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devx/tests/unit/test_i18n.py
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emilandemo 3d4b4940ff
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DEVX-153: feat: sync missing features from v0.49.x line to master
Co-authored-by: emil User <emil.simeonov@tutanota.com>
2026-08-09 01:09:20 +00:00

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Python

"""Unit tests for devx.i18n."""
from __future__ import annotations
import pytest
import devx.i18n as i18n_mod
from devx.i18n import _, configure_i18n
class TestTranslate:
def test_returns_english_by_default(self) -> None:
with pytest.MonkeyPatch().context() as mp:
mp.delenv("DEVX_LANG", raising=False)
assert _("Running tests") == "Running tests"
def test_returns_key_when_missing(self) -> None:
with pytest.MonkeyPatch().context() as mp:
mp.delenv("DEVX_LANG", raising=False)
assert _("nonexistent.key.xyz") == "nonexistent.key.xyz"
def test_formats_kwargs(self) -> None:
# Find a key with format placeholders
for key, translations in i18n_mod.TRANSLATIONS.items():
en = translations.get("en", "")
if "{" in en:
with pytest.MonkeyPatch().context() as mp:
mp.delenv("DEVX_LANG", raising=False)
result = _(key, **dict.fromkeys(_extract_format_keys(en), "x"))
assert "{" not in result
return
pytest.skip("No key with format placeholders found")
def test_invalid_lang_falls_back_to_english(self) -> None:
with pytest.MonkeyPatch().context() as mp:
mp.setenv("DEVX_LANG", "fr")
assert _("Running tests") == "Running tests"
def test_bulgarian_translation(self) -> None:
with pytest.MonkeyPatch().context() as mp:
mp.setenv("DEVX_LANG", "bg")
# Find a key that has a Bulgarian translation
for key, translations in i18n_mod.TRANSLATIONS.items():
if "bg" in translations:
result = _(key)
assert result == translations["bg"]
return
pytest.skip("No Bulgarian translation found")
class TestConfigureI18n:
def test_custom_lang_env_var(self) -> None:
configure_i18n(lang_env_var="GRM_LANG")
try:
with pytest.MonkeyPatch().context() as mp:
mp.setenv("GRM_LANG", "bg")
mp.delenv("DEVX_LANG", raising=False)
# Find a key with Bulgarian translation
for key, translations in i18n_mod.TRANSLATIONS.items():
if "bg" in translations:
assert _(key) == translations["bg"]
return
pytest.skip("No Bulgarian translation found")
finally:
configure_i18n() # Reset to defaults
def test_custom_translations_path_env_var(self, tmp_path) -> None:
custom_translations = {"custom.key": {"en": "Custom Value", "bg": "Персонализирано"}}
custom_file = tmp_path / "custom.json"
custom_file.write_text(__import__("json").dumps(custom_translations))
configure_i18n(translations_path_env_var="GRM_TRANSLATIONS_PATH")
try:
# Use i18n_mod.TRANSLATIONS (not a stale import) — other tests
# may call importlib.reload(devx.i18n), replacing the dict object.
translations = i18n_mod.TRANSLATIONS
original = dict(translations)
translations.update(custom_translations)
try:
with pytest.MonkeyPatch().context() as mp:
mp.setenv("GRM_TRANSLATIONS_PATH", str(custom_file))
assert _("custom.key") == "Custom Value"
finally:
translations.clear()
translations.update(original)
finally:
configure_i18n() # Reset to defaults
def test_reset_to_defaults(self) -> None:
configure_i18n(lang_env_var="GRM_LANG")
configure_i18n() # Reset
assert i18n_mod._lang_env_var == "DEVX_LANG"
assert i18n_mod._translations_path_env_var == "DEVX_TRANSLATIONS_PATH"
def _extract_format_keys(template: str) -> list[str]:
"""Extract {key} format placeholders from a template string."""
import re
return re.findall(r"\{(\w+)\}", template)