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   *  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
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   *
   *        http://www.apache.org/licenses/LICENSE-2.0
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  package org.apache.causeway.core.metamodel.facets.object.recreatable;
  
  import java.util.Optional;
  
  import org.junit.jupiter.api.AfterEach;
  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.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import org.jspecify.annotations.Nullable;
  
  import org.apache.causeway.applib.ViewModel;
  import org.apache.causeway.commons.internal.base._Strings;
  import org.apache.causeway.commons.io.UrlUtils;
  import org.apache.causeway.core.metamodel.facets.FacetFactoryTestAbstract;
  import org.apache.causeway.core.metamodel.facets.object.viewmodel.ViewModelFacet;
  import org.apache.causeway.core.metamodel.facets.object.viewmodel.ViewModelFacetFactory;
  import org.apache.causeway.core.metamodel.facets.object.viewmodel.ViewModelFacetForViewModelInterface;
  
  import lombok.Getter;
  import lombok.Setter;
  
  class RecreatableObjectFacetFactoryTest
  extends FacetFactoryTestAbstract {
  
      private ViewModelFacetFactory facetFactory;
  
      @BeforeEach
      protected void setUp() {
          facetFactory = new ViewModelFacetFactory(getMetaModelContext());
      }
  
      @AfterEach
      protected void tearDown() {
          facetFactory = null;
      }
  
      // public, so org.apache.causeway.core.metamodel.facets.object.viewmodel.ViewModelFacetForViewModelInterface
      // can reflectively access it for the roundtrip below
      public static class Customer implements ViewModel {
  
          public Customer(final String memento) { setName(memento);}
  
          @Getter @Setter
          private String name;
  
          @Override
          public String viewModelMemento() { return name; }
      }
  
      @Test
      void viewModelInterfacePickedUpOnClassAndDefaultsToAlways() {
  
          objectScenario(Customer.class, (processClassContext, facetHolder) -> {
              //when
              facetFactory.process(processClassContext);
              //then
              final ViewModelFacet viewModelFacet = facetHolder.getFacet(ViewModelFacet.class);
              assertNotNull(viewModelFacet);
              assertTrue(viewModelFacet instanceof ViewModelFacetForViewModelInterface);
  
              assertNoMethodsRemoved();
  
              // do a little roundtrip test
              {
                  var customerPojo = new Customer("Hallo World!:/?|");
                  assertFalse(isUrlSafeChunk(customerPojo.viewModelMemento()));
  
                  var customer = facetFactory.getObjectManager().adapt(customerPojo);
                  var customerBookmark = viewModelFacet.serializeToBookmark(customer);
  
                  var customerRecreated = viewModelFacet.instantiate(
                          customer.objSpec(), Optional.of(customerBookmark));
  
                  assertEquals(customerPojo.getName(), ((Customer)(customerRecreated.getPojo())).getName());
              }
  
          });
      }
  
      private static boolean isUrlSafeChunk(final @Nullable String urlChunck) {
          if(_Strings.isEmpty(urlChunck)) return true;
          return UrlUtils.urlEncodeUtf8(urlChunck).equals(urlChunck);
      }
  
  }
  