feat: simplify CLI feature (#23)

* chore: cleanup + add tests

* chore: remove graph and show fixtures commands

* feat: add async_command wrapper

pyproject.toml

@@ -59,7 +59,7 @@ dev = [
 ]
 
 [project.scripts]
-fastapi-toolsets = "fastapi_toolsets.cli:app"
+manager = "fastapi_toolsets.cli:cli"
 
 [build-system]
 requires = ["uv_build>=0.9.26,<0.10.0"]

src/fastapi_toolsets/cli/__init__.py

@@ -1,5 +1,6 @@
 """CLI for FastAPI projects."""
 
-from .app import app, register_command
+from .app import cli
+from .utils import async_command
 
-__all__ = ["app", "register_command"]
+__all__ = ["async_command", "cli"]

src/fastapi_toolsets/cli/app.py

@@ -1,97 +1,25 @@
 """Main CLI application."""
 
-import importlib.util
-import sys
-from pathlib import Path
-from typing import Annotated
-
 import typer
 
-from .commands import fixtures
+from .config import load_config
 
-app = typer.Typer(
-    name="fastapi-utils",
+cli = typer.Typer(
+    name="manager",
     help="CLI utilities for FastAPI projects.",
     no_args_is_help=True,
 )
 
-# Register built-in commands
-app.add_typer(fixtures.app, name="fixtures")
+_config = load_config()
+
+if _config.fixtures:
+    from .commands.fixtures import fixture_cli
+
+    cli.add_typer(fixture_cli, name="fixtures")
 
 
-def register_command(command: typer.Typer, name: str) -> None:
-    """Register a custom command group.
-
-    Args:
-        command: Typer app for the command group
-        name: Name for the command group
-
-    Example:
-        # In your project's cli.py:
-        import typer
-        from fastapi_toolsets.cli import app, register_command
-
-        my_commands = typer.Typer()
-
-        @my_commands.command()
-        def seed():
-            '''Seed the database.'''
-            ...
-
-        register_command(my_commands, "db")
-        # Now available as: fastapi-utils db seed
-    """
-    app.add_typer(command, name=name)
-
-
-@app.callback()
-def main(
-    ctx: typer.Context,
-    config: Annotated[
-        Path | None,
-        typer.Option(
-            "--config",
-            "-c",
-            help="Path to project config file (Python module with fixtures registry).",
-            envvar="FASTAPI_TOOLSETS_CONFIG",
-        ),
-    ] = None,
-) -> None:
+@cli.callback()
+def main(ctx: typer.Context) -> None:
     """FastAPI utilities CLI."""
     ctx.ensure_object(dict)
-
-    if config:
-        ctx.obj["config_path"] = config
-        # Load the config module
-        config_module = _load_module_from_path(config)
-        ctx.obj["config_module"] = config_module
-
-
-def _load_module_from_path(path: Path) -> object:
-    """Load a Python module from a file path.
-
-    Handles both absolute and relative imports by adding the config's
-    parent directory to sys.path temporarily.
-    """
-    path = path.resolve()
-
-    # Add the parent directory to sys.path to support relative imports
-    parent_dir = str(
-        path.parent.parent
-    )  # Go up two levels (e.g., from app/cli_config.py to project root)
-    if parent_dir not in sys.path:
-        sys.path.insert(0, parent_dir)
-
-    # Also add immediate parent for direct module imports
-    immediate_parent = str(path.parent)
-    if immediate_parent not in sys.path:
-        sys.path.insert(0, immediate_parent)
-
-    spec = importlib.util.spec_from_file_location("config", path)
-    if spec is None or spec.loader is None:
-        raise typer.BadParameter(f"Cannot load module from {path}")
-
-    module = importlib.util.module_from_spec(spec)
-    sys.modules["config"] = module
-    spec.loader.exec_module(module)
-    return module
+    ctx.obj["config"] = _config

src/fastapi_toolsets/cli/commands/fixtures.py

@@ -1,55 +1,29 @@
 """Fixture management commands."""
 
