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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /js/xpconnect/tests/chrome/test_xrayToJS.xul
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'js/xpconnect/tests/chrome/test_xrayToJS.xul')
-rw-r--r--js/xpconnect/tests/chrome/test_xrayToJS.xul948
1 files changed, 948 insertions, 0 deletions
diff --git a/js/xpconnect/tests/chrome/test_xrayToJS.xul b/js/xpconnect/tests/chrome/test_xrayToJS.xul
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+++ b/js/xpconnect/tests/chrome/test_xrayToJS.xul
@@ -0,0 +1,948 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
+<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=933681
+-->
+<window title="Mozilla Bug 933681"
+ xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+ <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+ <!-- test results are displayed in the html:body -->
+ <body xmlns="http://www.w3.org/1999/xhtml">
+ <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=933681"
+ target="_blank">Mozilla Bug 933681</a>
+ </body>
+
+ <!-- test code goes here -->
+ <script type="application/javascript">
+ <![CDATA[
+
+ /** Test for ES constructors on Xrayed globals. **/
+ SimpleTest.waitForExplicitFinish();
+ const Cc = Components.classes;
+ const Ci = Components.interfaces;
+ const Cu = Components.utils;
+ let global = Cu.getGlobalForObject.bind(Cu);
+
+ function checkThrows(f, rgxp, msg) {
+ try {
+ f();
+ ok(false, "Should have thrown: " + msg);
+ } catch (e) {
+ ok(true, "Threw as expected: " + msg);
+ ok(rgxp.test(e), "Message correct: " + e);
+ }
+ }
+
+ typedArrayClasses = ['Uint8Array', 'Int8Array', 'Uint16Array', 'Int16Array',
+ 'Uint32Array', 'Int32Array', 'Float32Array', 'Float64Array',
+ 'Uint8ClampedArray'];
+ errorObjectClasses = ['Error', 'InternalError', 'EvalError', 'RangeError', 'ReferenceError',
+ 'SyntaxError', 'TypeError', 'URIError'];
+
+ // A simpleConstructors entry can either be the name of a constructor as a
+ // string, or an object containing the properties `name`, and `args`.
+ // In the former case, the constructor is invoked without any args; in the
+ // latter case, it is invoked with `args` as the arguments list.
+ simpleConstructors = ['Object', 'Function', 'Array', 'Boolean', 'Date', 'Number',
+ 'String', 'RegExp', 'ArrayBuffer', 'WeakMap', 'Map', 'Set',
+ {name: 'Promise', args: [function(){}]}].concat(typedArrayClasses)
+ .concat(errorObjectClasses);
+
+ function go() {
+ window.iwin = document.getElementById('ifr').contentWindow;
+
+ // Test constructors that can be instantiated with zero arguments, or with
+ // a fixed set of arguments provided using `...rest`.
+ for (var c of simpleConstructors) {
+ var args = [];
+ if (typeof c === 'object') {
+ args = c.args;
+ c = c.name;
+ }
+ ok(iwin[c], "Constructors appear: " + c);
+ is(iwin[c], Cu.unwaiveXrays(iwin.wrappedJSObject[c]),
+ "we end up with the appropriate constructor: " + c);
+ is(Cu.unwaiveXrays(Cu.waiveXrays(new iwin[c](...args)).constructor), iwin[c],
+ "constructor property is set up right: " + c);
+ let expectedProto = /Opaque/.test(new iwin[c](...args)) ? iwin['Object'].prototype
+ : iwin[c].prototype;
+ is(Object.getPrototypeOf(new iwin[c](...args)), expectedProto,
+ "prototype is correct: " + c);
+ is(global(new iwin[c](...args)), iwin, "Got the right global: " + c);
+ }
+
+ // Test Object in more detail.
+ var num = new iwin.Object(4);
+ is(Cu.waiveXrays(num).valueOf(), 4, "primitive object construction works");
+ is(global(num), iwin, "correct global for num");
+ var obj = new iwin.Object();
+ obj.foo = 2;
+ var withProto = Cu.unwaiveXrays(Cu.waiveXrays(iwin).Object.create(obj));
+ is(global(withProto), iwin, "correct global for withProto");
+ is(Cu.waiveXrays(withProto).foo, 2, "Inherits properly");
+
+ // Test Function.
+ var primitiveFun = new iwin.Function('return 2');
+ is(global(primitiveFun), iwin, "function construction works");
+ is(primitiveFun(), 2, "basic function works");
+ var doSetFoo = new iwin.Function('arg', 'arg.foo = 2;');
+ is(global(doSetFoo), iwin, "function with args works");
+ try {
+ doSetFoo(new Object());
+ ok(false, "should have thrown while setting property on object");
+ } catch (e) {
+ ok(!!/denied/.test(e), "Threw correctly: " + e);
+ }
+ var factoryFun = new iwin.Function('return {foo: 32}');
+ is(global(factoryFun), iwin, "proper global for factoryFun");
+ is(factoryFun().foo, 32, "factoryFun invokable");
+ is(global(factoryFun()), iwin, "minted objects live in the content scope");
+ testXray('Function', factoryFun, new iwin.Function(), ['length', 'name']);
+ var echoThis = new iwin.Function('return this;');
+ echoThis.wrappedJSObject.bind = 42;
+ var boundEchoThis = echoThis.bind(document);
+ is(boundEchoThis(), document, "bind() works correctly over Xrays");
+ is(global(boundEchoThis), window, "bound functions live in the caller's scope");
+ ok(/return this/.test(echoThis.toSource()), 'toSource works: ' + echoThis.toSource());
+ ok(/return this/.test(echoThis.toString()), 'toString works: ' + echoThis.toString());
+ is(iwin.Function.prototype, Object.getPrototypeOf(echoThis), "Function.prototype works for standard classes");
+ is(echoThis.prototype, undefined, "Function.prototype not visible for non standard constructors");
+ iwin.eval('var foopyFunction = function namedFoopyFunction(a, b, c) {}');
+ var foopyFunction = Cu.unwaiveXrays(Cu.waiveXrays(iwin).foopyFunction);
+ ok(Cu.isXrayWrapper(foopyFunction), "Should be Xrays");
+ is(foopyFunction.name, "namedFoopyFunction", ".name works over Xrays");
+ is(foopyFunction.length, 3, ".length works over Xrays");
+ ok(Object.getOwnPropertyNames(foopyFunction).indexOf('length') >= 0, "Should list length");
+ ok(Object.getOwnPropertyNames(foopyFunction).indexOf('name') >= 0, "Should list name");
+ ok(Object.getOwnPropertyNames(foopyFunction).indexOf('prototype') == -1, "Should not list prototype");
+ ok(Object.getOwnPropertyNames(iwin.Array).indexOf('prototype') >= 0, "Should list prototype for standard constructor");
+
+ // Test proxies.
