lang/java/avro/src/test/java/org/apache/avro/util/internal/TestClassValueCache.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
 *
 *     https://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
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 */
package org.apache.avro.util.internal;

import org.junit.Test;

import static org.hamcrest.CoreMatchers.*;
import static org.hamcrest.MatcherAssert.assertThat;

public class TestClassValueCache {

  @Test
  public void testBasic() {
    ClassValueCache<String> cache = new ClassValueCache<>(Class::toString);

    String fromCache = cache.apply(String.class);
    assertThat(fromCache, is("class java.lang.String"));

    assertThat(cache.apply(String.class), sameInstance(fromCache));
  }

}