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+/*
+Distributed under both the W3C Test Suite License [1] and the W3C
+3-clause BSD License [2]. To contribute to a W3C Test Suite, see the
+policies and contribution forms [3].
+
+[1] http://www.w3.org/Consortium/Legal/2008/04-testsuite-license
+[2] http://www.w3.org/Consortium/Legal/2008/03-bsd-license
+[3] http://www.w3.org/2004/10/27-testcases
+*/
+
+/* For user documentation see docs/idlharness.md */
+
+/**
+ * Notes for people who want to edit this file (not just use it as a library):
+ *
+ * Most of the interesting stuff happens in the derived classes of IdlObject,
+ * especially IdlInterface. The entry point for all IdlObjects is .test(),
+ * which is called by IdlArray.test(). An IdlObject is conceptually just
+ * "thing we want to run tests on", and an IdlArray is an array of IdlObjects
+ * with some additional data thrown in.
+ *
+ * The object model is based on what WebIDLParser.js produces, which is in turn
+ * based on its pegjs grammar. If you want to figure out what properties an
+ * object will have from WebIDLParser.js, the best way is to look at the
+ * grammar:
+ *
+ * https://github.com/darobin/webidl.js/blob/master/lib/grammar.peg
+ *
+ * So for instance:
+ *
+ * // interface definition
+ * interface
+ * = extAttrs:extendedAttributeList? S? "interface" S name:identifier w herit:ifInheritance? w "{" w mem:ifMember* w "}" w ";" w
+ * { return { type: "interface", name: name, inheritance: herit, members: mem, extAttrs: extAttrs }; }
+ *
+ * This means that an "interface" object will have a .type property equal to
+ * the string "interface", a .name property equal to the identifier that the
+ * parser found, an .inheritance property equal to either null or the result of
+ * the "ifInheritance" production found elsewhere in the grammar, and so on.
+ * After each grammatical production is a JavaScript function in curly braces
+ * that gets called with suitable arguments and returns some JavaScript value.
+ *
+ * (Note that the version of WebIDLParser.js we use might sometimes be
+ * out-of-date or forked.)
+ *
+ * The members and methods of the classes defined by this file are all at least
+ * briefly documented, hopefully.
+ */
+(function(){
+"use strict";
+/// Helpers ///
+function constValue (cnt) {
+ if (cnt.type === "null") return null;
+ if (cnt.type === "NaN") return NaN;
+ if (cnt.type === "Infinity") return cnt.negative ? -Infinity : Infinity;
+ return cnt.value;
+}
+
+function minOverloadLength(overloads) {
+ if (!overloads.length) {
+ return 0;
+ }
+
+ return overloads.map(function(attr) {
+ return attr.arguments ? attr.arguments.filter(function(arg) {
+ return !arg.optional && !arg.variadic;
+ }).length : 0;
+ })
+ .reduce(function(m, n) { return Math.min(m, n); });
+}
+
+/// IdlArray ///
+// Entry point
+self.IdlArray = function()
+//@{
+{
+ /**
+ * A map from strings to the corresponding named IdlObject, such as
+ * IdlInterface or IdlException. These are the things that test() will run
+ * tests on.
+ */
+ this.members = {};
+
+ /**
+ * A map from strings to arrays of strings. The keys are interface or
+ * exception names, and are expected to also exist as keys in this.members
+ * (otherwise they'll be ignored). This is populated by add_objects() --
+ * see documentation at the start of the file. The actual tests will be
+ * run by calling this.members[name].test_object(obj) for each obj in
+ * this.objects[name]. obj is a string that will be eval'd to produce a
+ * JavaScript value, which is supposed to be an object implementing the
+ * given IdlObject (interface, exception, etc.).
+ */
+ this.objects = {};
+
+ /**
+ * When adding multiple collections of IDLs one at a time, an earlier one
+ * might contain a partial interface or implements statement that depends
+ * on a later one. Save these up and handle them right before we run
+ * tests.
+ *
+ * .partials is simply an array of objects from WebIDLParser.js'
+ * "partialinterface" production. .implements maps strings to arrays of
+ * strings, such that
+ *
+ * A implements B;
+ * A implements C;
+ * D implements E;
+ *
+ * results in { A: ["B", "C"], D: ["E"] }.
+ */
+ this.partials = [];
+ this["implements"] = {};
+};
+
+//@}
+IdlArray.prototype.add_idls = function(raw_idls)
+//@{
+{
+ /** Entry point. See documentation at beginning of file. */
+ this.internal_add_idls(WebIDL2.parse(raw_idls));
+};
+
+//@}
+IdlArray.prototype.add_untested_idls = function(raw_idls)
+//@{
+{
+ /** Entry point. See documentation at beginning of file. */
+ var parsed_idls = WebIDL2.parse(raw_idls);
+ for (var i = 0; i < parsed_idls.length; i++)
+ {
+ parsed_idls[i].untested = true;
+ if ("members" in parsed_idls[i])
+ {
+ for (var j = 0; j < parsed_idls[i].members.length; j++)
+ {
+ parsed_idls[i].members[j].untested = true;
+ }
+ }
+ }
+ this.internal_add_idls(parsed_idls);
+};
+
+//@}
+IdlArray.prototype.internal_add_idls = function(parsed_idls)
+//@{
+{
+ /**
+ * Internal helper called by add_idls() and add_untested_idls().
+ * parsed_idls is an array of objects that come from WebIDLParser.js's
+ * "definitions" production. The add_untested_idls() entry point
+ * additionally sets an .untested property on each object (and its
+ * .members) so that they'll be skipped by test() -- they'll only be
+ * used for base interfaces of tested interfaces, return types, etc.
+ */
+ parsed_idls.forEach(function(parsed_idl)
+ {
+ if (parsed_idl.type == "interface" && parsed_idl.partial)
+ {
+ this.partials.push(parsed_idl);
+ return;
+ }
+
+ if (parsed_idl.type == "implements")
+ {
+ if (!(parsed_idl.target in this["implements"]))
+ {
+ this["implements"][parsed_idl.target] = [];
+ }
+ this["implements"][parsed_idl.target].push(parsed_idl["implements"]);
+ return;
+ }
+
+ parsed_idl.array = this;
+ if (parsed_idl.name in this.members)
+ {
+ throw "Duplicate identifier " + parsed_idl.name;
+ }
+ switch(parsed_idl.type)
+ {
+ case "interface":
+ this.members[parsed_idl.name] =
+ new IdlInterface(parsed_idl, /* is_callback = */ false);
+ break;
+
+ case "dictionary":
+ // Nothing to test, but we need the dictionary info around for type
+ // checks
+ this.members[parsed_idl.name] = new IdlDictionary(parsed_idl);
+ break;
+
+ case "typedef":
+ this.members[parsed_idl.name] = new IdlTypedef(parsed_idl);
+ break;
+
+ case "callback":
+ // TODO
+ console.log("callback not yet supported");
+ break;
+
+ case "enum":
+ this.members[parsed_idl.name] = new IdlEnum(parsed_idl);
+ break;
+
+ case "callback interface":
+ this.members[parsed_idl.name] =
+ new IdlInterface(parsed_idl, /* is_callback = */ true);
+ break;
+
+ default:
+ throw parsed_idl.name + ": " + parsed_idl.type + " not yet supported";
+ }
+ }.bind(this));
+};
+
+//@}
+IdlArray.prototype.add_objects = function(dict)
+//@{
+{
+ /** Entry point. See documentation at beginning of file. */
+ for (var k in dict)
+ {
+ if (k in this.objects)
+ {
+ this.objects[k] = this.objects[k].concat(dict[k]);
+ }
+ else
+ {
+ this.objects[k] = dict[k];
+ }
+ }
+};
+
+//@}
+IdlArray.prototype.prevent_multiple_testing = function(name)
+//@{
+{
+ /** Entry point. See documentation at beginning of file. */
+ this.members[name].prevent_multiple_testing = true;
+};
+
+//@}
+IdlArray.prototype.recursively_get_implements = function(interface_name)
+//@{
+{
+ /**
+ * Helper function for test(). Returns an array of things that implement
+ * interface_name, so if the IDL contains
+ *
+ * A implements B;
+ * B implements C;
+ * B implements D;
+ *
+ * then recursively_get_implements("A") should return ["B", "C", "D"].
