105 lines
3.2 KiB
Python
105 lines
3.2 KiB
Python
# These tests are auto-generated with test data from:
|
|
# https://github.com/exercism/problem-specifications/tree/main/exercises/knapsack/canonical-data.json
|
|
# File last updated on 2023-12-27
|
|
|
|
import unittest
|
|
|
|
from knapsack import (
|
|
maximum_value,
|
|
)
|
|
|
|
|
|
class KnapsackTest(unittest.TestCase):
|
|
def test_no_items(self):
|
|
self.assertEqual(maximum_value(100, []), 0)
|
|
|
|
def test_one_item_too_heavy(self):
|
|
self.assertEqual(maximum_value(10, [{"weight": 100, "value": 1}]), 0)
|
|
|
|
def test_five_items_cannot_be_greedy_by_weight(self):
|
|
self.assertEqual(
|
|
maximum_value(
|
|
10,
|
|
[
|
|
{"weight": 2, "value": 5},
|
|
{"weight": 2, "value": 5},
|
|
{"weight": 2, "value": 5},
|
|
{"weight": 2, "value": 5},
|
|
{"weight": 10, "value": 21},
|
|
],
|
|
),
|
|
21,
|
|
)
|
|
|
|
def test_five_items_cannot_be_greedy_by_value(self):
|
|
self.assertEqual(
|
|
maximum_value(
|
|
10,
|
|
[
|
|
{"weight": 2, "value": 20},
|
|
{"weight": 2, "value": 20},
|
|
{"weight": 2, "value": 20},
|
|
{"weight": 2, "value": 20},
|
|
{"weight": 10, "value": 50},
|
|
],
|
|
),
|
|
80,
|
|
)
|
|
|
|
def test_example_knapsack(self):
|
|
self.assertEqual(
|
|
maximum_value(
|
|
10,
|
|
[
|
|
{"weight": 5, "value": 10},
|
|
{"weight": 4, "value": 40},
|
|
{"weight": 6, "value": 30},
|
|
{"weight": 4, "value": 50},
|
|
],
|
|
),
|
|
90,
|
|
)
|
|
|
|
def test_8_items(self):
|
|
self.assertEqual(
|
|
maximum_value(
|
|
104,
|
|
[
|
|
{"weight": 25, "value": 350},
|
|
{"weight": 35, "value": 400},
|
|
{"weight": 45, "value": 450},
|
|
{"weight": 5, "value": 20},
|
|
{"weight": 25, "value": 70},
|
|
{"weight": 3, "value": 8},
|
|
{"weight": 2, "value": 5},
|
|
{"weight": 2, "value": 5},
|
|
],
|
|
),
|
|
900,
|
|
)
|
|
|
|
def test_15_items(self):
|
|
self.assertEqual(
|
|
maximum_value(
|
|
750,
|
|
[
|
|
{"weight": 70, "value": 135},
|
|
{"weight": 73, "value": 139},
|
|
{"weight": 77, "value": 149},
|
|
{"weight": 80, "value": 150},
|
|
{"weight": 82, "value": 156},
|
|
{"weight": 87, "value": 163},
|
|
{"weight": 90, "value": 173},
|
|
{"weight": 94, "value": 184},
|
|
{"weight": 98, "value": 192},
|
|
{"weight": 106, "value": 201},
|
|
{"weight": 110, "value": 210},
|
|
{"weight": 113, "value": 214},
|
|
{"weight": 115, "value": 221},
|
|
{"weight": 118, "value": 229},
|
|
{"weight": 120, "value": 240},
|
|
],
|
|
),
|
|
1458,
|
|
)
|