
| |
| public void testFilteredValuesClear() { |
| Map<String, Integer> unfiltered = createUnfiltered(); |
| unfiltered.put("one", 1); |
| unfiltered.put("two", 2); |
| unfiltered.put("three", 3); |
| unfiltered.put("four", 4); |
| Map<String, Integer> filtered = Maps.filterValues(unfiltered, EVEN); |
| assertEquals(ImmutableMap.of("one", 1, "two", 2, "three", 3, "four", 4), |
| unfiltered); |
| assertEquals(ImmutableMap.of("two", 2, "four", 4), filtered); |
| |
| filtered.clear(); |
| assertEquals(ImmutableMap.of("one", 1, "three", 3), unfiltered); |
| assertTrue(filtered.isEmpty()); |
| } |
| |
| public void testFilteredEntriesIllegalPut() { |
| Map<String, Integer> unfiltered = createUnfiltered(); |
| unfiltered.put("cat", 3); |
| unfiltered.put("dog", 2); |
| unfiltered.put("horse", 5); |
| Map<String, Integer> filtered |
| = Maps.filterEntries(unfiltered, CORRECT_LENGTH); |
| assertEquals(ImmutableMap.of("cat", 3, "horse", 5), filtered); |
| |
| filtered.put("chicken", 7); |
| assertEquals(ImmutableMap.of("cat", 3, "horse", 5, "chicken", 7), filtered); |
| |
| try { |
| filtered.put("cow", 7); |
| fail(); |
| } catch (IllegalArgumentException expected) {} |
| assertEquals(ImmutableMap.of("cat", 3, "horse", 5, "chicken", 7), filtered); |
| } |
| |
| public void testFilteredEntriesIllegalPutAll() { |
| Map<String, Integer> unfiltered = createUnfiltered(); |
| unfiltered.put("cat", 3); |
| unfiltered.put("dog", 2); |
| unfiltered.put("horse", 5); |
| Map<String, Integer> filtered |
| = Maps.filterEntries(unfiltered, CORRECT_LENGTH); |
| assertEquals(ImmutableMap.of("cat", 3, "horse", 5), filtered); |
| |
| filtered.put("chicken", 7); |
| assertEquals(ImmutableMap.of("cat", 3, "horse", 5, "chicken", 7), filtered); |
| |
| try { |
| filtered.putAll(ImmutableMap.of("sheep", 5, "cow", 7)); |
| fail(); |
| } catch (IllegalArgumentException expected) {} |
| assertEquals(ImmutableMap.of("cat", 3, "horse", 5, "chicken", 7), filtered); |
| } |
| |
| public void testFilteredEntriesObjectPredicate() { |
| Map<String, Integer> unfiltered = createUnfiltered(); |
| unfiltered.put("cat", 3); |
| unfiltered.put("dog", 2); |
| unfiltered.put("horse", 5); |
| Predicate<Object> predicate = Predicates.alwaysFalse(); |
| Map<String, Integer> filtered |
| = Maps.filterEntries(unfiltered, predicate); |
| assertTrue(filtered.isEmpty()); |
| } |
| |
| public void testFilteredEntriesWildCardEntryPredicate() { |
| Map<String, Integer> unfiltered = createUnfiltered(); |
| unfiltered.put("cat", 3); |
| unfiltered.put("dog", 2); |
| unfiltered.put("horse", 5); |
| Predicate<Entry<?, ?>> predicate = new Predicate<Entry<?, ?>>() { |
| @Override |
| public boolean apply(Entry<?, ?> input) { |
| return "cat".equals(input.getKey()) |
| || Integer.valueOf(2) == input.getValue(); |
| } |
| }; |
| Map<String, Integer> filtered |
| = Maps.filterEntries(unfiltered, predicate); |
| assertEquals(ImmutableMap.of("cat", 3, "dog", 2), filtered); |
| } |
| } |
| |
| public static class FilteredSortedMapTest extends FilteredMapTest { |
| @Override |
| SortedMap<String, Integer> createUnfiltered() { |
| return Maps.newTreeMap(); |
| } |
| |
| public void testFilterKeysIdentifiesSortedMap() { |
| SortedMap<String, Integer> map = createUnfiltered(); |
| assertTrue(Maps.filterKeys((Map<String, Integer>) map, NOT_LENGTH_3) |
| instanceof SortedMap); |
| } |
| |
| public void testFilterValuesIdentifiesSortedMap() { |
| SortedMap<String, Integer> map = createUnfiltered(); |
| assertTrue(Maps.filterValues((Map<String, Integer>) map, EVEN) |
| instanceof SortedMap); |
| } |
| |
| public void testFilterEntriesIdentifiesSortedMap() { |
| SortedMap<String, Integer> map = createUnfiltered(); |
| assertTrue(Maps.filterEntries((Map<String, Integer>) map, CORRECT_LENGTH) |
| instanceof SortedMap); |
| } |
| |
| public void testFirstAndLastKeyFilteredMap() { |
| SortedMap<String, Integer> unfiltered = createUnfiltered(); |
| unfiltered.put("apple", 2); |
| unfiltered.put("banana", 6); |
| unfiltered.put("cat", 3); |
| unfiltered.put("dog", 5); |
| |