+ */
+ var ret = this["implements"][interface_name];
+ if (ret === undefined)
+ {
+ return [];
+ }
+ for (var i = 0; i < this["implements"][interface_name].length; i++)
+ {
+ ret = ret.concat(this.recursively_get_implements(ret[i]));
+ if (ret.indexOf(ret[i]) != ret.lastIndexOf(ret[i]))
+ {
+ throw "Circular implements statements involving " + ret[i];
+ }
+ }
+ return ret;
+};
+
+//@}
+IdlArray.prototype.test = function()
+//@{
+{
+ /** Entry point. See documentation at beginning of file. */
+
+ // First merge in all the partial interfaces and implements statements we
+ // encountered.
+ this.partials.forEach(function(parsed_idl)
+ {
+ if (!(parsed_idl.name in this.members)
+ || !(this.members[parsed_idl.name] instanceof IdlInterface))
+ {
+ throw "Partial interface " + parsed_idl.name + " with no original interface";
+ }
+ if (parsed_idl.extAttrs)
+ {
+ parsed_idl.extAttrs.forEach(function(extAttr)
+ {
+ this.members[parsed_idl.name].extAttrs.push(extAttr);
+ }.bind(this));
+ }
+ parsed_idl.members.forEach(function(member)
+ {
+ this.members[parsed_idl.name].members.push(new IdlInterfaceMember(member));
+ }.bind(this));
+ }.bind(this));
+ this.partials = [];
+
+ for (var lhs in this["implements"])
+ {
+ this.recursively_get_implements(lhs).forEach(function(rhs)
+ {
+ var errStr = lhs + " implements " + rhs + ", but ";
+ if (!(lhs in this.members)) throw errStr + lhs + " is undefined.";
+ if (!(this.members[lhs] instanceof IdlInterface)) throw errStr + lhs + " is not an interface.";
+ if (!(rhs in this.members)) throw errStr + rhs + " is undefined.";
+ if (!(this.members[rhs] instanceof IdlInterface)) throw errStr + rhs + " is not an interface.";
+ this.members[rhs].members.forEach(function(member)
+ {
+ this.members[lhs].members.push(new IdlInterfaceMember(member));
+ }.bind(this));
+ }.bind(this));
+ }
+ this["implements"] = {};
+
+ // Now run test() on every member, and test_object() for every object.
+ for (var name in this.members)
+ {
+ this.members[name].test();
+ if (name in this.objects)
+ {
+ this.objects[name].forEach(function(str)
+ {
+ this.members[name].test_object(str);
+ }.bind(this));
+ }
+ }
+};
+
+//@}
+IdlArray.prototype.assert_type_is = function(value, type)
+//@{
+{
+ /**
+ * Helper function that tests that value is an instance of type according
+ * to the rules of WebIDL. value is any JavaScript value, and type is an
+ * object produced by WebIDLParser.js' "type" production. That production
+ * is fairly elaborate due to the complexity of WebIDL's types, so it's
+ * best to look at the grammar to figure out what properties it might have.
+ */
+ if (type.idlType == "any")
+ {
+ // No assertions to make
+ return;
+ }
+
+ if (type.nullable && value === null)
+ {
+ // This is fine
+ return;
+ }
+
+ if (type.array)
+ {
+ // TODO: not supported yet
+ return;
+ }
+
+ if (type.sequence)
+ {
+ assert_true(Array.isArray(value), "is not array");
+ if (!value.length)
+ {
+ // Nothing we can do.
+ return;
+ }
+ this.assert_type_is(value[0], type.idlType.idlType);
+ return;
+ }
+
+ type = type.idlType;
+
+ switch(type)
+ {
+ case "void":
+ assert_equals(value, undefined);
+ return;
+
+ case "boolean":
+ assert_equals(typeof value, "boolean");
+ return;
+
+ case "byte":
+ assert_equals(typeof value, "number");
+ assert_equals(value, Math.floor(value), "not an integer");
+ assert_true(-128 <= value && value <= 127, "byte " + value + " not in range [-128, 127]");
+ return;
+
+ case "octet":
+ assert_equals(typeof value, "number");
+ assert_equals(value, Math.floor(value), "not an integer");
+ assert_true(0 <= value && value <= 255, "octet " + value + " not in range [0, 255]");
+ return;
+
+ case "short":
+ assert_equals(typeof value, "number");
+ assert_equals(value, Math.floor(value), "not an integer");
+ assert_true(-32768 <= value && value <= 32767, "short " + value + " not in range [-32768, 32767]");
+ return;
+
+ case "unsigned short":
+ assert_equals(typeof value, "number");
+ assert_equals(value, Math.floor(value), "not an integer");
+ assert_true(0 <= value && value <= 65535, "unsigned short " + value + " not in range [0, 65535]");
+ return;
+
+ case "long":
+ assert_equals(typeof value, "number");
+ assert_equals(value, Math.floor(value), "not an integer");
+ assert_true(-2147483648 <= value && value <= 2147483647, "long " + value + " not in range [-2147483648, 2147483647]");
+ return;
+
+ case "unsigned long":
+ assert_equals(typeof value, "number");
+ assert_equals(value, Math.floor(value), "not an integer");
+ assert_true(0 <= value && value <= 4294967295, "unsigned long " + value + " not in range [0, 4294967295]");
+ return;
+
+ case "long long":
+ assert_equals(typeof value, "number");
+ return;
+
+ case "unsigned long long":
+ case "DOMTimeStamp":
+ assert_equals(typeof value, "number");
+ assert_true(0 <= value, "unsigned long long is negative");
+ return;
+
+ case "float":
+ case "double":
+ case "DOMHighResTimeStamp":
+ case "unrestricted float":
+ case "unrestricted double":
+ // TODO: distinguish these cases
+ assert_equals(typeof value, "number");
+ return;
+
+ case "DOMString":
+ case "ByteString":
+ case "USVString":
+ // TODO: https://github.com/w3c/testharness.js/issues/92
+ assert_equals(typeof value, "string");
+ return;
+
+ case "object":
+ assert_true(typeof value == "object" || typeof value == "function", "wrong type: not object or function");
+ return;
+ }
+
+ if (!(type in this.members))
+ {
+ throw "Unrecognized type " + type;
+ }
+
+ if (this.members[type] instanceof IdlInterface)
+ {
+ // We don't want to run the full
+ // IdlInterface.prototype.test_instance_of, because that could result
+ // in an infinite loop. TODO: This means we don't have tests for
+ // NoInterfaceObject interfaces, and we also can't test objects that
+ // come from another self.
