diff --git a/bus/bus.test.ts b/bus/bus.test.ts
new file mode 100644
index 00000000000..2cd8ef666da
--- /dev/null
+++ b/bus/bus.test.ts
@@ -0,0 +1,8 @@
+namespace $ {
+	$mol_test_mocks.push( $=> {
+		class $mol_bus< Data > extends $.$mol_bus< Data > {
+			send() {}
+		}
+		$.$mol_bus = $mol_bus
+	} )
+}