gecko/dom/imptests/idlharness.js
Ryan VanderMeulen e21d7c4218 Backed out changesets 715fce49a07b and abbc05319449 (bug 851916) for B2G mochitest-2 orange.
--HG--
rename : dom/imptests/webapps/DOMCore/tests/submissions/Ms2ger/ChildNode-remove.js => dom/imptests/webapps/DOMCore/tests/submissions/Ms2ger/test_ChildNode-remove.js
2013-04-04 12:02:50 -04:00

1791 lines
77 KiB
JavaScript
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/*
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
*/
/*
* This file automatically generates browser tests for WebIDL interfaces, using
* the testharness.js framework. To use, first include the following:
*
* <script src=/resources/testharness.js></script>
* <script src=/resources/testharnessreport.js></script>
* <script src=/resources/WebIDLParser.js></script>
* <script src=/resources/idlharness.js></script>
*
* Then you'll need some type of IDLs. Here's some script that can be run on a
* spec written in HTML, which will grab all the elements with class="idl",
* concatenate them, and replace the body so you can copy-paste:
*
var s = "";
[].forEach.call(document.getElementsByClassName("idl"), function(idl) {
//https://www.w3.org/Bugs/Public/show_bug.cgi?id=14914
if (!idl.classList.contains("extract"))
{
s += idl.textContent + "\n\n";
}
});
document.body.innerHTML = '<pre></pre>';
document.body.firstChild.textContent = s;
*
* (TODO: write this in Python or something so that it can be done from the
* command line instead.)
*
* Once you have that, put it in your script somehow. The easiest way is to
* embed it literally in an HTML file with <script type=text/plain> or similar,
* so that you don't have to do any escaping. Another possibility is to put it
* in a separate .idl file that's fetched via XHR or similar. Sample usage:
*
* var idl_array = new IdlArray();
* idl_array.add_untested_idls("interface Node { readonly attribute DOMString nodeName; };");
* idl_array.add_idls("interface Document : Node { readonly attribute DOMString URL; };");
* idl_array.add_objects({Document: ["document"]});
* idl_array.test();
*
* This tests that window.Document exists and meets all the requirements of
* WebIDL. It also tests that window.document (the result of evaluating the
* string "document") has URL and nodeName properties that behave as they
* should, and otherwise meets WebIDL's requirements for an object whose
* primary interface is Document. It does not test that window.Node exists,
* which is what you want if the Node interface is already tested in some other
* specification's suite and your specification only extends or refers to it.
* Of course, each IDL string can define many different things, and calls to
* add_objects() can register many different objects for different interfaces:
* this is a very simple example.
*
* TODO: Write assert_writable, assert_enumerable, assert_configurable and
* their inverses, and use those instead of just checking
* getOwnPropertyDescriptor.
*
* == Public methods of IdlArray ==
*
* IdlArray objects can be obtained with new IdlArray(). Anything not
* documented in this section should be considered an implementation detail,
* and outside callers should not use it.
*
* add_idls(idl_string):
* Parses idl_string (throwing on parse error) and adds the results to the
* IdlArray. All the definitions will be tested when you run test(). If
* some of the definitions refer to other definitions, those must be present
* too. For instance, if idl_string says that Document inherits from Node,
* the Node interface must also have been provided in some call to add_idls()
* or add_untested_idls().
*
* add_untested_idls(idl_string):
* Like add_idls(), but the definitions will not be tested. If an untested
* interface is added and then extended with a tested partial interface, the
* members of the partial interface will still be tested. Also, all the
* members will still be tested for objects added with add_objects(), because
* you probably want to test that (for instance) window.document has all the
* properties from Node, not just Document, even if the Node interface itself
* is tested in a different test suite.
*
* add_objects(dict):
* dict should be an object whose keys are the names of interfaces or
* exceptions, and whose values are arrays of strings. When an interface or
* exception is tested, every string registered for it with add_objects()
* will be evaluated, and tests will be run on the result to verify that it
* correctly implements that interface or exception. This is the only way to
* test anything about [NoInterfaceObject] interfaces, and there are many
* tests that can't be run on any interface without an object to fiddle with.
*
* The interface has to be the *primary* interface of all the objects
* provided. For example, don't pass {Node: ["document"]}, but rather
* {Document: ["document"]}. Assuming the Document interface was declared to
* inherit from Node, this will automatically test that document implements
* the Node interface too.
