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Use TDD to create a Player class that responds to the following interaction pattern:
pry(main)> require './lib/player'
#=> true
pry(main)> pogba = Player.new("Paul Pogba", :midfielder)
#=> #<Player:0x00007fbcc131d2d0...>
pry(main)> pogba.name
#=> "Paul Pogba"
pry(main)> pogba.position
#=> :midfielderUse TDD to create a Team class that responds to the following interaction pattern:
pry(main)> require './lib/team'
#=> true
pry(main)> require './lib/player'
#=> true
pry(main)> france = Team.new("France")
#=> #<Team:0x00007feab6adeca8...>
pry(main)> france.country
#=> "France"
pry(main)> france.players
#=> []
pry(main)> france.eliminated?
#=> false
pry(main)> france.eliminated = true
#=> true
pry(main)> france.eliminated?
#=> true
pry(main)> mbappe = Player.new("Kylian Mbappe", :forward)
#=> #<Player:0x00007feab803f688...>
pry(main)> griezmann = Player.new("Antoine Griezmann", :forward)
#=> #<Player:0x00007feab7877a18...>
pry(main)> pogba = Player.new("Paul Pogba", :midfielder)
#=> #<Player:0x00007feab71546f0...>
pry(main)> france.add_player(mbappe)
#=> [#<Player:0x00007feab803f688...>]
pry(main)> france.add_player(griezmann)
#=> [#<Player:0x00007feab803f688...>, #<Player:0x00007feab7877a18...>]
pry(main)> france.add_player(pogba)
#=> [#<Player:0x00007feab803f688...>, #<Player:0x00007feab7877a18...>, #<Player:0x00007feab71546f0...>]
pry(main)> france.players
#=> [#<Player:0x00007feab803f688...>, #<Player:0x00007feab7877a18...>, #<Player:0x00007feab71546f0...>]
pry(main)> france.players_by_position(:midfielder)
#=> [#<Player:0x00007feab71546f0...>]
pry(main)> france.players_by_position(:forward)
#=> [#<Player:0x00007feab803f688...>, #<Player:0x00007feab7877a18...>]Use TDD to create a WorldCup class that responds to the following interaction pattern. For the active_players_by_position method, an active player is a player that is on a team that is not eliminated.
pry(main)> require './lib/world_cup'
#=> true
pry(main)> require './lib/team'
#=> true
pry(main)> require './lib/player'
#=> true
pry(main)> france = Team.new("France")
#=> #<Team:0x00007feab6adeca8...>
pry(main)> mbappe = Player.new("Kylian Mbappe", :forward)
#=> #<Player:0x00007feab803f688...>
pry(main)> griezmann = Player.new("Antoine Griezmann", :forward)
#=> #<Player:0x00007feab7877a18...>
pry(main)> pogba = Player.new("Paul Pogba", :midfielder)
#=> #<Player:0x00007feab71546f0...>
pry(main)> france.add_player(mbappe)
#=> [#<Player:0x00007feab803f688...>]
pry(main)> france.add_player(griezmann)
#=> [#<Player:0x00007feab803f688...>, #<Player:0x00007feab7877a18...>]
pry(main)> france.add_player(pogba)
#=> [#<Player:0x00007feab803f688...>, #<Player:0x00007feab7877a18...>, #<Player:0x00007feab71546f0...>]
pry(main)> croatia = Team.new("Croatia")
#=> #<Team:0x00007fce3c0b83c8...>
pry(main)> modric = Player.new("Luka Modric", :midfielder)
#=> #<Player:0x00007fce3b996450...>
pry(main)> perisic = Player.new("Ivan Perisic", :forward)
#=> #<Player:0x00007fce3d0891f8...>
pry(main)> vida = Player.new("Domagoj Vida", :defender)
#=> #<Player:0x00007fce3bb69b10...>
pry(main)> croatia.add_player(modric)
#=> [#<Player:0x00007fce3b996450...>]
pry(main)> croatia.add_player(perisic)
#=> [#<Player:0x00007fce3b996450...>, #<Player:0x00007fce3d0891f8...>]
pry(main)> croatia.add_player(vida)
#=> [#<Player:0x00007fce3b996450...>, #<Player:0x00007fce3d0891f8...>, #<Player:0x00007fce3bb69b10...>]
pry(main)> world_cup = WorldCup.new(2018, [france, croatia])
#=> #<WorldCup:0x00007fce3b908858...>
pry(main)> world_cup.year
#=> 2018
pry(main)> world_cup.teams
#=> [#<Team:0x00007fce3c091f70...>, #<Team:0x00007fce3c0b83c8...>
pry(main)> world_cup.active_players_by_position(:forward)
#=> [#<Player:0x00007feab803f688...>, #<Player:0x00007feab7877a18...>, #<Player:0x00007fce3d0891f8...>]
pry(main)> croatia.eliminated = true
#=> true
pry(main)> world_cup.active_players_by_position(:forward)
#=> [#<Player:0x00007feab803f688...>, #<Player:0x00007feab7877a18...>]Add an all_players method to your WorldCup class. This method should return a string with all players listed by position. Each position should be listed alphabetically, capitalized and pluralized. For instance, if a player has the position :forward, your output should list Forwards. Under each position, you should list the names of each player for that position in alphabetical order. You are not allowed to assume that you will only have :defender, :midfielder, and :forward positions. For instance, your all_players method should handle a player with the position :goalkeeper. The output should be formatted like this:
Defenders
- Domagoj Vida
Forwards
- Antoine Griezmann
- Ivan Perisic
- Kylian Mbappe
Midfielders
- Luka Modric
- Paul Pogba
Assuming the same setup from the previous iterations, the WorldCup class should now follow this interaction pattern:
pry(main)> world_cup.all_players
#=> "Defenders\n\t- Domagoj Vida\n\nForwards\n\t- Antoine Griezmann\n\t- Ivan Perisic\n\t- Kylian Mbappe\n\nMidfielders\n\t- Luka Modric\n\t- Paul Pogba"Additionally, this method should take an optional boolean argument. If it is true, this method should only list active players. The WorldCup class should follow this interaction pattern:
pry(main)> croatia.eliminated = true
#=> true
pry(main)> world_cup.all_players(true)
#=> "Forwards\n\t- Antoine Griezmann\n\t- Kylian Mbappe\n\nMidfielders\n\t- Paul Pogba"
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