MapTestFactory.java

/*
 * Copyright 2015 Ben Manes. All Rights Reserved.
 *
 * 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.github.benmanes.caffeine.cache;

import java.util.Map;
import java.util.Map.Entry;
import java.util.function.Supplier;

import com.google.common.collect.testing.MapTestSuiteBuilder;
import com.google.common.collect.testing.TestStringMapGenerator;
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 junit.framework.Test;

/**
 * A JUnit test suite factory for the map tests from Guava's testlib.
 *
 * @author ben.manes@gmail.com (Ben Manes)
 */
final class MapTestFactory {

  private MapTestFactory() {}

  /**
   * Returns a test suite.
   *
   * @param name the name of the cache type under test
   * @param supplier the cache as a map
   * @return a suite of tests
   */
  protected static Test suite(String name, Supplier<Map<String, String>> supplier) {
    return MapTestSuiteBuilder
        .using(new TestStringMapGenerator() {
          @Override protected Map<String, String> create(Entry<String, String>[] entries) {
            Map<String, String> map = supplier.get();
            for (Entry<String, String> entry : entries) {
              map.put(entry.getKey(), entry.getValue());
            }
            return map;
          }
        })
        .named(name)
        .withFeatures(
            MapFeature.GENERAL_PURPOSE,
            MapFeature.ALLOWS_NULL_ENTRY_QUERIES,
            CollectionFeature.SUPPORTS_ITERATOR_REMOVE,
            CollectionSize.ANY)
        .createTestSuite();
  }
}