Write a function to search an element in the given array by using sequential search.
def sequential_search(dlist, item):
    pos = 0
    found = False
    while pos < len(dlist) and not found:
        if dlist[pos] == item:
            found = True
        else:
            pos = pos + 1
    return found, pos
<s>[INST]<<SYS>>Given a task and its code, generate test cases for the code.<</SYS>>Write a function to search an element in the given array by using sequential search.
def sequential_search(dlist, item):
    pos = 0
    found = False
    while pos < len(dlist) and not found:
        if dlist[pos] == item:
            found = True
        else:
            pos = pos + 1
    return found, pos[/INST]assert sequential_search([11,23,58,31,56,77,43,12,65,19],31) == (True, 3)
assert sequential_search([12, 32, 45, 62, 35, 47, 44, 61],61) == (True, 7)
assert sequential_search([9, 10, 17, 19, 22, 39, 48, 56],48) == (True, 6)</s>