added traversal test (#4376)

js/server/tests/aql/aql-graph-traverser.js

@@ -71,6 +71,56 @@ var createBaseGraph = function () {
   edge.FE = ec.save(vertex.F, vertex.E, {})._id;
 };
 
+function simpleInboundOutboundSuite () {
+  const gn = 'UnitTestGraph';
+
+  return {
+
+    setUp: function () {
+      db._drop(gn + 'v1');
+      db._drop(gn + 'v2');
+      db._drop(gn + 'e');
+
+      let c;
+      c = db._create(gn + 'v1', { numberOfShards: 9 });
+      c.insert({ _key: "test" });
+
+      c = db._create(gn + 'v2', { numberOfShards: 7 });
+      c.insert({ _key: "test" });
+     
+      c = db._createEdgeCollection(gn + 'e', { numberOfShards: 5 });
+      c.insert({ _from: gn + "v2/test", _to: gn + "v1/test" }); 
+    },
+
+    tearDown: function () {
+      db._drop(gn + 'v1');
+      db._drop(gn + 'v2');
+      db._drop(gn + 'e');
+    },
+
+    testTheOldInAndOutOut: function () {
+      // outbound
+      let q = `WITH ${gn + 'v1'} ${gn + 'v2' } FOR v, e IN OUTBOUND DOCUMENT("${gn + 'v2'}/test") ${gn + 'e'} RETURN {v, e}`;
+      let res = AQL_EXECUTE(q).json[0];
+
+      assertEqual(gn + "v1/test", res.v._id);
+      assertEqual("test", res.v._key);
+      assertEqual(gn + "v2/test", res.e._from);
+      assertEqual(gn + "v1/test", res.e._to);
+
+      // same test, but now reverse
+      q = `WITH ${gn + 'v1'} ${gn + 'v2' } FOR v, e IN INBOUND DOCUMENT("${gn + 'v1'}/test") ${gn + 'e'} RETURN {v, e}`;
+      res = AQL_EXECUTE(q).json[0];
+
+      assertEqual(gn + "v2/test", res.v._id);
+      assertEqual("test", res.v._key);
+      assertEqual(gn + "v2/test", res.e._from);
+      assertEqual(gn + "v1/test", res.e._to);
+    }
+
+  };
+}
+
 function limitSuite () {
   const gn = 'UnitTestGraph';
 
@@ -3825,6 +3875,7 @@ function exampleGraphsSuite () {
   };
 }
 
+jsunity.run(simpleInboundOutboundSuite);
 jsunity.run(limitSuite);
 jsunity.run(nestedSuite);
 jsunity.run(namedGraphSuite);