def test_transfer_minimized(self):
"""
Test that the number of transfers is actually minimized.
Taken from a real-world situation, we discovered that failing
to re-order the debt lists after every transfer could lead to
extra, unnecessary transfers.
"""
self.assertEqual(len(totals.settle({"Alice": 100, "Bob": -85, "Charlie": 35, "Dave": -35, "Eve": -15})), 3)
def test_settle_uneven_positive(self):
try:
transfers = totals.settle({
'Alice': -50,
'Bob': -50,
'Charlie': -50
})
except totals.DirtyBooks:
pass
def test_transfer_minimized(self):
"""
Test that the number of transfers is actually minimized.
Taken from a real-world situation, we discovered that failing
to re-order the debt lists after every transfer could lead to
extra, unnecessary transfers.
"""
self.assertEqual(
len(
totals.settle({
'Alice': 100,
'Bob': -85,
'Charlie': 35,
'Dave': -35,
'Eve': -15
})), 3)
def test_settle_uneven_negative(self):
try:
transfers = totals.settle({"Alice": 50, "Bob": 50, "Charlie": 50})
except totals.DirtyBooks:
pass
def test_settle_positive(self):
transfers = totals.settle({"Alice": -50, "Bob": 100, "Charlie": -50})
assert transfers == [("Bob", "Charlie", 50), ("Bob", "Alice", 50)]
def test_settle_even(self):
transfers = totals.settle({"Alice": 0, "Bob": 0, "Charlie": 0})
assert transfers == []
def test_settle_positive(self):
transfers = totals.settle({'Alice': -50, 'Bob': 100, 'Charlie': -50})
assert transfers == [('Bob', 'Charlie', 50), ('Bob', 'Alice', 50)]
def test_settle_even(self):
transfers = totals.settle({'Alice': 0, 'Bob': 0, 'Charlie': 0})
assert transfers == []
