1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/string-toString-valueOf.js b/js/src/jit-test/tests/cacheir/string-toString-valueOf.js
new file mode 100644
index 0000000000..af50c50256
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/string-toString-valueOf.js
@@ -0,0 +1,23 @@
+function simple(str) {
+  assertEq(str.toString(), "abc");
+  assertEq(str.valueOf(), "abc");
+}
+
+function obj(str) {
+  var obj = new String(str);
+  assertEq(obj.toString(), "xyz");
+  assertEq(obj.valueOf(), "xyz");
+}
+
+function mixed() {
+  for (var v of ["abc", new String("abc")]) {
+    assertEq(v.toString(), "abc");
+    assertEq(v.valueOf(), "abc");
+  }
+}
+
+for (var i = 0; i < 100; i++) {
+  simple("abc");
+  obj("xyz");
+  mixed();
+}
+\ No newline at end of file