+ var targetObject = new iwin.Object();
+ targetObject.foo = 9;
+ var forwardingProxy = new iwin.Proxy(targetObject, new iwin.Object());
+ is(global(forwardingProxy), iwin, "proxy global correct");
+ is(Cu.waiveXrays(forwardingProxy).foo, 9, "forwards correctly");
+
+ // Test eval.
+ var toEval = "({a: 2, b: {foo: 'bar'}, f: function() { return window; }})";
+ is(global(iwin.eval(toEval)), iwin, "eval creates objects in the correct global");
+ is(iwin.eval(toEval).b.foo, 'bar', "eval-ed object looks right");
+ is(Cu.waiveXrays(iwin.eval(toEval)).f(), Cu.waiveXrays(iwin), "evaled function works right");
+
+ testDate();
+
+ testObject();
+
+ testArray();
+
+ testTypedArrays();
+
+ testErrorObjects();
+
+ testRegExp();
+
+ testPromise();
+
+ testArrayBuffer();
+
+ // We could also test DataView and Iterator here for completeness, but it's
+ // more trouble than it's worth.
+
+ SimpleTest.finish();
+ }
+
+ // Maintain a static list of the properties that are available on each standard
+ // prototype, so that we make sure to audit any new ones to make sure they're
+ // Xray-safe.
+ //
+ // DO NOT CHANGE WTIHOUT REVIEW FROM AN XPCONNECT PEER.
+ var version = Cc["@mozilla.org/xre/app-info;1"].getService(Ci.nsIXULAppInfo).version;
+ var isNightlyBuild = version.endsWith("a1");
+ var isReleaseOrBeta = !version.includes("a");
+ var gPrototypeProperties = {};
+ var gConstructorProperties = {};
+ function constructorProps(arr) {
+ // Some props live on all constructors
+ return arr.concat(["prototype", "length", "name"]);
+ }
+ gPrototypeProperties['Date'] =
+ ["getTime", "getTimezoneOffset", "getYear", "getFullYear", "getUTCFullYear",
+ "getMonth", "getUTCMonth", "getDate", "getUTCDate", "getDay", "getUTCDay",
+ "getHours", "getUTCHours", "getMinutes", "getUTCMinutes", "getSeconds",
+ "getUTCSeconds", "getMilliseconds", "getUTCMilliseconds", "setTime",
+ "setYear", "setFullYear", "setUTCFullYear", "setMonth", "setUTCMonth",
+ "setDate", "setUTCDate", "setHours", "setUTCHours", "setMinutes",
+ "setUTCMinutes", "setSeconds", "setUTCSeconds", "setMilliseconds",
+ "setUTCMilliseconds", "toUTCString", "toLocaleFormat", "toLocaleString",
+ "toLocaleDateString", "toLocaleTimeString", "toDateString", "toTimeString",
+ "toISOString", "toJSON", "toSource", "toString", "valueOf", "constructor",
+ "toGMTString", Symbol.toPrimitive];
+ gConstructorProperties['Date'] = constructorProps(["UTC", "parse", "now"]);
+ gPrototypeProperties['Object'] =
+ ["constructor", "toSource", "toString", "toLocaleString", "valueOf", "watch",
+ "unwatch", "hasOwnProperty", "isPrototypeOf", "propertyIsEnumerable",
+ "__defineGetter__", "__defineSetter__", "__lookupGetter__", "__lookupSetter__",
+ "__proto__"];
+ gConstructorProperties['Object'] =
+ constructorProps(["setPrototypeOf", "getOwnPropertyDescriptor", "getOwnPropertyDescriptors",
+ "keys", "is", "defineProperty", "defineProperties", "create",
+ "getOwnPropertyNames", "getOwnPropertySymbols",
+ "preventExtensions", "freeze", "isFrozen", "seal",
+ "isSealed", "assign", "getPrototypeOf", "values",
+ "entries", "isExtensible"])
+ gPrototypeProperties['Array'] =
+ ["length", "toSource", "toString", "toLocaleString", "join", "reverse", "sort", "push",
+ "pop", "shift", "unshift", "splice", "concat", "slice", "lastIndexOf", "indexOf",
+ "includes", "forEach", "map", "reduce", "reduceRight", "filter", "some", "every", "find",
+ "findIndex", "copyWithin", "fill", Symbol.iterator, Symbol.unscopables, "entries", "keys",
+ "constructor"];
+ if (isNightlyBuild) {
+ gPrototypeProperties['Array'].push("values");
+ }
+ gConstructorProperties['Array'] =
+ constructorProps(["join", "reverse", "sort", "push", "pop", "shift",
+ "unshift", "splice", "concat", "slice", "isArray",
+ "lastIndexOf", "indexOf", "forEach", "map", "filter",
+ "every", "some", "reduce", "reduceRight", "from", "of",
+ Symbol.species]);
+ for (var c of typedArrayClasses) {
+ gPrototypeProperties[c] = ["constructor", "BYTES_PER_ELEMENT"];
+ gConstructorProperties[c] = constructorProps(["BYTES_PER_ELEMENT"]);
+ }
+ gPrototypeProperties['TypedArray'] =
+ ["length", "buffer", "byteLength", "byteOffset", Symbol.iterator, "subarray",
+ "set", "copyWithin", "find", "findIndex", "forEach","indexOf", "lastIndexOf", "includes",
+ "reverse", "join", "every", "some", "reduce", "reduceRight", "entries", "keys", "values",
+ "slice", "map", "filter"];
+ // There is no TypedArray constructor, looks like.
+ is(window.TypedArray, undefined, "If this ever changes, add to this test!");
+ for (var c of errorObjectClasses) {
+ gPrototypeProperties[c] = ["constructor", "name",
+ // We don't actually resolve these empty data properties
+ // onto the Xray prototypes, but we list them here to make
+ // the test happy.
+ "lineNumber", "columnNumber", "fileName", "message", "stack"];
+ gConstructorProperties[c] = constructorProps([]);
+ }
+ // toString and toSource only live on the parent proto (Error.prototype).