*
* Warning: methods will be called on any provided objects, in a manner that
* WebIDL requires be safe. For instance, if a method has mandatory
* arguments, the test suite will try calling it with too few arguments to
* see if it throws an exception. If an implementation incorrectly runs the
* function instead of throwing, this might have side effects, possibly even
* preventing the test suite from running correctly.
*
* prevent_multiple_testing(name):
* This is a niche method for use in case you're testing many objects that
* implement the same interfaces, and don't want to retest the same
* interfaces every single time. For instance, HTML defines many interfaces
* that all inherit from HTMLElement, so the HTML test suite has something
* like
* .add_objects({
* HTMLHtmlElement: ['document.documentElement'],
* HTMLHeadElement: ['document.head'],
* HTMLBodyElement: ['document.body'],
* ...
* })
* and so on for dozens of element types. This would mean that it would
* retest that each and every one of those elements implements HTMLElement,
* Element, and Node, which would be thousands of basically redundant tests.
* The test suite therefore calls prevent_multiple_testing("HTMLElement").
* This means that once one object has been tested to implement HTMLElement
* and its ancestors, no other object will be. Thus in the example code
* above, the harness would test that document.documentElement correctly
* implements HTMLHtmlElement, HTMLElement, Element, and Node; but
* document.head would only be tested for HTMLHeadElement, and so on for
* further objects.
*
* test():
* Run all tests. This should be called after you've called all other
* methods to add IDLs and objects.
*/
/**
* 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.
*/
"use strict";
(function(){
/// IdlArray ///
// Entry point
window.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(WebIDLParser.parse(raw_idls));
};
//@}
IdlArray.prototype.add_untested_idls = function(raw_idls)
//@{
{
/** Entry point. See documentation at beginning of file. */
var parsed_idls = WebIDLParser.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 == "partialinterface")
{
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);
break;
case "exception":
this.members[parsed_idl.name] = new IdlException(parsed_idl);
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":
// TODO
break;
case "enum":
// TODO
break;
case "callback":
// TODO
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)
{
if (!(lhs in this.members)
|| !(this.members[lhs] instanceof IdlInterface)
|| !(rhs in this.members)
|| !(this.members[rhs] instanceof IdlInterface))
{
throw lhs + " implements " + rhs + ", but one is undefined or 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":
assert_equals(typeof value, "number");
assert_true(0 <= value, "unsigned long long is negative");
return;
case "float":
case "double":
// TODO: distinguish these cases
assert_equals(typeof value, "number");
return;
case "DOMString":
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 window.
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 window)
{
assert_true(value instanceof window[type], "not instanceof " + type);
}
}
else if (this.members[type] instanceof IdlDictionary)
{
// 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.
*/
if (obj.inheritance.length > 1) {
throw "Multiple inheritance is no longer supported in WebIDL";
}
this.base = obj.inheritance.length ? obj.inheritance[0] : null;
}
//@}
IdlDictionary.prototype = Object.create(IdlObject.prototype);
/// IdlExceptionOrInterface ///
// Code sharing!
function IdlExceptionOrInterface(obj)
//@{
{
/**
* 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)});
/**
* The name (as a string) of the type we inherit from, or null if there is
* none.
*/
if (obj.inheritance.length > 1) {
throw "Multiple inheritance is no longer supported in WebIDL";
}
this.base = obj.inheritance.length ? obj.inheritance[0] : null;
}
//@}
IdlExceptionOrInterface.prototype = Object.create(IdlObject.prototype);
IdlExceptionOrInterface.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();
}
//@}
/// IdlException ///
function IdlException(obj) { IdlExceptionOrInterface.call(this, obj); }
IdlException.prototype = Object.create(IdlExceptionOrInterface.prototype);
IdlException.prototype.test_self = function()
//@{
{
test(function()
{
// "For every exception that is not declared with the
// [NoInterfaceObject] extended attribute, a corresponding property
// must exist on the exceptions relevant namespace object. The name of
// the property is the identifier of the exception, and its value is an
// object called the exception interface object, which provides access
// to any constants that have been associated with the exception. The
// property has the attributes { [[Writable]]: true, [[Enumerable]]:
// false, [[Configurable]]: true }."
