Port over more steps from filter package of TP3

gremlin-scala/src/test/scala/gremlin/scala/FilterSpec.scala

@@ -66,6 +66,58 @@ class FilterSpec extends WordSpec with Matchers {
                                                            "ripple")
   }
 
+  "coin all" in new Fixture {
+    graph.V.coin(1.0d).value(Name).toSet shouldBe Set("lop",
+                                                      "marko",
+                                                      "josh",
+                                                      "vadas",
+                                                      "ripple",
+                                                      "peter")
+  }
+
+  "coin nothing" in new Fixture {
+    graph.V.coin(0.0d).value(Name).toSet shouldBe Set()
+  }
+
+  "dedup success" in new Fixture {
+    val a = StepLabel[Edge]()
+    val b = StepLabel[Vertex]()
+
+    graph.V.outE.as(a).inV.as(b)
+      .select(a).select(b).order(By(Name))
+      .value(Name)
+      .dedup()
+      .toList shouldBe List("josh", "lop", "ripple", "vadas")
+  }
+
+  "drop success" in new Fixture {
+    graph.V.outE.drop().toSet shouldBe Set()
+  }
+
+
+  "is usage" in new Fixture {
+    graph.V.value(Age).is(P.lte(30)).toSet shouldBe Set(27, 29)
+  }
+
+  "range success" in new Fixture {
+    val markoVertexId = 1
+    graph.V(markoVertexId).out("knows").out("created").range(0, 1).value(Name).toSet should contain oneOf("lop", "ripple")
+  }
+
+  "simple path" in new Fixture {
+    val markoVertexId = 1
+    graph.V(markoVertexId).out("created").in("created").simplePath.value(Name).toSet shouldBe Set("josh", "peter")
+  }
+
+  "tail" in new Fixture {
+    graph.V.value(Name).order.tail(2).toSet shouldBe Set("ripple", "vadas")
+  }
+
+  "where" in new Fixture {
+    val a = StepLabel[Vertex]()
+    graph.V.as(a).out("created").where(_.as(a).value(Name).is("josh")).in("created").value(Name).toSet shouldBe Set("marko", "josh", "peter")
+  }
+
   trait Fixture {
     val graph = TinkerFactory.createClassic.asScala
   }