gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/map/FlatMapTest.java

/*
 * 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
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package org.apache.tinkerpop.gremlin.process.traversal.step.map;

import org.apache.tinkerpop.gremlin.LoadGraphWith;
import org.apache.tinkerpop.gremlin.process.AbstractGremlinProcessTest;
import org.apache.tinkerpop.gremlin.process.GremlinProcessRunner;
import org.apache.tinkerpop.gremlin.process.IgnoreEngine;
import org.apache.tinkerpop.gremlin.process.traversal.Traversal;
import org.apache.tinkerpop.gremlin.process.traversal.TraversalEngine;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.junit.Test;
import org.junit.runner.RunWith;

import java.util.List;

import static org.apache.tinkerpop.gremlin.LoadGraphWith.GraphData.MODERN;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.select;
import static org.junit.Assert.*;

/**
 * @author Stephen Mallette (http://stephen.genoprime.com)
 */
@RunWith(GremlinProcessRunner.class)
public abstract class FlatMapTest extends AbstractGremlinProcessTest {

    public abstract Traversal<Vertex, Vertex> get_g_V_flatMapXselectXaXX();

    /** TINKERPOP-782 */
    @Test
    @LoadGraphWith(MODERN)
    public void g_V_flatMapXselectXaXX() {
        final Traversal<Vertex, Vertex> traversal = get_g_V_flatMapXselectXaXX();
        printTraversalForm(traversal);
        int counter = 0;
        while (traversal.hasNext()) {
            counter++;
            traversal.next();
        }
        assertEquals(6, counter);
    }

    public static class Traversals extends FlatMapTest {
        @Override
        public Traversal<Vertex, Vertex> get_g_V_flatMapXselectXaXX() {
            return g.V().as("a").flatMap(select("a"));
        }
    }
}