-import asyncio
 from typing import Annotated
 
 import typer
+from rich.console import Console
+from rich.table import Table
 
-from ...fixtures import Context, FixtureRegistry, LoadStrategy, load_fixtures_by_context
+from ...fixtures import Context, LoadStrategy, load_fixtures_by_context
+from ..config import CliConfig
+from ..utils import async_command
 
-app = typer.Typer(
+fixture_cli = typer.Typer(
     name="fixtures",
     help="Manage database fixtures.",
     no_args_is_help=True,
 )
+console = Console()
 
 
-def _get_registry(ctx: typer.Context) -> FixtureRegistry:
-    """Get fixture registry from context."""
-    config = ctx.obj.get("config_module") if ctx.obj else None
-    if config is None:
-        raise typer.BadParameter(
-            "No config provided. Use --config to specify a config file with a 'fixtures' registry."
-        )
-
-    registry = getattr(config, "fixtures", None)
-    if registry is None:
-        raise typer.BadParameter(
-            "Config module must have a 'fixtures' attribute (FixtureRegistry instance)."
-        )
-
-    if not isinstance(registry, FixtureRegistry):
-        raise typer.BadParameter(
-            f"'fixtures' must be a FixtureRegistry instance, got {type(registry).__name__}"
-        )
-
-    return registry
+def _get_config(ctx: typer.Context) -> CliConfig:
+    """Get CLI config from context."""
+    return ctx.obj["config"]
 
 
-def _get_db_context(ctx: typer.Context):
-    """Get database context manager from config."""
-    config = ctx.obj.get("config_module") if ctx.obj else None
-    if config is None:
-        raise typer.BadParameter("No config provided.")
-
-    get_db_context = getattr(config, "get_db_context", None)
-    if get_db_context is None:
-        raise typer.BadParameter("Config module must have a 'get_db_context' function.")
-
-    return get_db_context
-
-
-@app.command("list")
+@fixture_cli.command("list")
 def list_fixtures(
     ctx: typer.Context,
     context: Annotated[
@@ -62,64 +36,28 @@ def list_fixtures(
     ] = None,
 ) -> None:
     """List all registered fixtures."""
-    registry = _get_registry(ctx)
-
-    if context:
-        fixtures = registry.get_by_context(context)
-    else:
-        fixtures = registry.get_all()
+    config = _get_config(ctx)
+    registry = config.get_fixtures_registry()
+    fixtures = registry.get_by_context(context) if context else registry.get_all()
 
     if not fixtures:
-        typer.echo("No fixtures found.")
+        print("No fixtures found.")
         return
 
-    typer.echo(f"\n{'Name':<30} {'Contexts':<30} {'Dependencies'}")
-    typer.echo("-" * 80)
+    table = Table("Name", "Contexts", "Dependencies")
 
     for fixture in fixtures:
         contexts = ", ".join(fixture.contexts)
         deps = ", ".join(fixture.depends_on) if fixture.depends_on else "-"
-        typer.echo(f"{fixture.name:<30} {contexts:<30} {deps}")
+        table.add_row(fixture.name, contexts, deps)
 
-    typer.echo(f"\nTotal: {len(fixtures)} fixture(s)")
+    console.print(table)
+    print(f"\nTotal: {len(fixtures)} fixture(s)")
 
 
-@app.command("graph")
-def show_graph(
-    ctx: typer.Context,
-    fixture_name: Annotated[
-        str | None,
-        typer.Argument(help="Show dependencies for a specific fixture."),
-    ] = None,
-) -> None:
-    """Show fixture dependency graph."""
-    registry = _get_registry(ctx)
-
-    if fixture_name:
-        try:
-            order = registry.resolve_dependencies(fixture_name)
-            typer.echo(f"\nDependency chain for '{fixture_name}':\n")
-            for i, name in enumerate(order):
-                indent = "  " * i
-                arrow = "└─> " if i > 0 else ""
-                typer.echo(f"{indent}{arrow}{name}")
-        except KeyError:
-            typer.echo(f"Fixture '{fixture_name}' not found.", err=True)
-            raise typer.Exit(1)
-    else:
-        # Show full graph
-        fixtures = registry.get_all()
-
-        typer.echo("\nFixture Dependency Graph:\n")
-        for fixture in fixtures:
-            deps = (
-                f" -> [{', '.join(fixture.depends_on)}]" if fixture.depends_on else ""
-            )
-            typer.echo(f"  {fixture.name}{deps}")
-
-
-@app.command("load")
-def load(
+@fixture_cli.command("load")
+@async_command
+async def load(
     ctx: typer.Context,
     contexts: Annotated[
         list[str] | None,
@@ -141,16 +79,12 @@ def load(
     ] = False,
 ) -> None:
     """Load fixtures into the database."""
-    registry = _get_registry(ctx)
-    get_db_context = _get_db_context(ctx)
+    config = _get_config(ctx)
+    registry = config.get_fixtures_registry()
+    get_db_context = config.get_db_context()
 