+ gPrototypeProperties['Error'].push('toString');
+ gPrototypeProperties['Error'].push('toSource');
+
+ gPrototypeProperties['Function'] =
+ ["constructor", "toSource", "toString", "apply", "call", "bind",
+ "isGenerator", "length", "name", "arguments", "caller", Symbol.hasInstance];
+ gConstructorProperties['Function'] = constructorProps([])
+
+ gPrototypeProperties['RegExp'] =
+ ["constructor", "toSource", "toString", "compile", "exec", "test",
+ Symbol.match, Symbol.replace, Symbol.search, Symbol.split,
+ "flags", "global", "ignoreCase", "multiline", "source", "sticky", "unicode",
+ "lastIndex"];
+ gConstructorProperties['RegExp'] =
+ constructorProps(["input", "lastMatch", "lastParen",
+ "leftContext", "rightContext", "$1", "$2", "$3", "$4",
+ "$5", "$6", "$7", "$8", "$9", "$_", "$&", "$+",
+ "$`", "$'", Symbol.species])
+
+ gPrototypeProperties['Promise'] =
+ ["constructor", "catch", "then", Symbol.toStringTag];
+ gConstructorProperties['Promise'] =
+ constructorProps(["resolve", "reject", "all", "race", Symbol.species]);
+
+ gPrototypeProperties['ArrayBuffer'] =
+ ["constructor", "byteLength", "slice", Symbol.toStringTag];
+ gConstructorProperties['ArrayBuffer'] =
+ constructorProps(["isView", "slice", Symbol.species]);
+
+ if (!isReleaseOrBeta) {
+ gPrototypeProperties['SharedArrayBuffer'] = ["constructor", "slice", "byteLength", Symbol.toStringTag];
+ gConstructorProperties['SharedArrayBuffer'] = constructorProps([Symbol.species]);
+ } else {
+ is(typeof SharedArrayBuffer, "undefined", "Enable tests!");
+ }
+
+ // Sort an array that may contain symbols as well as strings.
+ function sortProperties(arr) {
+ function sortKey(prop) {
+ return typeof prop + ":" + prop.toString();
+ }
+ arr.sort((a, b) => sortKey(a) < sortKey(b) ? -1 : +1);
+ }
+
+ // Sort all the lists so we don't need to mutate them later (or copy them
+ // again to sort them).
+ for (var c of Object.keys(gPrototypeProperties))
+ sortProperties(gPrototypeProperties[c]);
+ for (var c of Object.keys(gConstructorProperties))
+ sortProperties(gConstructorProperties[c]);
+
+ function filterOut(array, props) {
+ return array.filter(p => props.indexOf(p) == -1);
+ }
+
+ function isTypedArrayClass(classname) {
+ return typedArrayClasses.indexOf(classname) >= 0;
+ }
+
+ function propertyIsGetter(obj, name, classname) {
+ return !!Object.getOwnPropertyDescriptor(obj, name).get;
+ }
+
+ function testProtoCallables(protoCallables, xray, xrayProto, localProto) {
+ for (let name of protoCallables) {
+ info("Running tests for property: " + name);
+ // Test both methods and getter properties.
+ function lookupCallable(obj) {
+ let desc = null;
+ do {
+ desc = Object.getOwnPropertyDescriptor(obj, name);
+ obj = Object.getPrototypeOf(obj);
+ } while (!desc);
+ return desc.get || desc.value;
+ };
+ ok(xrayProto.hasOwnProperty(name), "proto should have the property as own");
+ ok(!xray.hasOwnProperty(name), "instance should not have the property as own");
+ let method = lookupCallable(xrayProto);
+ is(typeof method, 'function', "Methods from Xrays are functions");
+ is(global(method), window, "Methods from Xrays are local");
+ ok(method instanceof Function, "instanceof works on methods from Xrays");
+ is(lookupCallable(xrayProto), method, "Holder caching works properly");
+ is(lookupCallable(xray), method, "Proto props resolve on the instance");
+ let local = lookupCallable(localProto);
+ is(method.length, local.length, "Function.length identical");
+ if (method.length == 0) {
+ is(method.call(xray) + "", local.call(xray) + "",
+ "Xray and local method results stringify identically");
+
+ // If invoking this method returns something non-Xrayable, the
+ // stringification is going to return [object Opaque].
+ ok(!/Opaque/.test(method.call(xray)), "Method result is xrayable");
+ is(method.call(xray) + "",
+ lookupCallable(xray.wrappedJSObject).call(xray.wrappedJSObject) + "",
+ "Xray and waived method results stringify identically");
+ }
+ }
+ }
+
+ function testCtorCallables(ctorCallables, xrayCtor, localCtor) {
+ for (let name of ctorCallables) {
+ // Don't try to test Function.prototype, since that is in fact a callable
+ // but doesn't really do the things we expect callables to do here
+ // (e.g. it's in the wrong global, since it gets Xrayed itself).
+ if (name == "prototype" && localCtor.name == "Function") {
+ continue;
+ }
+ info(`Running tests for property: ${localCtor.name}.${name}`);
+ // Test both methods and getter properties.
+ function lookupCallable(obj) {
+ let desc = null;
+ do {
+ desc = Object.getOwnPropertyDescriptor(obj, name);
+ obj = Object.getPrototypeOf(obj);
+ } while (!desc);
+ return desc.get || desc.value;
+ };
+
+ ok(xrayCtor.hasOwnProperty(name), "ctor should have the property as own");
+ let method = lookupCallable(xrayCtor);
+ is(typeof method, 'function', "Methods from ctor Xrays are functions");
+ is(global(method), window, "Methods from ctor Xrays are local");
+ ok(method instanceof Function,
+ "instanceof works on methods from ctor Xrays");
+ is(lookupCallable(xrayCtor), method,
+ "Holder caching works properly on ctors");
+ let local = lookupCallable(localCtor);
+ is(method.length, local.length,
+ "Function.length identical for method from ctor");
+ // Don't try to do the return-value check on Date.now(), since there is
+ // absolutely no reason it should return the same value each time.
+ //
+ // Also don't try to do the return-value check on Regexp.lastMatch and
+ // Regexp["$&"] (which are aliases), because they get state off the global
+ // they live in, as far as I can tell, so testing them over Xrays will be
+ // wrong: on the Xray they will actaully get the lastMatch of _our_
+ // global, not the Xrayed one.
