[Robustness] test observably looks up exec on the object

Author: ljharb

lib/test.js

@@ -13,7 +13,7 @@ var forEach = require('for-each');
 var inspect = require('object-inspect');
 var isEnumerable = callBound('Object.prototype.propertyIsEnumerable');
 var toLowerCase = callBound('String.prototype.toLowerCase');
-var $test = callBound('RegExp.prototype.test');
+var $exec = callBound('RegExp.prototype.exec');
 var objectToString = callBound('Object.prototype.toString');
 
 module.exports = Test;
@@ -553,7 +553,7 @@ Test.prototype['throws'] = function (fn, expected, msg, extra) {
     var passed = caught;
 
     if (isRegExp(expected)) {
-        passed = $test(expected, caught && caught.error);
+        passed = $exec(expected, caught && caught.error) !== null;
         expected = String(expected);
     }
 
@@ -610,7 +610,7 @@ Test.prototype.match = function match(string, regexp, msg, extra) {
             extra: extra
         });
     } else {
-        var matches = $test(regexp, string);
+        var matches = $exec(regexp, string) !== null;
         var message = defined(
             msg,
             'The input ' + (matches ? 'matched' : 'did not match') + ' the regular expression ' + inspect(regexp) + '. Input: ' + inspect(string)
@@ -643,7 +643,7 @@ Test.prototype.doesNotMatch = function doesNotMatch(string, regexp, msg, extra)
             extra: extra
         });
     } else {
-        var matches = $test(regexp, string);
+        var matches = $exec(regexp, string) !== null;
         var message = defined(
             msg,
             'The input ' + (matches ? 'was expected to not match' : 'did not match') + ' the regular expression ' + inspect(regexp) + '. Input: ' + inspect(string)