-    # Parse contexts
-    if contexts:
-        context_list = contexts
-    else:
-        context_list = [Context.BASE]
+    context_list = contexts if contexts else [Context.BASE]
 
-    # Parse strategy
     try:
         load_strategy = LoadStrategy(strategy)
     except ValueError:
@@ -159,67 +93,27 @@ def load(
         )
         raise typer.Exit(1)
 
-    # Resolve what will be loaded
     ordered = registry.resolve_context_dependencies(*context_list)
 
     if not ordered:
-        typer.echo("No fixtures to load for the specified context(s).")
+        print("No fixtures to load for the specified context(s).")
         return
 
-    typer.echo(f"\nFixtures to load ({load_strategy.value} strategy):")
+    print(f"\nFixtures to load ({load_strategy.value} strategy):")
     for name in ordered:
         fixture = registry.get(name)
         instances = list(fixture.func())
         model_name = type(instances[0]).__name__ if instances else "?"
-        typer.echo(f"  - {name}: {len(instances)} {model_name}(s)")
+        print(f"  - {name}: {len(instances)} {model_name}(s)")
 
     if dry_run:
-        typer.echo("\n[Dry run - no changes made]")
+        print("\n[Dry run - no changes made]")
         return
 
-    typer.echo("\nLoading...")
-
-    async def do_load():
     async with get_db_context() as session:
         result = await load_fixtures_by_context(
             session, registry, *context_list, strategy=load_strategy
         )
-            return result
-
-    result = asyncio.run(do_load())
 
     total = sum(len(items) for items in result.values())
-    typer.echo(f"\nLoaded {total} record(s) successfully.")
-
-
-@app.command("show")
-def show_fixture(
-    ctx: typer.Context,
-    name: Annotated[str, typer.Argument(help="Fixture name to show.")],
-) -> None:
-    """Show details of a specific fixture."""
-    registry = _get_registry(ctx)
-
-    try:
-        fixture = registry.get(name)
-    except KeyError:
-        typer.echo(f"Fixture '{name}' not found.", err=True)
-        raise typer.Exit(1)
-
-    typer.echo(f"\nFixture: {fixture.name}")
-    typer.echo(f"Contexts: {', '.join(fixture.contexts)}")
-    typer.echo(
-        f"Dependencies: {', '.join(fixture.depends_on) if fixture.depends_on else 'None'}"
-    )
-
-    # Show instances
-    instances = list(fixture.func())
-    if instances:
-        model_name = type(instances[0]).__name__
-        typer.echo(f"\nInstances ({len(instances)} {model_name}):")
-        for instance in instances[:10]:  # Limit to 10
-            typer.echo(f"  - {instance!r}")
-        if len(instances) > 10:
-            typer.echo(f"  ... and {len(instances) - 10} more")
-    else:
-        typer.echo("\nNo instances (empty fixture)")
+    print(f"\nLoaded {total} record(s) successfully.")

src/fastapi_toolsets/cli/config.py

@@ -0,0 +1,92 @@
+"""CLI configuration."""
+
+import importlib
+import sys
+import tomllib
+from dataclasses import dataclass
+from pathlib import Path
+
+import typer
+
+
+@dataclass
+class CliConfig:
+    """CLI configuration loaded from pyproject.toml."""
+
+    fixtures: str | None = None
+    db_context: str | None = None
+
+    def get_fixtures_registry(self):
+        """Import and return the fixtures registry."""
+        from ..fixtures import FixtureRegistry
+
+        if not self.fixtures:
+            raise typer.BadParameter(
+                "No fixtures registry configured. "
+                "Add 'fixtures' to [tool.fastapi-toolsets] in pyproject.toml."
+            )
+
+        registry = _import_from_string(self.fixtures)
+
+        if not isinstance(registry, FixtureRegistry):
+            raise typer.BadParameter(
+                f"'fixtures' must be a FixtureRegistry instance, got {type(registry).__name__}"
+            )
+
+        return registry
+
+    def get_db_context(self):
+        """Import and return the db_context function."""
+        if not self.db_context:
+            raise typer.BadParameter(
+                "No db_context configured. "
+                "Add 'db_context' to [tool.fastapi-toolsets] in pyproject.toml."
+            )
+        return _import_from_string(self.db_context)
+
+
+def _import_from_string(import_path: str):
+    """Import an object from a string path like 'module.submodule:attribute'."""
+    if ":" not in import_path:
+        raise typer.BadParameter(
+            f"Invalid import path '{import_path}'. Expected format: 'module:attribute'"
+        )
+
+    module_path, attr_name = import_path.rsplit(":", 1)
+
+    # Add cwd to sys.path for local imports
+    cwd = str(Path.cwd())
+    if cwd not in sys.path:
+        sys.path.insert(0, cwd)
+
+    try:
+        module = importlib.import_module(module_path)
+    except ImportError as e:
+        raise typer.BadParameter(f"Cannot import module '{module_path}': {e}")
+
+    if not hasattr(module, attr_name):
+        raise typer.BadParameter(
+            f"Module '{module_path}' has no attribute '{attr_name}'"
+        )
+
+    return getattr(module, attr_name)
+
+
+def load_config() -> CliConfig:
+    """Load CLI configuration from pyproject.toml."""
+    pyproject_path = Path.cwd() / "pyproject.toml"
+
+    if not pyproject_path.exists():
+        return CliConfig()
+
+    try:
+        with open(pyproject_path, "rb") as f:
+            data = tomllib.load(f)
+
+        tool_config = data.get("tool", {}).get("fastapi-toolsets", {})
+        return CliConfig(
+            fixtures=tool_config.get("fixtures"),
+            db_context=tool_config.get("db_context"),
+        )
+    except Exception:
+        return CliConfig()

