claudi
7daec731ca
- Introduced a new i18n module for managing translations using JSON files. - Added English (en.json) and French (fr.json) translation files for UI elements. - Implemented lazy initialization of the translator to load translations on demand. - Added unit tests for translation lookup, fallback behavior, and available languages detection.
60 lines
2.1 KiB
Python
60 lines
2.1 KiB
Python
"""Unit tests for i18n translation helper."""
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import json
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from pathlib import Path
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from webdrop_bridge.utils import i18n
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class TestI18n:
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"""Tests for translation lookup and fallback behavior."""
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def test_tr_lazy_initialization_uses_english_defaults(self):
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"""Translator should lazily initialize and resolve known keys."""
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# Force a fresh singleton state for this test.
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i18n._translator = i18n.Translator() # type: ignore[attr-defined]
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assert i18n.tr("settings.title") == "Settings"
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def test_initialize_with_language_falls_back_to_english(self, tmp_path: Path):
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"""Missing keys in selected language should fall back to English."""
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translations = tmp_path / "translations"
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translations.mkdir(parents=True, exist_ok=True)
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(translations / "en.json").write_text(
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json.dumps(
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{
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"greeting": "Hello {name}",
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"settings.title": "Settings",
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}
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),
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encoding="utf-8",
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)
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(translations / "de.json").write_text(
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json.dumps(
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{
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"settings.title": "Einstellungen",
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}
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),
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encoding="utf-8",
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)
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i18n._translator = i18n.Translator() # type: ignore[attr-defined]
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i18n.initialize("de", translations)
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assert i18n.tr("settings.title") == "Einstellungen"
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assert i18n.tr("greeting", name="Alex") == "Hello Alex"
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def test_get_available_languages_reads_translation_files(self, tmp_path: Path):
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"""Available languages should be discovered from JSON files."""
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translations = tmp_path / "translations"
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translations.mkdir(parents=True, exist_ok=True)
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(translations / "en.json").write_text("{}", encoding="utf-8")
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(translations / "fr.json").write_text("{}", encoding="utf-8")
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i18n._translator = i18n.Translator() # type: ignore[attr-defined]
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i18n.initialize("en", translations)
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available = i18n.get_available_languages()
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assert "en" in available
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assert "fr" in available
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