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import json
import os
import unittest
import precis_i18n.codec # noqa: F401
HERE = os.path.abspath(os.path.dirname(__file__))
GOLDEN_JSON = os.path.join(HERE, "golden.json")
UCD_VERSION = precis_i18n.get_profile("FreeFormClass").ucd.version
class TestGolden(unittest.TestCase):
def test_golden_json(self):
with open(GOLDEN_JSON, encoding="ascii") as input_file:
entries = json.load(input_file)
for entry in entries:
profile, input_, output, error = (
entry["profile"],
entry["input"],
entry["output"],
entry["error"],
)
if "unicode_version" in entry and UCD_VERSION < entry["unicode_version"]:
self.check_fails(profile, input_, output)
continue
if not error:
self.check_allow(profile, input_, output)
else:
self.check_disallow(profile, input_, error)
def check_allow(self, profile, input_, expected):
# print('check_allow', profile, input_)
try:
actual = input_.encode(profile).decode("utf-8")
except UnicodeEncodeError as ex:
print("%s: %r" % (input_, ex))
raise
self.assertEqual(actual, expected)
# Check that the profile encoding is idempotent. If the following
# assertion fails, the profile is not idempotent.
idempotent = actual.encode(profile).decode("utf-8")
if idempotent != actual:
print(
'\n"%s" not idempotent: "%s" => "%s" => "%s"'
% (profile, _escape(input_), _escape(actual), _escape(idempotent))
)
self.assertEqual(idempotent, actual)
def check_disallow(self, profile, input_, expected):
# print('check_disallow', profile, input_)
with self.assertRaisesRegex(UnicodeEncodeError, expected):
input_.encode(profile)
def check_fails(self, profile, input_, expected):
"""Check that output doesn't match or raises UnicodeEncodeError.
This is used when the Unicode version is too low."""
try:
actual = input_.encode(profile).decode("utf-8")
except UnicodeEncodeError:
actual = None
self.assertNotEqual(actual, expected)
def _escape(s):
return s.encode("unicode_escape").decode("ascii")
if __name__ == "__main__":
unittest.main(verbosity=2)
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