test(cyclopts): cover the reported-error exit codes

project_name/tests/{% if cli_framework == 'cyclopts' %}test_cli.py{% endif %}.jinja

@@ -1,7 +1,14 @@
 import pytest
 
 from {{ package_name }} import __version__, cli
-from {{ package_name }}.cli import EX_SOFTWARE, app, main
+from {{ package_name }}.cli import (
+    EX_NOINPUT,
+    EX_NOPERM,
+    EX_SOFTWARE,
+    EX_UNAVAILABLE,
+    app,
+    main,
+)
 
 
 def test_version(capsys: pytest.CaptureFixture[str]) -> None:
@@ -26,6 +33,32 @@ def test_main_usage_error() -> None:
     assert exc_info.value.code == 2
 
 
+@pytest.mark.parametrize(
+    ("error", "code"),
+    [
+        (FileNotFoundError("missing.txt"), EX_NOINPUT),
+        (PermissionError("locked.txt"), EX_NOPERM),
+        (ConnectionError("down"), EX_UNAVAILABLE),
+        # a subclass lands on its parent's code
+        (ConnectionRefusedError("refused"), EX_UNAVAILABLE),
+    ],
+)
+def test_main_reported_error(
+    monkeypatch: pytest.MonkeyPatch,
+    capsys: pytest.CaptureFixture[str],
+    error: Exception,
+    code: int,
+) -> None:
+    def explode(*_args: object, **_kwargs: object) -> None:
+        raise error
+
+    monkeypatch.setattr(cli, "app", explode)
+    with pytest.raises(SystemExit) as exc_info:
+        main()
+    assert exc_info.value.code == code
+    assert capsys.readouterr().err == f"error: {error}\n"
+
+
 def test_main_unhandled_error(monkeypatch: pytest.MonkeyPatch) -> None:
     # Accept the call that `main` makes, so that the RuntimeError below is what
     # reaches it, rather than a TypeError over the signature.