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24 lines
652 B
24 lines
652 B
require "minitest"
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require "rank_king"
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class TestRankKing < Minitest::Test
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def setup
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@pool = Pool.create(name: "pool")
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@axis = Axis.create(pool: @pool, name: "axis")
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@items = (?a..?d).map { Item.create(pool: @pool, title: _1) }
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end
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def test_rank_king
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ratings = @pool.items.map {|item| Rating.first(axis: @axis, item:) || OS.rating }
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original_sigma_sq = Math.sqrt(ratings.sum { _1.sigma ** 2 })
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game = RankKing.suggest_game(@axis)
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winner, loser = game.shuffle
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RankKing.rank(@axis, winner:, loser:)
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sigma_sq = Math.sqrt(@axis.ratings.sum { _1.sigma ** 2 })
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assert original_sigma_sq > sigma_sq
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end
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end
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