1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/Symbol/for.js b/js/src/tests/ecma_6/Symbol/for.js
new file mode 100644
index 000000000..43e285511
--- /dev/null
+++ b/js/src/tests/ecma_6/Symbol/for.js
@@ -0,0 +1,31 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/ */
+
+// Symbol.for called twice with the same argument returns the same symbol.
+assertEq(Symbol.for("ponies"), Symbol.for("ponies"));
+
+// Called twice with equal strings: still the same result.
+var one = Array(64+1).join("x");
+var two = Array(8+1).join(Array(8+1).join("x"));
+assertEq(Symbol.for(one), Symbol.for(two));
+
+// Symbols created by calling Symbol() are not in the symbol registry.
+var sym = Symbol("123");
+assertEq(Symbol.for("123") !== sym, true);
+
+// Empty string is fine.
+assertEq(typeof Symbol.for(""), "symbol");
+
+// Primitive arguments.
+assertEq(Symbol.for(3), Symbol.for("3"));
+assertEq(Symbol.for(null), Symbol.for("null"));
+assertEq(Symbol.for(undefined), Symbol.for("undefined"));
+assertEq(Symbol.for(), Symbol.for("undefined"));
+
+// Symbol.for ignores the 'this' value.
+var foo = Symbol.for("foo")
+assertEq(Symbol.for.call(String, "foo"), foo);
+assertEq(Symbol.for.call(3.14, "foo"), foo);
+
+if (typeof reportCompare === "function")
+    reportCompare(0, 0);