src/fastapi_toolsets/cli/utils.py

@@ -0,0 +1,27 @@
+"""CLI utility functions."""
+
+import asyncio
+import functools
+from collections.abc import Callable, Coroutine
+from typing import Any, ParamSpec, TypeVar
+
+P = ParamSpec("P")
+T = TypeVar("T")
+
+
+def async_command(func: Callable[P, Coroutine[Any, Any, T]]) -> Callable[P, T]:
+    """Decorator to run an async function as a sync CLI command.
+
+    Example:
+        @fixture_cli.command("load")
+        @async_command
+        async def load(ctx: typer.Context) -> None:
+            async with get_db_context() as session:
+                await load_fixtures(session, registry)
+    """
+
+    @functools.wraps(func)
+    def wrapper(*args: P.args, **kwargs: P.kwargs) -> T:
+        return asyncio.run(func(*args, **kwargs))
+
+    return wrapper

tests/test_cli.py

@@ -0,0 +1,322 @@
+"""Tests for fastapi_toolsets.cli module."""
+
+import sys
+
+import pytest
+from typer.testing import CliRunner
+
+from fastapi_toolsets.cli.config import CliConfig, _import_from_string, load_config
+from fastapi_toolsets.cli.utils import async_command
+from fastapi_toolsets.fixtures import FixtureRegistry
+
+runner = CliRunner()
+
+
+class TestCliConfig:
+    """Tests for CliConfig dataclass."""
+
+    def test_default_values(self):
+        """Config has None defaults."""
+        config = CliConfig()
+        assert config.fixtures is None
+        assert config.db_context is None
+
+    def test_with_values(self):
+        """Config stores provided values."""
+        config = CliConfig(
+            fixtures="app.fixtures:registry",
+            db_context="app.db:get_session",
+        )
+        assert config.fixtures == "app.fixtures:registry"
+        assert config.db_context == "app.db:get_session"
+
+    def test_get_fixtures_registry_without_config(self):
+        """get_fixtures_registry raises error when not configured."""
+        config = CliConfig()
+        with pytest.raises(Exception) as exc_info:
+            config.get_fixtures_registry()
+        assert "No fixtures registry configured" in str(exc_info.value)
+
+    def test_get_db_context_without_config(self):
+        """get_db_context raises error when not configured."""
+        config = CliConfig()
+        with pytest.raises(Exception) as exc_info:
+            config.get_db_context()
+        assert "No db_context configured" in str(exc_info.value)
+
+
+class TestImportFromString:
+    """Tests for _import_from_string function."""
+
+    def test_import_valid_path(self):
+        """Import valid module:attribute path."""
+        result = _import_from_string("fastapi_toolsets.fixtures:FixtureRegistry")
+        assert result is FixtureRegistry
+
+    def test_import_without_colon_raises_error(self):
+        """Import path without colon raises error."""
+        with pytest.raises(Exception) as exc_info:
+            _import_from_string("fastapi_toolsets.fixtures.FixtureRegistry")
+        assert "Expected format: 'module:attribute'" in str(exc_info.value)
+
+    def test_import_nonexistent_module_raises_error(self):
+        """Import nonexistent module raises error."""
+        with pytest.raises(Exception) as exc_info:
+            _import_from_string("nonexistent.module:something")
+        assert "Cannot import module" in str(exc_info.value)
+
+    def test_import_nonexistent_attribute_raises_error(self):
+        """Import nonexistent attribute raises error."""
+        with pytest.raises(Exception) as exc_info:
+            _import_from_string("fastapi_toolsets.fixtures:NonexistentClass")
+        assert "has no attribute" in str(exc_info.value)
+
+
+class TestLoadConfig:
+    """Tests for load_config function."""
+
+    def test_load_without_pyproject(self, tmp_path, monkeypatch):
+        """Returns empty config when no pyproject.toml exists."""
+        monkeypatch.chdir(tmp_path)
+        config = load_config()
+        assert config.fixtures is None
+        assert config.db_context is None
+
