Add additional feature tests

gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/Gremlin.cs

@@ -1010,6 +1010,9 @@ private static IDictionary<string, List<Func<GraphTraversalSource, IDictionary<s
                {"g_V_hasLabelXsoftwareX_valueXnameX_substringX1_4X", new List<Func<GraphTraversalSource, IDictionary<string, object>, ITraversal>> {(g,p) =>g.V().HasLabel("software").Values<object>("name").Substring(1,4)}}, 
                {"g_V_hasLabelXsoftwareX_valueXnameX_substringX1_0X", new List<Func<GraphTraversalSource, IDictionary<string, object>, ITraversal>> {(g,p) =>g.V().HasLabel("software").Values<object>("name").Substring(1,0)}}, 
                {"g_V_hasLabelXpersonX_valueXnameX_substringXneg3X", new List<Func<GraphTraversalSource, IDictionary<string, object>, ITraversal>> {(g,p) =>g.V().HasLabel("person").Values<object>("name").Substring(-3)}}, 
+               {"g_V_hasLabelXsoftwareX_valueXnameX_substringX1_neg1X", new List<Func<GraphTraversalSource, IDictionary<string, object>, ITraversal>> {(g,p) =>g.V().HasLabel("software").Values<object>("name").Substring(1,-1)}}, 
+               {"g_V_hasLabelXsoftwareX_valueXnameX_substringXneg4_2X", new List<Func<GraphTraversalSource, IDictionary<string, object>, ITraversal>> {(g,p) =>g.V().HasLabel("software").Values<object>("name").Substring(-4,2)}}, 
+               {"g_V_hasLabelXsoftwareX_valueXnameX_substringXneg3_neg1X", new List<Func<GraphTraversalSource, IDictionary<string, object>, ITraversal>> {(g,p) =>g.V().HasLabel("software").Values<object>("name").Substring(-3,-1)}}, 
                {"g_V_age_sum", new List<Func<GraphTraversalSource, IDictionary<string, object>, ITraversal>> {(g,p) =>g.V().Values<object>("age").Sum<object>()}}, 
                {"g_V_foo_sum", new List<Func<GraphTraversalSource, IDictionary<string, object>, ITraversal>> {(g,p) =>g.V().Values<object>("foo").Sum<object>()}}, 
                {"g_V_age_fold_sumXlocalX", new List<Func<GraphTraversalSource, IDictionary<string, object>, ITraversal>> {(g,p) =>g.V().Values<object>("age").Fold().Sum<object>(Scope.Local)}}, 

gremlin-go/driver/cucumber/gremlin.go

@@ -981,6 +981,9 @@ var translationMap = map[string][]func(g *gremlingo.GraphTraversalSource, p map[
     "g_V_hasLabelXsoftwareX_valueXnameX_substringX1_4X": {func(g *gremlingo.GraphTraversalSource, p map[string]interface{}) *gremlingo.GraphTraversal {return g.V().HasLabel("software").Values("name").Substring(1, 4)}}, 
     "g_V_hasLabelXsoftwareX_valueXnameX_substringX1_0X": {func(g *gremlingo.GraphTraversalSource, p map[string]interface{}) *gremlingo.GraphTraversal {return g.V().HasLabel("software").Values("name").Substring(1, 0)}}, 
     "g_V_hasLabelXpersonX_valueXnameX_substringXneg3X": {func(g *gremlingo.GraphTraversalSource, p map[string]interface{}) *gremlingo.GraphTraversal {return g.V().HasLabel("person").Values("name").Substring(-3)}}, 
+    "g_V_hasLabelXsoftwareX_valueXnameX_substringX1_neg1X": {func(g *gremlingo.GraphTraversalSource, p map[string]interface{}) *gremlingo.GraphTraversal {return g.V().HasLabel("software").Values("name").Substring(1, -1)}}, 
+    "g_V_hasLabelXsoftwareX_valueXnameX_substringXneg4_2X": {func(g *gremlingo.GraphTraversalSource, p map[string]interface{}) *gremlingo.GraphTraversal {return g.V().HasLabel("software").Values("name").Substring(-4, 2)}}, 
+    "g_V_hasLabelXsoftwareX_valueXnameX_substringXneg3_neg1X": {func(g *gremlingo.GraphTraversalSource, p map[string]interface{}) *gremlingo.GraphTraversal {return g.V().HasLabel("software").Values("name").Substring(-3, -1)}}, 
     "g_V_age_sum": {func(g *gremlingo.GraphTraversalSource, p map[string]interface{}) *gremlingo.GraphTraversal {return g.V().Values("age").Sum()}}, 
     "g_V_foo_sum": {func(g *gremlingo.GraphTraversalSource, p map[string]interface{}) *gremlingo.GraphTraversal {return g.V().Values("foo").Sum()}}, 
     "g_V_age_fold_sumXlocalX": {func(g *gremlingo.GraphTraversalSource, p map[string]interface{}) *gremlingo.GraphTraversal {return g.V().Values("age").Fold().Sum(gremlingo.Scope.Local)}}, 

gremlin-python/src/main/python/radish/gremlin.py

@@ -983,6 +983,9 @@
     'g_V_hasLabelXsoftwareX_valueXnameX_substringX1_4X': [(lambda g:g.V().hasLabel('software').name.substring(1,4))], 
     'g_V_hasLabelXsoftwareX_valueXnameX_substringX1_0X': [(lambda g:g.V().hasLabel('software').name.substring(1,0))], 
     'g_V_hasLabelXpersonX_valueXnameX_substringXneg3X': [(lambda g:g.V().hasLabel('person').name.substring(-3))], 
+    'g_V_hasLabelXsoftwareX_valueXnameX_substringX1_neg1X': [(lambda g:g.V().hasLabel('software').name.substring(1,-1))], 
+    'g_V_hasLabelXsoftwareX_valueXnameX_substringXneg4_2X': [(lambda g:g.V().hasLabel('software').name.substring(-4,2))], 
+    'g_V_hasLabelXsoftwareX_valueXnameX_substringXneg3_neg1X': [(lambda g:g.V().hasLabel('software').name.substring(-3,-1))], 
     'g_V_age_sum': [(lambda g:g.V().age.sum_())], 
     'g_V_foo_sum': [(lambda g:g.V().foo.sum_())], 
     'g_V_age_fold_sumXlocalX': [(lambda g:g.V().age.fold().sum_(Scope.local))], 

gremlin-test/src/main/resources/org/apache/tinkerpop/gremlin/test/features/map/Substring.feature

@@ -92,3 +92,39 @@ Feature: Step - substring()
       | osh |
       | das |
       | ter |
+
+Scenario: g_V_hasLabelXsoftwareX_valueXnameX_substringX1_neg1X
+    Given the modern graph
+    And the traversal of
+      """
+      g.V().hasLabel("software").values("name").substring(1, -1)
+      """
+    When iterated to list
+    Then the result should be unordered
+      | result |
+      | o |
+      | ippl |
+
+Scenario: g_V_hasLabelXsoftwareX_valueXnameX_substringXneg4_2X
+    Given the modern graph
+    And the traversal of
+      """
+      g.V().hasLabel("software").values("name").substring(-4, 2)
+      """
+    When iterated to list
+    Then the result should be unordered
+      | result |
+      | lo |
+      | str[] |
+
+Scenario: g_V_hasLabelXsoftwareX_valueXnameX_substringXneg3_neg1X
+    Given the modern graph
+    And the traversal of
+      """
+      g.V().hasLabel("software").values("name").substring(-3, -1)
+      """
+    When iterated to list
+    Then the result should be unordered
+      | result |
+      | lo |
+      | pl |