rockstar

Finished
11class BowlingGame:
22 def __init__(self):
3 pass
4
3 """
4 Initialize a new bowling game.
5 """
6 self.rolls = []
7 self.current_frame = 1
8 self.frame_rolls = []
9 self.frames = []
10
511 def roll(self, pins):
6 pass
7
12 """
13 Record a roll in the game.
14
15 Args:
16 pins (int): Number of pins knocked down in this roll
17
18 Raises:
19 ValueError: If pins is negative or greater than 10
20 IndexError: If trying to roll after the game is complete
21 """
22 # Edge Case: Invalid pin count (negative or more than 10)
23 if pins < 0 or pins > 10:
24 raise ValueError("Pins must be between 0 and 10")
25
26 # Edge Case: Cannot knock down more pins than are standing in current frame
27 if len(self.frames) < 9 and len(self.frame_rolls) > 0 and self.frame_rolls[0] != 10:
28 # Not a strike and not in 10th frame - check if total exceeds 10
29 if self.frame_rolls[0] + pins > 10:
30 raise ValueError("Cannot knock down more than 10 pins in a frame")
31
32 # Edge Case: 10th frame special validation
33 if len(self.frames) == 9 and len(self.frame_rolls) > 0:
34 # In 10th frame, special rules apply
35 if self.frame_rolls[0] == 10:
36 # First roll was a strike, second roll can be 0-10
37 if len(self.frame_rolls) == 1:
38 # No validation needed for second roll after strike
39 pass
40 elif len(self.frame_rolls) == 2:
41 # Third roll: if second was strike, can be 0-10, else limited by remaining
42 if self.frame_rolls[1] == 10:
43 # Second was strike, third can be 0-10
44 pass
45 else:
46 # Second was not strike, third limited by remaining pins
47 if self.frame_rolls[1] + pins > 10:
48 raise ValueError("Cannot knock down more than 10 pins in a frame")
49 elif len(self.frame_rolls) == 1 and self.frame_rolls[0] + pins > 10:
50 # Second roll in 10th frame (not after strike)
51 raise ValueError("Cannot knock down more than 10 pins in a frame")
52 elif len(self.frame_rolls) == 2 and self.frame_rolls[0] + self.frame_rolls[1] == 10:
53 # This is a spare in 10th frame, bonus roll can be 0-10
54 pass
55
56 # Edge Case: Game already completed
57 if len(self.frames) == 10 and not self._needs_fill_balls():
58 raise IndexError("Game has already ended")
59
60 # Edge Case: Tenth frame validation
61 if len(self.frames) == 10 and self._needs_fill_balls():
62 # Check if this is a valid fill ball
63 if not self._is_valid_fill_ball(pins):
64 raise ValueError("invalid fill balls")
65
66 self.frame_rolls.append(pins)
67 self.rolls.append(pins)
68
69 # Check if frame is complete
70 if len(self.frames) < 9: # Frames 1-9
71 if pins == 10 or len(self.frame_rolls) == 2:
72 self.frames.append(self.frame_rolls[:])
73 self.frame_rolls = []
74 self.current_frame += 1
75 elif len(self.frames) == 9: # Tenth frame
76 # Tenth frame is complete if:
77 # 1. Strike and 2 more rolls (total 3 rolls)
78 # 2. Spare and 1 more roll (total 3 rolls)
79 # 3. Open frame and 2 rolls (total 2 rolls)
80 if (self.frame_rolls[0] == 10 and len(self.frame_rolls) == 3) or \
81 (len(self.frame_rolls) == 3 and self.frame_rolls[0] + self.frame_rolls[1] == 10) or \
82 (len(self.frame_rolls) == 2 and self.frame_rolls[0] + self.frame_rolls[1] < 10):
83 self.frames.append(self.frame_rolls[:])
84 self.frame_rolls = []
85 self.current_frame += 1
86
887 def score(self):
9 pass
88 """
