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New encode/decode_path_component functions

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ASGI cannot differentiate between / and %2F in a URL, so we need an
alternative scheme for encoding the names of tables that contain special
characters such as /

For background, see
    https://github.com/django/asgiref/issues/51#issuecomment-450603464

Some examples:

    "table/and/slashes" => "tableU+002FandU+002Fslashes"
    "~table" => "U+007Etable"
    "+bobcats!" => "U+002Bbobcats!"
    "U+007Etable" => "UU+002B007Etable"
This commit is contained in:
Simon Willison 2019-05-05 18:36:04 -04:00
commit 9fdb47ca95
2 changed files with 37 additions and 0 deletions
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16
tests/test_utils.py
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@ -381,3 +381,19 @@ def test_path_with_format(path, format, extra_qs, expected):
)
def test_format_bytes(bytes, expected):
assert expected == utils.format_bytes(bytes)
@pytest.mark.parametrize(
"name,expected",
[
("table", "table"),
("table/and/slashes", "tableU+002FandU+002Fslashes"),
("~table", "U+007Etable"),
("+bobcats!", "U+002Bbobcats!"),
("U+007Etable", "UU+002B007Etable"),
],
)
def test_encode_decode_path_component(name, expected):
encoded = utils.encode_path_component(name)
assert encoded == expected
assert name == utils.decode_path_component(encoded)