From cc3a3c40a2cc2eadb1c55ea44260817090f12cb3 Mon Sep 17 00:00:00 2001
From: nikstur <nikstur@outlook.com>
Date: Wed, 21 Jun 2023 01:38:27 +0200
Subject: [PATCH] nixos/tests/qemu-vm-volatile-root: init

---
 nixos/tests/all-tests.nix             |  1 +
 nixos/tests/qemu-vm-volatile-root.nix | 17 +++++++++++++++++
 2 files changed, 18 insertions(+)
 create mode 100644 nixos/tests/qemu-vm-volatile-root.nix

diff --git a/nixos/tests/all-tests.nix b/nixos/tests/all-tests.nix
index 5e846fc83d1a..63b2700ae518 100644
--- a/nixos/tests/all-tests.nix
+++ b/nixos/tests/all-tests.nix
@@ -641,6 +641,7 @@ in {
   pulseaudio = discoverTests (import ./pulseaudio.nix);
   qboot = handleTestOn ["x86_64-linux" "i686-linux"] ./qboot.nix {};
   qemu-vm-restrictnetwork = handleTest ./qemu-vm-restrictnetwork.nix {};
+  qemu-vm-volatile-root = runTest ./qemu-vm-volatile-root.nix;
   quorum = handleTest ./quorum.nix {};
   quake3 = handleTest ./quake3.nix {};
   qownnotes = handleTest ./qownnotes.nix {};
diff --git a/nixos/tests/qemu-vm-volatile-root.nix b/nixos/tests/qemu-vm-volatile-root.nix
new file mode 100644
index 000000000000..bc8fd853409d
--- /dev/null
+++ b/nixos/tests/qemu-vm-volatile-root.nix
@@ -0,0 +1,17 @@
+# Test that the root filesystem is a volatile tmpfs.
+
+{ lib, ... }:
+
+{
+  name = "qemu-vm-volatile-root";
+
+  meta.maintainers = with lib.maintainers; [ nikstur ];
+
+  nodes.machine = _: {
+    virtualisation.diskImage = null;
+  };
+
+  testScript = ''
+    machine.succeed("findmnt --kernel --types tmpfs /")
+  '';
+}