diff --git a/tests/fixtures/dependency-loop.interfaces b/tests/fixtures/dependency-loop.interfaces
new file mode 100644
index 0000000..e164928
--- /dev/null
+++ b/tests/fixtures/dependency-loop.interfaces
@@ -0,0 +1,9 @@
+auto a
+iface a
+	use link
+	requires b
+
+auto b
+iface b
+	use link
+	requires a