diff --git a/init.lua b/init.lua
index f3ab5fa..bed92ef 100644
--- a/init.lua
+++ b/init.lua
@@ -30,8 +30,11 @@ dofile(MP .. "/power.lua")
 dofile(MP .. "/liquid.lua")
 dofile(MP .. "/control.lua")
 
--- Only for testing/demo purposes
---dofile(MP .. "/test/test_liquid.lua")
---local Cable = dofile(MP .. "/test/test_power.lua")
---assert(loadfile(MP .. "/test/test_control.lua"))(Cable)
---dofile(MP .. "/test/test_tool.lua")
+print("networks_test_enabled", minetest.settings:get_bool("networks_test_enabled"))
+if minetest.settings:get_bool("networks_test_enabled") == true then
+	-- Only for testing/demo purposes
+	dofile(MP .. "/test/test_liquid.lua")
+	local Cable = dofile(MP .. "/test/test_power.lua")
+	assert(loadfile(MP .. "/test/test_control.lua"))(Cable)
+	dofile(MP .. "/test/test_tool.lua")
+end
\ No newline at end of file
diff --git a/settingtypes.txt b/settingtypes.txt
new file mode 100644
index 0000000..22d9819
--- /dev/null
+++ b/settingtypes.txt
@@ -0,0 +1,2 @@
+# Enable some nodes for testing/demo purposes
+networks_test_enabled (test nodes enabled) bool false