diff --git a/python/tests/reference/Geom/flip_directions=x-y-z.geom b/python/tests/reference/Geom/flip_directions=x-y-z.geom
new file mode 100644
index 000000000..99e55ad7f
--- /dev/null
+++ b/python/tests/reference/Geom/flip_directions=x-y-z.geom
@@ -0,0 +1,25 @@
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diff --git a/python/tests/reference/Geom/flip_directions=x.geom b/python/tests/reference/Geom/flip_directions=x.geom
new file mode 100644
index 000000000..9d4ee74a9
--- /dev/null
+++ b/python/tests/reference/Geom/flip_directions=x.geom
@@ -0,0 +1,25 @@
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diff --git a/python/tests/reference/Geom/flip_directions=y-z.geom b/python/tests/reference/Geom/flip_directions=y-z.geom
new file mode 100644
index 000000000..ecd22f902
--- /dev/null
+++ b/python/tests/reference/Geom/flip_directions=y-z.geom
@@ -0,0 +1,25 @@
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diff --git a/python/tests/reference/Geom/flip_directions=z-x-y.geom b/python/tests/reference/Geom/flip_directions=z-x-y.geom
new file mode 100644
index 000000000..99e55ad7f
--- /dev/null
+++ b/python/tests/reference/Geom/flip_directions=z-x-y.geom
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