+ assert_true(typeof value == "object" || typeof value == "function", "wrong type: not object or function");
+ if (value instanceof Object
+ && !this.members[type].has_extended_attribute("NoInterfaceObject")
+ && type in self)
+ {
+ assert_true(value instanceof self[type], "not instanceof " + type);
+ }
+ }
+ else if (this.members[type] instanceof IdlEnum)
+ {
+ assert_equals(typeof value, "string");
+ }
+ else if (this.members[type] instanceof IdlDictionary)
+ {
+ // TODO: Test when we actually have something to test this on
+ }
+ else if (this.members[type] instanceof IdlTypedef)
+ {
+ // TODO: Test when we actually have something to test this on
+ }
+ else
+ {
+ throw "Type " + type + " isn't an interface or dictionary";
+ }
+};
+//@}
+
+/// IdlObject ///
+function IdlObject() {}
+IdlObject.prototype.test = function()
+//@{
+{
+ /**
+ * By default, this does nothing, so no actual tests are run for IdlObjects
+ * that don't define any (e.g., IdlDictionary at the time of this writing).
+ */
+};
+
+//@}
+IdlObject.prototype.has_extended_attribute = function(name)
+//@{
+{
+ /**
+ * This is only meaningful for things that support extended attributes,
+ * such as interfaces, exceptions, and members.
+ */
+ return this.extAttrs.some(function(o)
+ {
+ return o.name == name;
+ });
+};
+
+//@}
+
+/// IdlDictionary ///
+// Used for IdlArray.prototype.assert_type_is
+function IdlDictionary(obj)
+//@{
+{
+ /**
+ * obj is an object produced by the WebIDLParser.js "dictionary"
+ * production.
+ */
+
+ /** Self-explanatory. */
+ this.name = obj.name;
+
+ /** An array of objects produced by the "dictionaryMember" production. */
+ this.members = obj.members;
+
+ /**
+ * The name (as a string) of the dictionary type we inherit from, or null
+ * if there is none.
+ */
+ this.base = obj.inheritance;
+}
+
+//@}
+IdlDictionary.prototype = Object.create(IdlObject.prototype);
+
+/// IdlInterface ///
+function IdlInterface(obj, is_callback) {
+ /**
+ * obj is an object produced by the WebIDLParser.js "exception" or
+ * "interface" production, as appropriate.
+ */
+
+ /** Self-explanatory. */
+ this.name = obj.name;
+
+ /** A back-reference to our IdlArray. */
+ this.array = obj.array;
+
+ /**
+ * An indicator of whether we should run tests on the (exception) interface
+ * object and (exception) interface prototype object. Tests on members are
+ * controlled by .untested on each member, not this.
+ */
+ this.untested = obj.untested;
+
+ /** An array of objects produced by the "ExtAttr" production. */
+ this.extAttrs = obj.extAttrs;
+
+ /** An array of IdlInterfaceMembers. */
+ this.members = obj.members.map(function(m){return new IdlInterfaceMember(m); });
+ if (this.has_extended_attribute("Unforgeable")) {
+ this.members
+ .filter(function(m) { return !m["static"] && (m.type == "attribute" || m.type == "operation"); })
+ .forEach(function(m) { return m.isUnforgeable = true; });
+ }
+
+ /**
+ * The name (as a string) of the type we inherit from, or null if there is
+ * none.
+ */
+ this.base = obj.inheritance;
+
+ this._is_callback = is_callback;
+}
+IdlInterface.prototype = Object.create(IdlObject.prototype);
+IdlInterface.prototype.is_callback = function()
+//@{
+{
+ return this._is_callback;
+};
+//@}
+
+IdlInterface.prototype.has_constants = function()
+//@{
+{
+ return this.members.some(function(member) {
+ return member.type === "const";
+ });
+};
+//@}
+
+IdlInterface.prototype.is_global = function()
+//@{
+{
+ return this.extAttrs.some(function(attribute) {
+ return attribute.name === "Global" ||
+ attribute.name === "PrimaryGlobal";
+ });
+};
+//@}
+
+IdlInterface.prototype.test = function()
+//@{
+{
+ if (this.has_extended_attribute("NoInterfaceObject"))
+ {
+ // No tests to do without an instance. TODO: We should still be able
+ // to run tests on the prototype object, if we obtain one through some
+ // other means.
+ return;
+ }
+
+ if (!this.untested)
+ {
+ // First test things to do with the exception/interface object and
+ // exception/interface prototype object.
+ this.test_self();
+ }
+ // Then test things to do with its members (constants, fields, attributes,
+ // operations, . . .). These are run even if .untested is true, because
+ // members might themselves be marked as .untested. This might happen to
+ // interfaces if the interface itself is untested but a partial interface
+ // that extends it is tested -- then the interface itself and its initial
+ // members will be marked as untested, but the members added by the partial
+ // interface are still tested.
+ this.test_members();
+};
+//@}
+
+IdlInterface.prototype.test_self = function()
+//@{
+{
+ test(function()
+ {
+ // This function tests WebIDL as of 2015-01-13.
+ // TODO: Consider [Exposed].
+
+ // "For every interface that is exposed in a given ECMAScript global
+ // environment and:
+ // * is a callback interface that has constants declared on it, or
+ // * is a non-callback interface that is not declared with the
+ // [NoInterfaceObject] extended attribute,
+ // a corresponding property MUST exist on the ECMAScript global object.
+ // The name of the property is the identifier of the interface, and its
+ // value is an object called the interface object.
+ // The property has the attributes { [[Writable]]: true,
+ // [[Enumerable]]: false, [[Configurable]]: true }."
+ if (this.is_callback() && !this.has_constants()) {
+ return;
+ }
+
+ // TODO: Should we test here that the property is actually writable
+ // etc., or trust getOwnPropertyDescriptor?
+ assert_own_property(self, this.name,
+ "self does not have own property " + format_value(this.name));
+ var desc = Object.getOwnPropertyDescriptor(self, this.name);
+ assert_false("get" in desc, "self's property " + format_value(this.name) + " has getter");
+ assert_false("set" in desc, "self's property " + format_value(this.name) + " has setter");
+ assert_true(desc.writable, "self's property " + format_value(this.name) + " is not writable");
+ assert_false(desc.enumerable, "self's property " + format_value(this.name) + " is enumerable");
+ assert_true(desc.configurable, "self's property " + format_value(this.name) + " is not configurable");
+
+ if (this.is_callback()) {
+ // "The internal [[Prototype]] property of an interface object for
+ // a callback interface MUST be the Object.prototype object."
+ assert_equals(Object.getPrototypeOf(self[this.name]), Object.prototype,
+ "prototype of self's property " + format_value(this.name) + " is not Object.prototype");
+
+ return;
+ }
+
+ // "The interface object for a given non-callback interface is a
+ // function object."
+ // "If an object is defined to be a function object, then it has
+ // characteristics as follows:"
+
+ // Its [[Prototype]] internal property is otherwise specified (see
+ // below).
+
+ // "* Its [[Get]] internal property is set as described in ECMA-262
+ // section 9.1.8."
+ // Not much to test for this.
+
+ // "* Its [[Construct]] internal property is set as described in
+ // ECMA-262 section 19.2.2.3."
+ // Tested below if no constructor is defined. TODO: test constructors
+ // if defined.
