1 files changed, 26 insertions, 0 deletions
diff --git a/nixos/tests/nix-required-mounts/test-require-feature.nix b/nixos/tests/nix-required-mounts/test-require-feature.nix
new file mode 100644
index 0000000000000..447fd49a300aa
--- /dev/null
+++ b/nixos/tests/nix-required-mounts/test-require-feature.nix
@@ -0,0 +1,26 @@
+{
+  pkgs ? import <nixpkgs> { },
+  feature,
+}:
+
+pkgs.runCommandNoCC "${feature}-present" { requiredSystemFeatures = [ feature ]; } ''
+  if [[ ! -e /${feature}-files ]]; then
+    echo "The host declares ${feature} support, but doesn't expose /${feature}-files" >&2
+    exit 1
+  fi
+  libcudaLocation=/run/opengl-driver/lib/libcuda.so
+  if [[ -e "$libcudaLocation" || -h "$libcudaLocation" ]] ; then
+    true # we're good
+  else
+    echo "The host declares ${feature} support, but it the hook fails to handle the hostPath != guestPath cases" >&2
+    exit 1
+  fi
+  if cat "$libcudaLocation" | xargs test fakeContent = ; then
+    true # we're good
+  else
+    echo "The host declares ${feature} support, but it seems to fail to follow symlinks" >&2
+    echo "The content of /run/opengl-driver/lib/libcuda.so is: $(cat /run/opengl-driver/lib/libcuda.so)" >&2
+    exit 1
+  fi
+  touch $out
+''