def test_trim_url_trailing_char_and_enclosing(trailing_char, left, right):
test_url = 'http://example.com/'
assert test_url == trim_url(test_url + right + trailing_char)
# assert the trailing char is kept if there is something else
test_url = 'http://example.com/' + trailing_char
assert test_url == trim_url(test_url + right)
def test_trim_url_remove_trailing_char(trailing_char):
test_url = 'http://example.com/'
assert trim_url(test_url + trailing_char) == test_url
# assert trailing_char removed only if it is trailing
test_url = 'http://example.com/' + trailing_char + 'content'
assert trim_url(test_url) == test_url
def test_trim_url_remove_trailing_enclosing(left, right):
# right without left => right is removed
test_url = 'http://example.com/'
assert test_url == trim_url(test_url + right)
# right after path without left => right is removed
test_url = 'http://example.com/a'
assert test_url == trim_url(test_url + right)
# trailing left without right => left is kept
test_url = 'http://example.com/a' + left
assert test_url == trim_url(test_url)
# left before content without right => left is kept
test_url = 'http://example.com/a' + left + 'something'
assert test_url == trim_url(test_url)
# left + content + right => right is kept
assert test_url + right == trim_url(test_url + right)