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   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * 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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
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   * See the License for the specific language governing permissions and
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  package org.apache.atlas.repository.impexp;
  
  import org.apache.atlas.exception.AtlasBaseException;
  import org.apache.atlas.model.impexp.AtlasImportResult;
  import org.apache.atlas.model.typedef.AtlasBaseTypeDef;
  import org.apache.atlas.model.typedef.AtlasEntityDef;
  import org.apache.atlas.model.typedef.AtlasEnumDef;
  import org.apache.atlas.model.typedef.AtlasStructDef;
  import org.apache.atlas.model.typedef.AtlasTypesDef;
  import org.apache.atlas.repository.store.bootstrap.AtlasTypeDefStoreInitializer;
  import org.apache.atlas.store.AtlasTypeDefStore;
  import org.apache.atlas.type.AtlasTypeRegistry;
  import org.apache.atlas.utils.TestResourceFileUtils;
  import org.mockito.Mock;
  import org.mockito.MockitoAnnotations;
  import org.testng.annotations.BeforeClass;
  import org.testng.annotations.Test;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  
  import static org.testng.Assert.assertEquals;
  import static org.testng.Assert.assertNotNull;
  import static org.testng.Assert.assertTrue;
  
  public class TypeAttributeDifferenceTest {
      @Mock
      AtlasTypeDefStore typeDefStore;
  
      @Mock
      AtlasTypeRegistry typeRegistry;
  
      private TypeAttributeDifference typeAttributeDifference;
  
      @BeforeClass
      public void setup() {
          MockitoAnnotations.initMocks(this);
  
          typeAttributeDifference = new TypeAttributeDifference(typeDefStore, typeRegistry);
      }
  
      @Test
      public void entityDefWithNoAttributes() throws Exception {
          AtlasEntityDef                         existing           = new AtlasEntityDef();
          AtlasEntityDef                         incoming           = new AtlasEntityDef();
          List<AtlasStructDef.AtlasAttributeDef> expectedAttributes = new ArrayList<>();
          List<AtlasStructDef.AtlasAttributeDef> actualAttributes   = invokeGetAttributesAbsentInExisting(existing, incoming);
  
          assertEquals(actualAttributes, expectedAttributes);
      }
  
      @Test
      public void bothSame_DifferenceIsEmptyList() throws Exception {
          AtlasEntityDef existing = getAtlasEntityDefWithAttributes("name", "qualifiedName");
          AtlasEntityDef incoming = getAtlasEntityDefWithAttributes("name", "qualifiedName");
  
          List<AtlasStructDef.AtlasAttributeDef> expectedAttributes = getAtlasAttributeDefs();
          List<AtlasStructDef.AtlasAttributeDef> actualAttributes   = invokeGetAttributesAbsentInExisting(existing, incoming);
  
          assertEquals(actualAttributes, expectedAttributes);
      }
  
      @Test
      public void different_ReturnsDifference() throws Exception {
          AtlasEntityDef                         existing           = getAtlasEntityDefWithAttributes("name");
          AtlasEntityDef                         incoming           = getAtlasEntityDefWithAttributes("name", "qualifiedName");
          List<AtlasStructDef.AtlasAttributeDef> expectedAttributes = getAtlasAttributeDefs("qualifiedName");
  
          List<AtlasStructDef.AtlasAttributeDef> actualAttributes = invokeGetAttributesAbsentInExisting(existing, incoming);
          assertEquals(actualAttributes, expectedAttributes);
      }
  
      @Test
      public void differentSubset_ReturnsDifference() throws Exception {
          AtlasEntityDef                         existing         = getAtlasEntityDefWithAttributes("name", "qualifiedName");
          AtlasEntityDef                         incoming         = getAtlasEntityDefWithAttributes("name");
          List<AtlasStructDef.AtlasAttributeDef> actualAttributes = invokeGetAttributesAbsentInExisting(existing, incoming);
  
          List<AtlasStructDef.AtlasAttributeDef> expectedAttributes = getAtlasAttributeDefs();
          assertEquals(actualAttributes, expectedAttributes);
      }
  
