Add some simple tests for language naming

tests/test_translations.py

@@ -0,0 +1,176 @@
+import os
+from pathlib import Path
+
+import pytest
+
+
+BASEDIR = Path(__file__).parent.parent
+TRANSLATIONS_BASE = BASEDIR / "resources" / "language"
+
+TRANSLATION_DIRS = os.listdir(TRANSLATIONS_BASE)
+
+KNOWN_KODI_LANGUAGE_CODES = {
+    "en_gb",  # Base language
+    "es_es",
+    "ta_in",
+    "fr_ca",
+    "en_nz",
+    "eo",
+    "fa_ir",
+    "szl",
+    "nb_no",
+    "vi_vn",
+    "sk_sk",
+    "mn_mn",
+    "ru_ru",
+    "fi_fi",
+    "nl_nl",
+    "lv_lv",
+    "hi_in",
+    "pt_pt",
+    "de_de",
+    "it_it",
+    "ja_jp",
+    "ms_my",
+    "sr_rs@latin",
+    "is_is",
+    "pl_pl",
+    "fo_fo",
+    "si_lk",
+    "es_mx",
+    "hu_hu",
+    "pt_br",
+    "en_us",
+    "ar_sa",
+    "tg_tj",
+    "el_gr",
+    "ast_es",
+    "es_ar",
+    "be_by",
+    "af_za",
+    "sv_se",
+    "am_et",
+    "my_mm",
+    "fr_fr",
+    "sq_al",
+    "et_ee",
+    "ga_ie",
+    "ko_kr",
+    "id_id",
+    "gl_es",
+    "bg_bg",
+    "cs_cz",
+    "eu_es",
+    "fa_af",
+    "ro_ro",
+    "th_th",
+    "zh_tw",
+    "mi",
+    "mt_mt",
+    "ml_in",
+    "uk_ua",
+    "da_dk",
+    "cy_gb",
+    "az_az",
+    "he_il",
+    "kn_in",
+    "zh_cn",
+    "hy_am",
+    "te_in",
+    "hr_hr",
+    "ca_es",
+    "tr_tr",
+    "bs_ba",
+    "sr_rs",
+    "uz_uz",
+    "lt_lt",
+    "os_os",
+    "fil",
+    "sl_si",
+    "en_au",
+    "mk_mk",
+}
+
+ADDITIONAL_LANGUAGE_EXCEPTIONS = {
+    "es_419",  # Spanish, Latin America
+}
+
+
+@pytest.mark.parametrize(
+    "dir",
+    TRANSLATION_DIRS,
+)
+def test_langcode_lower(dir: str):
+    _, code = dir.rsplit(".", 1)
+    assert code.islower()
+
+
+@pytest.mark.parametrize(
+    "dir",
+    TRANSLATION_DIRS,
+)
+def test_langcode_country(dir: str):
+    _, code = dir.rsplit(".", 1)
+
+    if (
+        code not in KNOWN_KODI_LANGUAGE_CODES
+        and code not in ADDITIONAL_LANGUAGE_EXCEPTIONS
+    ):
+        for c in KNOWN_KODI_LANGUAGE_CODES:
+            if code in c:
+                print(f"Maybe {code} should be {c}?")
+
+        assert len(code) == 5
+        assert "_" in code
+        lang, country = code.split("_", 1)
+        assert lang.isalpha()
+        assert country.isalpha()
+
+
+def parse_language_headers(file):
+    with open(file, "rt") as fh:
+        sections = {}
+        section = None
+        for line in fh:
+            line = line.strip()
+            if not line:
+                break
+
+            if line[0] == "#":
+                continue
+            elif line[0] == '"':
+                sections[section].append(line)
+            else:
+                section, value = line.split(None, 1)
+                sections[section] = [value]
+
+        for section in sections.keys():
+            sections[section] = "".join(
+                [
+                    x[1:-1].replace('\\"', '"').replace("\\n", "\n")
+                    for x in sections[section]
+                ]
+            )
+
+        d = {"file": file}
+        for line in sections["msgstr"].split("\n"):
+            line = line.strip()
+            if not line:
+                continue
+            key, value = line.split(":", 1)
+            d[key] = value.strip()
+
+        return d
+
+
+@pytest.mark.parametrize(
+    "dir",
+    TRANSLATION_DIRS,
+)
+def test_langcode_matches(dir: str):
+    _, code = dir.rsplit(".", 1)
+
+    headers = parse_language_headers(TRANSLATIONS_BASE / dir / "strings.po")
+
+    assert "Language" in headers
+    assert headers["Language"] == code