1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testReplaceMap.js b/js/src/jit-test/tests/basic/testReplaceMap.js
new file mode 100644
index 0000000000..929f52ce8e
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testReplaceMap.js
@@ -0,0 +1,27 @@
+
+// String.replace on functions returning hashmap elements.
+
+function first() {
+  var arr = {a: "hello", b: "there"};
+  var s = 'a|b';
+  return s.replace(/[a-z]/g, function(a) { return arr[a]; }, 'g');
+}
+assertEq(first(), "hello|there");
+
+function second() {
+  var arr = {a: "hello", c: "there"};
+  var s = 'a|b|c';
+  return s.replace(/[a-z]/g, function(a) { return arr[a]; }, 'g');
+}
+assertEq(second(), "hello|undefined|there");
+
+Object.defineProperty(Object.prototype, "b", {get: function() { return "what"; }});
+
+assertEq(second(), "hello|what|there");
+
+function third() {
+  var arr = {a: "hello", b: {toString: function() { arr = {}; return "three"; }}, c: "there"};
+  var s = 'a|b|c';
+  return s.replace(/[a-z]/g, function(a) { return arr[a]; }, 'g');
+}
+assertEq(third(), "hello|three|undefined");