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dom/imptests/testharness.js

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1 /*
2 Distributed under both the W3C Test Suite License [1] and the W3C
3 3-clause BSD License [2]. To contribute to a W3C Test Suite, see the
4 policies and contribution forms [3].
5
6 [1] http://www.w3.org/Consortium/Legal/2008/04-testsuite-license
7 [2] http://www.w3.org/Consortium/Legal/2008/03-bsd-license
8 [3] http://www.w3.org/2004/10/27-testcases
9 */
10
11 /*
12 * == Introduction ==
13 *
14 * This file provides a framework for writing testcases. It is intended to
15 * provide a convenient API for making common assertions, and to work both
16 * for testing synchronous and asynchronous DOM features in a way that
17 * promotes clear, robust, tests.
18 *
19 * == Basic Usage ==
20 *
21 * To use this file, import the script and the testharnessreport script into
22 * the test document:
23 * <script src="/resources/testharness.js"></script>
24 * <script src="/resources/testharnessreport.js"></script>
25 *
26 * Within each file one may define one or more tests. Each test is atomic
27 * in the sense that a single test has a single result (pass/fail/timeout).
28 * Within each test one may have a number of asserts. The test fails at the
29 * first failing assert, and the remainder of the test is (typically) not run.
30 *
31 * If the file containing the tests is a HTML file with an element of id "log"
32 * this will be populated with a table containing the test results after all
33 * the tests have run.
34 *
35 * NOTE: By default tests must be created before the load event fires. For ways
36 * to create tests after the load event, see "Determining when all tests
37 * are complete", below
38 *
39 * == Synchronous Tests ==
40 *
41 * To create a synchronous test use the test() function:
42 *
43 * test(test_function, name, properties)
44 *
45 * test_function is a function that contains the code to test. For example a
46 * trivial passing test would be:
47 *
48 * test(function() {assert_true(true)}, "assert_true with true")
49 *
50 * The function passed in is run in the test() call.
51 *
52 * properties is an object that overrides default test properties. The
53 * recognised properties are:
54 * timeout - the test timeout in ms
55 *
56 * e.g.
57 * test(test_function, "Sample test", {timeout:1000})
58 *
59 * would run test_function with a timeout of 1s.
60 *
61 * Additionally, test-specific metadata can be passed in the properties. These
62 * are used when the individual test has different metadata from that stored
63 * in the <head>.
64 * The recognized metadata properties are:
65 *
66 * help - The url of the part of the specification being tested
67 *
68 * assert - A human readable description of what the test is attempting
69 * to prove
70 *
71 * author - Name and contact information for the author of the test in the
72 * format: "Name <email_addr>" or "Name http://contact/url"
73 *
74 * == Asynchronous Tests ==
75 *
76 * Testing asynchronous features is somewhat more complex since the result of
77 * a test may depend on one or more events or other callbacks. The API provided
78 * for testing these features is indended to be rather low-level but hopefully
79 * applicable to many situations.
80 *
81 * To create a test, one starts by getting a Test object using async_test:
82 *
83 * async_test(name, properties)
84 *
85 * e.g.
86 * var t = async_test("Simple async test")
87 *
88 * Assertions can be added to the test by calling the step method of the test
89 * object with a function containing the test assertions:
90 *
91 * t.step(function() {assert_true(true)});
92 *
93 * When all the steps are complete, the done() method must be called:
94 *
95 * t.done();
96 *
97 * As a convenience, async_test can also takes a function as first argument.
98 * This function is called with the test object as both its `this` object and
99 * first argument. The above example can be rewritten as:
100 *
101 * async_test(function(t) {
102 * object.some_event = function() {
103 * t.step(function (){assert_true(true); t.done();});
104 * };
105 * }, "Simple async test");
106 *
107 * which avoids cluttering the global scope with references to async
108 * tests instances.
109 *
110 * The properties argument is identical to that for test().
111 *
112 * In many cases it is convenient to run a step in response to an event or a
113 * callback. A convenient method of doing this is through the step_func method
114 * which returns a function that, when called runs a test step. For example
115 *
116 * object.some_event = t.step_func(function(e) {assert_true(e.a)});
117 *
118 * == Making assertions ==
119 *
120 * Functions for making assertions start assert_
121 * The best way to get a list is to look in this file for functions names
122 * matching that pattern. The general signature is
123 *
124 * assert_something(actual, expected, description)
125 *
126 * although not all assertions precisely match this pattern e.g. assert_true
127 * only takes actual and description as arguments.
