diff --git a/tests/workstation-mac-defaults-contract.nix b/tests/workstation-mac-defaults-contract.nix
new file mode 100644
index 0000000..717974d
--- /dev/null
+++ b/tests/workstation-mac-defaults-contract.nix
@@ -0,0 +1,16 @@
+{ pkgs ? import <nixpkgs> {} }:
+pkgs.runCommand "workstation-mac-defaults-contract" {
+  nativeBuildInputs = [ pkgs.gnugrep ];
+} ''
+  test -f ${../profiles/linux-dev/workstation-v0/gnome/mac-defaults.sh}
+  grep -q "enable-hot-corners false" ${../profiles/linux-dev/workstation-v0/gnome/mac-defaults.sh}
+  grep -q "clock-format '12h'" ${../profiles/linux-dev/workstation-v0/gnome/mac-defaults.sh}
+  grep -q "locate-pointer true" ${../profiles/linux-dev/workstation-v0/gnome/mac-defaults.sh}
+  grep -q "click-policy 'double'" ${../profiles/linux-dev/workstation-v0/gnome/mac-defaults.sh}
+  grep -q "show-delete-permanently true" ${../profiles/linux-dev/workstation-v0/gnome/mac-defaults.sh}
+  grep -q "favorite-apps" ${../profiles/linux-dev/workstation-v0/gnome/mac-defaults.sh}
+  grep -q 'set_custom_binding custom1 "SourceOS Files"' ${../profiles/linux-dev/workstation-v0/gnome/mac-defaults.sh}
+  grep -q 'set_custom_binding custom2 "SourceOS Terminal"' ${../profiles/linux-dev/workstation-v0/gnome/mac-defaults.sh}
+  mkdir -p $out
+  echo validated > $out/result.txt
+''