+
+ // "* Its @@hasInstance property is set as described in ECMA-262
+ // section 19.2.3.8, unless otherwise specified."
+ // TODO
+
+ // ES6 (rev 30) 19.1.3.6:
+ // "Else, if O has a [[Call]] internal method, then let builtinTag be
+ // "Function"."
+ assert_class_string(self[this.name], "Function", "class string of " + this.name);
+
+ // "The [[Prototype]] internal property of an interface object for a
+ // non-callback interface is determined as follows:"
+ var prototype = Object.getPrototypeOf(self[this.name]);
+ if (this.base) {
+ // "* If the interface inherits from some other interface, the
+ // value of [[Prototype]] is the interface object for that other
+ // interface."
+ var has_interface_object =
+ !this.array
+ .members[this.base]
+ .has_extended_attribute("NoInterfaceObject");
+ if (has_interface_object) {
+ assert_own_property(self, this.base,
+ 'should inherit from ' + this.base +
+ ', but self has no such property');
+ assert_equals(prototype, self[this.base],
+ 'prototype of ' + this.name + ' is not ' +
+ this.base);
+ }
+ } else {
+ // "If the interface doesn't inherit from any other interface, the
+ // value of [[Prototype]] is %FunctionPrototype% ([ECMA-262],
+ // section 6.1.7.4)."
+ assert_equals(prototype, Function.prototype,
+ "prototype of self's property " + format_value(this.name) + " is not Function.prototype");
+ }
+
+ if (!this.has_extended_attribute("Constructor")) {
+ // "The internal [[Call]] method of the interface object behaves as
+ // follows . . .
+ //
+ // "If I was not declared with a [Constructor] extended attribute,
+ // then throw a TypeError."
+ assert_throws(new TypeError(), function() {
+ self[this.name]();
+ }.bind(this), "interface object didn't throw TypeError when called as a function");
+ assert_throws(new TypeError(), function() {
+ new self[this.name]();
+ }.bind(this), "interface object didn't throw TypeError when called as a constructor");
+ }
+ }.bind(this), this.name + " interface: existence and properties of interface object");
+
+ if (!this.is_callback()) {
+ test(function() {
+ // This function tests WebIDL as of 2014-10-25.
+ // https://heycam.github.io/webidl/#es-interface-call
+
+ assert_own_property(self, this.name,
+ "self does not have own property " + format_value(this.name));
+
+ // "Interface objects for non-callback interfaces MUST have a
+ // property named “length” with attributes { [[Writable]]: false,
+ // [[Enumerable]]: false, [[Configurable]]: true } whose value is
+ // a Number."
+ assert_own_property(self[this.name], "length");
+ var desc = Object.getOwnPropertyDescriptor(self[this.name], "length");
+ assert_false("get" in desc, this.name + ".length has getter");
+ assert_false("set" in desc, this.name + ".length has setter");
+ assert_false(desc.writable, this.name + ".length is writable");
+ assert_false(desc.enumerable, this.name + ".length is enumerable");
+ assert_true(desc.configurable, this.name + ".length is not configurable");
+
+ var constructors = this.extAttrs
+ .filter(function(attr) { return attr.name == "Constructor"; });
+ var expected_length = minOverloadLength(constructors);
+ assert_equals(self[this.name].length, expected_length, "wrong value for " + this.name + ".length");
+ }.bind(this), this.name + " interface object length");
+ }
+
+ // TODO: Test named constructors if I find any interfaces that have them.
+
+ test(function()
+ {
+ // This function tests WebIDL as of 2015-01-21.
+ // https://heycam.github.io/webidl/#interface-object
+
+ if (this.is_callback() && !this.has_constants()) {
+ return;
+ }
+
+ assert_own_property(self, this.name,
+ "self does not have own property " + format_value(this.name));
+
+ if (this.is_callback()) {
+ assert_false("prototype" in self[this.name],
+ this.name + ' should not have a "prototype" property');
+ return;
+ }
+
+ // "An interface object for a non-callback interface must have a
+ // property named “prototype” with attributes { [[Writable]]: false,
+ // [[Enumerable]]: false, [[Configurable]]: false } whose value is an
+ // object called the interface prototype object. This object has
+ // properties that correspond to the regular attributes and regular
+ // operations defined on the interface, and is described in more detail
+ // in section 4.5.4 below."
+ assert_own_property(self[this.name], "prototype",
+ 'interface "' + this.name + '" does not have own property "prototype"');
+ var desc = Object.getOwnPropertyDescriptor(self[this.name], "prototype");
+ assert_false("get" in desc, this.name + ".prototype has getter");
+ assert_false("set" in desc, this.name + ".prototype has setter");
+ assert_false(desc.writable, this.name + ".prototype is writable");
+ assert_false(desc.enumerable, this.name + ".prototype is enumerable");
+ assert_false(desc.configurable, this.name + ".prototype is configurable");
+
+ // Next, test that the [[Prototype]] of the interface prototype object
+ // is correct. (This is made somewhat difficult by the existence of
+ // [NoInterfaceObject].)
+ // TODO: Aryeh thinks there's at least other place in this file where
+ // we try to figure out if an interface prototype object is
+ // correct. Consolidate that code.
+
+ // "The interface prototype object for a given interface A must have an
+ // internal [[Prototype]] property whose value is returned from the
+ // following steps:
+ // "If A is declared with the [Global] or [PrimaryGlobal] extended
+ // attribute, and A supports named properties, then return the named
+ // properties object for A, as defined in section 4.5.5 below.
+ // "Otherwise, if A is declared to inherit from another interface, then
+ // return the interface prototype object for the inherited interface.
+ // "Otherwise, if A is declared with the [ArrayClass] extended
+ // attribute, then return %ArrayPrototype% ([ECMA-262], section
+ // 6.1.7.4).
+ // "Otherwise, return %ObjectPrototype% ([ECMA-262], section 6.1.7.4).
+ // ([ECMA-262], section 15.2.4).
+ if (this.name === "Window") {
+ assert_class_string(Object.getPrototypeOf(self[this.name].prototype),
+ 'WindowProperties',
+ 'Class name for prototype of Window' +
+ '.prototype is not "WindowProperties"');
+ } else {
+ var inherit_interface, inherit_interface_has_interface_object;
+ if (this.base) {
+ inherit_interface = this.base;
+ inherit_interface_has_interface_object =
+ !this.array
+ .members[inherit_interface]
+ .has_extended_attribute("NoInterfaceObject");
+ } else if (this.has_extended_attribute('ArrayClass')) {
+ inherit_interface = 'Array';
+ inherit_interface_has_interface_object = true;
+ } else {
+ inherit_interface = 'Object';
+ inherit_interface_has_interface_object = true;
+ }
+ if (inherit_interface_has_interface_object) {
+ assert_own_property(self, inherit_interface,
+ 'should inherit from ' + inherit_interface + ', but self has no such property');
+ assert_own_property(self[inherit_interface], 'prototype',
+ 'should inherit from ' + inherit_interface + ', but that object has no "prototype" property');
+ assert_equals(Object.getPrototypeOf(self[this.name].prototype),
+ self[inherit_interface].prototype,
+ 'prototype of ' + this.name + '.prototype is not ' + inherit_interface + '.prototype');
+ } else {
+ // We can't test that we get the correct object, because this is the
+ // only way to get our hands on it. We only test that its class
+ // string, at least, is correct.