+ if (method.length == 0 &&
+ !(localCtor.name == "Date" && name == "now") &&
+ !(localCtor.name == "RegExp" && (name == "lastMatch" || name == "$&"))) {
+ is(method.call(xrayCtor) + "", local.call(xrayCtor) + "",
+ "Xray and local method results stringify identically on constructors");
+ is(method.call(xrayCtor) + "",
+ lookupCallable(xrayCtor.wrappedJSObject).call(xrayCtor.wrappedJSObject) + "",
+ "Xray and waived method results stringify identically");
+ }
+ }
+ }
+
+ function testXray(classname, xray, xray2, propsToSkip, ctorPropsToSkip = []) {
+ propsToSkip = propsToSkip || [];
+ let xrayProto = Object.getPrototypeOf(xray);
+ let localProto = window[classname].prototype;
+ let desiredProtoProps = Object.getOwnPropertyNames(localProto).sort();
+
+ is(desiredProtoProps.toSource(),
+ gPrototypeProperties[classname].filter(id => typeof id === "string").toSource(),
+ "A property on the " + classname +
+ " prototype has changed! You need a security audit from an XPConnect peer");
+ is(Object.getOwnPropertySymbols(localProto).map(uneval).sort().toSource(),
+ gPrototypeProperties[classname].filter(id => typeof id !== "string").map(uneval).sort().toSource(),
+ "A symbol-keyed property on the " + classname +
+ " prototype has been changed! You need a security audit from an XPConnect peer");
+
+ let protoProps = filterOut(desiredProtoProps, propsToSkip);
+ let protoCallables = protoProps.filter(name => propertyIsGetter(localProto, name, classname) ||
+ typeof localProto[name] == 'function' &&
+ name != 'constructor');
+ ok(protoCallables.length > 0, "Need something to test");
+ is(xrayProto, iwin[classname].prototype, "Xray proto is correct");
+ is(xrayProto, xray.__proto__, "Proto accessors agree");
+ var protoProto = classname == "Object" ? null : iwin.Object.prototype;
+ is(Object.getPrototypeOf(xrayProto), protoProto, "proto proto is correct");
+ testProtoCallables(protoCallables, xray, xrayProto, localProto);
+ is(Object.getOwnPropertyNames(xrayProto).sort().toSource(),
+ protoProps.toSource(), "getOwnPropertyNames works");
+ is(Object.getOwnPropertySymbols(xrayProto).map(uneval).sort().toSource(),
+ gPrototypeProperties[classname].filter(id => typeof id !== "string" && !propsToSkip.includes(id))
+ .map(uneval).sort().toSource(),
+ "getOwnPropertySymbols works");
+
+ is(xrayProto.constructor, iwin[classname], "constructor property works");
+
+ xrayProto.expando = 42;
+ is(xray.expando, 42, "Xrayed instances see proto expandos");
+ is(xray2.expando, 42, "Xrayed instances see proto expandos");
+
+ // Now test constructors
+ localCtor = window[classname];
+ xrayCtor = xrayProto.constructor;
+ // We already checked that this is the same as iwin[classname]
+
+ let desiredCtorProps =
+ Object.getOwnPropertyNames(localCtor).sort();
+ is(desiredCtorProps.toSource(),
+ gConstructorProperties[classname].filter(id => typeof id === "string").toSource(),
+ "A property on the " + classname +
+ " constructor has changed! You need a security audit from an XPConnect peer");
+ let desiredCtorSymbols =
+ Object.getOwnPropertySymbols(localCtor).map(uneval).sort()
+ is(desiredCtorSymbols.toSource(),
+ gConstructorProperties[classname].filter(id => typeof id !== "string").map(uneval).sort().toSource(),
+ "A symbol-keyed property on the " + classname +
+ " constructor has been changed! You need a security audit from an XPConnect peer");
+
+ let ctorProps = filterOut(desiredCtorProps, ctorPropsToSkip);
+ let ctorSymbols = filterOut(desiredCtorSymbols, ctorPropsToSkip.map(uneval));
+ let ctorCallables = ctorProps.filter(name => propertyIsGetter(localCtor, name, classname) ||
+ typeof localCtor[name] == 'function');
+ testCtorCallables(ctorCallables, xrayCtor, localCtor);
+ is(Object.getOwnPropertyNames(xrayCtor).sort().toSource(),
+ ctorProps.toSource(), "getOwnPropertyNames works on Xrayed ctors");
+ is(Object.getOwnPropertySymbols(xrayCtor).map(uneval).sort().toSource(),
+ ctorSymbols.toSource(), "getOwnPropertySymbols works on Xrayed ctors");
+ }
+
+ // We will need arraysEqual and testArrayIterators both in this global scope
+ // and in sandboxes, so define them as strings up front.
