test: create testing functions for average number of guesses over all possible targets

Proj2.hs

@@ -54,6 +54,7 @@ module Proj2
     GameState,
     initialGuess,
     nextGuess,
+    avgGuesses,
   )
 where
 
@@ -250,3 +251,22 @@ allChords =
         | note <- [minBound .. maxBound],
           octave <- [minBound .. maxBound]
       ]
+
+-- ==== TESTING ===============================================================
+
+guessTest :: [Pitch] -> Int
+guessTest target = loop target guess other 1
+  where
+    (guess, other) = initialGuess
+
+loop :: [Pitch] -> [Pitch] -> GameState -> Int -> Int
+loop target guess other guesses
+  | answer == (3, 0, 0) = guesses
+  | otherwise = loop target guess' other' (guesses + 1)
+  where
+    answer = feedback target guess
+    (guess', other') = nextGuess (guess, other) answer
+
+avgGuesses = fromIntegral (sum results) / fromIntegral (length results)
+  where
+    results = map guessTest allChords