+ assert_class_string(Object.getPrototypeOf(self[this.name].prototype),
+ inherit_interface + 'Prototype',
+ 'Class name for prototype of ' + this.name +
+ '.prototype is not "' + inherit_interface + 'Prototype"');
+ }
+ }
+
+ // "The class string of an interface prototype object is the
+ // concatenation of the interface’s identifier and the string
+ // “Prototype”."
+ assert_class_string(self[this.name].prototype, this.name + "Prototype",
+ "class string of " + this.name + ".prototype");
+ // String() should end up calling {}.toString if nothing defines a
+ // stringifier.
+ if (!this.has_stringifier()) {
+ assert_equals(String(self[this.name].prototype), "[object " + this.name + "Prototype]",
+ "String(" + this.name + ".prototype)");
+ }
+ }.bind(this), this.name + " interface: existence and properties of interface prototype object");
+
+ test(function()
+ {
+ if (this.is_callback() && !this.has_constants()) {
+ return;
+ }
+
+ assert_own_property(self, this.name,
+ "self does not have own property " + format_value(this.name));
+
+ if (this.is_callback()) {
+ assert_false("prototype" in self[this.name],
+ this.name + ' should not have a "prototype" property');
+ return;
+ }
+
+ assert_own_property(self[this.name], "prototype",
+ 'interface "' + this.name + '" does not have own property "prototype"');
+
+ // "If the [NoInterfaceObject] extended attribute was not specified on
+ // the interface, then the interface prototype object must also have a
+ // property named “constructor” with attributes { [[Writable]]: true,
+ // [[Enumerable]]: false, [[Configurable]]: true } whose value is a
+ // reference to the interface object for the interface."
+ assert_own_property(self[this.name].prototype, "constructor",
+ this.name + '.prototype does not have own property "constructor"');
+ var desc = Object.getOwnPropertyDescriptor(self[this.name].prototype, "constructor");
+ assert_false("get" in desc, this.name + ".prototype.constructor has getter");
+ assert_false("set" in desc, this.name + ".prototype.constructor has setter");
+ assert_true(desc.writable, this.name + ".prototype.constructor is not writable");
+ assert_false(desc.enumerable, this.name + ".prototype.constructor is enumerable");
+ assert_true(desc.configurable, this.name + ".prototype.constructor in not configurable");
+ assert_equals(self[this.name].prototype.constructor, self[this.name],
+ this.name + '.prototype.constructor is not the same object as ' + this.name);
+ }.bind(this), this.name + ' interface: existence and properties of interface prototype object\'s "constructor" property');
+};
+
+//@}
+IdlInterface.prototype.test_member_const = function(member)
+//@{
+{
+ test(function()
+ {
+ if (this.is_callback() && !this.has_constants()) {
+ return;
+ }
+
+ assert_own_property(self, this.name,
+ "self does not have own property " + format_value(this.name));
+
+ // "For each constant defined on an interface A, there must be
+ // a corresponding property on the interface object, if it
+ // exists."
+ assert_own_property(self[this.name], member.name);
+ // "The value of the property is that which is obtained by
+ // converting the constant’s IDL value to an ECMAScript
+ // value."
+ assert_equals(self[this.name][member.name], constValue(member.value),
+ "property has wrong value");
+ // "The property has attributes { [[Writable]]: false,
+ // [[Enumerable]]: true, [[Configurable]]: false }."
+ var desc = Object.getOwnPropertyDescriptor(self[this.name], member.name);
+ assert_false("get" in desc, "property has getter");
+ assert_false("set" in desc, "property has setter");
+ assert_false(desc.writable, "property is writable");
+ assert_true(desc.enumerable, "property is not enumerable");
+ assert_false(desc.configurable, "property is configurable");
+ }.bind(this), this.name + " interface: constant " + member.name + " on interface object");
+ // "In addition, a property with the same characteristics must
+ // exist on the interface prototype object."
+ test(function()
+ {
+ if (this.is_callback() && !this.has_constants()) {
+ return;
+ }
+
+ assert_own_property(self, this.name,
+ "self does not have own property " + format_value(this.name));
+
+ if (this.is_callback()) {
+ assert_false("prototype" in self[this.name],
+ this.name + ' should not have a "prototype" property');
+ return;
+ }
+
+ assert_own_property(self[this.name], "prototype",
+ 'interface "' + this.name + '" does not have own property "prototype"');
+
+ assert_own_property(self[this.name].prototype, member.name);
+ assert_equals(self[this.name].prototype[member.name], constValue(member.value),
+ "property has wrong value");
+ var desc = Object.getOwnPropertyDescriptor(self[this.name], member.name);
+ assert_false("get" in desc, "property has getter");
+ assert_false("set" in desc, "property has setter");
+ assert_false(desc.writable, "property is writable");
+ assert_true(desc.enumerable, "property is not enumerable");
+ assert_false(desc.configurable, "property is configurable");
+ }.bind(this), this.name + " interface: constant " + member.name + " on interface prototype object");
+};
+
+
+//@}
+IdlInterface.prototype.test_member_attribute = function(member)
+//@{
+{
+ test(function()
+ {
+ if (this.is_callback() && !this.has_constants()) {
+ return;
+ }
+
+ assert_own_property(self, this.name,
+ "self does not have own property " + format_value(this.name));
+ assert_own_property(self[this.name], "prototype",
+ 'interface "' + this.name + '" does not have own property "prototype"');
+
+ if (member["static"]) {
+ assert_own_property(self[this.name], member.name,
+ "The interface object must have a property " +
+ format_value(member.name));
+ } else if (this.is_global()) {
+ assert_own_property(self, member.name,
+ "The global object must have a property " +
+ format_value(member.name));
+ assert_false(member.name in self[this.name].prototype,
+ "The prototype object must not have a property " +
+ format_value(member.name));
+
+ // Try/catch around the get here, since it can legitimately throw.
+ // If it does, we obviously can't check for equality with direct
+ // invocation of the getter.
+ var gotValue;
+ var propVal;
+ try {
+ propVal = self[member.name];
+ gotValue = true;
+ } catch (e) {
+ gotValue = false;
+ }
+ if (gotValue) {
+ var getter = Object.getOwnPropertyDescriptor(self, member.name).get;
+ assert_equals(typeof(getter), "function",
+ format_value(member.name) + " must have a getter");
+ assert_equals(propVal, getter.call(undefined),
+ "Gets on a global should not require an explicit this");
+ }
+ this.do_interface_attribute_asserts(self, member);
+ } else {
+ assert_true(member.name in self[this.name].prototype,
+ "The prototype object must have a property " +
+ format_value(member.name));
+
+ if (!member.has_extended_attribute("LenientThis")) {
+ assert_throws(new TypeError(), function() {
+ self[this.name].prototype[member.name];
+ }.bind(this), "getting property on prototype object must throw TypeError");
+ } else {
+ assert_equals(self[this.name].prototype[member.name], undefined,
+ "getting property on prototype object must return undefined");
+ }
+ this.do_interface_attribute_asserts(self[this.name].prototype, member);
+ }
+ }.bind(this), this.name + " interface: attribute " + member.name);
+};
+
+//@}
+IdlInterface.prototype.test_member_operation = function(member)
+//@{
+{
+ test(function()
+ {
+ if (this.is_callback() && !this.has_constants()) {
+ return;
+ }
+
+ assert_own_property(self, this.name,
+ "self does not have own property " + format_value(this.name));
+
+ if (this.is_callback()) {
+ assert_false("prototype" in self[this.name],
+ this.name + ' should not have a "prototype" property');
+ return;
+ }
+
+ assert_own_property(self[this.name], "prototype",
+ 'interface "' + this.name + '" does not have own property "prototype"');
+
+ // "For each unique identifier of an operation defined on the
+ // interface, there must be a corresponding property on the
+ // interface prototype object (if it is a regular operation) or
+ // the interface object (if it is a static operation), unless
+ // the effective overload set for that identifier and operation
+ // and with an argument count of 0 (for the ECMAScript language
+ // binding) has no entries."
