use Codex 5.3 to review template to spec

{{cookiecutter.project_slug}}/tests/test_cli.py

@@ -0,0 +1,75 @@
+from __future__ import annotations
+
+import json
+
+from typer.testing import CliRunner
+
+from {{ cookiecutter.package_name }}.cli.app import app
+from {{ cookiecutter.package_name }}.config.paths import ENV_CONFIG_VAR
+
+runner = CliRunner()
+
+
+def test_config_show_success_defaults() -> None:
+    result = runner.invoke(app, ["config", "show"])
+
+    assert result.exit_code == 0
+    payload = json.loads(result.output)
+    assert payload["source"] == "<defaults>"
+    assert payload["config"]["app"]["greeting"] == "Hello"
+
+
+def test_config_init_create_and_overwrite(tmp_path) -> None:
+    path = tmp_path / "config.toml"
+
+    create_result = runner.invoke(app, ["config", "init", "--path", str(path)])
+    assert create_result.exit_code == 0
+    assert path.exists()
+
+    conflict_result = runner.invoke(app, ["config", "init", "--path", str(path)])
+    assert conflict_result.exit_code == 1
+    assert "Config already exists" in conflict_result.output
+
+    overwrite_result = runner.invoke(
+        app,
+        ["config", "init", "--path", str(path), "--overwrite"],
+    )
+    assert overwrite_result.exit_code == 0
+
+
+def test_config_show_missing_env_file_exits_with_code_1(tmp_path, monkeypatch) -> None:
+    missing = tmp_path / "missing.toml"
+    monkeypatch.setenv(ENV_CONFIG_VAR, str(missing))
+
+    result = runner.invoke(app, ["config", "show"])
+
+    assert result.exit_code == 1
+    assert "Config file not found" in result.output
+
+
+def test_config_show_invalid_config_exits_with_code_1(tmp_path, monkeypatch) -> None:
+    config_path = tmp_path / "config.toml"
+    config_path.write_text('unknown = "value"\n')
+    monkeypatch.setenv(ENV_CONFIG_VAR, str(config_path))
+
+    result = runner.invoke(app, ["config", "show"])
+
+    assert result.exit_code == 1
+    assert "Extra inputs are not permitted" in result.output
+
+
+def test_hello_cli_override_precedence(tmp_path, monkeypatch) -> None:
+    config_path = tmp_path / "config.toml"
+    config_path.write_text('[app]\ngreeting = "Hi"\n\n[database]\npath = "/tmp/example.db"\n')
+    monkeypatch.setenv(ENV_CONFIG_VAR, str(config_path))
+
+    from_config = runner.invoke(app, ["hello", "say", "--name", "Ada"])
+    assert from_config.exit_code == 0
+    assert "Hi, Ada!" in from_config.output
+
+    from_cli = runner.invoke(
+        app,
+        ["hello", "say", "--name", "Ada", "--greeting", "Yo"],
+    )
+    assert from_cli.exit_code == 0
+    assert "Yo, Ada!" in from_cli.output