128 *
129 * The description parameter is used to present more useful error messages when
130 * a test fails
131 *
132 * NOTE: All asserts must be located in a test() or a step of an async_test().
133 * asserts outside these places won't be detected correctly by the harness
134 * and may cause a file to stop testing.
135 *
136 * == Harness Timeout ==
137 *
138 * The overall harness admits two timeout values "normal" (the
139 * default) and "long", used for tests which have an unusually long
140 * runtime. After the timeout is reached, the harness will stop
141 * waiting for further async tests to complete. By default the
142 * timeouts are set to 10s and 60s, respectively, but may be changed
143 * when the test is run on hardware with different performance
144 * characteristics to a common desktop computer. In order to opt-in
145 * to the longer test timeout, the test must specify a meta element:
146 * <meta name="timeout" content="long">
147 *
148 * == Setup ==
149 *
150 * Sometimes tests require non-trivial setup that may fail. For this purpose
151 * there is a setup() function, that may be called with one or two arguments.
152 * The two argument version is:
153 *
154 * setup(func, properties)
155 *
156 * The one argument versions may omit either argument.
157 * func is a function to be run synchronously. setup() becomes a no-op once
158 * any tests have returned results. Properties are global properties of the test
159 * harness. Currently recognised properties are:
160 *
161 *
162 * explicit_done - Wait for an explicit call to done() before declaring all
163 * tests complete (see below)
164 *
165 * output_document - The document to which results should be logged. By default
166 * this is the current document but could be an ancestor
167 * document in some cases e.g. a SVG test loaded in an HTML
168 * wrapper
169 *
170 * explicit_timeout - disable file timeout; only stop waiting for results
171 * when the timeout() function is called (typically for
172 * use when integrating with some existing test framework
173 * that has its own timeout mechanism).
174 *
175 * allow_uncaught_exception - don't treat an uncaught exception as an error;
176 * needed when e.g. testing the window.onerror
177 * handler.
178 *
179 * timeout_multiplier - Multiplier to apply to per-test timeouts.
180 *
181 * == Determining when all tests are complete ==
182 *
183 * By default the test harness will assume there are no more results to come
184 * when:
185 * 1) There are no Test objects that have been created but not completed
186 * 2) The load event on the document has fired
187 *
188 * This behaviour can be overridden by setting the explicit_done property to
189 * true in a call to setup(). If explicit_done is true, the test harness will
190 * not assume it is done until the global done() function is called. Once done()
191 * is called, the two conditions above apply like normal.
192 *
193 * == Generating tests ==
194 *
195 * NOTE: this functionality may be removed
196 *
197 * There are scenarios in which is is desirable to create a large number of
198 * (synchronous) tests that are internally similar but vary in the parameters
199 * used. To make this easier, the generate_tests function allows a single
200 * function to be called with each set of parameters in a list:
201 *
202 * generate_tests(test_function, parameter_lists, properties)
203 *
204 * For example:
205 *
206 * generate_tests(assert_equals, [
207 * ["Sum one and one", 1+1, 2],
208 * ["Sum one and zero", 1+0, 1]
209 * ])
210 *
211 * Is equivalent to:
212 *
213 * test(function() {assert_equals(1+1, 2)}, "Sum one and one")
214 * test(function() {assert_equals(1+0, 1)}, "Sum one and zero")
215 *
216 * Note that the first item in each parameter list corresponds to the name of
217 * the test.
218 *
219 * The properties argument is identical to that for test(). This may be a
220 * single object (used for all generated tests) or an array.
