HackerRank Day 27 Testing 30 days of code solution

 In this HackerRank Day, 27 Testing 30 days of code problem set all the code is written, we only need to pass the test input data and validate the code.

Problem solution in Python 3 programming.

def minimum_index(seq):
    if len(seq) == 0:
        raise ValueError("Cannot get the minimum value index from an empty sequence")
    min_idx = 0
    for i in range(1, len(seq)):
        if seq[i] < seq[min_idx]:
            min_idx = i
    return min_idx
class TestDataEmptyArray(object):
    
    @staticmethod
    def get_array():
        return list()

class TestDataUniqueValues(object):

    @staticmethod
    def get_array():
        return [7,9,1,2,-7,10,22]

    @staticmethod
    def get_expected_result():
        return 4

class TestDataExactlyTwoDifferentMinimums(object):

    @staticmethod
    def get_array():
        return [7,9,1,2,-7,10,22,-7]

    @staticmethod
    def get_expected_result():
        return 4


def TestWithEmptyArray():
    try:
        seq = TestDataEmptyArray.get_array()
        result = minimum_index(seq)
    except ValueError as e:
        pass
    else:
        assert False


def TestWithUniqueValues():
    seq = TestDataUniqueValues.get_array()
    assert len(seq) >= 2

    assert len(list(set(seq))) == len(seq)

    expected_result = TestDataUniqueValues.get_expected_result()
    result = minimum_index(seq)
    assert result == expected_result


def TestiWithExactyTwoDifferentMinimums():
    seq = TestDataExactlyTwoDifferentMinimums.get_array()
    assert len(seq) >= 2
    tmp = sorted(seq)
    assert tmp[0] == tmp[1] and (len(tmp) == 2 or tmp[1] < tmp[2])

    expected_result = TestDataExactlyTwoDifferentMinimums.get_expected_result()
    result = minimum_index(seq)
    assert result == expected_result

TestWithEmptyArray()
TestWithUniqueValues()
TestiWithExactyTwoDifferentMinimums()
print("OK")