michael@0: // Any copyright is dedicated to the Public Domain.
michael@0: // http://creativecommons.org/licenses/publicdomain/
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: var BUGNUMBER = 715821;
michael@0: var summary = "Implement __define[GS]etter__ using Object.defineProperty";
michael@0: 
michael@0: print(BUGNUMBER + ": " + summary);
michael@0: 
michael@0: /*************
michael@0:  * UTILITIES *
michael@0:  *************/
michael@0: 
michael@0: function s(desc)
michael@0: {
michael@0:   if (typeof desc === "undefined")
michael@0:     return "<undefined>";
michael@0:   assertEq(typeof desc, "object");
michael@0:   assertEq(desc !== null, true);
michael@0: 
michael@0:   var str = "<enumerable: <" + desc.enumerable + ">, " +
michael@0:             " configurable: <" + desc.configurable + ">,";
michael@0: 
michael@0:   if (desc.hasOwnProperty("value"))
michael@0:   {
michael@0:     return str +
michael@0:            " value: <" + desc.value + ">," +
michael@0:            " writable: <" + desc.writable + ">>";
michael@0:   }
michael@0: 
michael@0:   return str +
michael@0:          " get: <" + desc.get + ">," +
michael@0:          " set: <" + desc.set + ">>";
michael@0: }
michael@0: 
michael@0: function checkField(field, desc, expected)
michael@0: {
michael@0:   var present = desc.hasOwnProperty(field);
michael@0:   assertEq(present, expected.hasOwnProperty(field),
michael@0:            field + " presence mismatch (got " + s(desc) + ", expected " + s(expected) + ")");
michael@0:   if (present)
michael@0:   {
michael@0:     assertEq(desc[field], expected[field],
michael@0:              field + " value mismatch (got " + s(desc) + ", expected " + s(expected) + ")");
michael@0:   }
michael@0: }
michael@0: 
michael@0: function check(obj, prop, expected)
michael@0: {
michael@0:   var desc = Object.getOwnPropertyDescriptor(obj, prop);
michael@0:   assertEq(typeof desc, typeof expected,
michael@0:            "type mismatch (got " + s(desc) + ", expected " + s(expected) + ")");
michael@0: 
michael@0:   assertEq(desc.hasOwnProperty("get"), desc.hasOwnProperty("set"),
michael@0:            "bad descriptor: " + s(desc));
michael@0:   assertEq(desc.hasOwnProperty("value"), desc.hasOwnProperty("writable"),
michael@0:            "bad descriptor: " + s(desc));
michael@0: 
michael@0:   assertEq(desc.hasOwnProperty("get"), !desc.hasOwnProperty("value"),
michael@0:            "bad descriptor: " + s(desc));
michael@0: 
michael@0:   checkField("get", desc, expected);
michael@0:   checkField("set", desc, expected);
michael@0:   checkField("value", desc, expected);
michael@0:   checkField("writable", desc, expected);
michael@0:   checkField("enumerable", desc, expected);
michael@0:   checkField("configurable", desc, expected);
michael@0: }
michael@0: 
michael@0: function expectTypeError(f)
michael@0: {
michael@0:   try
michael@0:   {
michael@0:     f();
michael@0:     throw new Error("no error thrown");
michael@0:   }
michael@0:   catch (e)
michael@0:   {
michael@0:     assertEq(e instanceof TypeError, true,
michael@0:              "wrong error thrown: got " + e + ", not a TypeError");
michael@0:   }
michael@0: }
michael@0: 
michael@0: /**************
michael@0:  * BEGIN TEST *
michael@0:  **************/
michael@0: 
michael@0: // Adding a new getter, overwriting an existing one
michael@0: 
michael@0: function g1() { }
michael@0: var gobj = {};
michael@0: gobj.__defineGetter__("foo", g1);
michael@0: check(gobj, "foo", { get: g1, set: undefined, enumerable: true, configurable: true });
michael@0: 
michael@0: function g2() { }
michael@0: gobj.__defineGetter__("foo", g2);
michael@0: check(gobj, "foo", { get: g2, set: undefined, enumerable: true, configurable: true });
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: // Adding a new setter, overwriting an existing one
michael@0: 
michael@0: function s1() { }
michael@0: var sobj = {};
michael@0: sobj.__defineSetter__("bar", s1);
michael@0: check(sobj, "bar", { get: undefined, set: s1, enumerable: true, configurable: true });
michael@0: 
michael@0: function s2() { }
michael@0: sobj.__defineSetter__("bar", s2);
michael@0: check(sobj, "bar", { get: undefined, set: s2, enumerable: true, configurable: true });
