feat: auto-discover runners (#12)

tests/test_engine_discovery.py

@@ -0,0 +1,39 @@
+from typing import cast
+
+import click
+import typer
+
+from takopi import cli, engines
+
+
+def test_engine_discovery_skips_non_backend() -> None:
+    ids = engines.list_backend_ids()
+    assert "codex" in ids
+    assert "claude" in ids
+    assert "mock" not in ids
+
+
+def test_cli_registers_engine_commands_sorted() -> None:
+    command_names = [cmd.name for cmd in cli.app.registered_commands]
+    engine_ids = engines.list_backend_ids()
+    assert set(engine_ids) <= set(command_names)
+    engine_commands = [name for name in command_names if name in engine_ids]
+    assert engine_commands == engine_ids
+
+
+def test_engine_commands_do_not_expose_engine_id_option() -> None:
+    group = cast(click.Group, typer.main.get_command(cli.app))
+    engine_ids = engines.list_backend_ids()
+
+    ctx = group.make_context("takopi", [])
+
+    for engine_id in engine_ids:
+        command = group.get_command(ctx, engine_id)
+        assert command is not None
+        options: set[str] = set()
+        for param in command.params:
+            options.update(getattr(param, "opts", []))
+            options.update(getattr(param, "secondary_opts", []))
+        assert "--final-notify" in options
+        assert "--debug" in options
+        assert not any(opt.lstrip("-") == "engine-id" for opt in options)