+ var arraysEqualSource = `function arraysEqual(arr1, arr2, reason) {
+ is(arr1.length, arr2.length, \`\${reason}; lengths should be equal\`)
+ for (var i = 0; i < arr1.length; ++i) {
+ if (Array.isArray(arr2[i])) {
+ arraysEqual(arr1[i], arr2[i], \`\${reason}; item at index \${i}\`);
+ } else {
+ is(arr1[i], arr2[i], \`\${reason}; item at index \${i} should be equal\`);
+ }
+ }
+ }`;
+ eval(arraysEqualSource);
+
+ var testArrayIteratorsSource = `
+ function testArrayIterators(arrayLike, equivalentArray, reason) {
+ arraysEqual([...arrayLike], equivalentArray, \`\${reason}; spread operator\`);
+ arraysEqual([...arrayLike.entries()], [...equivalentArray.entries()],
+ \`\${reason}; entries\`);
+ arraysEqual([...arrayLike.keys()], [...equivalentArray.keys()],
+ \`\${reason}; keys\`);
+ if (arrayLike.values) {
+ arraysEqual([...arrayLike.values()], equivalentArray,
+ \`\${reason}; values\`);
+ }
+
+ var forEachCopy = [];
+ arrayLike.forEach(function(arg) { forEachCopy.push(arg); });
+ arraysEqual(forEachCopy, equivalentArray, \`\${reason}; forEach copy\`);
+
+ var everyCopy = [];
+ arrayLike.every(function(arg) { everyCopy.push(arg); return true; });
+ arraysEqual(everyCopy, equivalentArray, \`\${reason}; every() copy\`);
+
+ var filterCopy = [];
+ var filterResult = arrayLike.filter(function(arg) {
+ filterCopy.push(arg);
+ return true;
+ });
+ arraysEqual(filterCopy, equivalentArray, \`\${reason}; filter copy\`);
+ arraysEqual([...filterResult], equivalentArray, \`\${reason}; filter result\`);
+
+ var findCopy = [];
+ arrayLike.find(function(arg) { findCopy.push(arg); return false; });
+ arraysEqual(findCopy, equivalentArray, \`\${reason}; find() copy\`);
+
+ var findIndexCopy = [];
+ arrayLike.findIndex(function(arg) { findIndexCopy.push(arg); return false; });
+ arraysEqual(findIndexCopy, equivalentArray, \`\${reason}; findIndex() copy\`);
+
+ var mapCopy = [];
+ var mapResult = arrayLike.map(function(arg) { mapCopy.push(arg); return arg});
+ arraysEqual(mapCopy, equivalentArray, \`\${reason}; map() copy\`);
+ arraysEqual([...mapResult], equivalentArray, \`\${reason}; map() result\`);
+
+ var reduceCopy = [];
+ arrayLike.reduce(function(_, arg) { reduceCopy.push(arg); }, 0);
+ arraysEqual(reduceCopy, equivalentArray, \`\${reason}; reduce() copy\`);
+
+ var reduceRightCopy = [];
+ arrayLike.reduceRight(function(_, arg) { reduceRightCopy.unshift(arg); }, 0);
+ arraysEqual(reduceRightCopy, equivalentArray, \`\${reason}; reduceRight() copy\`);
+
+ var someCopy = [];
+ arrayLike.some(function(arg) { someCopy.push(arg); return false; });
+ arraysEqual(someCopy, equivalentArray, \`\${reason}; some() copy\`);
+ }`;
+ eval(testArrayIteratorsSource);
+
+ function testDate() {
+ // toGMTString is handled oddly in the engine. We don't bother to support
+ // it over Xrays.
+ let propsToSkip = ['toGMTString'];
+
+ testXray('Date', new iwin.Date(), new iwin.Date(), propsToSkip);
+
+ // Test the self-hosted toLocaleString.
+ var d = new iwin.Date();
+ isnot(d.toLocaleString, Cu.unwaiveXrays(d.wrappedJSObject.toLocaleString), "Different function identities");
+ is(Cu.getGlobalForObject(d.toLocaleString), window, "Xray global is correct");
+ is(Cu.getGlobalForObject(d.wrappedJSObject.toLocaleString), iwin, "Underlying global is correct");
+ is(d.toLocaleString('de-DE'), d.wrappedJSObject.toLocaleString('de-DE'), "Results match");
+ }
+
+ var uniqueSymbol;
+
+ function testObject() {
+ testXray('Object', Cu.unwaiveXrays(Cu.waiveXrays(iwin).Object.create(new iwin.Object())),
+ new iwin.Object(), []);
+
+ // Construct an object full of tricky things.
+ let symbolProps = '';
+ uniqueSymbol = iwin.eval('var uniqueSymbol = Symbol("uniqueSymbol"); uniqueSymbol');
+ symbolProps = `, [uniqueSymbol]: 43,
+ [Symbol.for("registrySymbolProp")]: 44`;
+ var trickyObject =
+ iwin.eval(`(function() {
+ var o = new Object({
+ primitiveProp: 42, objectProp: { foo: 2 },
+ xoProp: top, hasOwnProperty: 10,
+ get getterProp() { return 2; },
+ set setterProp(x) { },
+ get getterSetterProp() { return 3; },
+ set getterSetterProp(x) { },
+ callableProp: function() { },
+ nonXrayableProp: new WeakMap()
+ ${symbolProps}
+ });
+ Object.defineProperty(o, "nonConfigurableGetterSetterProp",
+ { get: function() { return 5; }, set: function() {} });
+ return o;
+ })()`);
+ testTrickyObject(trickyObject);
+ }
+
+ function testArray() {
+ // The |length| property is generally very weird, especially with respect
+ // to its behavior on the prototype. Array.prototype is actually an Array
+ // instance, and therefore has a vestigial .length. But we don't want to
+ // show that over Xrays, and generally want .length to just appear as an
+ // |own| data property. So we add it to the ignore list here, and check it
+ // separately.
+ //
+ // |Symbol.unscopables| should in principle be exposed, but it is
+ // inconvenient (as it's a data property, unsupported by ClassSpec) and
+ // low value.
+ let propsToSkip = ['length', Symbol.unscopables];
+
+ testXray('Array', new iwin.Array(20), new iwin.Array(), propsToSkip);
+
+ let symbolProps = '';
+ uniqueSymbol = iwin.eval('var uniqueSymbol = Symbol("uniqueSymbol"); uniqueSymbol');
+ symbolProps = `trickyArray[uniqueSymbol] = 43;
+ trickyArray[Symbol.for("registrySymbolProp")] = 44;`;
+ var trickyArray =
+ iwin.eval(`var trickyArray = [];
+ trickyArray.primitiveProp = 42;
+ trickyArray.objectProp = { foo: 2 };
+ trickyArray.xoProp = top;
+ trickyArray.hasOwnProperty = 10;
+ Object.defineProperty(trickyArray, 'getterProp', { get: function() { return 2; }});
+ Object.defineProperty(trickyArray, 'setterProp', { set: function(x) {}});
+ Object.defineProperty(trickyArray, 'getterSetterProp', { get: function() { return 3; }, set: function(x) {}, configurable: true});
+ Object.defineProperty(trickyArray, 'nonConfigurableGetterSetterProp', { get: function() { return 5; }, set: function(x) {}});
+ trickyArray.callableProp = function() {};
+ trickyArray.nonXrayableProp = new WeakMap();
+ ${symbolProps}
+ trickyArray;`);
+
+ // Test indexed access.
