day-27-solution.py

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:
	def get_array():
		return list()

class TestDataUniqueValues:
	def get_array():
		return [1, 2]

	def get_expected_result():
		return 0

class TestDataExactlyTwoDifferentMinimums:
	def get_array():
		return [1, 2, 3, 4, 1, 5]

	def get_expected_result():
		return 0


def TestWithEmptyArray():
	try:
		seq = TestDataEmptyArray.get_array()
		_ = minimum_index(seq)
	except ValueError as exp:
		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


if __name__ == "__main__":
	# Execute tests
	TestWithEmptyArray()
	TestWithUniqueValues()
	TestiWithExactyTwoDifferentMinimums()
	print("OK")