221 *
222 * == Callback API ==
223 *
224 * The framework provides callbacks corresponding to 3 events:
225 *
226 * start - happens when the first Test is created
227 * result - happens when a test result is recieved
228 * complete - happens when all results are recieved
229 *
230 * The page defining the tests may add callbacks for these events by calling
231 * the following methods:
232 *
233 * add_start_callback(callback) - callback called with no arguments
234 * add_result_callback(callback) - callback called with a test argument
235 * add_completion_callback(callback) - callback called with an array of tests
236 * and an status object
237 *
238 * tests have the following properties:
239 * status: A status code. This can be compared to the PASS, FAIL, TIMEOUT and
240 * NOTRUN properties on the test object
241 * message: A message indicating the reason for failure. In the future this
242 * will always be a string
243 *
244 * The status object gives the overall status of the harness. It has the
245 * following properties:
246 * status: Can be compared to the OK, ERROR and TIMEOUT properties
247 * message: An error message set when the status is ERROR
248 *
249 * == External API ==
250 *
251 * In order to collect the results of multiple pages containing tests, the test
252 * harness will, when loaded in a nested browsing context, attempt to call
253 * certain functions in each ancestor and opener browsing context:
254 *
255 * start - start_callback
256 * result - result_callback
257 * complete - completion_callback
258 *
259 * These are given the same arguments as the corresponding internal callbacks
260 * described above.
261 *
262 * == External API through cross-document messaging ==
263 *
264 * Where supported, the test harness will also send messages using
265 * cross-document messaging to each ancestor and opener browsing context. Since
266 * it uses the wildcard keyword (*), cross-origin communication is enabled and
267 * script on different origins can collect the results.
268 *
269 * This API follows similar conventions as those described above only slightly
270 * modified to accommodate message event API. Each message is sent by the harness
271 * is passed a single vanilla object, available as the `data` property of the
272 * event object. These objects are structures as follows:
273 *
274 * start - { type: "start" }
275 * result - { type: "result", test: Test }
276 * complete - { type: "complete", tests: [Test, ...], status: TestsStatus }
277 *
278 * == List of assertions ==
279 *
280 * assert_true(actual, description)
281 * asserts that /actual/ is strictly true
282 *
283 * assert_false(actual, description)
284 * asserts that /actual/ is strictly false
285 *
286 * assert_equals(actual, expected, description)
287 * asserts that /actual/ is the same value as /expected/
288 *
289 * assert_not_equals(actual, expected, description)
290 * asserts that /actual/ is a different value to /expected/. Yes, this means
291 * that "expected" is a misnomer
292 *
293 * assert_in_array(actual, expected, description)
294 * asserts that /expected/ is an Array, and /actual/ is equal to one of the
295 * members -- expected.indexOf(actual) != -1
296 *
297 * assert_array_equals(actual, expected, description)
298 * asserts that /actual/ and /expected/ have the same length and the value of
299 * each indexed property in /actual/ is the strictly equal to the corresponding
300 * property value in /expected/
301 *
302 * assert_approx_equals(actual, expected, epsilon, description)
303 * asserts that /actual/ is a number within +/- /epsilon/ of /expected/
304 *
305 * assert_less_than(actual, expected, description)
306 * asserts that /actual/ is a number less than /expected/
307 *
308 * assert_greater_than(actual, expected, description)
309 * asserts that /actual/ is a number greater than /expected/
310 *
311 * assert_less_than_equal(actual, expected, description)
312 * asserts that /actual/ is a number less than or equal to /expected/
313 *
314 * assert_greater_than_equal(actual, expected, description)
315 * asserts that /actual/ is a number greater than or equal to /expected/
316 *
317 * assert_regexp_match(actual, expected, description)
318 * asserts that /actual/ matches the regexp /expected/
319 *
320 * assert_class_string(object, class_name, description)
321 * asserts that the class string of /object/ as returned in
322 * Object.prototype.toString is equal to /class_name/.
323 *
324 * assert_own_property(object, property_name, description)
325 * assert that object has own property property_name
326 *
327 * assert_inherits(object, property_name, description)
328 * assert that object does not have an own property named property_name
329 * but that property_name is present in the prototype chain for object
330 *
331 * assert_idl_attribute(object, attribute_name, description)
332 * assert that an object that is an instance of some interface has the
333 * attribute attribute_name following the conditions specified by WebIDL
334 *
335 * assert_readonly(object, property_name, description)
336 * assert that property property_name on object is readonly
337 *
338 * assert_throws(code, func, description)
339 * code - the expected exception:
340 * o string: the thrown exception must be a DOMException with the given
341 * name, e.g., "TimeoutError" (for compatibility with existing
342 * tests, a constant is also supported, e.g., "TIMEOUT_ERR")
343 * o object: the thrown exception must have a property called "name" that
344 * matches code.name
345 * o null: allow any exception (in general, one of the options above
346 * should be used)
347 * func - a function that should throw
348 *
349 * assert_unreached(description)
350 * asserts if called. Used to ensure that some codepath is *not* taken e.g.