+ trickyArray.wrappedJSObject[9] = "some indexed property";
+ is(trickyArray[9], "some indexed property", "indexed properties work correctly over Xrays");
+ is(trickyArray.length, 10, "Length works correctly over Xrays");
+ checkThrows(function() { "use strict"; delete trickyArray.length; }, /config/, "Can't delete non-configurable 'length' property");
+ delete trickyArray[9];
+ is(trickyArray[9], undefined, "Delete works correctly over Xrays");
+ is(trickyArray.wrappedJSObject[9], undefined, "Delete works correctly over Xrays (viewed via waiver)");
+ is(trickyArray.length, 10, "length doesn't change");
+ trickyArray[11] = "some other indexed property";
+ is(trickyArray.length, 12, "length now changes");
+ is(trickyArray.wrappedJSObject[11], "some other indexed property");
+ trickyArray.length = 0;
+ is(trickyArray.length, 0, "Setting length works over Xray");
+ is(trickyArray[11], undefined, "Setting length truncates over Xray");
+ Object.defineProperty(trickyArray, 'length', { configurable: false, enumerable: false, writable: false, value: 0 });
+ trickyArray[1] = "hi";
+ is(trickyArray.length, 0, "Length remains non-writable");
+ is(trickyArray[1], undefined, "Frozen length forbids new properties");
+ is(trickyArray instanceof iwin.Array, true, "instanceof should work across xray wrappers.");
+ testTrickyObject(trickyArray);
+
+ testArrayIterators(new iwin.Array(1, 1, 2, 3, 5), [1, 1, 2, 3, 5]);
+ }
+
+ // Parts of this function are kind of specific to testing Object, but we factor
+ // it out so that we can re-use the trickyObject stuff on Arrays.
+ function testTrickyObject(trickyObject) {
+
+ // Make sure it looks right under the hood.
+ is(trickyObject.wrappedJSObject.getterProp, 2, "Underlying object has getter");
+ is(Cu.unwaiveXrays(trickyObject.wrappedJSObject.xoProp), top, "Underlying object has xo property");
+
+ // Test getOwnPropertyNames.
+ var expectedNames = ['objectProp', 'primitiveProp'];
+ if (trickyObject instanceof iwin.Array)
+ expectedNames.push('length');
+ is(Object.getOwnPropertyNames(trickyObject).sort().toSource(),
+ expectedNames.sort().toSource(), "getOwnPropertyNames should be filtered correctly");
+ var expectedSymbols = [Symbol.for("registrySymbolProp"), uniqueSymbol];
+ is(Object.getOwnPropertySymbols(trickyObject).map(uneval).sort().toSource(),
+ expectedSymbols.map(uneval).sort().toSource(),
+ "getOwnPropertySymbols should be filtered correctly");
+
+ // Test that cloning uses the Xray view.
+ var cloned = Cu.cloneInto(trickyObject, this);
+ is(Object.getOwnPropertyNames(cloned).sort().toSource(),
+ expectedNames.sort().toSource(), "structured clone should use the Xray view");
+ is(Object.getOwnPropertySymbols(cloned).map(uneval).sort().toSource(),
+ "[]", "structured cloning doesn't clone symbol-keyed properties yet");
+
+ // Test iteration and in-place modification. Beware of 'expando', which is the property
+ // we placed on the xray proto.
+ var propCount = 0;
+ for (let prop in trickyObject) {
+ if (prop == 'primitiveProp')
+ trickyObject[prop] = trickyObject[prop] - 10;
+ if (prop != 'expando')
+ trickyObject[prop] = trickyObject[prop];
+ ++propCount;
+ }
+ is(propCount, 3, "Should iterate the correct number of times");
+
+ // Test Object.keys.
+ is(Object.keys(trickyObject).sort().toSource(),
+ ['objectProp', 'primitiveProp'].toSource(), "Object.keys should be filtered correctly");
+
+ // Test getOwnPropertyDescriptor.
+ is(trickyObject.primitiveProp, 32, "primitive prop works");
+ is(trickyObject.objectProp.foo, 2, "object prop works");
+ is(typeof trickyObject.callableProp, 'undefined', "filtering works correctly");
+ is(Object.getOwnPropertyDescriptor(trickyObject, 'primitiveProp').value, 32, "getOwnPropertyDescriptor works");
+ is(Object.getOwnPropertyDescriptor(trickyObject, 'xoProp'), undefined, "filtering works with getOwnPropertyDescriptor");
+
+ // Test defineProperty.
+
+ trickyObject.primitiveSetByXray = 'fourty two';
+ is(trickyObject.primitiveSetByXray, 'fourty two', "Can set primitive correctly over Xray (ready via Xray)");
+ is(trickyObject.wrappedJSObject.primitiveSetByXray, 'fourty two', "Can set primitive correctly over Xray (ready via Waiver)");
+
+ var newContentObject = iwin.eval('new Object({prop: 99, get getterProp() { return 2; }})');
+ trickyObject.objectSetByXray = newContentObject;
+ is(trickyObject.objectSetByXray.prop, 99, "Can set object correctly over Xray (ready via Xray)");
+ is(trickyObject.wrappedJSObject.objectSetByXray.prop, 99, "Can set object correctly over Xray (ready via Waiver)");
+ checkThrows(function() { trickyObject.rejectedProp = {foo: 33}}, /cross-origin object/,
+ "Should reject privileged object property definition");
+
+ // Test JSON.stringify.
+ var jsonStr = JSON.stringify(newContentObject);
+ ok(/prop/.test(jsonStr), "JSON stringification should work: " + jsonStr);
+
+ // Test deletion.
+ delete newContentObject.prop;
+ ok(!newContentObject.hasOwnProperty('prop'), "Deletion should work");
+ ok(!newContentObject.wrappedJSObject.hasOwnProperty('prop'), "Deletion should forward");
+ delete newContentObject.getterProp;
+ ok(newContentObject.wrappedJSObject.hasOwnProperty('getterProp'), "Deletion be no-op for filtered property");
+
+ // We should be able to overwrite an existing accessor prop and convert it
+ // to a value prop.
+ is(trickyObject.wrappedJSObject.getterSetterProp, 3, "Underlying object has getter");
+ is(trickyObject.getterSetterProp, undefined, "Filtering properly over Xray");
+ trickyObject.getterSetterProp = 'redefined';
+ is(trickyObject.getterSetterProp, 'redefined', "Redefinition works");
+ is(trickyObject.wrappedJSObject.getterSetterProp, 'redefined', "Redefinition forwards");
+
+ // We should NOT be able to overwrite an existing non-configurable accessor
+ // prop, though.
