     #   {4, ["Christopher", "Jennifer"]},
     #   {6, ["Kareem"]}
     # ]
-    # 
+    #
     # assert expected == actual
   end
+
 end

    # assert [] == School.grade(db, 1)
  end

  test "sort school" do
    # actual = db
    #   |> School.add("Christopher", 4)
    #   |> School.add("Jennifer", 4)
    #   |> School.add("Kareem", 6)
    #   |> School.add("Kyle", 3)
    #   |> School.sort

    # assert actual == HashDict.new [{3, ["Chelsea"]}, {7, ["Logan"]}]
  end

  test "get students in a grade sorted alphabetically" do
    # actual = db
    #   |> School.add("Bradley", 5)
    #   |> School.add("Franklin", 5)
    #   |> School.add("Jeff", 1)
    #   |> School.grade(5)
    #