351 * an event does not fire.
352 *
353 * assert_any(assert_func, actual, expected_array, extra_arg_1, ... extra_arg_N)
354 * asserts that one assert_func(actual, expected_array_N, extra_arg1, ..., extra_arg_N)
355 * is true for some expected_array_N in expected_array. This only works for assert_func
356 * with signature assert_func(actual, expected, args_1, ..., args_N). Note that tests
357 * with multiple allowed pass conditions are bad practice unless the spec specifically
358 * allows multiple behaviours. Test authors should not use this method simply to hide
359 * UA bugs.
360 *
361 * assert_exists(object, property_name, description)
362 * *** deprecated ***
363 * asserts that object has an own property property_name
364 *
365 * assert_not_exists(object, property_name, description)
366 * *** deprecated ***
367 * assert that object does not have own property property_name
368 */
369
370 (function ()
371 {
372 var debug = false;
373 // default timeout is 10 seconds, test can override if needed
374 var settings = {
375 output:true,
376 harness_timeout:{"normal":10000,
377 "long":60000},
378 test_timeout:null
379 };
380
381 var xhtml_ns = "http://www.w3.org/1999/xhtml";
382
383 // script_prefix is used by Output.prototype.show_results() to figure out
384 // where to get testharness.css from. It's enclosed in an extra closure to
385 // not pollute the library's namespace with variables like "src".
386 var script_prefix = null;
387 (function ()
388 {
389 var scripts = document.getElementsByTagName("script");
390 for (var i = 0; i < scripts.length; i++)
391 {
392 if (scripts[i].src)
393 {
394 var src = scripts[i].src;
395 }
396 else if (scripts[i].href)
397 {
398 //SVG case
399 var src = scripts[i].href.baseVal;
400 }
401 if (src && src.slice(src.length - "testharness.js".length) === "testharness.js")
402 {
403 script_prefix = src.slice(0, src.length - "testharness.js".length);
404 break;
405 }
406 }
407 })();
408
409 /*
410 * API functions
411 */
412
413 var name_counter = 0;
414 function next_default_name()
415 {
416 //Don't use document.title to work around an Opera bug in XHTML documents
417 var title = document.getElementsByTagName("title")[0];
418 var prefix = (title && title.firstChild && title.firstChild.data) || "Untitled";
419 var suffix = name_counter > 0 ? " " + name_counter : "";
420 name_counter++;
421 return prefix + suffix;
422 }
423
424 function test(func, name, properties)
425 {
426 var test_name = name ? name : next_default_name();
427 properties = properties ? properties : {};
428 var test_obj = new Test(test_name, properties);
429 test_obj.step(func);
430 if (test_obj.phase === test_obj.phases.STARTED) {
431 test_obj.done();
432 }
433 }
434
435 function async_test(func, name, properties)
436 {
437 if (typeof func !== "function") {
438 properties = name;
439 name = func;
440 func = null;
441 }
442 var test_name = name ? name : next_default_name();
443 properties = properties ? properties : {};
444 var test_obj = new Test(test_name, properties);
445 if (func) {
446 test_obj.step(func, test_obj, test_obj);
447 }
448 return test_obj;
449 }
450
451 function setup(func_or_properties, maybe_properties)
452 {
453 var func = null;
454 var properties = {};
455 if (arguments.length === 2) {
456 func = func_or_properties;
457 properties = maybe_properties;
458 } else if (func_or_properties instanceof Function){
459 func = func_or_properties;
460 } else {
461 properties = func_or_properties;
462 }
463 tests.setup(func, properties);
464 output.setup(properties);
465 }
466
467 function done() {
468 tests.end_wait();
469 }
470
471 function generate_tests(func, args, properties) {
472 forEach(args, function(x, i)
473 {
474 var name = x[0];
475 test(function()
476 {
477 func.apply(this, x.slice(1));
478 },
479 name,
480 Array.isArray(properties) ? properties[i] : properties);
481 });
482 }
483
484 function on_event(object, event, callback)
485 {
486 object.addEventListener(event, callback, false);
487 }
488
489 expose(test, 'test');
490 expose(async_test, 'async_test');
491 expose(generate_tests, 'generate_tests');
492 expose(setup, 'setup');
493 expose(done, 'done');
494 expose(on_event, 'on_event');
495
496 /*
497 * Return a string truncated to the given length, with ... added at the end
498 * if it was longer.