+    def test_load_without_tool_section(self, tmp_path, monkeypatch):
+        """Returns empty config when no [tool.fastapi-toolsets] section."""
+        pyproject = tmp_path / "pyproject.toml"
+        pyproject.write_text("[project]\nname = 'test'\n")
+        monkeypatch.chdir(tmp_path)
+
+        config = load_config()
+        assert config.fixtures is None
+        assert config.db_context is None
+
+    def test_load_with_fixtures_config(self, tmp_path, monkeypatch):
+        """Loads fixtures config from pyproject.toml."""
+        pyproject = tmp_path / "pyproject.toml"
+        pyproject.write_text(
+            '[tool.fastapi-toolsets]\nfixtures = "app.fixtures:registry"\n'
+        )
+        monkeypatch.chdir(tmp_path)
+
+        config = load_config()
+        assert config.fixtures == "app.fixtures:registry"
+        assert config.db_context is None
+
+    def test_load_with_full_config(self, tmp_path, monkeypatch):
+        """Loads full config from pyproject.toml."""
+        pyproject = tmp_path / "pyproject.toml"
+        pyproject.write_text(
+            "[tool.fastapi-toolsets]\n"
+            'fixtures = "app.fixtures:registry"\n'
+            'db_context = "app.db:get_session"\n'
+        )
+        monkeypatch.chdir(tmp_path)
+
+        config = load_config()
+        assert config.fixtures == "app.fixtures:registry"
+        assert config.db_context == "app.db:get_session"
+
+    def test_load_with_invalid_toml(self, tmp_path, monkeypatch):
+        """Returns empty config when pyproject.toml is invalid."""
+        pyproject = tmp_path / "pyproject.toml"
+        pyproject.write_text("invalid toml {{{")
+        monkeypatch.chdir(tmp_path)
+
+        config = load_config()
+        assert config.fixtures is None
+
+
+class TestCliApp:
+    """Tests for CLI application."""
+
+    def test_cli_import(self):
+        """CLI can be imported."""
+        from fastapi_toolsets.cli import cli
+
+        assert cli is not None
+
+    def test_cli_help(self, tmp_path, monkeypatch):
+        """CLI shows help without fixtures."""
+        monkeypatch.chdir(tmp_path)
+
+        # Need to reload the module to pick up new cwd
+        import importlib
+
+        from fastapi_toolsets.cli import app
+
+        importlib.reload(app)
+
+        result = runner.invoke(app.cli, ["--help"])
+        assert result.exit_code == 0
+        assert "CLI utilities for FastAPI projects" in result.output
+
+
+class TestFixturesCli:
+    """Tests for fixtures CLI commands."""
+
+    @pytest.fixture
+    def cli_env(self, tmp_path, monkeypatch):
+        """Set up CLI environment with fixtures config."""
+        # Create pyproject.toml
+        pyproject = tmp_path / "pyproject.toml"
+        pyproject.write_text(
+            "[tool.fastapi-toolsets]\n"
+            'fixtures = "fixtures:registry"\n'
+            'db_context = "db:get_session"\n'
+        )
+
+        # Create fixtures module
+        fixtures_file = tmp_path / "fixtures.py"
+        fixtures_file.write_text(
+            "from fastapi_toolsets.fixtures import FixtureRegistry, Context\n"
+            "\n"
+            "registry = FixtureRegistry()\n"
+            "\n"
+            "@registry.register(contexts=[Context.BASE])\n"
+            "def roles():\n"
+            '    return [{"id": 1, "name": "admin"}, {"id": 2, "name": "user"}]\n'
+            "\n"
+            '@registry.register(depends_on=["roles"], contexts=[Context.TESTING])\n'
+            "def users():\n"
+            '    return [{"id": 1, "name": "alice", "role_id": 1}]\n'
+        )
+
+        # Create db module
+        db_file = tmp_path / "db.py"
+        db_file.write_text(
+            "from contextlib import asynccontextmanager\n"
+            "\n"
+            "@asynccontextmanager\n"
+            "async def get_session():\n"
+            "    yield None\n"
+        )
+
+        monkeypatch.chdir(tmp_path)
+
+        # Add tmp_path to sys.path for imports
+        if str(tmp_path) not in sys.path:
