Rating color advantage test WIP (lichess-org#598)

Author: ddugovic

test-kit/src/test/scala/rating/glicko/GlickoCalculatorWithColorAdvantageTest.scala

@@ -5,12 +5,18 @@ package glicko
 class GlickoCalculatorWithColorAdvantageTest extends ChessTest:
 
   import Outcome.*
+  // http://www.glicko.net/glicko/glicko2.pdf
+  // If the player is unrated, set the rating to 1500
+  // and the RD to 350. Set the player’s volatility to
+  // 0.06 (this value depends on the particular application)
+  val RD: Double = 350d
+  val V: Double = 0.06d
 
   private def ratingDiff(r: Int, opRating: Int, outcome: Outcome, expected: Int)(using
       munit.Location
   ) =
-    val player = Player(Glicko(r, 1d, 1d))
-    val opponent = Player(Glicko(opRating, 1d, 1d))
+    val player = Player(Glicko(r, RD, V))
+    val opponent = Player(Glicko(opRating, RD, V))
     val game   = Game(ByColor(player, opponent), outcome)
     // TODO: calculator with color advantage
     val calculator = GlickoCalculator()