update test

deployment/check/data-model/nixosTest.nix

@@ -9,6 +9,10 @@ let
 in
 {
   _class = "nixosTest";
+  imports = [
+    ./options.nix
+  ];
+
   name = "deployment-model";
   sourceFileset = lib.fileset.unions [
     ../../data-model.nix
@@ -34,7 +38,25 @@ in
 
   extraTestScript = ''
     ${lib.concatStringsSep "\n" (
-      lib.lists.map (nodeName: ''
+      lib.lists.map (
+        nodeName:
+        let
+          deployment-config = {
+            inherit (config) enableAcme;
+            acmeNodeIP = if config.enableAcme then config.nodes.acme.networking.primaryIPAddress else null;
+            host = nodeName;
+          };
+          inherit
+            ((import ./deployment.nix {
+              config = deployment-config;
+            }).ssh-host.ssh
+            )
+            host
+            username
+            key-file
+            ;
+        in
+        ''
           with subtest("Check the status before deployment"):
             ${nodeName}.fail("${nodeName} 1>&2")
 
@@ -43,29 +65,27 @@ in
               set -euo pipefail
 
               # INSTANTIATE
-            command=(nix-instantiate --expr '
+              command=(nix-instantiate --show-trace --expr '
                 import ${pathToRoot}/deployment/nixos.nix {
-                configuration = import ${pathToRoot}/deployment/check/data-model/deployment.nix {
+                  configuration = (
-                  config = builtins.fromJSON "${
+                    import ${pathToRoot}/deployment/check/data-model/deployment.nix {
-                    escapedJson {
+                      config = builtins.fromJSON "${escapedJson deployment-config}";
-                      inherit (config) enableAcme;
-                      acmeNodeIP = if config.enableAcme then config.nodes.acme.networking.primaryIPAddress else null;
                     }
-                  }";
+                  ).ssh-host.nixos-configuration;
-                };
                 }
               ')
               # DEPLOY
-            host="root@${nodeName}"
+              host="${lib.defaultTo "root" username}@${host}"
               sshOpts=(
+                ${if key-file == null then "" else "-i ${key-file}"}
                 -o StrictHostKeyChecking=no
                 -o "ConnectTimeout=1"
                 -o "ServerAliveInterval=1"
               )
               # instantiate the config in /nix/store
-            "''${command[@]}" -A out_path
+              "''${command[@]}" --show-trace -A out_path
               # get the realized derivation to deploy
-            outPath=$(nix-store --realize "$("''${command[@]}" --eval --strict --json | jq -r '.drv_path')")
+              outPath=$(nix-store --realize "$("''${command[@]}" --show-trace --eval --strict --json | jq -r '.drv_path')")
               # deploy the config by nix-copy-closure
               NIX_SSHOPTS="''${sshOpts[*]}" nix-copy-closure --to "$host" "$outPath" --gzip --use-substitutes
               # switch the remote host to the config
@@ -80,7 +100,8 @@ in
             """)
             ${nodeName}.wait_for_unit("multi-user.target")
             ${nodeName}.succeed("${nodeName} 1>&2")
-      '') targetMachines
+        ''
+      ) targetMachines
     )}
   '';
 }