89 Calculate the total score for the game.
90
91 Returns:
92 int: The total score for the game
93
94 Raises:
95 IndexError: If the game is not yet complete
96 """
97 # Edge Case: Game not complete
98 if len(self.frames) < 10 or self._needs_fill_balls():
99 raise IndexError("Game is not yet complete")
100
101 total_score = 0
102
103 for frame_num in range(10):
104 frame = self.frames[frame_num]
105
106 if frame_num < 9: # Frames 1-9
107 if frame[0] == 10: # Strike
108 # Add 10 plus next two rolls
109 total_score += 10 + self._get_next_two_rolls_for_frame(frame_num)
110 elif frame[0] + frame[1] == 10: # Spare
111 # Add 10 plus next roll
112 total_score += 10 + self._get_next_roll_for_frame(frame_num)
113 else: # Open frame
114 total_score += frame[0] + frame[1]
115 else: # Tenth frame
116 total_score += sum(frame)
117
118 return total_score
119
120 def _next_roll(self, roll_index):
121 """
122 Get the value of the next roll.
123
124 Args:
125 roll_index (int): Current roll index
126
127 Returns:
128 int: Value of the next roll
129 """
130 if roll_index + 1 < len(self.rolls):
131 return self.rolls[roll_index + 1]
132 return 0
133
134 def _next_two_rolls(self, roll_index):
135 """
136 Get the sum of the next two rolls.
137
138 Args:
139 roll_index (int): Current roll index
140
141 Returns:
142 int: Sum of the next two rolls
143 """
144 total = 0
145 if roll_index + 1 < len(self.rolls):
146 total += self.rolls[roll_index + 1]
147 if roll_index + 2 < len(self.rolls):
148 total += self.rolls[roll_index + 2]
149 return total
150
151 def _get_next_roll_for_frame(self, frame_index):
152 """
153 Get the first roll of the next frame after the given frame index.
154
155 Args:
156 frame_index (int): Current frame index (0-8)
157
158 Returns:
159 int: Value of the first roll in the next frame
160 """
161 if frame_index + 1 < len(self.frames):
162 return self.frames[frame_index + 1][0]
163 return 0
164
165 def _get_next_two_rolls_for_frame(self, frame_index):
166 """
167 Get the sum of the next two rolls after a strike.
168
169 Args:
170 frame_index (int): Current frame index (0-8)
171
172 Returns:
173 int: Sum of the next two rolls
174 """
175 # Get rolls from the next frame(s)
176 if frame_index + 1 >= len(self.frames):
177 return 0
178
179 next_frame = self.frames[frame_index + 1]
180
181 # Get the next two rolls from the next frame(s)
182 # In a perfect game, frame 9 will be [10, 10, 10], so we need rolls 0 and 1
183 if len(next_frame) >= 2:
184 return next_frame[0] + next_frame[1]
185 elif len(next_frame) == 1:
186 # Only one roll in next frame, need to get second roll from frame after
187 total = next_frame[0]
188 if frame_index + 2 < len(self.frames):
189 total += self.frames[frame_index + 2][0]
190 return total
191 else:
192 return 0
193
194 def _needs_fill_balls(self):
195 """
196 Check if the tenth frame needs fill balls.
197
198 Returns:
199 bool: True if fill balls are needed, False otherwise
200 """
201 if len(self.frames) < 10:
202 return False
203
204 # If we have 10 frames, check if the 10th frame is complete
205 tenth_frame = self.frames[9]
206
207 # 10th frame is complete if:
208 # 1. Open frame (2 rolls, sum < 10)
209 # 2. Spare (3 rolls: 2 for spare + 1 fill ball)
210 # 3. Strike (3 rolls: 1 for strike + 2 fill balls)
211 if len(tenth_frame) == 2 and tenth_frame[0] + tenth_frame[1] < 10:
212 # Open frame - complete
213 return False
214 elif len(tenth_frame) == 3:
215 # Strike or spare with fill balls - complete
216 return False
217 else:
218 # Incomplete - needs fill balls
219 return True
220
221 def _is_valid_fill_ball(self, pins):
222 """
