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function test_constructor(ctor) {
test(function() {
var object = new window[ctor]();
assert_equals(Object.getPrototypeOf(object),
window[ctor].prototype, "Prototype chain: " + ctor);
assert_equals(Object.getPrototypeOf(Object.getPrototypeOf(object)),
CharacterData.prototype, "Prototype chain: CharacterData");
assert_equals(Object.getPrototypeOf(Object.getPrototypeOf(Object.getPrototypeOf(object))),
Node.prototype, "Prototype chain: Node");
}, "new " + ctor + "(): prototype chain");
test(function() {
var object = new window[ctor]();
assert_true(object instanceof Node, "Should be a Node");
assert_true(object instanceof CharacterData, "Should be a CharacterData");
assert_true(object instanceof window[ctor], "Should be a " + ctor);
}, "new " + ctor + "(): instanceof");
test(function() {
var object = new window[ctor]();
assert_equals(object.data, "");
assert_equals(object.nodeValue, "");
assert_equals(object.ownerDocument, document);
}, "new " + ctor + "(): no arguments");
var testArgs = [
[undefined, ""],
[null, "null"],
[42, "42"],
["", ""],
["-", "-"],
["--", "--"],
["-->", "-->"],
["<!--", "<!--"],
["\u0000", "\u0000"],
["\u0000test", "\u0000test"],
["&", "&"],
];
testArgs.forEach(function(a) {
var argument = a[0], expected = a[1];
test(function() {
var object = new window[ctor](argument);
assert_equals(object.data, expected);
assert_equals(object.nodeValue, expected);
assert_equals(object.ownerDocument, document);
}, "new " + ctor + "(): " + format_value(argument));
});
test(function() {
var called = [];
var object = new window[ctor]({
toString: function() {
called.push("first");
return "text";
}
}, {
toString: function() {
called.push("second");
assert_unreached("Should not look at the second argument.");
}
});
assert_equals(object.data, "text");
assert_equals(object.nodeValue, "text");
assert_equals(object.ownerDocument, document);
assert_array_equals(called, ["first"]);
}, "new " + ctor + "(): two arguments")
async_test("new " + ctor + "() should get the correct ownerDocument across globals").step(function() {
var iframe = document.createElement("iframe");
iframe.onload = this.step_func_done(function() {
var object = new iframe.contentWindow[ctor]();
assert_equals(object.ownerDocument, iframe.contentDocument);
});
document.body.appendChild(iframe);
});
}