+ //
+ var memberHolderObject;
+ if (member["static"]) {
+ assert_own_property(self[this.name], member.name,
+ "interface object missing static operation");
+ memberHolderObject = self[this.name];
+ } else if (this.is_global()) {
+ assert_own_property(self, member.name,
+ "global object missing non-static operation");
+ memberHolderObject = self;
+ } else {
+ assert_own_property(self[this.name].prototype, member.name,
+ "interface prototype object missing non-static operation");
+ memberHolderObject = self[this.name].prototype;
+ }
+
+ this.do_member_operation_asserts(memberHolderObject, member);
+ }.bind(this), this.name + " interface: operation " + member.name +
+ "(" + member.arguments.map(function(m) { return m.idlType.idlType; }) +
+ ")");
+};
+
+//@}
+IdlInterface.prototype.do_member_operation_asserts = function(memberHolderObject, member)
+//@{
+{
+ var operationUnforgeable = member.isUnforgeable;
+ var desc = Object.getOwnPropertyDescriptor(memberHolderObject, member.name);
+ // "The property has attributes { [[Writable]]: B,
+ // [[Enumerable]]: true, [[Configurable]]: B }, where B is false if the
+ // operation is unforgeable on the interface, and true otherwise".
+ assert_false("get" in desc, "property has getter");
+ assert_false("set" in desc, "property has setter");
+ assert_equals(desc.writable, !operationUnforgeable,
+ "property should be writable if and only if not unforgeable");
+ assert_true(desc.enumerable, "property is not enumerable");
+ assert_equals(desc.configurable, !operationUnforgeable,
+ "property should be configurable if and only if not unforgeable");
+ // "The value of the property is a Function object whose
+ // behavior is as follows . . ."
+ assert_equals(typeof memberHolderObject[member.name], "function",
+ "property must be a function");
+ // "The value of the Function object’s “length” property is
+ // a Number determined as follows:
+ // ". . .
+ // "Return the length of the shortest argument list of the
+ // entries in S."
+ assert_equals(memberHolderObject[member.name].length,
+ minOverloadLength(this.members.filter(function(m) {
+ return m.type == "operation" && m.name == member.name;
+ })),
+ "property has wrong .length");
+
+ // Make some suitable arguments
+ var args = member.arguments.map(function(arg) {
+ return create_suitable_object(arg.idlType);
+ });
+
+ // "Let O be a value determined as follows:
+ // ". . .
+ // "Otherwise, throw a TypeError."
+ // This should be hit if the operation is not static, there is
+ // no [ImplicitThis] attribute, and the this value is null.
+ //
+ // TODO: We currently ignore the [ImplicitThis] case. Except we manually
+ // check for globals, since otherwise we'll invoke window.close(). And we
+ // have to skip this test for anything that on the proto chain of "self",
+ // since that does in fact have implicit-this behavior.
+ if (!member["static"]) {
+ if (!this.is_global() &&
+ memberHolderObject[member.name] != self[member.name])
+ {
+ assert_throws(new TypeError(), function() {
+ memberHolderObject[member.name].apply(null, args);
+ }, "calling operation with this = null didn't throw TypeError");
+ }
+
+ // ". . . If O is not null and is also not a platform object
+ // that implements interface I, throw a TypeError."
+ //
+ // TODO: Test a platform object that implements some other
+ // interface. (Have to be sure to get inheritance right.)
+ assert_throws(new TypeError(), function() {
+ memberHolderObject[member.name].apply({}, args);
+ }, "calling operation with this = {} didn't throw TypeError");
+ }
+}
+
+//@}
+IdlInterface.prototype.test_member_stringifier = function(member)
+//@{
+{
+ test(function()
+ {
+ if (this.is_callback() && !this.has_constants()) {
+ return;
+ }
+
+ assert_own_property(self, this.name,
+ "self does not have own property " + format_value(this.name));
+
+ if (this.is_callback()) {
+ assert_false("prototype" in self[this.name],
+ this.name + ' should not have a "prototype" property');
+ return;
+ }
+
+ assert_own_property(self[this.name], "prototype",
+ 'interface "' + this.name + '" does not have own property "prototype"');
+
+ // ". . . the property exists on the interface prototype object."
+ var interfacePrototypeObject = self[this.name].prototype;
+ assert_own_property(self[this.name].prototype, "toString",
+ "interface prototype object missing non-static operation");
+
+ var stringifierUnforgeable = member.isUnforgeable;
+ var desc = Object.getOwnPropertyDescriptor(interfacePrototypeObject, "toString");
+ // "The property has attributes { [[Writable]]: B,
+ // [[Enumerable]]: true, [[Configurable]]: B }, where B is false if the
+ // stringifier is unforgeable on the interface, and true otherwise."
+ assert_false("get" in desc, "property has getter");
+ assert_false("set" in desc, "property has setter");
+ assert_equals(desc.writable, !stringifierUnforgeable,
+ "property should be writable if and only if not unforgeable");
+ assert_true(desc.enumerable, "property is not enumerable");
+ assert_equals(desc.configurable, !stringifierUnforgeable,
+ "property should be configurable if and only if not unforgeable");
+ // "The value of the property is a Function object, which behaves as
+ // follows . . ."
+ assert_equals(typeof interfacePrototypeObject.toString, "function",
+ "property must be a function");
+ // "The value of the Function object’s “length” property is the Number
+ // value 0."
+ assert_equals(interfacePrototypeObject.toString.length, 0,
+ "property has wrong .length");
+
+ // "Let O be the result of calling ToObject on the this value."
+ assert_throws(new TypeError(), function() {
+ self[this.name].prototype.toString.apply(null, []);
+ }, "calling stringifier with this = null didn't throw TypeError");
+
+ // "If O is not an object that implements the interface on which the
+ // stringifier was declared, then throw a TypeError."
+ //
+ // TODO: Test a platform object that implements some other
+ // interface. (Have to be sure to get inheritance right.)
+ assert_throws(new TypeError(), function() {
+ self[this.name].prototype.toString.apply({}, []);
+ }, "calling stringifier with this = {} didn't throw TypeError");
+ }.bind(this), this.name + " interface: stringifier");
+};
+
+//@}
+IdlInterface.prototype.test_members = function()
+//@{
+{
+ for (var i = 0; i < this.members.length; i++)
+ {
+ var member = this.members[i];
+ if (member.untested) {
+ continue;
+ }
+
+ switch (member.type) {
+ case "const":
+ this.test_member_const(member);
+ break;
+
+ case "attribute":
+ // For unforgeable attributes, we do the checks in
+ // test_interface_of instead.
