Add checks for imperative guest management

checks/data/flake1/flake.nix

@@ -0,0 +1,11 @@
+{
+  description = "A Miniguest guest";
+
+  outputs = { self, nixpkgs }: with nixpkgs.lib; with importJSON ./params.json; {
+    nixosConfigurations.dummy.config.system.build.miniguest =
+      nixpkgs.legacyPackages.${system}.runCommand "dummy" { } ''
+        mkdir -p $out/boot
+        echo foo > $out/boot/init
+      '';
+  };
+}

checks/default.nix

@@ -1,34 +1,4 @@
-inputs@{ self, nixpkgs, ... }:
-system:
-let
-  kvm_guest = nixpkgs.lib.nixosSystem {
-    inherit system;
-    modules = [
-      self.nixosModules.miniguest
-      {
-        boot.miniguest.enable = true;
-        fileSystems."/" = {
-          device = "none";
-          fsType = "tmpfs";
-          options = [ "defaults" "mode=755" ];
-        };
-      }
-    ];
-  };
-  lxc_guest = nixpkgs.lib.nixosSystem {
-    inherit system;
-    modules = [
-      self.nixosModules.miniguest
-      {
-        boot.miniguest.enable = true;
-        boot.miniguest.guestType = "lxc";
-        boot.miniguest.storeCorruptionWarning = false;
-      }
-    ];
-  };
-in
-with nixpkgs.legacyPackages.${system};
-lib.optionalAttrs stdenv.isLinux {
-  build_kvm_guest = kvm_guest.config.system.build.miniguest;
-  build_lxc_guest = lxc_guest.config.system.build.miniguest;
-}
+inputs: system:
+
+import ./simple-guests.nix inputs system //
+import ./imperative-management.nix inputs system

checks/imperative-management.nix

@@ -0,0 +1,61 @@
+inputs@{ self, nixpkgs, ... }: system:
+
+with nixpkgs.legacyPackages.${system};
+with self.packages.${system};
+let
+  # need a fixed-output copy of nixpkgs for offline use and reproducibility
+  pinned-nixpkgs = fetchFromGitHub {
+    owner = "NixOS";
+    repo = "nixpkgs";
+    rev = "21.05";
+    sha256 = "sha256-ZjBd81a6J3TwtlBr3rHsZspYUwT9OdhDk+a/SgSEf7I=";
+  };
+
+  mkTest = { name, testScript }: nixosTest {
+    inherit name;
+    machine = {
+      environment.systemPackages = [ miniguest ];
+      environment.etc."pinned-nixpkgs".source = pinned-nixpkgs;
+      system.extraDependencies = [ (import pinned-nixpkgs { inherit system; }).stdenvNoCC ];
+      virtualisation.memorySize = 1024;
+    };
+    testScript = ''
+      machine.copy_from_host("${data/flake1}", "/tmp/flake1")
+      machine.succeed("""
+      cat > /tmp/flake1/params.json << EOF
+        ${builtins.toJSON { inherit system; }}
+      EOF
+      # override nixpkgs
+      ${nixFlakes}/bin/nix --experimental-features "nix-command flakes" flake update /tmp/flake1 --override-input nixpkgs /etc/pinned-nixpkgs
+      """);
+    '' + testScript;
+  };
+in
+lib.optionalAttrs stdenv.isLinux {
+  install_dummy = mkTest {
+    name = "miniguest-install-dummy";
+    testScript = ''
+      machine.succeed("""
+        miniguest install /tmp/flake1#dummy
+      """)
+      assert "foo" in machine.succeed("""
+        cat /etc/miniguests/dummy/boot/init
+      """)
+    '';
+  };
+
+  install_nonexistent = mkTest {
+    name = "miniguest-install-nonexistent";
+    testScript = ''
+      machine.fail("""
+        miniguest install /tmp/flake1#nonexistent
+      """)
+      machine.succeed("""
+        test ! -e /etc/miniguests/nonexistent
+      """)
+      machine.succeed("""
+        test ! -e /nix/var/nix/miniguest-profiles/nonexistent
+      """)
+    '';
+  };
+}

checks/simple-guests.nix

@@ -0,0 +1,35 @@
+inputs@{ self, nixpkgs, ... }: system:
+
+with nixpkgs.lib;
+let
+  kvm_guest = nixosSystem {
+    inherit system;
+    modules = [
+      self.nixosModules.miniguest
+      {
+        boot.miniguest.enable = true;
+        fileSystems."/" = {
+          device = "none";
+          fsType = "tmpfs";
+          options = [ "defaults" "mode=755" ];
+        };
+      }
+    ];
+  };
+  lxc_guest = nixosSystem {
+    inherit system;
+    modules = [
+      self.nixosModules.miniguest
+      {
+        boot.miniguest.enable = true;
+        boot.miniguest.guestType = "lxc";
+        boot.miniguest.storeCorruptionWarning = false;
+      }
+    ];
+  };
+in
+with nixpkgs.legacyPackages.${system};
+optionalAttrs stdenv.isLinux {
+  build_kvm_guest = kvm_guest.config.system.build.miniguest;
+  build_lxc_guest = lxc_guest.config.system.build.miniguest;
+}