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glicko-elixir/test/player_test.exs
Mikael Muszynski c1089996d3 Convert Player (v1/v2) and Result to structs
In an effort to give names to core concepts in the library, replace the
current way of passing around tuples (of varying length and content)
with appropriately named structs.

In the interest of keeping the patch focused: primarily replace internal
implementation of the added struct modules, and keep the interfaces for
creation, conversion (player v1 to v2, and vice versa), and field access
as they currently are.
2024-06-10 13:04:45 +02:00

68 lines
1.9 KiB
Elixir

defmodule Glicko.PlayerTest do
use ExUnit.Case
alias Glicko.Player
doctest Player
@valid_v1_base %Player.V1{rating: 1.0, rating_deviation: 2.0}
@valid_v2_base %Player.V2{rating: 1.0, rating_deviation: 2.0, volatility: 3.0}
test "create v1" do
assert @valid_v1_base == Player.new_v1(rating: 1.0, rating_deviation: 2.0)
end
test "create v2" do
assert @valid_v2_base == Player.new_v2(rating: 1.0, rating_deviation: 2.0, volatility: 3.0)
end
test "convert player v1 -> v2" do
assert Player.new_v2(
rating: Player.scale_rating_to(1.0, :v2),
rating_deviation: Player.scale_rating_deviation_to(2.0, :v2),
volatility: 3.0
) == Player.to_v2(@valid_v1_base, 3.0)
end
test "convert player v2 -> v1" do
assert Player.new_v1(
rating: Player.scale_rating_to(1.0, :v1),
rating_deviation: Player.scale_rating_deviation_to(2.0, :v1)
) == Player.to_v1(@valid_v2_base)
end
test "convert player v1 -> v1" do
assert @valid_v1_base == Player.to_v1(@valid_v1_base)
end
test "convert player v2 -> v2" do
assert @valid_v2_base == Player.to_v2(@valid_v2_base)
end
test "scale rating v1 -> v2" do
assert_in_delta Player.scale_rating_to(1673.7178, :v2), 1.0, 0.1
end
test "scale rating v2 -> v1" do
assert_in_delta Player.scale_rating_to(1.0, :v1), 1673.7178, 0.1
end
test "scale rating deviation v1 -> v2" do
assert_in_delta Player.scale_rating_deviation_to(173.7178, :v2), 1.0, 0.1
end
test "scale rating deviation v2 -> v1" do
assert_in_delta Player.scale_rating_deviation_to(1.0, :v1), 173.7178, 0.1
end
test "rating interval" do
assert {rating_low, rating_high} =
[rating: 1850, rating_deviation: 50]
|> Player.new_v2()
|> Player.rating_interval()
assert_in_delta rating_low, 1750, 0.1
assert_in_delta rating_high, 1950, 0.1
end
end