Add tests and fix Byte/Bytes localisation

Author: hugovk

src/humanize/filesize.py

@@ -91,10 +91,10 @@ def naturalsize(
     abs_bytes = abs(bytes_)
 
     if abs_bytes == 1 and not gnu:
-        return f"{int(bytes_)} Byte"
+        return _("%d Byte") % int(bytes_)
 
     if abs_bytes < base:
-        return f"{int(bytes_)}B" if gnu else f"{int(bytes_)} Bytes"
+        return f"{int(bytes_)}B" if gnu else _("%d Bytes") % int(bytes_)
 
     exp = int(min(log(abs_bytes, base), len(suffix)))
     space = "" if gnu else " "

src/humanize/locale/fr_FR/LC_MESSAGES/humanize.po

@@ -365,11 +365,13 @@ msgid "%s and %s"
 msgstr "%s et %s"
 
 # --- filesize units (naturalsize) ---
-msgid "Byte"
-msgstr "octet"
+#, python-format
+msgid "%d Byte"
+msgstr "%d octet"
 
-msgid "Bytes"
-msgstr "octets"
+#, python-format
+msgid "%d Bytes"
+msgstr "%d octets"
 
 msgid "kB"
 msgstr "Ko"

tests/test_i18n.py

@@ -157,6 +157,39 @@ def test_intword_i18n(locale: str, number: int, expected_result: str) -> None:
         humanize.i18n.deactivate()
 
 
+@pytest.mark.parametrize(
+    "locale, value, expected_result",
+    [
+        ("fr_FR", 1, "1 octet"),
+        ("fr_FR", 42, "42 octets"),
+        ("fr_FR", 42_000, "42.0 Ko"),
+        ("fr_FR", 42_000_000, "42.0 Mo"),
+        ("fr_FR", 42_000_000_000, "42.0 Go"),
+        ("fr_FR", -42_000, "-42.0 Ko"),
+    ],
+)
+def test_naturalsize_i18n(locale: str, value: float, expected_result: str) -> None:
+    try:
+        humanize.i18n.activate(locale)
+    except FileNotFoundError:
+        pytest.skip("Generate .mo with scripts/generate-translation-binaries.sh")
+    else:
+        assert humanize.naturalsize(value) == expected_result
+    finally:
+        humanize.i18n.deactivate()
+
+
+def test_naturalsize_i18n_binary() -> None:
+    try:
+        humanize.i18n.activate("fr_FR")
+    except FileNotFoundError:
+        pytest.skip("Generate .mo with scripts/generate-translation-binaries.sh")
+    else:
+        assert humanize.naturalsize(3000, binary=True) == "2.9 Kio"
+    finally:
+        humanize.i18n.deactivate()
+
+
 @pytest.mark.parametrize(
     "locale, expected_result",
     [