Refactor pkgmgr CLI into modular core and add E2E tests for config/release/make/tools (see ChatGPT conversation 2025-12-08 https://chatgpt.com/share/6936ffa5-4868-800f-ab63-6e367093adce)

tests/e2e/test_integration_config_commands.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+"""
+Integration tests for the `pkgmgr config` command.
+
+We only exercise non-interactive, read-only subcommands here:
+  - pkgmgr config show --all
+  - pkgmgr config show pkgmgr
+
+Interactive or mutating subcommands like `add`, `edit`, `init`,
+`delete`, `ignore` are intentionally not covered in E2E tests to keep
+the CI environment non-interactive and side-effect free.
+"""
+
+from __future__ import annotations
+
+import runpy
+import sys
+import unittest
+
+
+def _run_pkgmgr_config(extra_args: list[str]) -> None:
+    """
+    Run `pkgmgr config ...` with the given extra args.
+
+    Any non-zero SystemExit is treated as a test failure and turned into
+    an AssertionError with diagnostics.
+    """
+    cmd_repr = "pkgmgr " + " ".join(extra_args)
+    original_argv = list(sys.argv)
+
+    try:
+        sys.argv = ["pkgmgr"] + extra_args
+
+        try:
+            runpy.run_module("main", run_name="__main__")
+        except SystemExit as exc:
+            code = exc.code if isinstance(exc.code, int) else str(exc.code)
+            if code != 0:
+                print("[TEST] SystemExit caught while running", cmd_repr)
+                print(f"[TEST] Exit code: {code}")
+                raise AssertionError(
+                    f"{cmd_repr!r} failed with exit code {code}. "
+                    "Scroll up to inspect the output printed before failure."
+                ) from exc
+            # exit code 0 is success
+
+    finally:
+        sys.argv = original_argv
+
+
+class TestIntegrationConfigCommands(unittest.TestCase):
+    """
+    E2E tests for `pkgmgr config` subcommands.
+    """
+
+    def test_config_show_all(self) -> None:
+        """
+        Run: pkgmgr config show --all
+        """
+        _run_pkgmgr_config(["config", "show", "--all"])
+
+    def test_config_show_pkgmgr(self) -> None:
+        """
+        Run: pkgmgr config show pkgmgr
+
+        Uses 'pkgmgr' as the standard repository identifier.
+        """
+        _run_pkgmgr_config(["config", "show", "pkgmgr"])
+
+
+if __name__ == "__main__":
+    unittest.main()