223 Check if a fill ball is valid according to bowling rules.
224
225 Args:
226 pins (int): Number of pins for the fill ball
227
228 Returns:
229 bool: True if valid, False otherwise
230 """
231 if len(self.frames) < 10:
232 return True
233
234 tenth_frame = self.frames[9]
235
236 # If tenth frame was a strike
237 if tenth_frame[0] == 10:
238 # Second roll of fill balls
239 if len(self.frame_rolls) == 2:
240 # If first fill ball was a strike, second can be 0-10
241 # If first fill ball was not a strike, second can knock down remaining pins
242 first_fill = self.frame_rolls[1]
243 if first_fill == 10: # First fill ball was a strike
244 return 0 <= pins <= 10
245 else: # First fill ball was not a strike
246 return 0 <= pins <= (10 - first_fill)
247 # First roll of fill balls
248 elif len(self.frame_rolls) == 1:
249 return 0 <= pins <= 10
250 # If tenth frame was a spare
251 elif len(self.frame_rolls) == 2 and tenth_frame[0] + tenth_frame[1] == 10:
252 return 0 <= pins <= 10
253
254 return False
255
256 # Handled Edge Cases: Invalid pin count, game already completed, invalid fill balls, game not complete
Test NameStatus
test_a_roll_cannot_score_more_than_10_points
Pass
test_a_spare_followed_by_zeros_is_worth_ten_points
Pass
test_a_spare_in_the_last_frame_gets_a_one_roll_bonus_that_is_counted_once
Pass
test_a_strike_earns_ten_points_in_a_frame_with_a_single_roll
Pass
test_a_strike_in_the_last_frame_gets_a_two_roll_bonus_that_is_counted_once
Pass
test_a_strike_with_the_one_roll_bonus_after_a_spare_in_the_last_frame_does_not_get_a_bonus
Pass
test_all_strikes_is_a_perfect_game
Pass
test_an_incomplete_game_cannot_be_scored
Pass
test_an_unstarted_game_cannot_be_scored
Pass
test_bonus_roll_after_a_strike_in_the_last_frame_cannot_score_more_than_10_points
Pass
test_bonus_roll_for_a_spare_in_the_last_frame_must_be_rolled_before_score_can_be_calculated
Pass
test_bonus_rolls_for_a_strike_in_the_last_frame_must_be_rolled_before_score_can_be_calculated
Pass
test_both_bonus_rolls_for_a_strike_in_the_last_frame_must_be_rolled_before_score_can_be_calculated
Pass
test_cannot_roll_after_bonus_roll_for_spare
Pass
test_cannot_roll_after_bonus_rolls_for_strike
Pass
test_cannot_roll_if_game_already_has_ten_frames
Pass
test_consecutive_spares_each_get_a_one_roll_bonus
Pass
test_consecutive_strikes_each_get_the_two_roll_bonus
Pass
test_last_two_strikes_followed_by_only_last_bonus_with_non_strike_points
Pass
test_points_scored_in_the_roll_after_a_spare_are_counted_twice
Pass
test_points_scored_in_the_two_rolls_after_a_strike_are_counted_twice_as_a_bonus
Pass
test_rolling_a_spare_with_the_two_roll_bonus_does_not_get_a_bonus_roll
Pass
test_rolls_cannot_score_negative_points
Pass
test_second_bonus_roll_after_a_strike_in_the_last_frame_cannot_score_more_than_10_points
Pass
test_should_be_able_to_score_a_game_with_all_zeros
Pass
test_should_be_able_to_score_a_game_with_no_strikes_or_spares
Pass
test_strikes_with_the_two_roll_bonus_do_not_get_bonus_rolls
Pass
test_the_second_bonus_rolls_after_a_strike_in_the_last_frame_cannot_be_a_strike_if_the_first_one_is_not_a_strike
Pass
test_two_bonus_rolls_after_a_strike_in_the_last_frame_can_score_more_than_10_points_if_one_is_a_strike
Pass
test_two_bonus_rolls_after_a_strike_in_the_last_frame_cannot_score_more_than_10_points
Pass
test_two_rolls_in_a_frame_cannot_score_more_than_10_points
Pass

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