def test_strip_whitespace_lines_not_strip_no_whitespace_lines(self):
"""
The strip_empty_lines() function should not remove any other adjacent
lines except whitespace lines.
"""
s = 'lorem ipsum\nlorem ipsum'
self.assertEqual(utils.strip_whitespace_lines(s), s)
def test_strip_whitespace_lines_strips_whitespace(self):
"""
The strip_empty_lines() function should remove all empty lines from
end and begging and any adjacent whitespace lines inside.
"""
s1 = ' \t\n\n\t \tsome identation here\n\n\n\nlorem ipsum\n\n'
s2 = '\t \tsome identation here\n\nlorem ipsum'
self.assertEqual(utils.strip_whitespace_lines(s1), s2)