* Add a test for nix-copy-closure.

release.nix

@@ -145,6 +145,10 @@ let
       inherit nixpkgs nixos; nix = build { inherit system; }; system = "x86_64-linux";
     }).test;
 
+    tests.nix_copy_closure = (import ./tests/nix-copy-closure.nix rec {
+      inherit nixpkgs nixos; nix = build { inherit system; }; system = "x86_64-linux";
+    }).test;
+
   };
 
 

tests/nix-copy-closure.nix

@@ -0,0 +1,53 @@
+# Test ‘nix-copy-closure’.
+
+{ nixpkgs, nixos, system, nix }:
+
+with import "${nixos}/lib/testing.nix" { inherit nixpkgs system; };
+
+makeTest ({ pkgs, ... }: let pkgA = pkgs.aterm; pkgB = pkgs.wget; in {
+
+  nodes =
+    { client =
+        { config, pkgs, ... }:
+        { virtualisation.writableStore = true;
+          virtualisation.pathsInNixDB = [ pkgA ];
+          environment.nix = nix;
+        };
+        
+      server =
+        { config, pkgs, ... }:
+        { services.openssh.enable = true;
+          virtualisation.writableStore = true;
+          virtualisation.pathsInNixDB = [ pkgB ];
+          environment.nix = nix;
+        };        
+    };
+
+  testScript = { nodes }:
+    ''
+      startAll;
+
+      # Create an SSH key on the client.
+      my $key = `${pkgs.openssh}/bin/ssh-keygen -t dsa -f key -N ""`;
+      $client->succeed("mkdir -m 700 /root/.ssh");
+      $client->copyFileFromHost("key", "/root/.ssh/id_dsa");
+      $client->succeed("chmod 600 /root/.ssh/id_dsa");
+
+      # Install the SSH key on the server.
+      $server->succeed("mkdir -m 700 /root/.ssh");
+      $server->copyFileFromHost("key.pub", "/root/.ssh/authorized_keys");
+      $server->waitForJob("sshd");
+      $client->succeed("ssh -o StrictHostKeyChecking=no " . $server->name() . " 'echo hello world'");
+
+      # Copy the closure of package A from the client to the server.
+      $server->fail("nix-store --check-validity ${pkgA}");
+      $client->succeed("nix-copy-closure --to server --gzip ${pkgA} >&2");
+      $server->succeed("nix-store --check-validity ${pkgA}");
+
+      # Copy the closure of package B from the server to the client.
+      $client->fail("nix-store --check-validity ${pkgB}");
+      $client->succeed("nix-copy-closure --from server --gzip ${pkgB} >&2");
+      $client->succeed("nix-store --check-validity ${pkgB}");
+    '';
+
+})