memoization-jcache/src/test/java/de/xn__ho_hia/memoization/jcache/JCacheBasedIntConsumerMemoizerTest.java

   1 /*
   2  * This file is part of memoization.java. It is subject to the license terms in the LICENSE file found in the top-level
   3  * directory of this distribution and at http://creativecommons.org/publicdomain/zero/1.0/. No part of memoization.java,
   4  * including this file, may be copied, modified, propagated, or distributed except according to the terms contained
   5  * in the LICENSE file.
   6  */
   7 package de.xn__ho_hia.memoization.jcache;
   8
   9 import static org.mockito.BDDMockito.given;
  10 import static org.mockito.Matchers.any;
  11
  12 import java.util.function.IntConsumer;
  13 import java.util.function.IntFunction;
  14
  15 import javax.cache.Cache;
  16
  17 import org.junit.Rule;
  18 import org.junit.Test;
  19 import org.junit.rules.ExpectedException;
  20 import org.mockito.Mockito;
  21
  22 import de.xn__ho_hia.memoization.shared.MemoizationException;
  23 import de.xn__ho_hia.quality.suppression.CompilerWarnings;
  24
  25 /**
  26  *
  27  */
  28 @SuppressWarnings({ CompilerWarnings.NLS, CompilerWarnings.STATIC_METHOD, CompilerWarnings.UNCHECKED })
  29 public class JCacheBasedIntConsumerMemoizerTest {
  30
  31     /** Captures expected exceptions. */
  32     @Rule
  33     public ExpectedException thrown = ExpectedException.none();
  34
  35     /**
  36     *
  37     */
  38     @Test
  39     public void shouldMemoizeConsumer() {
  40         // given
  41         final IntConsumer consumer = Mockito.mock(IntConsumer.class);
  42         final IntFunction<String> keyFunction = a -> "key";
  43         try (final Cache<String, Integer> cache = JCacheMemoize.createCache(IntConsumer.class)) {
  44             // when
  45             final JCacheBasedIntConsumerMemoizer<String> loader = new JCacheBasedIntConsumerMemoizer<>(cache,
  46                     keyFunction, consumer);
  47
  48             // then
  49             loader.accept(123);
  50             Mockito.verify(consumer).accept(123);
  51         }
  52     }
  53
  54     /**
  55     *
  56     */
  57     @Test
  58     public void shouldMemoizeConsumerOnce() {
  59         // given
  60         final IntConsumer consumer = Mockito.mock(IntConsumer.class);
  61         final IntFunction<String> keyFunction = a -> "key";
  62         try (final Cache<String, Integer> cache = JCacheMemoize.createCache(IntConsumer.class)) {
  63             // when
  64             final JCacheBasedIntConsumerMemoizer<String> loader = new JCacheBasedIntConsumerMemoizer<>(cache,
  65                     keyFunction, consumer);
  66
  67             // then
  68             loader.accept(123);
  69             loader.accept(123);
  70             Mockito.verify(consumer).accept(123);
  71         }
  72     }
  73
  74     /**
  75     *
  76     */
  77     @Test
  78     public void shouldWrapRuntimeExceptionInMemoizationException() {
  79         // given
  80         final IntFunction<String> keyFunction = a -> "key";
  81         try (final Cache<String, Integer> cache = Mockito.mock(Cache.class)) {
  82             final JCacheBasedIntConsumerMemoizer<String> loader = new JCacheBasedIntConsumerMemoizer<>(cache,
  83                     keyFunction, null);
  84             given(cache.invoke(any(), any())).willThrow(RuntimeException.class);
  85
  86             // when
  87             thrown.expect(MemoizationException.class);
  88
  89             // then
  90             loader.accept(123);
  91         }
  92     }
  93
  94 }