content: /*
   * 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
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.datastax.dse.driver.api.core.graph;
  
  import static org.assertj.core.api.Assertions.assertThat;
  
  import org.apache.tinkerpop.gremlin.process.traversal.Path;
  import org.apache.tinkerpop.gremlin.structure.Edge;
  import org.apache.tinkerpop.gremlin.structure.Vertex;
  import org.assertj.core.api.AbstractAssert;
  import org.assertj.core.api.AbstractObjectAssert;
  
  public class TinkerPathAssert extends AbstractAssert<TinkerPathAssert, Path> {
  
    public TinkerPathAssert(Path actual) {
      super(actual, TinkerPathAssert.class);
    }
  
    /**
     * Ensures that the given Path matches one of the exact traversals we'd expect for a person whom
     * Marko knows that has created software and what software that is.
     *
     * <p>These paths should be:
     *
     * <ul>
     *   <li>marko -> knows -> josh -> created -> lop
     *   <li>marko -> knows -> josh -> created -> ripple
     * </ul>
     */
    public static void validatePathObjects(Path path) {
  
      // marko should be the origin point.
      TinkerGraphAssertions.assertThat(path).vertexAt(0).hasLabel("person");
  
      // there should be a 'knows' outgoing relationship between marko and josh.
      TinkerGraphAssertions.assertThat(path)
          .edgeAt(1)
          .hasLabel("knows")
          .hasOutVLabel("person")
          .hasOutV((Vertex) path.objects().get(0))
          .hasInVLabel("person")
          .hasInV((Vertex) path.objects().get(2));
  
      // josh...
      TinkerGraphAssertions.assertThat(path).vertexAt(2).hasLabel("person");
  
      // there should be a 'created' relationship between josh and lop.
      TinkerGraphAssertions.assertThat(path)
          .edgeAt(3)
          .hasLabel("created")
          .hasOutVLabel("person")
          .hasOutV((Vertex) path.objects().get(2))
          .hasInVLabel("software")
          .hasInV((Vertex) path.objects().get(4));
  
      // lop..
      TinkerGraphAssertions.assertThat(path).vertexAt(4).hasLabel("software");
    }
  
    public AbstractObjectAssert<?, Object> objectAt(int i) {
      assertThat(actual.size()).isGreaterThanOrEqualTo(i);
      return assertThat(actual.objects().get(i));
    }
  
    public TinkerVertexAssert vertexAt(int i) {
      assertThat(actual.size()).isGreaterThanOrEqualTo(i);
      Object o = actual.objects().get(i);
      assertThat(o).isInstanceOf(Vertex.class);
      return new TinkerVertexAssert((Vertex) o);
    }
  
    public TinkerEdgeAssert edgeAt(int i) {
      assertThat(actual.size()).isGreaterThanOrEqualTo(i);
      Object o = actual.objects().get(i);
      assertThat(o).isInstanceOf(Edge.class);
      return new TinkerEdgeAssert((Edge) o);
    }
  
    public TinkerPathAssert hasLabel(int i, String... labels) {
      assertThat(actual.labels().size()).isGreaterThanOrEqualTo(i);
      assertThat(actual.labels().get(i)).containsExactly(labels);
      return myself;
    }
  
    public TinkerPathAssert hasNoLabel(int i) {
      assertThat(actual.labels().size()).isGreaterThanOrEqualTo(i);
      assertThat(actual.labels().get(i)).isEmpty();
      return myself;
    }
  
    public TinkerPathAssert doesNotHaveLabel(String label) {
      assertThat(actual.hasLabel(label)).isFalse();
      return myself;
    }
  }
  