Add test for String init called from unresolvable class.

Bug: 20971268

(cherry-picked from f450cf6b06255ead0a43a9e94dc2f2175e6f9849)

Change-Id: I810f599b38a46e738bcacb15ca3c4537e1fb7b77
diff --git a/test/127-secondarydex/src/Test.java b/test/127-secondarydex/src/Test.java
index 82cb901..8547e79 100644
--- a/test/127-secondarydex/src/Test.java
+++ b/test/127-secondarydex/src/Test.java
@@ -22,4 +22,8 @@
     private void print() {
         System.out.println("Test");
     }
+
+    public String toString() {
+        return new String("Test");
+    }
 }