def test_left_join_only_left(ht_left):
actual = left_join(ht_left, Hashtable())
expected = [
["outfit", "garb", None],
["guide", "usher", None],
["wrath", "anger", None],
["diligent", "employed", None],
["fond", "enamored", None],
]
assert actual == expected
def test_left_join_simple(ht_left, ht_right):
actual = left_join(ht_left, ht_right)
expected = [
["outfit", "garb", None],
["guide", "usher", "follow"],
["wrath", "anger", "delight"],
["diligent", "employed", "idle"],
["fond", "enamored", "averse"],
]
assert actual == expected
def test_1():
hash_1 = Hashtable(4)
hash_1.add('key1', 'word1')
hash_1.add('key2', 'word2')
hash_1.add('key3', 'word3')
hash_2 = Hashtable(4)
hash_2.add('key1', 'word11')
hash_2.add('key2', 'word22')
hash_2.add('key3', 'word33')
actual = left_join(hash_1, hash_2)
expected = [
['key3', 'word3', 'word33'],
['key2', 'word2', 'word22'],
['key1', 'word1', 'word11'],
]
assert actual == expected
def test_2():
hash_1 = Hashtable(4)
hash_1.add('key1', 'word1')
hash_1.add('key2', 'word2')
hash_1.add('key3', 'word3')
hash_1.add('key4', 'word4')
hash_2 = Hashtable(4)
hash_2.add('key1', 'word11')
hash_2.add('key2', 'word22')
hash_2.add('key3', 'word33')
actual = left_join(hash_1, hash_2)
expected = [
['key3', 'word3', 'word33'],
['key2', 'word2', 'word22'],
['key1', 'word1', 'word11'],
['key4', 'word4', None],
]
assert len(actual) == len(expected)
def test_left_join():
actual = left_join(key={
'first': 'Yahya',
'second': 'Zakaria',
'third': 'Hasan',
'fourth': 'Mustafa',
'fifth': 'Mohammed',
'sixth': 'Yaqoub'
},
key2={
'first': 'Muhannad',
'second': 'Laith',
'third': 'Ahmad',
'fourth': 'Khaled',
'family': 'Mughrabi'
})
excepted = [['first', 'Yahya', 'Muhannad'], ['second', 'Zakaria', 'Laith'],
['third', 'Hasan', 'Ahmad'], ['fourth', 'Mustafa', 'Khaled'],
['fifth', 'Mohammed', 'None'], ['sixth', 'Yaqoub', 'None']]
assert actual == excepted
def test_left_join_both_empty():
actual = left_join(Hashtable(), Hashtable())
expected = []
assert actual == expected
def test_left_join_only_right(ht_right):
actual = left_join(Hashtable(), ht_right)
expected = []
assert actual == expected