You are given a repository for Yatzy. It is implemented in many languages, but you can choose the language of your choice.

Your goal is to refactor it, keeping in mind language conventions, readbility, and maintabability. Feel free to change improve the tests, too.

Note: Some languages do not have the correct scores in the unit tests.

The game of Yatzy is a simple dice game. Each player rolls five six-sided dice. They can re-roll some or all of the dice up to three times (including the original roll).

For example, suppose a players rolls:

3,4,5,5,2

They hold (-,-,5,5,-) and re-roll (3,4,-,-,2):

5,1,5,5,3

They hold (5,-,5,5,-) and re-roll (-,1,-,-,3):

5,6,5,5,2

The player then places the roll in a category, such as ones, twos, fives, pair, two pairs etc (see below). If the roll is compatible with the category, the player gets a score for the roll according to the rules. If the roll is not compatible with the category, the player scores zero for the roll.

For example, suppose a player scores 5,6,5,5,2 in the fives category they would score 15 (three fives). The score for that go is then added to their total and the category cannot be used again in the remaining goes for that game. A full game consists of one go for each category. Thus, for their last go in a game, a player must choose their only remaining category.

Your task is to score a GIVEN roll in a GIVEN category. You do NOT have to program the random dice rolling. The game is NOT played by letting the computer choose the highest scoring category for a given roll.

The player scores the sum of all dice, no matter what they read. For example:

• 1,1,3,3,6 placed on "chance" scores 14 (1+1+3+3+6)
• 4,5,5,6,1 placed on "chance" scores 21 (4+5+5+6+1)

If all dice have the same number, the player scores 50 points. For example:

• 1,1,1,1,1 placed on "yatzy" scores 50
• 1,1,1,2,1 placed on "yatzy" scores 0

The player scores the sum of the dice that reads one, two, three, four, five or six, respectively. For example:

• 1,1,2,4,4 placed on "fours" scores 8 (4+4)
• 2,3,2,5,1 placed on "twos" scores 4 (2+2)
• 3,3,3,4,5 placed on "ones" scores 0

The player scores the sum of the two highest matching dice. For example, when placed on "pair":

• 3,3,3,4,4 scores 8 (4+4)
• 1,1,6,2,6 scores 12 (6+6)
• 3,3,3,4,1 scores 6 (3+3)
• 3,3,3,3,1 scores 6 (3+3)

If there are two pairs of dice with the same number, the player scores the sum of these dice. For example, when placed on "two pairs":

• 1,1,2,3,3 scores 8 (1+1+3+3)
• 1,1,2,3,4 scores 0
• 1,1,2,2,2 scores 6 (1+1+2+2)

If there are three dice with the same number, the player scores the sum of these dice. For example, when placed on "three of a kind":

• 3,3,3,4,5 scores 9 (3+3+3)
• 3,3,4,5,6 scores 0
• 3,3,3,3,1 scores 9 (3+3+3)

If there are four dice with the same number, the player scores the sum of these dice. For example, when placed on "four of a kind":

• 2,2,2,2,5 scores 8 (2+2+2+2)
• 2,2,2,5,5 scores 0
• 2,2,2,2,2 scores 8 (2+2+2+2)

When placed on "small straight", four sequencial numbers. E.g. if the dice read

• 1,2,3,4,n scores 30.

When placed on "large straight", five sequencial numbers. E.g. if the dice read

• 2,3,4,5,6 scores 40.

If the dice are two of a kind and three of a kind. E.g. if the dice read

• 1,1,2,2,2 scores 25
• 2,2,3,3,4 scores 0
• 4,4,4,4,4 scores 0