Update.

test/await/in_method.wren

@@ -0,0 +1,11 @@
+import "scheduler" for Scheduler
+import "timer" for Timer
+
+class Helper {
+  static run() {
+    await Timer.sleep(1)
+    return "completed"
+  }
+}
+
+System.print(Helper.run()) // expect: completed