Bug 645417, part 15 - Tests for ToObject on symbols. r=sfink.

The test as-base-value.js is not testing symbols as property keys (which is
implemented in a later patch), but on the other side of the . operator: as
things that can have property accesses done to them, just like you can do
"name".length or (3.14).toString().

--HG--
extra : rebase_source : 3dac7660999bd021ec32c13985471e1608a29f64

js/src/tests/ecma_6/Symbol/as-base-value.js

@@ -0,0 +1,86 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/ */
+
+// Like other primitives, symbols can be treated as objects, using object-like
+// syntax: `symbol.prop` or `symbol[key]`.
+//
+// In ECMAScript spec jargon, this creates a Reference whose base value is a
+// primitive Symbol value.
+
+var symbols = [
+    Symbol(),
+    Symbol("ponies"),
+    Symbol.for("sym"),
+    Symbol.iterator
+];
+
+// Test accessor property, used below.
+var gets, sets;
+Object.defineProperty(Symbol.prototype, "prop", {
+    get: function () {
+        "use strict";
+        gets++;
+        assertEq(typeof this, "object");
+        assertEq(this instanceof Symbol, true);
+        return "got";
+    },
+    set: function (v) {
+        "use strict";
+        sets++;
+        assertEq(typeof this, "object");
+        assertEq(this instanceof Symbol, true);
+        assertEq(v, "newvalue");
+    }
+});
+
+for (var sym of symbols) {
+    assertEq(sym.constructor, Symbol);
+
+    // method on Object.prototype
+    assertEq(sym.hasOwnProperty("constructor"), false);
+    assertEq(sym.toLocaleString(), sym.toString()); // once .toString() exists
+
+    // custom method monkeypatched onto Symbol.prototype
+    Symbol.prototype.nonStrictMethod = function (arg) {
+        assertEq(arg, "ok");
+        assertEq(this instanceof Symbol, true);
+        return 13;
+    };
+    assertEq(sym.nonStrictMethod("ok"), 13);
+
+    // the same, but strict mode
+    Symbol.prototype.strictMethod = function (arg) {
+        "use strict";
+        assertEq(arg, "ok2");
+        assertEq(this, sym);
+        return 14;
+    };
+    assertEq(sym.strictMethod("ok2"), 14);
+
+    // getter/setter on Symbol.prototype
+    gets = 0;
+    sets = 0;
+    var propname = "prop";
+
+    assertEq(sym.prop, "got");
+    assertEq(gets, 1);
+    assertEq(sym[propname], "got");
+    assertEq(gets, 2);
+
+    assertEq(sym.prop = "newvalue", "newvalue");
+    assertEq(sets, 1);
+    assertEq(sym[propname] = "newvalue", "newvalue");
+    assertEq(sets, 2);
+
+    // non-existent property
+    assertEq(sym.noSuchProp, undefined);
+    var noSuchPropName = "nonesuch";
+    assertEq(sym[noSuchPropName], undefined);
+
+    // non-existent method
+    assertThrowsInstanceOf(() => sym.noSuchProp(), TypeError);
+    assertThrowsInstanceOf(() => sym[noSuchPropName](), TypeError);
+}
+
+if (typeof reportCompare === "function")
+    reportCompare(0, 0);

js/src/tests/ecma_6/Symbol/conversions.js

@@ -24,6 +24,16 @@ for (var sym of symbols) {
     assertThrowsInstanceOf(() => sym + "", TypeError);
     assertThrowsInstanceOf(() => "" + [1, 2, Symbol()], TypeError);
     assertThrowsInstanceOf(() => ["simple", "thimble", Symbol()].join(), TypeError);
+
+    // 7.1.13 ToObject
+    var obj = Object(sym);
+    assertEq(typeof obj, "object");
+    assertEq(Object.prototype.toString.call(obj), "[object Symbol]");
+    assertEq(Object.getPrototypeOf(obj), Symbol.prototype);
+    assertEq(Object.getOwnPropertyNames(obj).length, 0);
+    assertEq(Object(sym) === Object(sym), false);  // new object each time
+    var f = function () { return this; };
+    assertEq(f.call(sym) === f.call(sym), false);  // new object each time
 }
 
 if (typeof reportCompare === "function")

js/src/tests/ecma_6/Symbol/typeof.js

@@ -5,5 +5,7 @@ assertEq(typeof Symbol(), "symbol");
 assertEq(typeof Symbol("ponies"), "symbol");
 assertEq(typeof Symbol.for("ponies"), "symbol");
 
+assertEq(typeof Object(Symbol()), "object");
+
 if (typeof reportCompare === "function")
     reportCompare(0, 0);