memoization-jcache/src/test/java/de/xn__ho_hia/memoization/jcache/JCacheBasedBiPredicateMemoizerTest.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 de.xn__ho_hia.memoization.shared.MemoizationDefaults.hashCodeKeyFunction;
  10 import static org.mockito.BDDMockito.given;
  11 import static org.mockito.Matchers.any;
  12
  13 import java.util.function.BiFunction;
  14 import java.util.function.BiPredicate;
  15
  16 import javax.cache.Cache;
  17
  18 import org.junit.Assert;
  19 import org.junit.Rule;
  20 import org.junit.Test;
  21 import org.junit.rules.ExpectedException;
  22 import org.mockito.Mockito;
  23
  24 import de.xn__ho_hia.memoization.shared.MemoizationException;
  25 import de.xn__ho_hia.quality.suppression.CompilerWarnings;
  26
  27 /**
  28  *
  29  */
  30 @SuppressWarnings({ CompilerWarnings.NLS, CompilerWarnings.STATIC_METHOD })
  31 public class JCacheBasedBiPredicateMemoizerTest {
  32
  33     /** Captures expected exceptions. */
  34     @Rule
  35     public ExpectedException thrown = ExpectedException.none();
  36
  37     /**
  38     *
  39     */
  40     @Test
  41     public void shouldMemoizeBiPredicate() {
  42         // given
  43         final BiPredicate<String, String> biPredicate = (first, second) -> true;
  44         final BiFunction<String, String, String> keyfunction = hashCodeKeyFunction();
  45         try (final Cache<String, Boolean> cache = JCacheMemoize.createCache(BiPredicate.class)) {
  46             // when
  47             final JCacheBasedBiPredicateMemoizer<String, String, String> loader = new JCacheBasedBiPredicateMemoizer<>(
  48                     cache, keyfunction, biPredicate);
  49
  50             // then
  51             Assert.assertTrue("Memoized value does not match expectation", loader.test("first", "second"));
  52         }
  53     }
  54
  55     /**
  56     *
  57     */
  58     @Test
  59     @SuppressWarnings(CompilerWarnings.UNCHECKED)
  60     public void shouldWrapRuntimeExceptionInMemoizationException() {
  61         // given
  62         final BiFunction<String, String, String> keyfunction = hashCodeKeyFunction();
  63         try (final Cache<String, Boolean> cache = Mockito.mock(Cache.class)) {
  64             final JCacheBasedBiPredicateMemoizer<String, String, String> loader = new JCacheBasedBiPredicateMemoizer<>(
  65                     cache, keyfunction, null);
  66             given(cache.invoke(any(), any())).willThrow(RuntimeException.class);
  67
  68             // when
  69             thrown.expect(MemoizationException.class);
  70
  71             // then
  72             loader.test("first", "second");
  73         }
  74     }
  75
  76 }