Array.prototype.{every, filter, find, findIndex, forEach, map, some}: Use fresh primitive wrapper f…

test/mjsunit/harmony/array-findindex.js

Index: test/mjsunit/harmony/array-findindex.js
diff --git a/test/mjsunit/harmony/array-findindex.js b/test/mjsunit/harmony/array-findindex.js
index a33849dab393afd1f233bd9ec5461d0c489e794a..c749591fdf5deafe7c9b7cf7f64da57103d02957 100644
--- a/test/mjsunit/harmony/array-findindex.js
+++ b/test/mjsunit/harmony/array-findindex.js
@@ -237,6 +237,23 @@ assertEquals(3, a.findIndex(function(val) { return 24 === val; }));
     return this.elementAt(key) === val;
   }, thisArg);
   assertEquals(1, index);
+
+  // Create a new object in each function call when receiver is a
+  // primitive value. See ECMA-262, Annex C.
+  a = [];
+  [1, 2].findIndex(function() { a.push(this) }, "");
+  assertTrue(a[0] !== a[1]);
+
+  // Do not create a new object otherwise.
+  a = [];
+  [1, 2].findIndex(function() { a.push(this) }, {});
+  assertFalse(a[0] !== a[1]);
+
+  // In strict mode primitive values should not be coerced to an object.
+  a = [];
+  [1, 2].findIndex(function() { 'use strict'; a.push(this); }, "");
+  assertTrue(a[0] === "" && a[0] === a[1]);
+
 })();
 
 // Test exceptions