test for testing player rank

test/players_rank_test.rb

@@ -0,0 +1,44 @@
+require "helper"
+
+class PlayersRankTest < Test::Unit::TestCase
+  def setup
+    @player_a = Player.find_or_create_by_full_name(:full_name => "Sean Behan")
+    @player_b = Player.find_or_create_by_full_name(:full_name => "Pete Land")
+    @player_c = Player.find_or_create_by_full_name(full_name: "Tom McDaniel")
+  end
+
+  def test_calculate_player_rank
+    10.times do
+      # Sean beats Pete 10 times by 2
+      Game.create(:challenger => @player_a, :challengee => @player_b, :challenger_score => 21, :challengee_score => 19, :winner => @player_a, :loser => @player_b, :completed_at => Time.now)
+      # Sean beats Tom 10 times by 6
+      Game.create(:challenger => @player_a, :challengee => @player_c, :challenger_score => 21, :challengee_score => 15, :winner => @player_a, :loser => @player_c, :completed_at => Time.now)
+      # Pete beats Tom 10 times by 4
+      Game.create(:challenger => @player_b, :challengee => @player_c, :challenger_score => 21, :challengee_score => 17, :winner => @player_b, :loser => @player_c, :completed_at => Time.now)
+    end
+
+    # Pete beats Sean by 4
+    5.times do
+      Game.create(:challenger => @player_b, :challengee => @player_a, :challenger_score => 21, :challengee_score => 18, :winner => @player_b, :loser => @player_a, :completed_at => Time.now)
+    end
+
+    3.times do
+      # Tom beats Pete by 3
+      Game.create(:challenger => @player_c, :challengee => @player_b, :challenger_score => 21, :challengee_score => 18, :winner => @player_c, :loser => @player_b, :completed_at => Time.now)
+      # Tom beats Sean by 1
+      Game.create(:challenger => @player_c, :challengee => @player_a, :challenger_score => 21, :challengee_score => 20, :winner => @player_c, :loser => @player_a, :completed_at => Time.now)
+    end
+
+    Player.rank_players!
+
+    # Sean, Pete, Tom
+    assert_equal @player_a, Player.by_rank.first
+    assert_equal @player_b, Player.by_rank.second
+    assert_equal @player_c, Player.by_rank.third
+
+    puts %W(Pong_Player Wins Losses Rank).join("\t")
+    %W(first second third).each do |place|
+      puts [Player.by_rank.send(place).full_name, Player.by_rank.send(place).wins.count, Player.by_rank.send(place).losses.count, Player.by_rank.send(place).rank].join("\t")
+    end
+  end
+end