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|
from __future__ import annotations
import pytest
from charset_normalizer import CharsetMatch
from charset_normalizer.utils import any_specified_encoding
@pytest.mark.parametrize(
"payload, expected_encoding",
[
(b'<?xml version="1.0" encoding="EUC-JP"?>', "euc_jp"),
(b'<html><head><meta charset="utf-8"></head></html>', "utf_8"),
(b'<html><head><meta charset="utf-57"></head></html>', None),
(b"# coding: utf-8", "utf_8"),
(b'<?xml version="1.0" encoding="UTF-8"?>', "utf_8"),
(b'<?xml version="1.0" encoding="US-ASCII"?>', "ascii"),
(b'<?xml version="1.0" encoding="JohaB"?>', "johab"),
(b'<?xml version="1.0" encoding="ibm037"?>', "cp037"),
(b"<html><head><meta charset=WINDOWS-1252></head></html>", "cp1252"),
(b'<html><head><meta charset="WINDOWS-1256"></head></html>', "cp1256"),
],
)
def test_detect_most_common_body_encoding(payload, expected_encoding):
specified_encoding = any_specified_encoding(payload)
assert (
specified_encoding == expected_encoding
), "Unable to determine properly encoding from given body"
@pytest.mark.parametrize(
"payload, expected_outcome",
[
(
b'<?xml version="1.0" encoding="EUC-JP"?>',
b'<?xml version="1.0" encoding="utf-8"?>',
),
(
b'<html><head><meta charset="utf-8"></head></html>',
b'<html><head><meta charset="utf-8"></head></html>',
),
(
b'<html><head><meta charset="utf-57"></head></html>',
b'<html><head><meta charset="utf-57"></head></html>',
),
(b"# coding: utf-8", b"# coding: utf-8"),
(
b'<?xml version="1.0" encoding="UTF-8"?>',
b'<?xml version="1.0" encoding="UTF-8"?>',
),
(
b'<?xml version="1.0" encoding="US-ASCII"?>',
b'<?xml version="1.0" encoding="utf-8"?>',
),
(
b'<?xml version="1.0" encoding="JohaB"?>',
b'<?xml version="1.0" encoding="utf-8"?>',
),
(
b"<html><head><meta charset=WINDOWS-1252></head></html>",
b"<html><head><meta charset=utf-8></head></html>",
),
(
b'<html><head><meta charset="WINDOWS-1256"></head></html>',
b'<html><head><meta charset="utf-8"></head></html>',
),
],
)
def test_preemptive_mark_replacement(payload, expected_outcome):
"""
When generating (to Unicode converted) bytes, we want to change any potential declarative charset
to utf-8. This test that.
"""
specified_encoding = any_specified_encoding(payload)
detected_encoding = (
specified_encoding if specified_encoding is not None else "utf-8"
)
m = CharsetMatch(
payload,
detected_encoding,
0.0,
False,
[],
preemptive_declaration=specified_encoding,
)
transformed_output = m.output()
assert transformed_output == expected_outcome
|