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
var desc = Object.getOwnPropertyDescriptor(window, this.name);
assert_false("get" in desc, "window's property " + format_value(this.name) + " has getter");
assert_false("set" in desc, "window's property " + format_value(this.name) + " has setter");
assert_true(desc.writable, "window's property " + format_value(this.name) + " is not writable");
assert_false(desc.enumerable, "window's property " + format_value(this.name) + " is enumerable");
assert_true(desc.configurable, "window's property " + format_value(this.name) + " is not configurable");
// "The exception interface object for a given exception must be a
// function object."
// "If an object is defined to be a function object, then it has
// characteristics as follows:"
// "Its [[Prototype]] internal property is the Function prototype
// object."
// Note: This doesn't match browsers as of December 2011, see
// http://www.w3.org/Bugs/Public/show_bug.cgi?id=14813
assert_equals(Object.getPrototypeOf(window[this.name]), Function.prototype,
"prototype of window's property " + format_value(this.name) + " is not Function.prototype");
// "Its [[Get]] internal property is set as described in ECMA-262
// section 15.3.5.4."
// Not much to test for this.
// "Its [[Construct]] internal property is set as described in ECMA-262
// section 13.2.2."
// Tested below.
// "Its [[HasInstance]] internal property is set as described in
// ECMA-262 section 15.3.5.3, unless otherwise specified."
// TODO
// "Its [[Class]] internal property is “Function”."
// String() returns something implementation-dependent, because it
// calls Function#toString.
assert_class_string(window[this.name], "Function",
"class string of " + this.name);
// TODO: Test 4.9.1.1. Exception interface object [[Call]] method
// (which does not match browsers:
// http://www.w3.org/Bugs/Public/show_bug.cgi?id=14885)
}.bind(this), this.name + " exception: existence and properties of exception interface object");
test(function()
{
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
// "The exception interface object must also have a property named
// “prototype” with attributes { [[Writable]]: false, [[Enumerable]]:
// false, [[Configurable]]: false } whose value is an object called the
// exception interface prototype object. This object also provides
// access to the constants that are declared on the exception."
assert_own_property(window[this.name], "prototype",
'exception "' + this.name + '" does not have own property "prototype"');
var desc = Object.getOwnPropertyDescriptor(window[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");
// "The exception interface prototype object for a given exception must
// have an internal [[Prototype]] property whose value is as follows:
//
// "If the exception is declared to inherit from another exception,
// then the value of the internal [[Prototype]] property is the
// exception interface prototype object for the inherited exception.
// "Otherwise, the exception is not declared to inherit from another
// exception. The value of the internal [[Prototype]] property is the
// Error prototype object ([ECMA-262], section 15.11.3.1)."
//
// Note: This doesn't match browsers as of December 2011, see
// https://www.w3.org/Bugs/Public/show_bug.cgi?id=14887.
var inherit_exception = this.base ? this.base : "Error";
assert_own_property(window, inherit_exception,
'should inherit from ' + inherit_exception + ', but window has no such property');
assert_own_property(window[inherit_exception], "prototype",
'should inherit from ' + inherit_exception + ', but that object has no "prototype" property');
assert_equals(Object.getPrototypeOf(window[this.name].prototype),
window[inherit_exception].prototype,
'prototype of ' + this.name + '.prototype is not ' + inherit_exception + '.prototype');
// "The class string of an exception interface prototype object is the
// concatenation of the exceptions identifier and the string
// “Prototype”."
assert_class_string(window[this.name].prototype, this.name + "Prototype",
"class string of " + this.name + ".prototype");
// TODO: Test String(), based on ES definition of
// Error.prototype.toString?
}.bind(this), this.name + " exception: existence and properties of exception interface prototype object");
test(function()
{
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
assert_own_property(window[this.name], "prototype",
'interface "' + this.name + '" does not have own property "prototype"');
// "There must be a property named “name” on the exception interface
// prototype object with attributes { [[Writable]]: true,
// [[Enumerable]]: false, [[Configurable]]: true } and whose value is
// the identifier of the exception."
