diff --git a/tests/fixtures/p23-03/layout_comparison.gd.uid b/tests/fixtures/p23-03/layout_comparison.gd.uid
new file mode 100644
index 0000000..64f64f2
--- /dev/null
+++ b/tests/fixtures/p23-03/layout_comparison.gd.uid
@@ -0,0 +1 @@
+uid://dtxpm0n6cfom
diff --git a/tests/fixtures/p23-03/observation.gd.uid b/tests/fixtures/p23-03/observation.gd.uid
new file mode 100644
index 0000000..d2b92c8
--- /dev/null
+++ b/tests/fixtures/p23-03/observation.gd.uid
@@ -0,0 +1 @@
+uid://dmoi8je5hse38
diff --git a/tests/fixtures/p23-03/passive_observation.gd.uid b/tests/fixtures/p23-03/passive_observation.gd.uid
new file mode 100644
index 0000000..5a138e4
--- /dev/null
+++ b/tests/fixtures/p23-03/passive_observation.gd.uid
@@ -0,0 +1 @@
+uid://d3oqtdp6dodu1
diff --git a/tests/fixtures/p23-03/passive_os_recorder.gd.uid b/tests/fixtures/p23-03/passive_os_recorder.gd.uid
new file mode 100644
index 0000000..50f6f59
--- /dev/null
+++ b/tests/fixtures/p23-03/passive_os_recorder.gd.uid
@@ -0,0 +1 @@
+uid://mn33trympqu6