Test gen

src/tyro/extras/_base_configs.py

@@ -1,6 +1,7 @@
 from typing import Any, Mapping, Optional, Sequence, Tuple, TypeVar, Union
 
 from typing_extensions import Annotated
+
 from tyro.conf._markers import Suppress
 
 from .._typing import TypeForm

src/tyro/extras/_subcommand_cli_from_dict.py

@@ -1,6 +1,7 @@
 from typing import Any, Callable, Dict, Optional, Sequence, TypeVar, Union, overload
 
 from typing_extensions import Annotated
+
 from tyro.conf._markers import Marker, Suppress
 
 from .._cli import cli

tests/test_py311_generated/test_base_configs_nested_exclude_py313_generated.py

@@ -1,6 +1,7 @@
 from dataclasses import dataclass
 from typing import TYPE_CHECKING, Callable, Literal, Tuple
 
+from helptext_utils import get_helptext_with_checks
 from torch import nn
 
 import tyro
@@ -89,6 +90,7 @@ class ExperimentConfig:
         ),
     },
     prefix_names=False,  # Omit prefixes in subcommands themselves.
+    sort_subcommands=True,  # Sort subcommands alphabetically.
 )
 
 
@@ -120,6 +122,10 @@ class BaseConfig:
     data_config: AnnotatedDataParserUnion = DataConfig(test=0)
 
 
+def test_sorted_alphabetically() -> None:
+    assert "{big,small}" in get_helptext_with_checks(ExperimentConfigDataParserUnion)
+
+
 def test_base_configs_nested() -> None:
     def main(cfg: BaseConfig) -> BaseConfig:
         return cfg
@@ -230,3 +236,17 @@ def test_overridable_config_helper():
         },
         args=["small-data", "--test", "100"],
     ) == DataConfig(100)
+
+
+def test_overridable_config_helper_single():
+    assert tyro.extras.overridable_config_cli(
+        {
+            "small-data": (
+                "Small data",
+                DataConfig(
+                    test=2221,
+                ),
+            ),
+        },
+        args=["small-data", "--test", "100"],
+    ) == DataConfig(100)