diff --git a/test/javFiles/LambdaRunnable.jav b/test/javFiles/LambdaRunnable.jav
index 982680c3..37924ea2 100644
--- a/test/javFiles/LambdaRunnable.jav
+++ b/test/javFiles/LambdaRunnable.jav
@@ -1,3 +1,6 @@
+import java.lang.Runnable;
+import java.lang.String;
+import java.lang.System;
 
 public class LamRunnable{
 
diff --git a/test/visualisation/ToString.java b/test/visualisation/ToString.java
new file mode 100644
index 00000000..00b8ddea
--- /dev/null
+++ b/test/visualisation/ToString.java
@@ -0,0 +1,5 @@
+package visualisation;
+
+public class ToString {
+
+}