499 */
500 function truncate(s, len)
501 {
502 if (s.length > len) {
503 return s.substring(0, len - 3) + "...";
504 }
505 return s;
506 }
507
508 /*
509 * Return true if object is probably a Node object.
510 */
511 function is_node(object)
512 {
513 // I use duck-typing instead of instanceof, because
514 // instanceof doesn't work if the node is from another window (like an
515 // iframe's contentWindow):
516 // http://www.w3.org/Bugs/Public/show_bug.cgi?id=12295
517 if ("nodeType" in object
518 && "nodeName" in object
519 && "nodeValue" in object
520 && "childNodes" in object)
521 {
522 try
523 {
524 object.nodeType;
525 }
526 catch (e)
527 {
528 // The object is probably Node.prototype or another prototype
529 // object that inherits from it, and not a Node instance.
530 return false;
531 }
532 return true;
533 }
534 return false;
535 }
536
537 /*
538 * Convert a value to a nice, human-readable string
539 */
540 function format_value(val, seen)
541 {
542 if (!seen) {
543 seen = [];
544 }
545 if (typeof val === "object" && val !== null)
546 {
547 if (seen.indexOf(val) >= 0)
548 {
549 return "[...]";
550 }
551 seen.push(val);
552 }
553 if (Array.isArray(val))
554 {
555 return "[" + val.map(function(x) {return format_value(x, seen)}).join(", ") + "]";
556 }
557
558 switch (typeof val)
559 {
560 case "string":
561 val = val.replace("\\", "\\\\");
562 for (var i = 0; i < 32; i++)
563 {
564 var replace = "\\";
565 switch (i) {
566 case 0: replace += "0"; break;
567 case 1: replace += "x01"; break;
568 case 2: replace += "x02"; break;
569 case 3: replace += "x03"; break;
570 case 4: replace += "x04"; break;
571 case 5: replace += "x05"; break;
572 case 6: replace += "x06"; break;
573 case 7: replace += "x07"; break;
574 case 8: replace += "b"; break;
575 case 9: replace += "t"; break;
576 case 10: replace += "n"; break;
577 case 11: replace += "v"; break;
578 case 12: replace += "f"; break;
579 case 13: replace += "r"; break;
580 case 14: replace += "x0e"; break;
581 case 15: replace += "x0f"; break;
582 case 16: replace += "x10"; break;
583 case 17: replace += "x11"; break;
584 case 18: replace += "x12"; break;
585 case 19: replace += "x13"; break;
586 case 20: replace += "x14"; break;
587 case 21: replace += "x15"; break;
588 case 22: replace += "x16"; break;
589 case 23: replace += "x17"; break;
590 case 24: replace += "x18"; break;
591 case 25: replace += "x19"; break;
592 case 26: replace += "x1a"; break;
593 case 27: replace += "x1b"; break;
594 case 28: replace += "x1c"; break;
595 case 29: replace += "x1d"; break;
596 case 30: replace += "x1e"; break;
597 case 31: replace += "x1f"; break;
598 }
599 val = val.replace(RegExp(String.fromCharCode(i), "g"), replace);
600 }
601 return '"' + val.replace(/"/g, '\\"') + '"';
602 case "boolean":
603 case "undefined":
604 return String(val);
605 case "number":
606 // In JavaScript, -0 === 0 and String(-0) == "0", so we have to
607 // special-case.
608 if (val === -0 && 1/val === -Infinity)
609 {
610 return "-0";
611 }
612 return String(val);
613 case "object":
614 if (val === null)
615 {
616 return "null";
617 }
618
619 // Special-case Node objects, since those come up a lot in my tests. I
620 // ignore namespaces.