+ if (!member.isUnforgeable)
+ {
+ this.test_member_attribute(member);
+ }
+ break;
+
+ case "operation":
+ // TODO: Need to correctly handle multiple operations with the same
+ // identifier.
+ // For unforgeable operations, we do the checks in
+ // test_interface_of instead.
+ if (member.name) {
+ if (!member.isUnforgeable)
+ {
+ this.test_member_operation(member);
+ }
+ } else if (member.stringifier) {
+ this.test_member_stringifier(member);
+ }
+ break;
+
+ default:
+ // TODO: check more member types.
+ break;
+ }
+ }
+};
+
+//@}
+IdlInterface.prototype.test_object = function(desc)
+//@{
+{
+ var obj, exception = null;
+ try
+ {
+ obj = eval(desc);
+ }
+ catch(e)
+ {
+ exception = e;
+ }
+
+ // TODO: WebIDLParser doesn't currently support named legacycallers, so I'm
+ // not sure what those would look like in the AST
+ var expected_typeof = this.members.some(function(member)
+ {
+ return member.legacycaller
+ || ("idlType" in member && member.idlType.legacycaller)
+ || ("idlType" in member && typeof member.idlType == "object"
+ && "idlType" in member.idlType && member.idlType.idlType == "legacycaller");
+ }) ? "function" : "object";
+
+ this.test_primary_interface_of(desc, obj, exception, expected_typeof);
+ var current_interface = this;
+ while (current_interface)
+ {
+ if (!(current_interface.name in this.array.members))
+ {
+ throw "Interface " + current_interface.name + " not found (inherited by " + this.name + ")";
+ }
+ if (current_interface.prevent_multiple_testing && current_interface.already_tested)
+ {
+ return;
+ }
+ current_interface.test_interface_of(desc, obj, exception, expected_typeof);
+ current_interface = this.array.members[current_interface.base];
+ }
+};
+
+//@}
+IdlInterface.prototype.test_primary_interface_of = function(desc, obj, exception, expected_typeof)
+//@{
+{
+ // We can't easily test that its prototype is correct if there's no
+ // interface object, or the object is from a different global environment
+ // (not instanceof Object). TODO: test in this case that its prototype at
+ // least looks correct, even if we can't test that it's actually correct.
+ if (!this.has_extended_attribute("NoInterfaceObject")
+ && (typeof obj != expected_typeof || obj instanceof Object))
+ {
+ test(function()
+ {
+ assert_equals(exception, null, "Unexpected exception when evaluating object");
+ assert_equals(typeof obj, expected_typeof, "wrong typeof object");
+ assert_own_property(self, this.name,
+ "self does not have own property " + format_value(this.name));
+ assert_own_property(self[this.name], "prototype",
+ 'interface "' + this.name + '" does not have own property "prototype"');
+
+ // "The value of the internal [[Prototype]] property of the
+ // platform object is the interface prototype object of the primary
+ // interface from the platform object’s associated global
+ // environment."
+ assert_equals(Object.getPrototypeOf(obj),
+ self[this.name].prototype,
+ desc + "'s prototype is not " + this.name + ".prototype");
+ }.bind(this), this.name + " must be primary interface of " + desc);
+ }
+
+ // "The class string of a platform object that implements one or more
+ // interfaces must be the identifier of the primary interface of the
+ // platform object."
+ test(function()
+ {
+ assert_equals(exception, null, "Unexpected exception when evaluating object");
+ assert_equals(typeof obj, expected_typeof, "wrong typeof object");
+ assert_class_string(obj, this.name, "class string of " + desc);
+ if (!this.has_stringifier())
+ {
+ assert_equals(String(obj), "[object " + this.name + "]", "String(" + desc + ")");
+ }
+ }.bind(this), "Stringification of " + desc);
+};
+
+//@}
+IdlInterface.prototype.test_interface_of = function(desc, obj, exception, expected_typeof)
+//@{
+{
+ // TODO: Indexed and named properties, more checks on interface members
+ this.already_tested = true;
+
+ for (var i = 0; i < this.members.length; i++)
+ {
+ var member = this.members[i];
+ if (member.type == "attribute" && member.isUnforgeable)
+ {
+ test(function()
+ {
+ assert_equals(exception, null, "Unexpected exception when evaluating object");
+ assert_equals(typeof obj, expected_typeof, "wrong typeof object");
+ this.do_interface_attribute_asserts(obj, member);
+ }.bind(this), this.name + " interface: " + desc + ' must have own property "' + member.name + '"');
+ }
+ else if (member.type == "operation" &&
+ member.name &&
+ member.isUnforgeable)
+ {
+ test(function()
+ {
+ assert_equals(exception, null, "Unexpected exception when evaluating object");
+ assert_equals(typeof obj, expected_typeof, "wrong typeof object");
+ assert_own_property(obj, member.name,
+ "Doesn't have the unforgeable operation property");
+ this.do_member_operation_asserts(obj, member);
+ }.bind(this), this.name + " interface: " + desc + ' must have own property "' + member.name + '"');
+ }
+ else if ((member.type == "const"
+ || member.type == "attribute"
+ || member.type == "operation")
+ && member.name)
+ {
+ test(function()
+ {
+ assert_equals(exception, null, "Unexpected exception when evaluating object");
+ assert_equals(typeof obj, expected_typeof, "wrong typeof object");
+ if (!member["static"]) {
+ if (!this.is_global()) {
+ assert_inherits(obj, member.name);
+ } else {
+ assert_own_property(obj, member.name);
+ }
+
+ if (member.type == "const")
+ {
+ assert_equals(obj[member.name], constValue(member.value));
+ }
+ if (member.type == "attribute")
+ {
+ // Attributes are accessor properties, so they might
+ // legitimately throw an exception rather than returning
+ // anything.
+ var property, thrown = false;
+ try
+ {
+ property = obj[member.name];
+ }
+ catch (e)
+ {
+ thrown = true;
+ }
+ if (!thrown)
+ {
+ this.array.assert_type_is(property, member.idlType);
+ }
+ }
+ if (member.type == "operation")
+ {
+ assert_equals(typeof obj[member.name], "function");
+ }
+ }
+ }.bind(this), this.name + " interface: " + desc + ' must inherit property "' + member.name + '" with the proper type (' + i + ')');
+ }
+ // TODO: This is wrong if there are multiple operations with the same
+ // identifier.
+ // TODO: Test passing arguments of the wrong type.
+ if (member.type == "operation" && member.name && member.arguments.length)
+ {
+ test(function()
+ {
+ assert_equals(exception, null, "Unexpected exception when evaluating object");
+ assert_equals(typeof obj, expected_typeof, "wrong typeof object");
+ if (!member["static"]) {
+ if (!this.is_global() && !member.isUnforgeable) {
+ assert_inherits(obj, member.name);
+ } else {
+ assert_own_property(obj, member.name);
+ }
+ }
+ else
+ {
+ assert_false(member.name in obj);
+ }
+
+ var minLength = minOverloadLength(this.members.filter(function(m) {
+ return m.type == "operation" && m.name == member.name;
+ }));
+ var args = [];
+ for (var i = 0; i < minLength; i++) {
+ assert_throws(new TypeError(), function()
+ {
+ obj[member.name].apply(obj, args);
+ }.bind(this), "Called with " + i + " arguments");
+
+ args.push(create_suitable_object(member.arguments[i].idlType));
+ }
+ }.bind(this), this.name + " interface: calling " + member.name +
+ "(" + member.arguments.map(function(m) { return m.idlType.idlType; }) +
+ ") on " + desc + " with too few arguments must throw TypeError");
+ }
+ }
+};
+
+//@}
+IdlInterface.prototype.has_stringifier = function()
+//@{
+{
+ if (this.members.some(function(member) { return member.stringifier; })) {
+ return true;
+ }
+ if (this.base &&
+ this.array.members[this.base].has_stringifier()) {
+ return true;
+ }
+ return false;
+};
+
+//@}
+IdlInterface.prototype.do_interface_attribute_asserts = function(obj, member)
+//@{
+{
+ // This function tests WebIDL as of 2015-01-27.