| SortedMap<String, Integer> filtered = Maps.filterEntries(unfiltered, CORRECT_LENGTH); |
| assertEquals("banana", filtered.firstKey()); |
| assertEquals("cat", filtered.lastKey()); |
| } |
| |
| public void testHeadSubTailMap_FilteredMap() { |
| SortedMap<String, Integer> unfiltered = createUnfiltered(); |
| unfiltered.put("apple", 2); |
| unfiltered.put("banana", 6); |
| unfiltered.put("cat", 4); |
| unfiltered.put("dog", 3); |
| SortedMap<String, Integer> filtered = Maps.filterEntries(unfiltered, CORRECT_LENGTH); |
| |
| assertEquals(ImmutableMap.of("banana", 6), filtered.headMap("dog")); |
| assertEquals(ImmutableMap.of(), filtered.headMap("banana")); |
| assertEquals(ImmutableMap.of("banana", 6, "dog", 3), filtered.headMap("emu")); |
| |
| assertEquals(ImmutableMap.of("banana", 6), filtered.subMap("banana", "dog")); |
| assertEquals(ImmutableMap.of("dog", 3), filtered.subMap("cat", "emu")); |
| |
| assertEquals(ImmutableMap.of("dog", 3), filtered.tailMap("cat")); |
| assertEquals(ImmutableMap.of("banana", 6, "dog", 3), filtered.tailMap("banana")); |
| } |
| } |
| |
| public static class FilteredBiMapTest extends FilteredMapTest { |
| @Override |
| BiMap<String, Integer> createUnfiltered() { |
| return HashBiMap.create(); |
| } |
| |
| public void testFilterKeysIdentifiesBiMap() { |
| BiMap<String, Integer> map = createUnfiltered(); |
| assertTrue(Maps.filterKeys((Map<String, Integer>) map, NOT_LENGTH_3) |
| instanceof BiMap); |
| } |
| |
| public void testFilterValuesIdentifiesBiMap() { |
| BiMap<String, Integer> map = createUnfiltered(); |
| assertTrue(Maps.filterValues((Map<String, Integer>) map, EVEN) |
| instanceof BiMap); |
| } |
| |
| public void testFilterEntriesIdentifiesBiMap() { |
| BiMap<String, Integer> map = createUnfiltered(); |
| assertTrue(Maps.filterEntries((Map<String, Integer>) map, CORRECT_LENGTH) |
| instanceof BiMap); |
| } |
| } |
| |
| public void testTransformValues() { |
| Map<String, Integer> map = ImmutableMap.of("a", 4, "b", 9); |
| Map<String, Double> transformed = transformValues(map, SQRT_FUNCTION); |
| |
| assertEquals(ImmutableMap.of("a", 2.0, "b", 3.0), transformed); |
| } |
| |
| public void testTransformValuesSecretlySorted() { |
| Map<String, Integer> map = |
| sortedNotNavigable(ImmutableSortedMap.of("a", 4, "b", 9)); |
| Map<String, Double> transformed = transformValues(map, SQRT_FUNCTION); |
| |
| assertEquals(ImmutableMap.of("a", 2.0, "b", 3.0), transformed); |
| assertTrue(transformed instanceof SortedMap); |
| } |
| |
| public void testTransformEntries() { |
| Map<String, String> map = ImmutableMap.of("a", "4", "b", "9"); |
| EntryTransformer<String, String, String> concat = |
| new EntryTransformer<String, String, String>() { |
| @Override |
| public String transformEntry(String key, String value) { |
| return key + value; |
| } |
| }; |
| Map<String, String> transformed = transformEntries(map, concat); |
| |
| assertEquals(ImmutableMap.of("a", "a4", "b", "b9"), transformed); |
| } |
| |
| public void testTransformEntriesSecretlySorted() { |
| Map<String, String> map = ImmutableSortedMap.of("a", "4", "b", "9"); |
| EntryTransformer<String, String, String> concat = |
| new EntryTransformer<String, String, String>() { |
| @Override |
| public String transformEntry(String key, String value) { |
| return key + value; |
| } |
| }; |
| Map<String, String> transformed = transformEntries(map, concat); |
| |
| assertEquals(ImmutableMap.of("a", "a4", "b", "b9"), transformed); |
| assertTrue(transformed instanceof SortedMap); |
| } |
| |
| @SuppressWarnings("unused") |
| public void testTransformEntriesGenerics() { |
| Map<Object, Object> map1 = ImmutableMap.<Object, Object>of(1, 2); |
| Map<Object, Number> map2 = ImmutableMap.<Object, Number>of(1, 2); |
| Map<Object, Integer> map3 = ImmutableMap.<Object, Integer>of(1, 2); |
| Map<Number, Object> map4 = ImmutableMap.<Number, Object>of(1, 2); |
| Map<Number, Number> map5 = ImmutableMap.<Number, Number>of(1, 2); |
| Map<Number, Integer> map6 = ImmutableMap.<Number, Integer>of(1, 2); |
| Map<Integer, Object> map7 = ImmutableMap.<Integer, Object>of(1, 2); |