+ is(trickyObject.wrappedJSObject.nonConfigurableGetterSetterProp, 5,
+ "Underlying object has getter");
+ is(trickyObject.nonConfigurableGetterSetterProp, undefined,
+ "Filtering properly over Xray here too");
+ is((trickyObject.nonConfigurableGetterSetterProp = 'redefined'), 'redefined',
+ "Assigning to non-configurable prop should fail silently in non-strict mode");
+ checkThrows(function() {
+ "use strict";
+ trickyObject.nonConfigurableGetterSetterProp = 'redefined';
+ }, /config/, "Should throw when redefining non-configurable prop in strict mode");
+ is(trickyObject.nonConfigurableGetterSetterProp, undefined,
+ "Redefinition should have failed");
+ is(trickyObject.wrappedJSObject.nonConfigurableGetterSetterProp, 5,
+ "Redefinition really should have failed");
+
+ checkThrows(function() { trickyObject.hasOwnProperty = 33; }, /shadow/,
+ "Should reject shadowing of pre-existing inherited properties over Xrays");
+
+ checkThrows(function() { Object.defineProperty(trickyObject, 'rejectedProp', { get: function() {}}); },
+ /accessor property/, "Should reject accessor property definition");
+ }
+
+ function testTypedArrays() {
+ // We don't invoke testXray with %TypedArray%, because that function isn't
+ // set up to deal with "anonymous" dependent classes (that is, classes not
+ // visible as a global property, which %TypedArray% is not), and fixing it
+ // up is more trouble than it's worth.
+
+ var typedArrayProto = Object.getPrototypeOf(Int8Array.prototype);
+
+ var desiredInheritedProps = Object.getOwnPropertyNames(typedArrayProto).sort();
+ var inheritedProps =
+ filterOut(desiredInheritedProps, ["BYTES_PER_ELEMENT", "constructor"]);
+
+ var inheritedCallables =
+ inheritedProps.filter(name => (propertyIsGetter(typedArrayProto, name) ||
+ typeof typedArrayProto[name] === "function") &&
+ name !== "constructor");
+
+ for (var c of typedArrayClasses) {
+ var t = new iwin[c](10);
+ checkThrows(function() { t[2]; }, /performant/, "direct property-wise reading of typed arrays forbidden over Xrays");
+ checkThrows(function() { t[2] = 3; }, /performant/, "direct property-wise writing of typed arrays forbidden over Xrays");
+ var wesb = new Cu.Sandbox([iwin], {isWebExtensionContentScript: true});
+ wesb.t = t;
+ wesb.eval('t[2] = 3');
+ is(wesb.eval('t.wrappedJSObject[2]'), 3, "direct property-wise writing of typed arrays allowed for WebExtension content scripts");
+ is(wesb.eval('t[2]'), 3, "direct property-wise reading and writing of typed arrays allowed for WebExtensions content scripts");
+
+ t.wrappedJSObject[2] = 3;
+ is(t.wrappedJSObject[2], 3, "accessing elements over waivers works");
+ t.wrappedJSObject.expando = 'hi';
+ is(t.wrappedJSObject.expando, 'hi', "access expandos over waivers works");
+ is(Cu.cloneInto(t, window)[2], 3, "cloneInto works");
+ is(Cu.cloneInto(t, window).expando, undefined, "cloneInto does not copy expandos");
+ is(Object.getOwnPropertyNames(t).sort().toSource(),
+ '["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"]',
+ "Only indexed properties visible over Xrays");
+ Object.defineProperty(t.wrappedJSObject, 'length', {value: 42});
+ is(t.wrappedJSObject.length, 42, "Set tricky expando")
+ is(t.length, 10, "Length accessor works over Xrays")
+ is(t.byteLength, t.length * window[c].prototype.BYTES_PER_ELEMENT, "byteLength accessor works over Xrays")
+
+ // Can create TypedArray from content ArrayBuffer
+ var buffer = new iwin.ArrayBuffer(8);
+ eval(`new ${c}(buffer);`);
+
+ var xray = new iwin[c](0);
+ var xrayTypedArrayProto = Object.getPrototypeOf(Object.getPrototypeOf(xray));
+ testProtoCallables(inheritedCallables, new iwin[c](0), xrayTypedArrayProto, typedArrayProto);
+
+ // When testing iterators, make sure to do so from inside our web
+ // extension sandbox, since from chrome we can't poke their indices. Note
+ // that we have to actually recreate our functions that touch typed array
+ // indices inside the sandbox, not just export them, because otherwise
+ // they'll just run with our principal anyway.
+ //
+ // But we do want to export is(), since we want ours called.
+ wesb.eval(arraysEqualSource);
+ wesb.eval(testArrayIteratorsSource);
+ Cu.exportFunction(is, wesb,
+ { defineAs: "is" });
+ wesb.eval('testArrayIterators(t, [0, 0, 3, 0, 0, 0, 0, 0, 0, 0])');
+ }
+ }
+
+ function testErrorObjects() {
+ // We only invoke testXray with Error, because that function isn't set up
+ // to deal with dependent classes and fixing it up is more trouble than
+ // it's worth.
+ testXray('Error', new iwin.Error('some error message'), new iwin.Error(),
+ ['fileName', 'lineNumber', 'columnNumber', 'message']);
+
+ // Make sure that the dependent classes have their prototypes set up correctly.
+ for (let c of errorObjectClasses.filter(x => x != "Error")) {
+ var e = new iwin[c]('some message');
+ is(Object.getPrototypeOf(e).name, c, "Prototype has correct name");
+ is(Object.getPrototypeOf(Object.getPrototypeOf(e)), iwin.Error.prototype, "Dependent prototype set up correctly");
+ is(e.name, c, "Exception name inherited correctly");
+
+ function testProperty(name, criterion, goodReplacement, faultyReplacement) {
+ ok(criterion(e[name]), name + " property is correct: " + e[name]);
+ e.wrappedJSObject[name] = goodReplacement;
+ is(e[name], goodReplacement, name + " property ok after replacement: " + goodReplacement);
+ e.wrappedJSObject[name] = faultyReplacement;
+ is(e[name], undefined, name + " property censored after suspicious replacement");
+ }
+ testProperty('message', x => x == 'some message', 'some other message', 42);
+ testProperty('fileName', x => x == '', 'otherFilename.html', new iwin.Object());
+ testProperty('columnNumber', x => x == 1, 99, 99.5);
+ testProperty('lineNumber', x => x == 0, 50, 'foo');
+
+ // Note - an Exception newed via Xrays is going to have an empty stack given the
+ // current semantics and implementation. This tests the current behavior, but that
+ // may change in bug 1036527 or similar.
+ //
+ // Furthermore, xrays should always return an error's original stack, and
+ // not overwrite it.