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: // Adding a new getter, then adding a setter
michael@0: // Changing an existing accessor's enumerability, then "null"-changing the accessor
michael@0: // Changing an accessor's configurability, then "null"-changing and real-changing the accessor
michael@0: 
michael@0: function g3() { }
michael@0: var gsobj = {};
michael@0: gsobj.__defineGetter__("baz", g3);
michael@0: check(gsobj, "baz", { get: g3, set: undefined, enumerable: true, configurable: true });
michael@0: 
michael@0: function s3() { }
michael@0: gsobj.__defineSetter__("baz", s3);
michael@0: check(gsobj, "baz", { get: g3, set: s3, enumerable: true, configurable: true });
michael@0: 
michael@0: Object.defineProperty(gsobj, "baz", { enumerable: false });
michael@0: check(gsobj, "baz", { get: g3, set: s3, enumerable: false, configurable: true });
michael@0: 
michael@0: gsobj.__defineGetter__("baz", g3);
michael@0: check(gsobj, "baz", { get: g3, set: s3, enumerable: true, configurable: true });
michael@0: 
michael@0: Object.defineProperty(gsobj, "baz", { enumerable: false });
michael@0: check(gsobj, "baz", { get: g3, set: s3, enumerable: false, configurable: true });
michael@0: 
michael@0: gsobj.__defineSetter__("baz", s3);
michael@0: check(gsobj, "baz", { get: g3, set: s3, enumerable: true, configurable: true });
michael@0: 
michael@0: Object.defineProperty(gsobj, "baz", { configurable: false });
michael@0: expectTypeError(function() { gsobj.__defineSetter__("baz", s2); });
michael@0: expectTypeError(function() { gsobj.__defineSetter__("baz", s3); });
michael@0: check(gsobj, "baz", { get: g3, set: s3, enumerable: true, configurable: false });
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: // Adding a new setter, then adding a getter
michael@0: // Changing an existing accessor's enumerability, then "null"-changing the accessor
michael@0: // Changing an accessor's configurability, then "null"-changing and real-changing the accessor
michael@0: 
michael@0: function s4() { }
michael@0: var sgobj = {};
michael@0: sgobj.__defineSetter__("baz", s4);
michael@0: check(sgobj, "baz", { get: undefined, set: s4, enumerable: true, configurable: true });
michael@0: 
michael@0: function g4() { }
michael@0: sgobj.__defineGetter__("baz", g4);
michael@0: check(sgobj, "baz", { get: g4, set: s4, enumerable: true, configurable: true });
michael@0: 
michael@0: Object.defineProperty(sgobj, "baz", { enumerable: false });
michael@0: check(sgobj, "baz", { get: g4, set: s4, enumerable: false, configurable: true });
michael@0: 
michael@0: sgobj.__defineSetter__("baz", s4);
michael@0: check(sgobj, "baz", { get: g4, set: s4, enumerable: true, configurable: true });
michael@0: 
michael@0: Object.defineProperty(sgobj, "baz", { enumerable: false });
michael@0: check(sgobj, "baz", { get: g4, set: s4, enumerable: false, configurable: true });
michael@0: 
michael@0: sgobj.__defineSetter__("baz", s4);
michael@0: check(sgobj, "baz", { get: g4, set: s4, enumerable: true, configurable: true });
michael@0: 
michael@0: Object.defineProperty(sgobj, "baz", { configurable: false });
michael@0: expectTypeError(function() { sgobj.__defineGetter__("baz", g3); });
michael@0: expectTypeError(function() { sgobj.__defineSetter__("baz", s4); });
michael@0: check(sgobj, "baz", { get: g4, set: s4, enumerable: true, configurable: false });
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: // Adding a getter over a writable data property
michael@0: 
michael@0: function g5() { }
michael@0: var gover = { quux: 17 };
michael@0: check(gover, "quux", { value: 17, writable: true, enumerable: true, configurable: true });
michael@0: 
michael@0: gover.__defineGetter__("quux", g5);
michael@0: check(gover, "quux", { get: g5, set: undefined, enumerable: true, configurable: true });
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: // Adding a setter over a writable data property
michael@0: 
michael@0: function s5() { }
michael@0: var sover = { quux: 17 };
michael@0: check(sover, "quux", { value: 17, writable: true, enumerable: true, configurable: true });
michael@0: 
michael@0: sover.__defineSetter__("quux", s5);
michael@0: check(sover, "quux", { get: undefined, set: s5, enumerable: true, configurable: true });
