feat: add nix server provision

pkgs/helpers/tests/test_cli.py

@@ -0,0 +1,50 @@
+from __future__ import annotations
+
+import importlib.util
+import sys
+import unittest
+from pathlib import Path
+
+
+REPO_ROOT = Path(__file__).resolve().parents[3]
+CLI_PATH = REPO_ROOT / "pkgs" / "helpers" / "cli.py"
+
+spec = importlib.util.spec_from_file_location("nodeiwest_cli", CLI_PATH)
+cli = importlib.util.module_from_spec(spec)
+assert spec.loader is not None
+sys.modules[spec.name] = cli
+spec.loader.exec_module(cli)
+
+
+class HelperCliTests(unittest.TestCase):
+    def test_disk_from_device_supports_sd_and_nvme(self) -> None:
+        self.assertEqual(cli.disk_from_device("/dev/sda2"), "/dev/sda")
+        self.assertEqual(cli.disk_from_device("/dev/nvme0n1p2"), "/dev/nvme0n1")
+
+    def test_lookup_colmena_target_host_reads_existing_inventory(self) -> None:
+        flake_text = (REPO_ROOT / "flake.nix").read_text()
+        self.assertEqual(cli.lookup_colmena_target_host(flake_text, "vps1"), "100.101.167.118")
+
+    def test_parse_existing_vps1_configuration(self) -> None:
+        configuration = cli.parse_existing_configuration(REPO_ROOT / "hosts" / "vps1" / "configuration.nix")
+        self.assertEqual(configuration.host_name, "vps1")
+        self.assertEqual(configuration.boot_mode, "uefi")
+        self.assertTrue(configuration.tailscale_openbao)
+        self.assertEqual(configuration.state_version, "25.05")
+        self.assertTrue(configuration.user_ca_public_keys)
+
+    def test_parse_existing_vps1_disko(self) -> None:
+        disko = cli.parse_existing_disko(REPO_ROOT / "hosts" / "vps1" / "disko.nix")
+        self.assertEqual(disko.disk_device, "/dev/sda")
+        self.assertEqual(disko.boot_mode, "uefi")
+        self.assertEqual(disko.swap_size, "4GiB")
+
+    def test_render_bios_disko_uses_bios_partition(self) -> None:
+        rendered = cli.render_disko(boot_mode="bios", disk_device="/dev/vda", swap_size="8GiB")
+        self.assertIn('type = "EF02";', rendered)
+        self.assertIn('device = lib.mkDefault "/dev/vda";', rendered)
+        self.assertIn('size = "8GiB";', rendered)
+
+
+if __name__ == "__main__":
+    unittest.main()