Fix language specification

Old API docs claimed to require ISO 639-2 format, testing determines
that that ISO 639-1 is required instead.

tests/test_console.py

@@ -61,7 +61,7 @@ def test_post_with_options(mock_post, mock_uuid, capsys):
         '--sensitive',
         '--spoiler-text', 'Spoiler!',
         '--reply-to', '123a',
-        '--language', 'hrv',
+        '--language', 'hr',
     ]
 
     mock_post.return_value = MockResponse({
@@ -77,7 +77,7 @@ def test_post_with_options(mock_post, mock_uuid, capsys):
         'sensitive': True,
         'spoiler_text': "Spoiler!",
         'in_reply_to_id': '123a',
-        'language': 'hrv',
+        'language': 'hr',
     }, headers={"Idempotency-Key": "up-the-irons"})
 
     out, err = capsys.readouterr()

tests/test_integration.py

@@ -192,6 +192,18 @@ def test_post_scheduled_in(app, user, run):
         assert delta.total_seconds() < 5
 
 
+def test_post_language(app, user, run):
+    out = run("post", "test", "--language", "hr")
+    status_id = _posted_status_id(out)
+    status = api.fetch_status(app, user, status_id)
+    assert status["language"] == "hr"
+
+    out = run("post", "test", "--language", "zh")
+    status_id = _posted_status_id(out)
+    status = api.fetch_status(app, user, status_id)
+    assert status["language"] == "zh"
+
+
 def test_media_attachments(app, user, run):
     assets_dir = path.realpath(path.join(path.dirname(__file__), "assets"))
 

toot/console.py

@@ -17,10 +17,10 @@ VISIBILITY_CHOICES = ['public', 'unlisted', 'private', 'direct']
 
 def language(value):
     """Validates the language parameter"""
-    if len(value) != 3:
+    if len(value) != 2:
         raise ArgumentTypeError(
-            "Invalid language specified: '{}'. Expected a 3 letter "
-            "abbreviation according to ISO 639-2 standard.".format(value)
+            "Invalid language. Expected a 2 letter abbreviation according to "
+            "the ISO 639-1 standard."
         )
 
     return value