assert_own_property(window[this.name].prototype, "name",
'prototype object does not have own property "name"');
var desc = Object.getOwnPropertyDescriptor(window[this.name].prototype, "name");
assert_false("get" in desc, this.name + ".prototype.name has getter");
assert_false("set" in desc, this.name + ".prototype.name has setter");
assert_true(desc.writable, this.name + ".prototype.name is not writable");
assert_false(desc.enumerable, this.name + ".prototype.name is enumerable");
assert_true(desc.configurable, this.name + ".prototype.name is not configurable");
assert_equals(desc.value, this.name, this.name + ".prototype.name has incorrect value");
}.bind(this), this.name + " exception: existence and properties of exception interface prototype object's \"name\" property");
test(function()
{
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
assert_own_property(window[this.name], "prototype",
'interface "' + this.name + '" does not have own property "prototype"');
// "If the [NoInterfaceObject] extended attribute was not specified on
// the exception, then there must also be a property named
// “constructor” on the exception interface prototype object with
// attributes { [[Writable]]: true, [[Enumerable]]: false,
// [[Configurable]]: true } and whose value is a reference to the
// exception interface object for the exception."
assert_own_property(window[this.name].prototype, "constructor",
this.name + '.prototype does not have own property "constructor"');
var desc = Object.getOwnPropertyDescriptor(window[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(window[this.name].prototype.constructor, window[this.name],
this.name + '.prototype.constructor is not the same object as ' + this.name);
}.bind(this), this.name + " exception: existence and properties of exception interface prototype object's \"constructor\" property");
}
//@}
IdlException.prototype.test_members = function()
//@{
{
for (var i = 0; i < this.members.length; i++)
{
var member = this.members[i];
if (member.untested)
{
continue;
}
if (member.type == "const" && member.name != "prototype")
{
test(function()
{
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
// "For each constant defined on the exception, there must be a
// corresponding property on the exception interface object, if
// it exists, if the identifier of the constant is not
// “prototype”."
assert_own_property(window[this.name], member.name);
// "The value of the property is the ECMAScript value that is
// equivalent to the constants IDL value, according to the
// rules in section 4.2 above."
assert_equals(window[this.name][member.name], eval(member.value),
"property has wrong value");
// "The property has attributes { [[Writable]]: false,
// [[Enumerable]]: true, [[Configurable]]: false }."
var desc = Object.getOwnPropertyDescriptor(window[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 + " exception: constant " + member.name + " on exception interface object");
// "In addition, a property with the same characteristics must
// exist on the exception interface prototype object."
test(function()
{
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
assert_own_property(window[this.name], "prototype",
'exception "' + this.name + '" does not have own property "prototype"');
assert_own_property(window[this.name].prototype, member.name);
assert_equals(window[this.name].prototype[member.name], eval(member.value),
"property has wrong value");
var desc = Object.getOwnPropertyDescriptor(window[this.name].prototype, 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 + " exception: constant " + member.name + " on exception interface prototype object");
}
else if (member.type == "field")
{
test(function()
{
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
assert_own_property(window[this.name], "prototype",
'exception "' + this.name + '" does not have own property "prototype"');
// "For each exception field, there must be a corresponding
// property on the exception interface prototype object, whose
// characteristics are as follows:
// "The name of the property is the identifier of the exception
// field."
assert_own_property(window[this.name].prototype, member.name);
// "The property has attributes { [[Get]]: G, [[Enumerable]]:
// true, [[Configurable]]: true }, where G is the exception
// field getter, defined below."
var desc = Object.getOwnPropertyDescriptor(window[this.name].prototype, 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');
// TODO: ES5 doesn't seem to say whether desc should have a
// .set property.
assert_true(desc.enumerable, "property is not enumerable");
assert_true(desc.configurable, "property is not configurable");
// "The exception field getter is a Function object whose
// behavior when invoked is as follows:"
assert_equals(typeof desc.get, "function", "typeof getter");
// "The value of the Function objects “length” property is the
// Number value 0."
// This test is before the TypeError tests so that it's easiest
// to see that Firefox 11a1 only fails one assert in this test.
assert_equals(desc.get.length, 0, "getter length");
// "Let O be the result of calling ToObject on the this value.
// "If O is not a platform object representing an exception for
// the exception on which the exception field was declared,
// then throw a TypeError."