      @Test
      public void differentEnumDef_ReturnsDifference() throws Exception {
          AtlasEnumDef                           existing         = getAtlasEnumWithAttributes("Alpha", "Bravo");
          AtlasEnumDef                           incoming         = getAtlasEnumWithAttributes("Alpha", "Bravo", "Delta", "Echo");
          List<AtlasEnumDef.AtlasEnumElementDef> actualAttributes = invokeGetAttributesAbsentInExisting(existing, incoming);
  
          List<AtlasEnumDef.AtlasEnumElementDef> expectedAttributes = getEnumElementDefs(2, "Delta", "Echo");
          assertEquals(actualAttributes, expectedAttributes);
      }
  
      @Test
      public void differentEnumDefs_ReturnsDifference() throws Exception {
          AtlasEnumDef existing = getAtlasEnumWithAttributes("Alpha", "Bravo");
          AtlasEnumDef incoming = getAtlasEnumWithAttributes("Alpha", "Bravo", "Delta", "Echo");
          boolean      ret      = invokeUpdate(existing, incoming);
  
          List<AtlasEnumDef.AtlasEnumElementDef> expectedAttributes = getEnumElementDefs(0, "Alpha", "Bravo", "Delta", "Echo");
  
          assertTrue(ret, "Update took place");
          assertEquals(existing.getElementDefs(), expectedAttributes);
      }
  
      @Test
      public void t1() throws IOException, AtlasBaseException {
          AtlasTypesDef typesDef = TestResourceFileUtils.readObjectFromJson(".", "typesDef-bm", AtlasTypesDef.class);
  
          AtlasImportResult result        = new AtlasImportResult();
          AtlasTypesDef     typesToCreate = AtlasTypeDefStoreInitializer.getTypesToCreate(typesDef, this.typeRegistry);
  
          typeDefStore.createTypesDef(typesToCreate);
          typeAttributeDifference.updateTypes(typesDef, result);
  
          assertNotNull(typesDef);
      }
  
      private List<AtlasEnumDef.AtlasEnumElementDef> getEnumElementDefs(int startIndex, String... names) {
          int                                    i    = startIndex;
          List<AtlasEnumDef.AtlasEnumElementDef> list = new ArrayList<>();
  
          for (String s : names) {
              list.add(new AtlasEnumDef.AtlasEnumElementDef(s, s, i++));
          }
  
          return list;
      }
  
      private List<AtlasStructDef.AtlasAttributeDef> getAtlasAttributeDefs(String... names) {
          List<AtlasStructDef.AtlasAttributeDef> list = new ArrayList<>();
  
          for (String s : names) {
              list.add(new AtlasStructDef.AtlasAttributeDef(s, AtlasBaseTypeDef.ATLAS_TYPE_STRING));
          }
  
          return list;
      }
  
      private AtlasEntityDef getAtlasEntityDefWithAttributes(String... attributeNames) {
          AtlasEntityDef e = new AtlasEntityDef();
  
          for (AtlasStructDef.AtlasAttributeDef a : getAtlasAttributeDefs(attributeNames)) {
              e.addAttribute(a);
          }
  
          return e;
      }
  
      private List<AtlasStructDef.AtlasAttributeDef> invokeGetAttributesAbsentInExisting(AtlasStructDef existing, AtlasStructDef incoming) throws Exception {
          return typeAttributeDifference.getElementsAbsentInExisting(existing, incoming);
      }
  
      private List<AtlasEnumDef.AtlasEnumElementDef> invokeGetAttributesAbsentInExisting(AtlasEnumDef existing, AtlasEnumDef incoming) throws Exception {
          return typeAttributeDifference.getElementsAbsentInExisting(existing, incoming);
      }
  
      private AtlasEnumDef getAtlasEnumWithAttributes(String... elements) {
          AtlasEnumDef enumDef = new AtlasEnumDef();
  
          for (AtlasEnumDef.AtlasEnumElementDef ed : getEnumElementDefs(0, elements)) {
              enumDef.addElement(ed);
          }
  
          return enumDef;
      }
  
      private boolean invokeUpdate(AtlasEnumDef existing, AtlasEnumDef incoming) throws Exception {
          return typeAttributeDifference.addElements(existing, incoming);
      }
  }
  