def test_remove_duplicates():
arr1 = ["live", "arp", "strong", "live"]
arr2 = ["lively", "alive", "harp", "sharp", "armstrong"]
result = ['arp', 'live', 'strong']
assert in_array(arr1, arr2) == result
def test_return_the_result_sorted():
arr1 = ["live", "arp", "strong"]
arr2 = ["lively", "alive", "harp", "sharp", "armstrong"]
result = ['arp', 'live', 'strong']
assert in_array(arr1, arr2) == result
def test_inarray():
# given two empty arrays returns an empty array
arr1 = []
arr2 = []
result = []
assert in_array(arr1, arr2) == result
def test_find_several_substrings():
# find all the substrings in the arrays
arr1 = ["arp", "live", "strong"]
arr2 = ["lively", "alive", "harp", "sharp", "armstrong"]
result = ["arp", "live", "strong"]
assert in_array(arr1, arr2) == result
def test_find_substrings_and_break():
# given two words which one substring, find that substring.
arr1 = ["live"]
arr2 = ["lively", "alive"]
result = ["live"]
assert in_array(arr1, arr2) == result
def test_find_substrings():
# given a substring, returnss that word.
arr1 = ["live"]
arr2 = ["lively"]
result = ["live"]
assert in_array(arr1, arr2) == result