// TODO: Test on a platform object representing an exception.
assert_throws(new TypeError(), function()
{
window[this.name].prototype[member.name];
}.bind(this), "getting property on prototype object must throw TypeError");
assert_throws(new TypeError(), function()
{
desc.get.call({});
}.bind(this), "calling getter on wrong object type must throw TypeError");
}.bind(this), this.name + " exception: field " + member.name + " on exception interface prototype object");
}
}
}
//@}
IdlException.prototype.test_object = function(desc)
//@{
{
var obj, exception = null;
try
{
obj = eval(desc);
}
catch(e)
{
exception = e;
}
test(function()
{
assert_equals(exception, null, "Unexpected exception when evaluating object");
assert_equals(typeof obj, "object", "wrong typeof object");
// 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 != "object" || obj instanceof Object))
{
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
assert_own_property(window[this.name], "prototype",
'exception "' + this.name + '" does not have own property "prototype"');
// "The value of the internal [[Prototype]] property of the
// exception object must be the exception interface prototype
// object from the global environment the exception object is
// associated with."
assert_equals(Object.getPrototypeOf(obj),
window[this.name].prototype,
desc + "'s prototype is not " + this.name + ".prototype");
}
// "The class string of the exception object must be the identifier of
// the exception."
assert_class_string(obj, this.name, "class string of " + desc);
// Stringifier is not defined for DOMExceptions, because message isn't
// defined.
}.bind(this), this.name + " must be represented by " + desc);
for (var i = 0; i < this.members.length; i++)
{
var member = this.members[i];
test(function()
{
assert_equals(exception, null, "Unexpected exception when evaluating object");
assert_equals(typeof obj, "object", "wrong typeof object");
assert_inherits(obj, member.name);
if (member.type == "const")
{
assert_equals(obj[member.name], eval(member.value));
}
if (member.type == "field")
{
this.array.assert_type_is(obj[member.name], member.idlType);
}
}.bind(this), this.name + " exception: " + desc + ' must inherit property "' + member.name + '" with the proper type');
}
}
//@}
/// IdlInterface ///
function IdlInterface(obj) { IdlExceptionOrInterface.call(this, obj); }
IdlInterface.prototype = Object.create(IdlExceptionOrInterface.prototype);
IdlInterface.prototype.is_callback = function()
//@{
{
return this.has_extended_attribute("Callback");
}
//@}
IdlInterface.prototype.has_constants = function()
//@{
{
return this.members.some(function(member) {
return member.type === "const";
});
}
//@}
IdlInterface.prototype.test_self = function()
//@{
{
test(function()
{
// This function tests WebIDL as of 2012-11-28.
// "For every interface that:
// * 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(window, this.name,
"window does not have own property " + format_value(this.name));
var desc = Object.getOwnPropertyDescriptor(window, this.name);
assert_false("get" in desc, "window's property " + format_value(this.name) + " has getter");
assert_false("set" in desc, "window's property " + format_value(this.name) + " has setter");
assert_true(desc.writable, "window's property " + format_value(this.name) + " is not writable");
assert_false(desc.enumerable, "window's property " + format_value(this.name) + " is enumerable");
assert_true(desc.configurable, "window'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(window[this.name]), Object.prototype,
"prototype of window'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 the Function prototype
// object."
assert_equals(Object.getPrototypeOf(window[this.name]), Function.prototype,
"prototype of window's property " + format_value(this.name) + " is not Function.prototype");
// "* Its [[Get]] internal property is set as described in ECMA-262
// section 15.3.5.4."
// Not much to test for this.
// "* Its [[Construct]] internal property is set as described in
// ECMA-262 section 13.2.2."
// Tested below if no constructor is defined. TODO: test constructors
// if defined.
// "* Its [[HasInstance]] internal property is set as described in
// ECMA-262 section 15.3.5.3, unless otherwise specified."
// TODO
// "* Its [[NativeBrand]] internal property is “Function”."
// String() returns something implementation-dependent, because it calls
// Function#toString.
assert_class_string(window[this.name], "Function", "class string of " + this.name);
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() {
window[this.name]();
}.bind(this), "interface object didn't throw TypeError when called as a function");
assert_throws(new TypeError(), function() {
new window[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.has_extended_attribute("Constructor"))
{
test(function()
{
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
// "Interface objects for interfaces declared with a [Constructor]
// extended attribute must have a property named “length” with
// attributes { [[Writable]]: false, [[Enumerable]]: false,
// [[Configurable]]: false } whose value is a Number determined as
// follows: . . .
// "Return the length of the shortest argument list of the entries
// in S."
