DefaultTraverserGeneratorFactoryTest.java example

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package org.apache.tinkerpop.gremlin.process.traversal.traverser.util;

import org.apache.tinkerpop.gremlin.process.traversal.Traversal;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__;
import org.apache.tinkerpop.gremlin.process.traversal.traverser.B_LP_O_P_S_SE_SL_Traverser;
import org.apache.tinkerpop.gremlin.process.traversal.traverser.B_LP_O_S_SE_SL_Traverser;
import org.apache.tinkerpop.gremlin.process.traversal.traverser.B_O_S_SE_SL_Traverser;
import org.apache.tinkerpop.gremlin.process.traversal.traverser.B_O_Traverser;
import org.apache.tinkerpop.gremlin.process.traversal.traverser.LP_O_OB_P_S_SE_SL_Traverser;
import org.apache.tinkerpop.gremlin.process.traversal.traverser.LP_O_OB_S_SE_SL_Traverser;
import org.apache.tinkerpop.gremlin.process.traversal.traverser.O_OB_S_SE_SL_Traverser;
import org.apache.tinkerpop.gremlin.structure.util.empty.EmptyGraph;
import org.junit.Test;

import static org.junit.Assert.assertEquals;

/**
 * @author Marko A. Rodriguez (http://markorodriguez.com)
 */
public class DefaultTraverserGeneratorFactoryTest {

    @Test
    public void shouldProduceExpectedTraverser() {
        final GraphTraversalSource traversalSource = EmptyGraph.instance().traversal();
        final Object start = new Object();

        Traversal.Admin traversal = traversalSource.V().out().asAdmin();
        traversal.applyStrategies();
        assertEquals(B_O_Traverser.class, traversal.getTraverserGenerator().generate(start, traversal.getStartStep(), 1l).getClass());
        //
        traversal = traversalSource.V().out().barrier().asAdmin();
        traversal.applyStrategies();
        assertEquals(B_O_Traverser.class, traversal.getTraverserGenerator().generate(start, traversal.getStartStep(), 1l).getClass());
        //
        traversal = traversalSource.V().repeat(__.out()).times(10).asAdmin();
        traversal.applyStrategies();
        assertEquals(B_O_S_SE_SL_Traverser.class, traversal.getTraverserGenerator().generate(start, traversal.getStartStep(), 1l).getClass());
        //
        traversal = traversalSource.V().out().sack().asAdmin();
        traversal.applyStrategies();
        assertEquals(B_O_S_SE_SL_Traverser.class, traversal.getTraverserGenerator().generate(start, traversal.getStartStep(), 1l).getClass());
        //
        traversal = traversalSource.V().out().sack().as("a").select("a").asAdmin();
        traversal.applyStrategies();
        assertEquals(B_LP_O_S_SE_SL_Traverser.class, traversal.getTraverserGenerator().generate(start, traversal.getStartStep(), 1l).getClass());
        //
        traversal = traversalSource.V().out().path().asAdmin();
        traversal.applyStrategies();
        assertEquals(B_LP_O_P_S_SE_SL_Traverser.class, traversal.getTraverserGenerator().generate(start, traversal.getStartStep(), 1l).getClass());
        //
        traversal = traversalSource.withBulk(false).V().out().asAdmin();
        traversal.applyStrategies();
        assertEquals(O_OB_S_SE_SL_Traverser.class, traversal.getTraverserGenerator().generate(start, traversal.getStartStep(), 1l).getClass());
        //
        traversal = traversalSource.withBulk(false).V().as("a").out().select("a").asAdmin();
        traversal.applyStrategies();
        assertEquals(LP_O_OB_S_SE_SL_Traverser.class, traversal.getTraverserGenerator().generate(start, traversal.getStartStep(), 1l).getClass());
        //
        traversal = traversalSource.withBulk(false).V().out().path().asAdmin();
        traversal.applyStrategies();
        assertEquals(LP_O_OB_P_S_SE_SL_Traverser.class, traversal.getTraverserGenerator().generate(start, traversal.getStartStep(), 1l).getClass());

    }
}