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_eight_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_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_two_items_105(self):
self.assertEqual(
maximum_value(10, [
{
"weight": 5,
"value": 15
},
{
"weight": 4,
"value": 40
},
{
"weight": 6,
"value": 30
},
{
"weight": 4,
"value": 50
},
{
"weight": 5,
"value": 55
},
],
show=True), (105, [{
'weight': 5,
'value': 55
}, {
'weight': 4,
'value': 50
}]))
def test_eight_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_fifteen_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)
def test_fifteen_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)
def test_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_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_no_items(self):
self.assertEqual(maximum_value(100, []), 0)
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_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_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_one_item_too_heavy(self):
self.assertEqual(maximum_value(10, [{"weight": 100, "value": 1}]), 0)