621 if (is_node(val))
622 {
623 switch (val.nodeType)
624 {
625 case Node.ELEMENT_NODE:
626 var ret = "<" + val.tagName.toLowerCase();
627 for (var i = 0; i < val.attributes.length; i++)
628 {
629 ret += " " + val.attributes[i].name + '="' + val.attributes[i].value + '"';
630 }
631 ret += ">" + val.innerHTML + "</" + val.tagName.toLowerCase() + ">";
632 return "Element node " + truncate(ret, 60);
633 case Node.TEXT_NODE:
634 return 'Text node "' + truncate(val.data, 60) + '"';
635 case Node.PROCESSING_INSTRUCTION_NODE:
636 return "ProcessingInstruction node with target " + format_value(truncate(val.target, 60)) + " and data " + format_value(truncate(val.data, 60));
637 case Node.COMMENT_NODE:
638 return "Comment node <!--" + truncate(val.data, 60) + "-->";
639 case Node.DOCUMENT_NODE:
640 return "Document node with " + val.childNodes.length + (val.childNodes.length == 1 ? " child" : " children");
641 case Node.DOCUMENT_TYPE_NODE:
642 return "DocumentType node";
643 case Node.DOCUMENT_FRAGMENT_NODE:
644 return "DocumentFragment node with " + val.childNodes.length + (val.childNodes.length == 1 ? " child" : " children");
645 default:
646 return "Node object of unknown type";
647 }
648 }
649
650 // Fall through to default
651 default:
652 return typeof val + ' "' + truncate(String(val), 60) + '"';
653 }
654 }
655 expose(format_value, "format_value");
656
657 /*
658 * Assertions
659 */
660
661 function assert_true(actual, description)
662 {
663 assert(actual === true, "assert_true", description,
664 "expected true got ${actual}", {actual:actual});
665 };
666 expose(assert_true, "assert_true");
667
668 function assert_false(actual, description)
669 {
670 assert(actual === false, "assert_false", description,
671 "expected false got ${actual}", {actual:actual});
672 };
673 expose(assert_false, "assert_false");
674
675 function same_value(x, y) {
676 if (y !== y)
677 {
678 //NaN case
679 return x !== x;
680 }
681 else if (x === 0 && y === 0) {
682 //Distinguish +0 and -0
683 return 1/x === 1/y;
684 }
685 else
686 {
687 //typical case
688 return x === y;
689 }
690 }
691
692 function assert_equals(actual, expected, description)
693 {
694 /*
695 * Test if two primitives are equal or two objects
696 * are the same object
697 */
698 if (typeof actual != typeof expected)
699 {
700 assert(false, "assert_equals", description,
701 "expected (" + typeof expected + ") ${expected} but got (" + typeof actual + ") ${actual}",
702 {expected:expected, actual:actual});
703 return;
704 }
705 assert(same_value(actual, expected), "assert_equals", description,
706 "expected ${expected} but got ${actual}",
707 {expected:expected, actual:actual});
708 };
709 expose(assert_equals, "assert_equals");
710
711 function assert_not_equals(actual, expected, description)
712 {
713 /*
714 * Test if two primitives are unequal or two objects
715 * are different objects
716 */
717 assert(!same_value(actual, expected), "assert_not_equals", description,
718 "got disallowed value ${actual}",
719 {actual:actual});
720 };
721 expose(assert_not_equals, "assert_not_equals");
722
723 function assert_in_array(actual, expected, description)
724 {
725 assert(expected.indexOf(actual) != -1, "assert_in_array", description,
726 "value ${actual} not in array ${expected}",
727 {actual:actual, expected:expected});
728 }
729 expose(assert_in_array, "assert_in_array");
730
731 function assert_object_equals(actual, expected, description)
732 {
733 //This needs to be improved a great deal
734 function check_equal(actual, expected, stack)
735 {
736 stack.push(actual);
737
738 var p;
739 for (p in actual)
740 {
741 assert(expected.hasOwnProperty(p), "assert_object_equals", description,
742 "unexpected property ${p}", {p:p});
743
744 if (typeof actual[p] === "object" && actual[p] !== null)
745 {
746 if (stack.indexOf(actual[p]) === -1)
747 {
748 check_equal(actual[p], expected[p], stack);
749 }
750 }
751 else
752 {
753 assert(same_value(actual[p], expected[p]), "assert_object_equals", description,
754 "property ${p} expected ${expected} got ${actual}",
755 {p:p, expected:expected, actual:actual});
756 }
757 }
758 for (p in expected)
759 {
760 assert(actual.hasOwnProperty(p),
