Add functional replacer with empty result test

test/built-ins/RegExp/prototype/Symbol.replace/fn-invoke-args-empty-result.js

@@ -0,0 +1,41 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-regexp.prototype-@@replace
+description: >
+  Arguments of functional replaceValue (`exec` result is empty array).
+info: |
+  RegExp.prototype [ @@replace ] ( string, replaceValue )
+
+  [...]
+  14. For each result in results, do
+    [...]
+    e. Let position be ? ToInteger(? Get(result, "index")).
+    [...]
+    k. If functionalReplace is true, then
+      i. Let replacerArgs be « matched ».
+      ii. Append in list order the elements of captures to the end of the List replacerArgs.
+      iii. Append position and S to replacerArgs.
+      [...]
+      v. Let replValue be ? Call(replaceValue, undefined, replacerArgs).
+features: [Symbol.replace]
+---*/
+
+var args;
+var replacer = function() {
+  args = arguments;
+};
+
+var r = /./;
+r.exec = function() {
+  return [];
+};
+
+r[Symbol.replace]('foo', replacer);
+
+assert.notSameValue(args, undefined);
+assert.sameValue(args.length, 3);
+assert.sameValue(args[0], 'undefined');
+assert.sameValue(args[1], 0);
+assert.sameValue(args[2], 'foo');