"for (i in myArray)" produces unintentional side effects if a test modifies Array.prototype or Object.prototype. Use for (i=0; __; i++) instead.

js/tests/ecma_3/shell.js

@@ -40,8 +40,8 @@ function reportFailure (msg)
     var funcName = currentFunc();
     var prefix = (funcName) ? "[reported from " + funcName + "] ": "";
     
-    for (l in lines)
+    for (var i=0; i<lines.length; i++)
-        print (FAILED + prefix + lines[l]);
+        print (FAILED + prefix + lines[i]);
 
 }
 
@@ -53,8 +53,8 @@ function printStatus (msg)
     var lines = msg.split ("\n");
     var l;
 
-    for (l in lines)
+    for (var i=0; i<lines.length; i++)
-        print (STATUS + lines[l]);
+        print (STATUS + lines[i]);
 
 }
 

js/tests/js1_5/shell.js

@@ -40,8 +40,8 @@ function reportFailure (msg)
     var funcName = currentFunc();
     var prefix = (funcName) ? "[reported from " + funcName + "] ": "";
     
-    for (l in lines)
+    for (var i=0; i<lines.length; i++)
-        print (FAILED + prefix + lines[l]);
+        print (FAILED + prefix + lines[i]);
 
 }
 
@@ -53,8 +53,8 @@ function printStatus (msg)
     var lines = msg.split ("\n");
     var l;
 
-    for (l in lines)
+    for (var i=0; i<lines.length; i++)
-        print (STATUS + lines[l]);
+        print (STATUS + lines[i]);
 
 }