// TODO: Variadic constructors. Should generalize this so that it
// works for testing operation length too (currently we just don't
// support multiple operations with the same identifier).
var expected_length = this.extAttrs
.filter(function(attr) { return attr.name == "Constructor" })
.map(function(attr) {
return attr.arguments ? attr.arguments.filter(
function(arg) {
return !arg.optional;
}).length : 0
})
.reduce(function(m, n) { return Math.min(m, n) });
assert_own_property(window[this.name], "length");
assert_equals(window[this.name].length, expected_length, "wrong value for " + this.name + ".length");
var desc = Object.getOwnPropertyDescriptor(window[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_false(desc.configurable, this.name + ".length is configurable");
}.bind(this), this.name + " interface constructor");
}
// TODO: Test named constructors if I find any interfaces that have them.
test(function()
{
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
if (this.has_extended_attribute("Callback")) {
assert_false("prototype" in window[this.name],
this.name + ' should not have a "prototype" property');
return;
}
// "The interface object must also 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 attributes and operations defined on the
// interface, and is described in more detail in section 4.5.3 below."
assert_own_property(window[this.name], "prototype",
'interface "' + this.name + '" does not have own property "prototype"');
var desc = Object.getOwnPropertyDescriptor(window[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 as follows:
// "If A is not declared to inherit from another interface, then the
// value of the internal [[Prototype]] property of A is the Array
// prototype object ([ECMA-262], section 15.4.4) if the interface was
// declared with ArrayClass, or the Object prototype object otherwise
// ([ECMA-262], section 15.2.4).
// "Otherwise, A does inherit from another interface. The value of the
// internal [[Prototype]] property of A is the interface prototype
// object for the inherited interface."
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(window, inherit_interface,
'should inherit from ' + inherit_interface + ', but window has no such property');
assert_own_property(window[inherit_interface], 'prototype',
'should inherit from ' + inherit_interface + ', but that object has no "prototype" property');
assert_equals(Object.getPrototypeOf(window[this.name].prototype),
window[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(window[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 interfaces identifier and the string
// “Prototype”."
assert_class_string(window[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(window[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()
{
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
if (this.has_extended_attribute("Callback")) {
assert_false("prototype" in window[this.name],
this.name + ' should not have a "prototype" property');
return;
}
assert_own_property(window[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(window[this.name].prototype, "constructor",
this.name + '.prototype does not have own property "constructor"');
var desc = Object.getOwnPropertyDescriptor(window[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(window[this.name].prototype.constructor, window[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_members = function()
//@{
{
for (var i = 0; i < this.members.length; i++)
{
var member = this.members[i];
if (member.untested)
{
continue;
}
if (member.type == "const")
{
test(function()
{
assert_own_property(window, this.name,
"window 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(window[this.name], member.name);
// "The value of the property is that which is obtained by
// converting the constants IDL value to an ECMAScript
// value."
assert_equals(window[this.name][member.name], eval(member.value),
"property has wrong value");
// "The property has attributes { [[Writable]]: false,
// [[Enumerable]]: true, [[Configurable]]: false }."
var desc = Object.getOwnPropertyDescriptor(window[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()
{
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
if (this.has_extended_attribute("Callback")) {
assert_false("prototype" in window[this.name],
this.name + ' should not have a "prototype" property');
return;
}
assert_own_property(window[this.name], "prototype",
'interface "' + this.name + '" does not have own property "prototype"');
assert_own_property(window[this.name].prototype, member.name);
assert_equals(window[this.name].prototype[member.name], eval(member.value),
"property has wrong value");
var desc = Object.getOwnPropertyDescriptor(window[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");
}
else if (member.type == "attribute")
{
if (member.has_extended_attribute("Unforgeable"))
{
// We do the checks in test_interface_of instead
continue;
}
test(function()
{
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
assert_own_property(window[this.name], "prototype",
'interface "' + this.name + '" does not have own property "prototype"');
// TODO: Needs to test for LenientThis.
assert_throws(new TypeError(), function() {
window[this.name].prototype[member.name];
}.bind(this), "getting property on prototype object must throw TypeError");
do_interface_attribute_asserts(window[this.name].prototype, member);
}.bind(this), this.name + " interface: attribute " + member.name);
}
else if (member.type == "operation")
{
// TODO: Need to correctly handle multiple operations with the same
// identifier.
if (!member.name)
{
// Unnamed getter or such
continue;
}
test(function()
{
assert_own_property(window, this.name,
"window does not have own property " + format_value(this.name));
if (this.has_extended_attribute("Callback")) {
assert_false("prototype" in window[this.name],
this.name + ' should not have a "prototype" property');
return;
}
assert_own_property(window[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."
