gremlin-test/features/branch/Optional.feature

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Feature: Step - choose()

  Scenario: g_VX2X_optionalXoutXknowsXX
    Given the modern graph
    And using the parameter v2Id defined as "v[vadas].id"
    And the traversal of
      """
      g.V(v2Id).optional(__.out("knows"))
      """
    When iterated to list
    Then the result should be unordered
      | result |
      | v[vadas] |

  Scenario: g_VX2X_optionalXinXknowsXX
    Given the modern graph
    And using the parameter v2Id defined as "v[vadas].id"
    And the traversal of
      """
      g.V(v2Id).optional(__.in("knows"))
      """
    When iterated to list
    Then the result should be unordered
      | result |
      | v[marko] |

  Scenario: g_V_hasLabelXpersonX_optionalXoutXknowsX_optionalXoutXcreatedXXX_path
    Given the modern graph
    And the traversal of
      """
      g.V().hasLabel("person").
        optional(__.out("knows").
                    optional(__.out("created"))).
        path()
      """
    When iterated to list
    Then the result should be unordered
      | result |
      | p[v[marko],v[vadas]] |
      | p[v[marko],v[josh],v[ripple]] |
      | p[v[marko],v[josh],v[lop]] |
      | p[v[vadas]] |
      | p[v[josh]] |
      | p[v[peter]] |
    
  Scenario: g_V_optionalXout_optionalXoutXX_path
    Given the modern graph
    And the traversal of
      """
      g.V().optional(__.out().optional(__.out())).path()
      """
    When iterated to list
    Then the result should be unordered
      | result |
      | p[v[marko],v[lop]] |
      | p[v[marko],v[vadas]] |
      | p[v[marko],v[josh],v[ripple]] |
      | p[v[marko],v[josh],v[lop]] |
      | p[v[vadas]] |
      | p[v[lop]] |
      | p[v[josh],v[ripple]] |
      | p[v[josh],v[lop]] |
      | p[v[ripple]] |
      | p[v[peter],v[lop]] |

  Scenario: g_VX1X_optionalXaddVXdogXX_label
    Given the empty graph
    And the graph initializer of
      """
      g.addV("person").property(T.id, 1).property("name", "marko").property("age", 29).as("marko").
        addV("person").property(T.id, 2).property("name", "vadas").property("age", 27).as("vadas").
        addV("software").property(T.id, 3).property("name", "lop").property("lang", "java").as("lop").
        addV("person").property(T.id, 4).property("name","josh").property("age", 32).as("josh").
        addV("software").property(T.id, 5).property("name", "ripple").property("lang", "java").as("ripple").
        addV("person").property(T.id, 6).property("name", "peter").property("age", 35).as('peter').
        addE("knows").from("marko").to("vadas").property(T.id, 7).property("weight", 0.5).
        addE("knows").from("marko").to("josh").property(T.id, 8).property("weight", 1.0).
        addE("created").from("marko").to("lop").property(T.id, 9).property("weight", 0.4).
        addE("created").from("josh").to("ripple").property(T.id, 10).property("weight", 1.0).
        addE("created").from("josh").to("lop").property(T.id, 11).property("weight", 0.4).
        addE("created").from("peter").to("lop").property(T.id, 12).property("weight", 0.2)
      """
    And using the parameter v1Id defined as "v[marko].id"
    And the traversal of
      """
      g.V(v1Id).optional(__.addV("dog")).label()
      """
    When iterated to list
    Then the result should be unordered
      | result |
      | dog |
    And the graph should return 7 for count of "g.V()"