| Map<Integer, Number> map8 = ImmutableMap.<Integer, Number>of(1, 2); |
| Map<Integer, Integer> map9 = ImmutableMap.<Integer, Integer>of(1, 2); |
| Map<? extends Number, ? extends Number> map0 = ImmutableMap.of(1, 2); |
| |
| EntryTransformer<Number, Number, Double> transformer = |
| new EntryTransformer<Number, Number, Double>() { |
| @Override |
| public Double transformEntry(Number key, Number value) { |
| return key.doubleValue() + value.doubleValue(); |
| } |
| }; |
| |
| Map<Object, Double> objectKeyed; |
| Map<Number, Double> numberKeyed; |
| Map<Integer, Double> integerKeyed; |
| |
| numberKeyed = transformEntries(map5, transformer); |
| numberKeyed = transformEntries(map6, transformer); |
| integerKeyed = transformEntries(map8, transformer); |
| integerKeyed = transformEntries(map9, transformer); |
| |
| Map<? extends Number, Double> wildcarded = transformEntries(map0, transformer); |
| |
| // Can't loosen the key type: |
| // objectKeyed = transformEntries(map5, transformer); |
| // objectKeyed = transformEntries(map6, transformer); |
| // objectKeyed = transformEntries(map8, transformer); |
| // objectKeyed = transformEntries(map9, transformer); |
| // numberKeyed = transformEntries(map8, transformer); |
| // numberKeyed = transformEntries(map9, transformer); |
| |
| // Can't loosen the value type: |
| // Map<Number, Number> looseValued1 = transformEntries(map5, transformer); |
| // Map<Number, Number> looseValued2 = transformEntries(map6, transformer); |
| // Map<Integer, Number> looseValued3 = transformEntries(map8, transformer); |
| // Map<Integer, Number> looseValued4 = transformEntries(map9, transformer); |
| |
| // Can't call with too loose a key: |
| // transformEntries(map1, transformer); |
| // transformEntries(map2, transformer); |
| // transformEntries(map3, transformer); |
| |
| // Can't call with too loose a value: |
| // transformEntries(map1, transformer); |
| // transformEntries(map4, transformer); |
| // transformEntries(map7, transformer); |
| } |
| |
| public void testTransformEntriesExample() { |
| Map<String, Boolean> options = |
| ImmutableMap.of("verbose", true, "sort", false); |
| EntryTransformer<String, Boolean, String> flagPrefixer = |
| new EntryTransformer<String, Boolean, String>() { |
| @Override |
| public String transformEntry(String key, Boolean value) { |
| return value ? key : "no" + key; |
| } |
| }; |
| Map<String, String> transformed = transformEntries(options, flagPrefixer); |
| assertEquals("{verbose=verbose, sort=nosort}", transformed.toString()); |
| } |
| |
| // Logically this would accept a NavigableMap, but that won't work under GWT. |
| private static <K, V> SortedMap<K, V> sortedNotNavigable( |
| final SortedMap<K, V> map) { |
| return new ForwardingSortedMap<K, V>() { |
| @Override protected SortedMap<K, V> delegate() { |
| return map; |
| } |
| }; |
| } |
| |
| public void testSortedMapTransformValues() { |
| SortedMap<String, Integer> map = |
| sortedNotNavigable(ImmutableSortedMap.of("a", 4, "b", 9)); |
| SortedMap<String, Double> transformed = |
| transformValues(map, SQRT_FUNCTION); |
| |
| /* |
| * We'd like to sanity check that we didn't get a NavigableMap out, but we |
| * can't easily do so while maintaining GWT compatibility. |
| */ |
| assertEquals(ImmutableSortedMap.of("a", 2.0, "b", 3.0), transformed); |
| } |
| |
| public void testSortedMapTransformEntries() { |
| SortedMap<String, String> map = |
| sortedNotNavigable(ImmutableSortedMap.of("a", "4", "b", "9")); |
| EntryTransformer<String, String, String> concat = |
| new EntryTransformer<String, String, String>() { |
| @Override |
| public String transformEntry(String key, String value) { |
| return key + value; |
| } |
| }; |
| SortedMap<String, String> transformed = transformEntries(map, concat); |
| |
| /* |
| * We'd like to sanity check that we didn't get a NavigableMap out, but we |
| * can't easily do so while maintaining GWT compatibility. |
| */ |
| assertEquals(ImmutableSortedMap.of("a", "a4", "b", "b9"), transformed); |
| } |
| } |