+ var stack = e.stack;
+ ok(/^\s*$/.test(stack), "stack property should be correct");
+ e.wrappedJSObject.stack = "not a stack";
+ is(e.stack, stack, "Xrays should never get an overwritten stack property.");
+ }
+ }
+
+ function testRegExp() {
+ // RegExp statics are very weird, and in particular RegExp has static
+ // properties that have to do with the last regexp execution in the global.
+ // Xraying those makes no sense, so we just skip constructor properties for
+ // RegExp xrays.
+ // RegExp[@@species] is affected by above skip, but we don't fix it until
+ // compelling use-case appears, as supporting RegExp[@@species] while
+ // skipping other static properties makes things complicated.
+ let ctorPropsToSkip = ["input", "lastMatch", "lastParen",
+ "leftContext", "rightContext", "$1", "$2", "$3",
+ "$4", "$5", "$6", "$7", "$8", "$9", "$_", "$&",
+ "$+", "$`", "$'", Symbol.species];
+ testXray('RegExp', new iwin.RegExp('foo'), new iwin.RegExp(), [],
+ ctorPropsToSkip);
+
+ // Test the self-hosted |flags| property, toString, and toSource.
+ for (var flags of ["", "g", "i", "m", "y", "gimy"]) {
+ var re = new iwin.RegExp("foo", flags);
+ is(re.flags, re.wrappedJSObject.flags, "Results match");
+
+ isnot(re.toString, Cu.unwaiveXrays(re.wrappedJSObject.toString), "Different function identities");
+ is(Cu.getGlobalForObject(re.toString), window, "Xray global is correct");
+ is(Cu.getGlobalForObject(re.wrappedJSObject.toString), iwin, "Underlying global is correct");
+ is(re.toString(), re.wrappedJSObject.toString(), "Results match");
+
+ isnot(re.toSource, Cu.unwaiveXrays(re.wrappedJSObject.toSource), "Different function identities");
+ is(Cu.getGlobalForObject(re.toSource), window, "Xray global is correct");
+ is(Cu.getGlobalForObject(re.wrappedJSObject.toSource), iwin, "Underlying global is correct");
+ is(re.toSource(), re.wrappedJSObject.toSource(), "Results match");
+
+ // Test with modified flags accessors
+ iwin.eval(`
+var props = ["global", "ignoreCase", "multiline", "sticky", "source", "unicode"];
+var origDescs = {};
+for (var prop of props) {
+ origDescs[prop] = Object.getOwnPropertyDescriptor(RegExp.prototype, prop);
+ Object.defineProperty(RegExp.prototype, prop, {
+ get: function() {
+ throw new Error("modified accessor is called");
+ }
+ });
+}
+`);
+ try {
+ is(re.flags, flags, "Unmodified flags accessors are called");
+ is(re.toString(), "/foo/" + flags, "Unmodified flags and source accessors are called");
+ is(re.toSource(), "/foo/" + flags, "Unmodified flags and source accessors are called");
+ } finally {
+ iwin.eval(`
+for (var prop of props) {
+ Object.defineProperty(RegExp.prototype, prop, origDescs[prop]);
+}
+`);
+ }
+ }
+ }
+
+ // Note: this is a small set of basic tests. More in-depth tests are located
+ // in test_promise_xrays.html.
+ function testPromise() {
+ testXray('Promise', new iwin.Promise(function(){}), new iwin.Promise(function(){}));
+
+ // Test catch and then.
+ var pr = new iwin.Promise(function(){});
+ isnot(pr.catch, Cu.unwaiveXrays(pr.wrappedJSObject.catch), "Different function identities");
+ is(Cu.getGlobalForObject(pr.catch), window, "Xray global is correct");
+ is(Cu.getGlobalForObject(pr.wrappedJSObject.catch), iwin, "Underlying global is correct");
+
+ isnot(pr.then, Cu.unwaiveXrays(pr.wrappedJSObject.then), "Different function identities");
+ is(Cu.getGlobalForObject(pr.then), window, "Xray global is correct");
+ is(Cu.getGlobalForObject(pr.wrappedJSObject.then), iwin, "Underlying global is correct");
+ }
+
+ function testArrayBuffer() {
+ let constructors = ['ArrayBuffer'];
+
+ if (!isReleaseOrBeta) {
+ constructors.push('SharedArrayBuffer');
+ }
+
+ for (const c of constructors) {
+ testXray(c, new iwin[c](0), new iwin[c](12));
+
+ var t = new iwin[c](12);
+ is(t.byteLength, 12, `${c} byteLength is correct`);
+
+ is(t.slice(4).byteLength, 8, `${c} byteLength is correct after slicing`);
+ is(Cu.getGlobalForObject(t.slice(4)), iwin, "Slice results lives in the target compartment");
+ is(Object.getPrototypeOf(t.slice(4)), iwin[c].prototype, "Slice results proto lives in target compartment")
+
+ // SharedArrayBuffer does not have static slice method
+ if (c === 'ArrayBuffer') {
+ is(ArrayBuffer.slice(t, 4).byteLength, 8, `${c}.slice (deprecated) works`);
+ }
+
+ var i32Array = new Int32Array(t);
+ // i32Array is going to be created in the buffer's target compartment,
+ // but usually this is unobservable, because the proto is set to
+ // the current compartment's prototype.
+ // However Xrays ignore the object's proto and claim its proto is
+ // the default proto for that class in the relevant compartment,
+ // so see through this proto hack.
+ todo_is(Object.getPrototypeOf(i32Array), Int32Array.prototype, "Int32Array has correct proto");
+ is(i32Array.length, 3, `Int32Array created from Xray ${c} has the correct length`);
+ is(i32Array.buffer, t, "Int32Array has the correct buffer that we passed in");
+
+ i32Array = new iwin.Int32Array(t);
+ is(Object.getPrototypeOf(i32Array), iwin.Int32Array.prototype, "Xray Int32Array has correct proto");
+ is(i32Array.length, 3, `Xray Int32Array created from Xray ${c} has the correct length`);
+ is(i32Array.buffer, t, "Xray Int32Array has the correct buffer that we passed in");
+
+ t = (new iwin.Int32Array(2)).buffer;
+ is(t.byteLength, 8, `Can access ${c} returned by buffer property`);
+ }
+ }
+
+ ]]>
+ </script>
+ <iframe id="ifr" onload="go();" src="http://example.org/tests/js/xpconnect/tests/mochitest/file_empty.html" />
+</window>
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-28 08:52:16 +0000