+ // TODO: Consider [Exposed].
+
+ // This is called by test_member_attribute() with the prototype as obj if
+ // it is not a global, and the global otherwise, and by test_interface_of()
+ // with the object as obj.
+
+ // "For each exposed attribute of the interface, whether it was declared on
+ // the interface itself or one of its consequential interfaces, there MUST
+ // exist a corresponding property. The characteristics of this property are
+ // as follows:"
+
+ // "The name of the property is the identifier of the attribute."
+ assert_own_property(obj, member.name);
+
+ // "The property has attributes { [[Get]]: G, [[Set]]: S, [[Enumerable]]:
+ // true, [[Configurable]]: configurable }, where:
+ // "configurable is false if the attribute was declared with the
+ // [Unforgeable] extended attribute and true otherwise;
+ // "G is the attribute getter, defined below; and
+ // "S is the attribute setter, also defined below."
+ var desc = Object.getOwnPropertyDescriptor(obj, member.name);
+ assert_false("value" in desc, 'property descriptor has value but is supposed to be accessor');
+ assert_false("writable" in desc, 'property descriptor has "writable" field but is supposed to be accessor');
+ assert_true(desc.enumerable, "property is not enumerable");
+ if (member.isUnforgeable)
+ {
+ assert_false(desc.configurable, "[Unforgeable] property must not be configurable");
+ }
+ else
+ {
+ assert_true(desc.configurable, "property must be configurable");
+ }
+
+
+ // "The attribute getter is a Function object whose behavior when invoked
+ // is as follows:"
+ assert_equals(typeof desc.get, "function", "getter must be Function");
+
+ // "If the attribute is a regular attribute, then:"
+ if (!member["static"]) {
+ // "If O is not a platform object that implements I, then:
+ // "If the attribute was specified with the [LenientThis] extended
+ // attribute, then return undefined.
+ // "Otherwise, throw a TypeError."
+ if (!member.has_extended_attribute("LenientThis")) {
+ assert_throws(new TypeError(), function() {
+ desc.get.call({});
+ }.bind(this), "calling getter on wrong object type must throw TypeError");
+ } else {
+ assert_equals(desc.get.call({}), undefined,
+ "calling getter on wrong object type must return undefined");
+ }
+ }
+
+ // "The value of the Function object’s “length” property is the Number
+ // value 0."
+ assert_equals(desc.get.length, 0, "getter length must be 0");
+
+
+ // TODO: Test calling setter on the interface prototype (should throw
+ // TypeError in most cases).
+ if (member.readonly
+ && !member.has_extended_attribute("PutForwards")
+ && !member.has_extended_attribute("Replaceable"))
+ {
+ // "The attribute setter is undefined if the attribute is declared
+ // readonly and has neither a [PutForwards] nor a [Replaceable]
+ // extended attribute declared on it."
+ assert_equals(desc.set, undefined, "setter must be undefined for readonly attributes");
+ }
+ else
+ {
+ // "Otherwise, it is a Function object whose behavior when
+ // invoked is as follows:"
+ assert_equals(typeof desc.set, "function", "setter must be function for PutForwards, Replaceable, or non-readonly attributes");
+
+ // "If the attribute is a regular attribute, then:"
+ if (!member["static"]) {
+ // "If /validThis/ is false and the attribute was not specified
+ // with the [LenientThis] extended attribute, then throw a
+ // TypeError."
+ // "If the attribute is declared with a [Replaceable] extended
+ // attribute, then: ..."
+ // "If validThis is false, then return."
+ if (!member.has_extended_attribute("LenientThis")) {
+ assert_throws(new TypeError(), function() {
+ desc.set.call({});
+ }.bind(this), "calling setter on wrong object type must throw TypeError");
+ } else {
+ assert_equals(desc.set.call({}), undefined,
+ "calling setter on wrong object type must return undefined");
+ }
+ }
+
+ // "The value of the Function object’s “length” property is the Number
+ // value 1."
+ assert_equals(desc.set.length, 1, "setter length must be 1");
+ }
+}
+//@}
+
+/// IdlInterfaceMember ///
+function IdlInterfaceMember(obj)
+//@{
+{
+ /**
+ * obj is an object produced by the WebIDLParser.js "ifMember" production.
+ * We just forward all properties to this object without modification,
+ * except for special extAttrs handling.
+ */
+ for (var k in obj)
+ {
+ this[k] = obj[k];
+ }
+ if (!("extAttrs" in this))
+ {
+ this.extAttrs = [];
+ }
+
+ this.isUnforgeable = this.has_extended_attribute("Unforgeable");
+}
+
+//@}
+IdlInterfaceMember.prototype = Object.create(IdlObject.prototype);
+
+/// Internal helper functions ///
+function create_suitable_object(type)
+//@{
+{
+ /**
+ * type is an object produced by the WebIDLParser.js "type" production. We
+ * return a JavaScript value that matches the type, if we can figure out
+ * how.
+ */
+ if (type.nullable)
+ {
+ return null;
+ }
+ switch (type.idlType)
+ {
+ case "any":
+ case "boolean":
+ return true;
+
+ case "byte": case "octet": case "short": case "unsigned short":
+ case "long": case "unsigned long": case "long long":
+ case "unsigned long long": case "float": case "double":
+ case "unrestricted float": case "unrestricted double":
+ return 7;
+
+ case "DOMString":
+ case "ByteString":
+ case "USVString":
+ return "foo";
+
+ case "object":
+ return {a: "b"};
+
+ case "Node":
+ return document.createTextNode("abc");
+ }
+ return null;
+}
+//@}
+
+/// IdlEnum ///
+// Used for IdlArray.prototype.assert_type_is
+function IdlEnum(obj)
+//@{
+{
+ /**
+ * obj is an object produced by the WebIDLParser.js "dictionary"
+ * production.
+ */
+
+ /** Self-explanatory. */
+ this.name = obj.name;
+
+ /** An array of values produced by the "enum" production. */
+ this.values = obj.values;
+
+}
+//@}
+
+IdlEnum.prototype = Object.create(IdlObject.prototype);
+
+/// IdlTypedef ///
+// Used for IdlArray.prototype.assert_type_is
+function IdlTypedef(obj)
+//@{
+{
+ /**
+ * obj is an object produced by the WebIDLParser.js "typedef"
+ * production.
+ */
+
+ /** Self-explanatory. */
+ this.name = obj.name;
+
+ /** An array of values produced by the "typedef" production. */
+ this.values = obj.values;
+
+}
+//@}
+
+IdlTypedef.prototype = Object.create(IdlObject.prototype);
+
+}());
+// vim: set expandtab shiftwidth=4 tabstop=4 foldmarker=@{,@} foldmethod=marker:
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 19:09:04 +0000