def test_fix_reference_url_substitute_tilde():
url_string = 'www.example.com/\u223c'
result = utils.fix_reference_url(url_string)
expected = 'http://www.example.com/~'
assert expected == result
def test_fix_reference_url_add_http():
url_string = 'www.example.com/'
result = utils.fix_reference_url(url_string)
expected = 'http://www.example.com/'
assert expected == result
def test_fix_reference_url_change_bars_with_slashes():
url_string = 'http:||www.example.com|'
result = utils.fix_reference_url(url_string)
expected = 'http://www.example.com/'
assert expected == result