def test_get_similarity_from_subscriptions(self):
"""
Test that the similarity is calculated as the cosine between the two
vectors of subscriptions shared by the two channels.
"""
c0, c1, c2, c3, c4 = self.channels[:5]
c0_c1 = utils.get_similarity_from_subscriptions(c0, c1) # 1
c0_c2 = utils.get_similarity_from_subscriptions(c0, c2) # 0.5
c1_c2 = utils.get_similarity_from_subscriptions(c1, c2) # 0.5
c3_c4 = utils.get_similarity_from_subscriptions(c3, c4) # 0
self.assertTrue(c0_c1 > c0_c2)
self.assertTrue(c0_c1 > c1_c2)
self.assertTrue(c0_c1 > c3_c4)
self.assertTrue(c0_c2 > c3_c4)
def test_ignore_ignored_subscription(self):
"""
Recommendation calculations should ignore recommendations where the
ignore_for_recommendations field is True.
"""
c4, c5 = self.channels[4], self.channels[5]
self.assertEquals(utils.get_similarity_from_subscriptions(c4,
c5.id), 0)
def test_ignore_old_recommendations(self):
"""
Recommendation calculations should ignore subscriptions older than
6 months (16070400 seconds).
"""
c4, c7 = self.channels[4], self.channels[7]
self.assertEquals(utils.get_similarity_from_subscriptions(c4,
c7.id), 0)
def test_ignore_null_ip_address(self):
"""
get_similarity_from_subscriptions should not count 0.0.0.0 as a common
IP since it is used if the IP is not known.
"""
c0, c3 = self.channels[0], self.channels[3]
self.assertEquals(utils.get_similarity_from_subscriptions(c0,
c3.id), 0)
def test_ignore_ignored_subscription(self):
"""
Recommendation calculations should ignore recommendations where the
ignore_for_recommendations field is True.
"""
c4, c5 = self.channels[4], self.channels[5]
self.assertEquals(utils.get_similarity_from_subscriptions(c4, c5.id),
0)
def test_ignore_old_recommendations(self):
"""
Recommendation calculations should ignore subscriptions older than
6 months (16070400 seconds).
"""
c4, c7 = self.channels[4], self.channels[7]
self.assertEquals(utils.get_similarity_from_subscriptions(c4, c7.id),
0)
def test_ignore_null_ip_address(self):
"""
get_similarity_from_subscriptions should not count 0.0.0.0 as a common
IP since it is used if the IP is not known.
"""
c0, c3 = self.channels[0], self.channels[3]
self.assertEquals(utils.get_similarity_from_subscriptions(c0, c3.id),
0)
def test_get_similarity_from_subscriptions(self):
"""
Test that the similarity is calculated as the cosine between the two
vectors of subscriptions shared by the two channels.
"""
c0, c1, c2, c3, c4 = self.channels[:5]
c0_c1 = utils.get_similarity_from_subscriptions(
c0, c1) # 1
c0_c2 = utils.get_similarity_from_subscriptions(
c0, c2) # 0.5
c1_c2 = utils.get_similarity_from_subscriptions(
c1, c2) # 0.5
c3_c4 = utils.get_similarity_from_subscriptions(
c3, c4) # 0
self.assertTrue(c0_c1 > c0_c2)
self.assertTrue(c0_c1 > c1_c2)
self.assertTrue(c0_c1 > c3_c4)
self.assertTrue(c0_c2 > c3_c4)
