Well, 95% test coverage is okay I guess

tests/test_strings.py

@@ -0,0 +1,7 @@
+from bouquin import strings
+
+
+def test_load_strings_uses_system_locale_and_fallback():
+    # pass a bogus locale to trigger fallback-to-default
+    strings.load_strings("zz")
+    assert strings._("next")  # key exists in base translations