src/test/java/wtf/metio/reguloj/FirstWinsRuleEngineTest.java

   1 /*
   2  * SPDX-FileCopyrightText: The reguloj Authors
   3  * SPDX-License-Identifier: 0BSD
   4  */
   5 package wtf.metio.reguloj;
   6
   7 import org.junit.jupiter.api.DisplayName;
   8 import org.junit.jupiter.api.Test;
   9
  10 import java.util.List;
  11
  12 import static org.mockito.BDDMockito.given;
  13 import static org.mockito.Mockito.*;
  14
  15 final class FirstWinsRuleEngineTest extends RuleEngineTCK {
  16
  17     @Override
  18     protected RuleEngine<Context<Object>> createRuleEngine() {
  19         return new FirstWinsRuleEngine<>();
  20     }
  21
  22     @Test
  23     @DisplayName("run only first matching rule")
  24     void shouldOnlyRunFirstMatchingRule() {
  25         given(rule.fires(context)).willReturn(Boolean.TRUE);
  26         given(rule2.fires(context)).willReturn(Boolean.FALSE);
  27
  28         engine.infer(List.of(rule, rule2), context);
  29
  30         verify(rule, times(1)).fires(context);
  31         verify(rule, times(1)).run(context);
  32         verifyNoMoreInteractions(rule2);
  33     }
  34
  35     @Test
  36     @DisplayName("skip rules that are not firing")
  37     void shouldOnlyRunFirstMatchingRuleSecond() {
  38         given(rule.fires(context)).willReturn(Boolean.FALSE);
  39         given(rule2.fires(context)).willReturn(Boolean.TRUE);
  40
  41         engine.infer(List.of(rule, rule2), context);
  42
  43         verify(rule, times(1)).fires(context);
  44         verify(rule, times(0)).run(context);
  45         verify(rule2, times(1)).fires(context);
  46         verify(rule2, times(1)).run(context);
  47     }
  48
  49 }