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: // Adding a getter over a non-writable data property
michael@0: 
michael@0: function g6() { }
michael@0: var gnover = { eit: 17 };
michael@0: check(gnover, "eit", { value: 17, writable: true, enumerable: true, configurable: true });
michael@0: Object.defineProperty(gnover, "eit", { writable: false });
michael@0: check(gnover, "eit", { value: 17, writable: false, enumerable: true, configurable: true });
michael@0: 
michael@0: gnover.__defineGetter__("eit", g6);
michael@0: check(gnover, "eit", { get: g6, set: undefined, enumerable: true, configurable: true });
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: // Adding a setter over a non-writable data property
michael@0: 
michael@0: function s6() { }
michael@0: var snover = { eit: 17 };
michael@0: check(snover, "eit", { value: 17, writable: true, enumerable: true, configurable: true });
michael@0: Object.defineProperty(snover, "eit", { writable: false });
michael@0: check(snover, "eit", { value: 17, writable: false, enumerable: true, configurable: true });
michael@0: 
michael@0: snover.__defineSetter__("eit", s6);
michael@0: check(snover, "eit", { get: undefined, set: s6, enumerable: true, configurable: true });
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: // Adding a getter over a non-configurable, writable data property
michael@0: 
michael@0: function g7() { }
michael@0: var gncover = { moo: 17 };
michael@0: check(gncover, "moo", { value: 17, writable: true, enumerable: true, configurable: true });
michael@0: Object.defineProperty(gncover, "moo", { configurable: false });
michael@0: check(gncover, "moo", { value: 17, writable: true, enumerable: true, configurable: false });
michael@0: 
michael@0: expectTypeError(function() { gncover.__defineGetter__("moo", g7); });
michael@0: check(gncover, "moo", { value: 17, writable: true, enumerable: true, configurable: false });
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: // Adding a setter over a non-configurable, writable data property
michael@0: 
michael@0: function s7() { }
michael@0: var sncover = { moo: 17 };
michael@0: check(sncover, "moo", { value: 17, writable: true, enumerable: true, configurable: true });
michael@0: Object.defineProperty(sncover, "moo", { configurable: false });
michael@0: check(sncover, "moo", { value: 17, writable: true, enumerable: true, configurable: false });
michael@0: 
michael@0: expectTypeError(function() { sncover.__defineSetter__("moo", s7); });
michael@0: check(sncover, "moo", { value: 17, writable: true, enumerable: true, configurable: false });
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: // Adding a getter over a non-configurable, non-writable data property
michael@0: 
michael@0: function g8() { }
michael@0: var gncwover = { fwoosh: 17 };
michael@0: check(gncwover, "fwoosh", { value: 17, writable: true, enumerable: true, configurable: true });
michael@0: Object.defineProperty(gncwover, "fwoosh", { writable: false, configurable: false });
michael@0: check(gncwover, "fwoosh", { value: 17, writable: false, enumerable: true, configurable: false });
michael@0: 
michael@0: expectTypeError(function() { gncwover.__defineGetter__("fwoosh", g7); });
michael@0: check(gncwover, "fwoosh", { value: 17, writable: false, enumerable: true, configurable: false });
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: // Adding a setter over a non-configurable, non-writable data property
michael@0: 
michael@0: function s8() { }
michael@0: var sncwover = { fwoosh: 17 };
michael@0: check(sncwover, "fwoosh", { value: 17, writable: true, enumerable: true, configurable: true });
michael@0: Object.defineProperty(sncwover, "fwoosh", { writable: false, configurable: false });
michael@0: check(sncwover, "fwoosh", { value: 17, writable: false, enumerable: true, configurable: false });
michael@0: 
michael@0: expectTypeError(function() { sncwover.__defineSetter__("fwoosh", s7); });
michael@0: check(sncwover, "fwoosh", { value: 17, writable: false, enumerable: true, configurable: false });
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: if (typeof reportCompare === "function")
michael@0:   reportCompare(true, true);
michael@0: 
michael@0: print("Tests complete");