def test_left_join_empty_right(left_map):
empty_map = {}
assert left_join(left_map, empty_map) == [['fond', 'enamored', None],
['wrath', 'anger', None],
['diligent', 'employed', None],
['outfit', 'garb', None],
['guide', 'usher', None]]
def test_no_matches(hash):
actual = left_join(hash[2], hash[3])
expected = [
["rich", "wealthy", None],
["good", "nice", None],
["long", "tall", None],
["happy", "amused", None],
]
assert actual == expected
def test_join_left_all_the_same(hash):
actual = left_join(hash[0], hash[1])
expected = [
["fond", "enamored", "averse"],
["wrath", "anger", "delight"],
["diligent", "employer", "idle"],
["outfit", "garb", None],
["guide", "usher", "follow"],
]
assert actual == expected
def test_one_is_empty(hash):
actual = left_join(hash[4], hash[5])
expected = [
["fond", "enamored", None],
["wrath", "anger", None],
["diligent", "employer", None],
["outfit", "garb", None],
["guide", "usher", None],
]
assert actual == expected
def test_empty_first_ht():
ht1 = Hashtable()
ht2 = Hashtable()
ht2.add("fond", "averse")
ht2.add("wrath", "delight")
ht2.add("diligent", "idle")
ht2.add("guide", "follow")
ht2.add("flow", "jam")
actual = left_join(ht1, ht2)
# changed order from example. order is dependent on hash function. intent met.
expected = []
assert actual == expected
def test_empty_second_ht():
ht1 = Hashtable()
ht1.add("fond", "enamored")
ht1.add("wrath", "anger")
ht1.add("diligent", "employed")
ht1.add("outfit", "garb")
ht1.add("guide", "usher")
ht2 = Hashtable()
actual = left_join(ht1, ht2)
# changed order from example. order is dependent on hash function. intent met.
expected = [
["fond", "enamored", None],
["diligent", "employed", None],
["guide", "usher", None],
["outfit", "garb", None],
["wrath", "anger", None],
]
assert actual == expected
def test_provided_example():
ht1 = Hashtable()
ht1.add("fond", "enamored")
ht1.add("wrath", "anger")
ht1.add("diligent", "employed")
ht1.add("outfit", "garb")
ht1.add("guide", "usher")
ht2 = Hashtable()
ht2.add("fond", "averse")
ht2.add("wrath", "delight")
ht2.add("diligent", "idle")
ht2.add("guide", "follow")
ht2.add("flow", "jam")
actual = left_join(ht1, ht2)
# changed order from example. order is dependent on hash function. intent met.
expected = [
["fond", "enamored", "averse"],
["diligent", "employed", "idle"],
["guide", "usher", "follow"],
["outfit", "garb", None],
["wrath", "anger", "delight"],
]
assert actual == expected
def test_left_join(test_hash_one, test_hash_two):
actual = left_join(test_hash_one, test_hash_two)
expected = [['fond', 'enamored', 'averse'], ['wrath', 'anger', 'delight'],
['guide', 'usher', 'follow'], ['outfit', 'garb', None],
['diligent', 'employed', 'idle']]
assert actual == expected
def test_left_join_happy_path(left_map, right_map):
assert left_join(left_map, right_map) == [['fond', 'enamored', 'averse'],
['wrath', 'anger', 'delight'],
['diligent', 'employed', 'idle'],
['outfit', 'garb', None],
['guide', 'usher', 'follow']]
def test_left_join_both_empty():
empty_map = {}
assert left_join(empty_map, empty_map) == []
def test_left_join_empty_left(right_map):
empty_map = {}
assert left_join(empty_map, right_map) == []