diff --git a/tests/filter/remove b/tests/filter/remove
new file mode 100755
index 0000000..bd2d314
--- /dev/null
+++ b/tests/filter/remove
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+sed 's/"layer": "[^"]*",*//'
diff --git a/tests/filter/rename2 b/tests/filter/rename2
new file mode 100755
index 0000000..e9355be
--- /dev/null
+++ b/tests/filter/rename2
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+sed 's/"layer": "[^"]*"/"layer": "renamed_again"/'