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Feature: Step - coalesce()

  Scenario: g_V_coalesceXoutXfooX_outXbarXX
    Given the modern graph
    And the traversal of
      """
      g.V().coalesce(__.out("foo"), __.out("bar"))
      """
    When iterated to list
    Then the result should be empty

  Scenario: g_VX1X_coalesceXoutXknowsX_outXcreatedXX_valuesXnameX
    Given the modern graph
    And using the parameter v1Id defined as "v[marko].id"
    And the traversal of
      """
      g.V(v1Id).coalesce(__.out("knows"), __.out("created")).values("name")
      """
    When iterated to list
    Then the result should be unordered
      | result |
      | vadas |
      | josh |

  Scenario: g_VX1X_coalesceXoutXcreatedX_outXknowsXX_valuesXnameX
    Given the modern graph
    And using the parameter v1Id defined as "v[marko].id"
    And the traversal of
      """
      g.V(v1Id).coalesce(__.out("created"), __.out("knows")).values("name")
      """
    When iterated to list
    Then the result should be unordered
      | result |
      | lop |

  Scenario: g_V_coalesceXoutXlikesX_outXknowsX_inXcreatedXX_groupCount_byXnameX
    Given the modern graph
    And the traversal of
      """
      g.V().coalesce(__.out("likes"), __.out("knows"), __.out("created")).groupCount().by("name")
      """
    When iterated to list
    Then the result should be unordered
      | result |
      | m[{"ripple":"d[1].l", "vadas":"d[1].l", "josh":"d[1].l", "lop":"d[2].l"}] |

  Scenario: g_V_coalesceXoutEXknowsX_outEXcreatedXX_otherV_path_byXnameX_byXlabelX
    Given the modern graph
    And the traversal of
      """
      g.V().coalesce(__.outE("knows"), __.outE("created")).otherV().path().by("name").by(T.label)
      """
    When iterated to list
    Then the result should be unordered
      | result |
      | p[marko,knows,vadas] |
      | p[marko,knows,josh] |
      | p[josh,created,ripple] |
      | p[josh,created,lop] |
      | p[peter,created,lop] |

  Scenario: g_V_outXcreatedX_order_byXnameX_coalesceXname_constantXxXX
    Given the modern graph
    And the traversal of
      """
      g.V().out("created").order().by("name").coalesce(__.values("name"), __.constant("x"))
      """
    When iterated to list
    Then the result should be ordered
      | result |
      | lop |
      | lop |
      | lop |
      | ripple |