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   *  to you under the Apache License, Version 2.0 (the
   *  "License"); you may not use this file except in compliance
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   *        http://www.apache.org/licenses/LICENSE-2.0
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  package org.apache.causeway.core.metamodel.facets.object.navparent.annotation;
  
  import java.util.stream.Stream;
  
  import org.junit.jupiter.params.ParameterizedTest;
  import org.junit.jupiter.params.provider.Arguments;
  import org.junit.jupiter.params.provider.MethodSource;
  
  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.jspecify.annotations.Nullable;
  
  import org.apache.causeway.commons.functional.Try;
  import org.apache.causeway.commons.internal._Constants;
  import org.apache.causeway.core.metamodel.facets.FacetFactoryTestAbstract;
  import org.apache.causeway.core.metamodel.facets.object.navparent.NavigableParentFacet;
  import org.apache.causeway.core.metamodel.facets.object.navparent.annotation.NavigableParentTestSamples.DomainObjectInvalidParentAnnot;
  import org.apache.causeway.core.metamodel.facets.object.navparent.annotation.NavigableParentTestSamples.DomainObjectProperAnnot;
  import org.apache.causeway.core.metamodel.facets.object.navparent.method.NavigableParentFacetViaMethod;
  
  class NavigableParentAnnotationFacetFactoryTest
  extends FacetFactoryTestAbstract {
  
      static Stream<Arguments> navigableTypeArgs() {
          return Stream.of(
                  Arguments.of(new DomainObjectProperAnnot(), "root", null),
                  Arguments.of(new DomainObjectInvalidParentAnnot(), "root",
                          "the object's navigable parent must no be void, plural, vetoed or a value-type; "
                          + "yet the parent type 'java.math.BigInteger' as discovered was value-type")); }
  
      @ParameterizedTest
      @MethodSource("navigableTypeArgs")
      protected void navigableType(
              final Object domainObject,
              final String parentMethodName,
              final @Nullable String expectedValidationMessage) throws Exception {
  
          var facetFactory = new NavigableParentAnnotationFacetFactory(getMetaModelContext());
          var parentMethod = findMethodExactOrFail(domainObject.getClass(), parentMethodName);
  
          objectScenario(domainObject.getClass(), (processClassContext, facetHolder) -> {
              //when
              facetFactory.process(processClassContext);
              //then
              if(expectedValidationMessage==null) {
                  var navigableParentFacet = facetHolder.getFacet(NavigableParentFacet.class);
                  assertNotNull(navigableParentFacet, ()->"NavigableParentFacet required");
                  assertTrue(navigableParentFacet instanceof NavigableParentFacetViaMethod);
                  assertEquals(
                          navigableParentFacet.navigableParent(domainObject),
                          Try.call(()->parentMethod.method().invoke(domainObject, _Constants.emptyObjects))
                              .valueAsNullableElseFail());
              } else {
                  assertNull(facetHolder.getFacet(NavigableParentFacet.class));
  
                  var validation = getSpecificationLoader().getOrAssessValidationResult();
                  assertTrue(validation.getMessages().stream()
                          .anyMatch(msg->msg.contains(expectedValidationMessage)));
              }
          });
      }
  
  }
  