diff --git a/eth/test/tests/common.js b/eth/test/tests/common.js
new file mode 100644
index 0000000000..206ebf1455
--- /dev/null
+++ b/eth/test/tests/common.js
@@ -0,0 +1,9 @@
+function log(text) {
+  console.log("[JS TEST SCRIPT] " + text);
+}
+
+function sleep(seconds) {
+    var now = new Date().getTime();
+    while(new Date().getTime() < now + seconds){}
+}
+