def test_score(self):
"""Should score things based on a cool formula."""
now = str(time.time())
# 4 users, 9000 views, no gold
listing1 = {
'listing_id': 1,
'quantity': 1,
'state': 'active',
'views': 9000,
'materials': [],
'users': 4,
'original_creation_tsz': now,
}
# 40 users, 9 views, 10 quantity, no gold
listing2 = {
'listing_id': 2,
'quantity': 10,
'state': 'active',
'views': 9,
'materials': [],
'users': 40,
'original_creation_tsz': now,
}
# 1 user, 10 views, 10 quantity, gold
listing3 = {
'listing_id': 3,
'quantity': 10,
'state': 'active',
'views': 10,
'materials': ['gold'],
'users': 1,
'original_creation_tsz': now,
}
score_listing(listing1)
score_listing(listing2)
score_listing(listing3)
assert r.zscore('treasures', '1') < r.zscore('treasures', '2')
assert r.zscore('treasures', '2') < r.zscore('treasures', '3')
def test_score_decays_with_age(self):
"""Should score older things lower."""
now = time.time()
listing1 = {
'listing_id': 1,
'quantity': 1,
'state': 'active',
'views': 9000,
'materials': [],
'users': 4,
'original_creation_tsz': str(now),
}
listing2 = {
'listing_id': 2,
'quantity': 1,
'state': 'active',
'views': 9000,
'materials': [],
'users': 4,
'original_creation_tsz': str(now - 100),
}
listing3 = {
'listing_id': 3,
'quantity': 1,
'state': 'active',
'views': 9000,
'materials': [],
'users': 4,
'original_creation_tsz': str(now - 500),
}
score_listing(listing1)
score_listing(listing2)
score_listing(listing3)
assert r.zscore('treasures', '1') > r.zscore('treasures', '2')
assert r.zscore('treasures', '2') > r.zscore('treasures', '3')
def test_never_negative(self):
"""Event the oldest things shouldn't have negative scores."""
score_listing({
'listing_id': 1,
'quantity': 1,
'state': 'active',
'views': 9000,
'materials': [],
'users': 4,
'original_creation_tsz': '1',
})
assert r.zscore('treasures', '1') > 0
