def test_delete_special_slice(self):
r3 = Matrix(self.data)
content = ['i', 'j', 1.1, 1]
del r3.row[0:0]
assert r3.row[1] == content
assert r3.number_of_rows() == 2
def test_empty_array_input(self):
"""Test empty array as input to Matrix"""
m = Matrix([])
assert m.number_of_columns() == 0
assert m.number_of_rows() == 0
def test_delete_a_slice(self):
"""Delete a slice"""
r2 = Matrix(self.data)
del r2.row[1:]
assert r2.number_of_rows() == 1
