[3/3] tinkerpop git commit: Added TinkerGraphPerformanceTest to ensure that the latest changes in hashcode() implementations don't get reverted some day.

[dk...@apache.org]

Added TinkerGraphPerformanceTest to ensure that the latest changes in hashcode() implementations don't get reverted some day.


Project: http://git-wip-us.apache.org/repos/asf/tinkerpop/repo
Commit: http://git-wip-us.apache.org/repos/asf/tinkerpop/commit/ea4fcdff
Tree: http://git-wip-us.apache.org/repos/asf/tinkerpop/tree/ea4fcdff
Diff: http://git-wip-us.apache.org/repos/asf/tinkerpop/diff/ea4fcdff

Branch: refs/heads/TINKERPOP-1759
Commit: ea4fcdfffabdf8dc8c8a5ce11f983161f6287aef
Parents: f8626ce
Author: Daniel Kuppitz <da...@hotmail.com>
Authored: Fri Aug 25 07:13:01 2017 -0700
Committer: Daniel Kuppitz <da...@hotmail.com>
Committed: Mon Aug 28 07:06:33 2017 -0700

----------------------------------------------------------------------
 .../traversal/TinkerGraphPerformanceTest.java   | 53 ++++++++++++++++++++
 1 file changed, 53 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/ea4fcdff/tinkergraph-gremlin/src/test/java/org/apache/tinkerpop/gremlin/tinkergraph/process/traversal/TinkerGraphPerformanceTest.java
----------------------------------------------------------------------
diff --git a/tinkergraph-gremlin/src/test/java/org/apache/tinkerpop/gremlin/tinkergraph/process/traversal/TinkerGraphPerformanceTest.java b/tinkergraph-gremlin/src/test/java/org/apache/tinkerpop/gremlin/tinkergraph/process/traversal/TinkerGraphPerformanceTest.java
new file mode 100644
index 0000000..1e2c905
--- /dev/null
+++ b/tinkergraph-gremlin/src/test/java/org/apache/tinkerpop/gremlin/tinkergraph/process/traversal/TinkerGraphPerformanceTest.java
@@ -0,0 +1,53 @@
+/*
+ * 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.tinkergraph.process.traversal;
+
+import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource;
+import org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerGraph;
+import org.apache.tinkerpop.gremlin.util.TimeUtil;
+import org.junit.Test;
+
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.lessThan;
+import static org.junit.Assert.assertThat;
+
+/**
+ * @author Daniel Kuppitz (http://gremlin.guru)
+ */
+public class TinkerGraphPerformanceTest {
+
+    /**
+     * Check the traverser's hashcode() implementation if this test fails. hashcode() should
+     * not generate too many hash collisions.
+     */
+    @Test
+    public void sacksWithoutMergerShouldBeFast() {
+
+        final TinkerGraph graph = TinkerGraph.open();
+        for (int i = 0; i < 8192; i++) {
+            graph.addVertex().property("x", 0);
+        }
+
+        final GraphTraversalSource g = graph.traversal();
+        final double runtime = TimeUtil.clock(10,
+                () -> g.withSack(0).V().values("x").barrier().iterate());
+
+        assertThat(runtime, is(lessThan(50.0)));
+    }
+}