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ImmutableBiMapFloodingTest.java
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ImmutableBiMapFloodingTest.java
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/*
* Copyright (C) 2008 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 com.google.common.annotations.GwtIncompatible;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.util.EnumSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.stream.Stream;
@GwtIncompatible
public class ImmutableBiMapFloodingTest extends AbstractHashFloodingTest<BiMap<Object, Object>> {
public ImmutableBiMapFloodingTest() {
super(
EnumSet.allOf(ConstructionPathway.class).stream()
.flatMap(
path ->
Stream.<Construction<BiMap<Object, Object>>>of(
keys ->
path.create(
Lists.transform(
keys, key -> Maps.immutableEntry(key, new Object()))),
keys ->
path.create(
Lists.transform(
keys, key -> Maps.immutableEntry(new Object(), key))),
keys ->
path.create(
Lists.transform(keys, key -> Maps.immutableEntry(key, key)))))
.collect(ImmutableList.toImmutableList()),
n -> n * Math.log(n),
ImmutableList.of(
QueryOp.create("BiMap.get", BiMap::get, Math::log),
QueryOp.create("BiMap.inverse.get", (bm, o) -> bm.inverse().get(o), Math::log)));
}
/** All the ways to create an ImmutableBiMap. */
enum ConstructionPathway {
COPY_OF_MAP {
@Override
public ImmutableBiMap<Object, Object> create(List<Entry<?, ?>> entries) {
Map<Object, Object> sourceMap = new LinkedHashMap<>();
for (Entry<?, ?> entry : entries) {
if (sourceMap.put(entry.getKey(), entry.getValue()) != null) {
throw new UnsupportedOperationException("duplicate key");
}
}
return ImmutableBiMap.copyOf(sourceMap);
}
},
COPY_OF_ENTRIES {
@Override
public ImmutableBiMap<Object, Object> create(List<Entry<?, ?>> entries) {
return ImmutableBiMap.copyOf(entries);
}
},
BUILDER_PUT_ONE_BY_ONE {
@Override
public ImmutableBiMap<Object, Object> create(List<Entry<?, ?>> entries) {
ImmutableBiMap.Builder<Object, Object> builder = ImmutableBiMap.builder();
for (Entry<?, ?> entry : entries) {
builder.put(entry.getKey(), entry.getValue());
}
return builder.buildOrThrow();
}
},
BUILDER_PUT_ALL_MAP {
@Override
public ImmutableBiMap<Object, Object> create(List<Entry<?, ?>> entries) {
Map<Object, Object> sourceMap = new LinkedHashMap<>();
for (Entry<?, ?> entry : entries) {
if (sourceMap.put(entry.getKey(), entry.getValue()) != null) {
throw new UnsupportedOperationException("duplicate key");
}
}
ImmutableBiMap.Builder<Object, Object> builder = ImmutableBiMap.builder();
builder.putAll(sourceMap);
return builder.buildOrThrow();
}
},
BUILDER_PUT_ALL_ENTRIES {
@Override
public ImmutableBiMap<Object, Object> create(List<Entry<?, ?>> entries) {
return ImmutableBiMap.builder().putAll(entries).buildOrThrow();
}
},
FORCE_JDK {
@Override
public ImmutableBiMap<Object, Object> create(List<Entry<?, ?>> entries) {
return ImmutableBiMap.builder().putAll(entries).buildJdkBacked();
}
};
@CanIgnoreReturnValue
public abstract ImmutableBiMap<Object, Object> create(List<Entry<?, ?>> entries);
}
}