| /* |
| * 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 org.apache.tinkerpop.gremlin.process.traversal.strategy.optimization; |
| |
| import org.apache.tinkerpop.gremlin.process.traversal.Traversal; |
| import org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategies; |
| import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__; |
| import org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversalStrategies; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| import java.util.Arrays; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| /** |
| * @author Marko A. Rodriguez (http://markorodriguez.com) |
| */ |
| @RunWith(Parameterized.class) |
| public class IdentityRemovalStrategyTest { |
| |
| @Parameterized.Parameter(value = 0) |
| public Traversal original; |
| |
| @Parameterized.Parameter(value = 1) |
| public Traversal optimized; |
| |
| |
| private void applyIdentityRemovalStrategy(final Traversal traversal) { |
| final TraversalStrategies strategies = new DefaultTraversalStrategies(); |
| strategies.addStrategies(IdentityRemovalStrategy.instance()); |
| traversal.asAdmin().setStrategies(strategies); |
| traversal.asAdmin().applyStrategies(); |
| |
| } |
| |
| @Test |
| public void doTest() { |
| applyIdentityRemovalStrategy(original); |
| assertEquals(optimized, original); |
| } |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static Iterable<Object[]> generateTestParameters() { |
| |
| return Arrays.asList(new Traversal[][]{ |
| {__.identity(), __.identity()}, |
| {__.identity().out(), __.out()}, |
| {__.identity().out().identity(), __.out()}, |
| {__.identity().as("a").out().identity(), __.identity().as("a").out()}, |
| {__.identity().as("a").out().identity().as("b"), __.identity().as("a").out().as("b")}, |
| {__.identity().as("a").out().in().identity().identity().as("b").identity().out(), __.identity().as("a").out().in().as("b").out()}, |
| {__.out().identity().as("a").out().in().identity().identity().as("b").identity().out(), __.out().as("a").out().in().as("b").out()}, |
| }); |
| } |
| } |