+            sys.path.insert(0, str(tmp_path))
+
+        # Reload the CLI module to pick up new config
+        import importlib
+
+        from fastapi_toolsets.cli import app, config
+
+        importlib.reload(config)
+        importlib.reload(app)
+
+        yield tmp_path, app.cli
+
+        # Cleanup
+        if str(tmp_path) in sys.path:
+            sys.path.remove(str(tmp_path))
+
+    def test_fixtures_list(self, cli_env):
+        """fixtures list shows registered fixtures."""
+        tmp_path, cli = cli_env
+        result = runner.invoke(cli, ["fixtures", "list"])
+
+        assert result.exit_code == 0
+        assert "roles" in result.output
+        assert "users" in result.output
+        assert "Total: 2 fixture(s)" in result.output
+
+    def test_fixtures_list_with_context(self, cli_env):
+        """fixtures list --context filters by context."""
+        tmp_path, cli = cli_env
+        result = runner.invoke(cli, ["fixtures", "list", "--context", "base"])
+
+        assert result.exit_code == 0
+        assert "roles" in result.output
+        assert "users" not in result.output
+        assert "Total: 1 fixture(s)" in result.output
+
+    def test_fixtures_load_dry_run(self, cli_env):
+        """fixtures load --dry-run shows what would be loaded."""
+        tmp_path, cli = cli_env
+        result = runner.invoke(cli, ["fixtures", "load", "base", "--dry-run"])
+
+        assert result.exit_code == 0
+        assert "Fixtures to load" in result.output
+        assert "roles" in result.output
+        assert "[Dry run - no changes made]" in result.output
+
+    def test_fixtures_load_invalid_strategy(self, cli_env):
+        """fixtures load with invalid strategy shows error."""
+        tmp_path, cli = cli_env
+        result = runner.invoke(
+            cli, ["fixtures", "load", "base", "--strategy", "invalid"]
+        )
+
+        assert result.exit_code == 1
+        assert "Invalid strategy" in result.output
+
+
+class TestCliWithoutFixturesConfig:
+    """Tests for CLI when fixtures is not configured."""
+
+    def test_no_fixtures_command(self, tmp_path, monkeypatch):
+        """fixtures command is not available when not configured."""
+        # Create pyproject.toml without fixtures
+        pyproject = tmp_path / "pyproject.toml"
+        pyproject.write_text('[project]\nname = "test"\n')
+
+        monkeypatch.chdir(tmp_path)
+
+        # Reload the CLI module
+        import importlib
+
+        from fastapi_toolsets.cli import app, config
+
+        importlib.reload(config)
+        importlib.reload(app)
+
+        result = runner.invoke(app.cli, ["--help"])
+
+        assert result.exit_code == 0
+        assert "fixtures" not in result.output
+
+
+class TestAsyncCommand:
+    """Tests for async_command decorator."""
+
+    def test_async_command_runs_coroutine(self):
+        """async_command runs async function synchronously."""
+
+        @async_command
+        async def async_func(value: int) -> int:
+            return value * 2
+
+        result = async_func(21)
+        assert result == 42
+
+    def test_async_command_preserves_signature(self):
+        """async_command preserves function signature."""
+
+        @async_command
+        async def async_func(name: str, count: int = 1) -> str:
+            return f"{name} x {count}"
+
+        result = async_func("test", count=3)
+        assert result == "test x 3"
+
+    def test_async_command_preserves_docstring(self):
+        """async_command preserves function docstring."""
+
+        @async_command
+        async def async_func() -> None:
+            """This is a docstring."""
+            pass
+
+        assert async_func.__doc__ == """This is a docstring."""
+
+    def test_async_command_preserves_name(self):
+        """async_command preserves function name."""
+
+        @async_command
+        async def my_async_function() -> None:
+            pass
+
+        assert my_async_function.__name__ == "my_async_function"