//
// TODO: The library doesn't seem to support static operations.
assert_own_property(window[this.name].prototype, member.name,
"interface prototype object missing non-static operation");
var desc = Object.getOwnPropertyDescriptor(window[this.name].prototype, member.name);
// "The property has attributes { [[Writable]]: true,
// [[Enumerable]]: true, [[Configurable]]: true }."
assert_false("get" in desc, "property has getter");
assert_false("set" in desc, "property has setter");
assert_true(desc.writable, "property is not writable");
assert_true(desc.enumerable, "property is not enumerable");
assert_true(desc.configurable, "property is not configurable");
// "The value of the property is a Function object whose
// behavior is as follows . . ."
assert_equals(typeof window[this.name].prototype[member.name], "function",
"property must be a function");
// "The value of the Function objects “length” property is
// a Number determined as follows:
// ". . .
// "Return the length of the shortest argument list of the
// entries in S."
//
// TODO: Doesn't handle overloading or variadic arguments.
assert_equals(window[this.name].prototype[member.name].length,
member.arguments.filter(function(arg) {
return !arg.optional;
}).length,
"property has wrong .length");
// Make some suitable arguments
var args = member.arguments.map(function(arg) {
return create_suitable_object(arg.type);
});
// "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 static and [ImplicitThis]
// cases.
assert_throws(new TypeError(), function() {
window[this.name].prototype[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() {
window[this.name].prototype[member.name].apply({}, args);
}, "calling operation with this = {} didn't throw TypeError");
}.bind(this), this.name + " interface: operation " + member.name +
"(" + member.arguments.map(function(m) { return m.type.idlType; }) +
")");
}
// TODO: check more member types, like stringifier
}
}
//@}
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(window, this.name,
"window does not have own property " + format_value(this.name));
assert_own_property(window[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 objects associated global
// environment."
assert_equals(Object.getPrototypeOf(obj),
window[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.has_extended_attribute("Unforgeable"))
{
test(function()
{
assert_equals(exception, null, "Unexpected exception when evaluating object");
assert_equals(typeof obj, expected_typeof, "wrong typeof object");
do_interface_attribute_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");
assert_inherits(obj, member.name);
if (member.type == "const")
{
assert_equals(obj[member.name], eval(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");
assert_inherits(obj, member.name);
var args = [];
for (var i = 0; i < member.arguments.length; i++)
{
if (member.arguments[i].optional)
{
break;
}
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].type));
}
}.bind(this), this.name + " interface: calling " + member.name +
"(" + member.arguments.map(function(m) { return m.type.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;
}
//@}
function do_interface_attribute_asserts(obj, member)
//@{
{
// "For each attribute defined on the interface, there must exist a
// corresponding property. If the attribute was declared with the
// [Unforgeable] extended attribute, then the property exists on every
// object that implements the interface. Otherwise, it exists on the
// interfaces interface prototype object."
//
// This is called by test_self() with the prototype as obj, and by
// test_interface_of() with the object as obj.
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.has_extended_attribute("Unforgeable"))
{
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:
// "...
// "The value of the Function objects “length” property is the Number
// value 0."
assert_equals(typeof desc.get, "function", "getter must be Function");
assert_equals(desc.get.length, 0, "getter length must be 0");
// TODO: Account for LenientThis
assert_throws(new TypeError(), function()
{
desc.get.call({});
}.bind(this), "calling getter on wrong object type must throw TypeError");
// TODO: Test calling setter on the interface prototype (should throw
// TypeError in most cases).
//
// "The attribute setter is undefined if the attribute is declared readonly
// and has neither a [PutForwards] nor a [Replaceable] extended attribute
// declared on it. Otherwise, it is a Function object whose behavior when
// invoked is as follows:
// "...
// "The value of the Function objects “length” property is the Number
// value 1."
if (member.readonly
&& !member.has_extended_attribute("PutForwards")
&& !member.has_extended_attribute("Replaceable"))
{
assert_equals(desc.set, undefined, "setter must be undefined for readonly attributes");
}
else
{
assert_equals(typeof desc.set, "function", "setter must be function for PutForwards, Replaceable, or non-readonly attributes");
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 = [];
}
}
//@}
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":
return 7;
case "DOMString":
return "foo";
case "object":
return {a: "b"};
case "Node":
return document.createTextNode("abc");
}
return null;
}
//@}
})();
// vim: set expandtab shiftwidth=4 tabstop=4 foldmarker=@{,@} foldmethod=marker: