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   *  Licensed to the Apache Software Foundation (ASF) under one
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   *  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
   *
   *        http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing,
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   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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  package org.apache.causeway.core.metamodel.facets.param.parameter;
  
  import jakarta.validation.constraints.Pattern;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import org.apache.causeway.core.metamodel.facetapi.Facet;
  import org.apache.causeway.core.metamodel.facets.FacetFactoryTestAbstract;
  import org.apache.causeway.core.metamodel.facets.objectvalue.regex.RegExFacet;
  import org.apache.causeway.core.metamodel.facets.param.parameter.regex.RegExFacetForPatternAnnotationOnParameter;
  
  class RegExAnnotationOnParameterFacetFactoryTest
  extends FacetFactoryTestAbstract {
  
      private ParameterAnnotationFacetFactory facetFactory;
  
      @BeforeEach
      protected void setUp() {
          facetFactory = new ParameterAnnotationFacetFactory(getMetaModelContext());
      }
  
      @Test
      void regExAnnotationPickedUpOnActionParameter() {
          @SuppressWarnings("unused")
          class Customer {
              public void someAction(
                      @Pattern(regexp = "^A.*", flags = { Pattern.Flag.CASE_INSENSITIVE })
                      final String foo) {}
          }
          parameterScenario(Customer.class, "someAction", 0, (processParameterContext, facetHolder, facetedMethod, facetedMethodParameter) -> {
              //when
              facetFactory.processParams(processParameterContext);
              //then
              final Facet facet = facetedMethodParameter.getFacet(RegExFacet.class);
              assertNotNull(facet);
              assertTrue(facet instanceof RegExFacetForPatternAnnotationOnParameter);
              final RegExFacetForPatternAnnotationOnParameter regExFacet = (RegExFacetForPatternAnnotationOnParameter) facet;
              assertEquals("^A.*", regExFacet.regexp());
              assertEquals(2, regExFacet.patternFlags());
          });
      }
  
      @Test
      void regExAnnotationIgnoredForPrimitiveOnActionParameter() {
          @SuppressWarnings("unused")
          class Customer {
              public void someAction(final int foo) {}
          }
          parameterScenario(Customer.class, "someAction", 0, (processParameterContext, facetHolder, facetedMethod, facetedMethodParameter) -> {
              //when
              facetFactory.processParams(processParameterContext);
              //then
              assertNull(facetedMethod.getFacet(RegExFacet.class));
          });
      }
  
  }
  