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 // Test IC for getters backed by a JSNative.

 function test1() {

     for (var i = 0; i < 60; i++) {

         assertEq(it.customNative, undefined);

     }

     var res = 0;

     for (var i = 0; i < 60; i++) {

         it.customNative = i;

         res += it.customNative;

     }

     assertEq(res, 1770);

 }

 function test2() {

     function getValue() {

         return it.customNative;

     }

     for (var i = 0; i < 60; i++) {

         it.customNative = i;

         assertEq(getValue(), i);

     }

     for (var i = 0; i < 60; i++) {

         it.customNative = null;

         assertEq(getValue(), null);

         delete it["customNativ" + "e"];

         assertEq(getValue(), undefined);

         assertEq(it.customNative, undefined);

     }

 }

 if ("it" in this) {

     test1();

     test2();

 }