add regression test for #52

example/multi-device-no-deps.nix

@@ -0,0 +1,50 @@
+{ disks ? [ "/dev/vdb" "/dev/vdc" ], ... }: {
+  disk = {
+    disk0 = {
+      device = builtins.elemAt disks 0;
+      type = "disk";
+      content = {
+        type = "table";
+        format = "gpt";
+        partitions = [
+          {
+            name = "nix";
+            type = "partition";
+            part-type = "primary";
+            start = "0%";
+            end = "100%";
+            bootable = true;
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountpoint = "/a";
+            };
+          }
+        ];
+      };
+    };
+    disk1 = {
+      device = builtins.elemAt disks 1;
+      type = "disk";
+      content = {
+        type = "table";
+        format = "gpt";
+        partitions = [
+          {
+            name = "root";
+            type = "partition";
+            part-type = "primary";
+            start = "0%";
+            end = "100%";
+            bootable = true;
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountpoint = "/b";
+            };
+          }
+        ];
+      };
+    };
+  };
+}

tests/multi-device-no-deps.nix

@@ -0,0 +1,12 @@
+# this is a regression test for https://github.com/nix-community/disko/issues/52
+{ pkgs ? (import <nixpkgs> { })
+, makeDiskoTest ? (pkgs.callPackage ./lib.nix { }).makeDiskoTest
+}:
+makeDiskoTest {
+  disko-config = ../example/multi-device-no-deps.nix;
+  testBoot = false;
+  extraTestScript = ''
+    machine.succeed("mountpoint /mnt/a");
+    machine.succeed("mountpoint /mnt/b");
+  '';
+}