761 "assert_object_equals", description,
762 "expected property ${p} missing", {p:p});
763 }
764 stack.pop();
765 }
766 check_equal(actual, expected, []);
767 };
768 expose(assert_object_equals, "assert_object_equals");
769
770 function assert_array_equals(actual, expected, description)
771 {
772 assert(actual.length === expected.length,
773 "assert_array_equals", description,
774 "lengths differ, expected ${expected} got ${actual}",
775 {expected:expected.length, actual:actual.length});
776
777 for (var i=0; i < actual.length; i++)
778 {
779 assert(actual.hasOwnProperty(i) === expected.hasOwnProperty(i),
780 "assert_array_equals", description,
781 "property ${i}, property expected to be $expected but was $actual",
782 {i:i, expected:expected.hasOwnProperty(i) ? "present" : "missing",
783 actual:actual.hasOwnProperty(i) ? "present" : "missing"});
784 assert(same_value(expected[i], actual[i]),
785 "assert_array_equals", description,
786 "property ${i}, expected ${expected} but got ${actual}",
787 {i:i, expected:expected[i], actual:actual[i]});
788 }
789 }
790 expose(assert_array_equals, "assert_array_equals");
791
792 function assert_approx_equals(actual, expected, epsilon, description)
793 {
794 /*
795 * Test if two primitive numbers are equal withing +/- epsilon
796 */
797 assert(typeof actual === "number",
798 "assert_approx_equals", description,
799 "expected a number but got a ${type_actual}",
800 {type_actual:typeof actual});
801
802 assert(Math.abs(actual - expected) <= epsilon,
803 "assert_approx_equals", description,
804 "expected ${expected} +/- ${epsilon} but got ${actual}",
805 {expected:expected, actual:actual, epsilon:epsilon});
806 };
807 expose(assert_approx_equals, "assert_approx_equals");
808
809 function assert_less_than(actual, expected, description)
810 {
811 /*
812 * Test if a primitive number is less than another
813 */
814 assert(typeof actual === "number",
815 "assert_less_than", description,
816 "expected a number but got a ${type_actual}",
817 {type_actual:typeof actual});
818
819 assert(actual < expected,
820 "assert_less_than", description,
821 "expected a number less than ${expected} but got ${actual}",
822 {expected:expected, actual:actual});
823 };
824 expose(assert_less_than, "assert_less_than");
825
826 function assert_greater_than(actual, expected, description)
827 {
828 /*
829 * Test if a primitive number is greater than another
830 */
831 assert(typeof actual === "number",
832 "assert_greater_than", description,
833 "expected a number but got a ${type_actual}",
834 {type_actual:typeof actual});
835
836 assert(actual > expected,
837 "assert_greater_than", description,
838 "expected a number greater than ${expected} but got ${actual}",
839 {expected:expected, actual:actual});
840 };
841 expose(assert_greater_than, "assert_greater_than");
842
843 function assert_less_than_equal(actual, expected, description)
844 {
845 /*
846 * Test if a primitive number is less than or equal to another
847 */
848 assert(typeof actual === "number",
849 "assert_less_than_equal", description,
850 "expected a number but got a ${type_actual}",
851 {type_actual:typeof actual});
852
853 assert(actual <= expected,
854 "assert_less_than", description,
855 "expected a number less than or equal to ${expected} but got ${actual}",
856 {expected:expected, actual:actual});
857 };
858 expose(assert_less_than_equal, "assert_less_than_equal");
859
860 function assert_greater_than_equal(actual, expected, description)
861 {
862 /*
863 * Test if a primitive number is greater than or equal to another
864 */
865 assert(typeof actual === "number",
866 "assert_greater_than_equal", description,
867 "expected a number but got a ${type_actual}",
868 {type_actual:typeof actual});
869
870 assert(actual >= expected,
871 "assert_greater_than_equal", description,
872 "expected a number greater than or equal to ${expected} but got ${actual}",
873 {expected:expected, actual:actual});
874 };
875 expose(assert_greater_than_equal, "assert_greater_than_equal");
876
877 function assert_regexp_match(actual, expected, description) {
878 /*
879 * Test if a string (actual) matches a regexp (expected)
880 */
881 assert(expected.test(actual),
882 "assert_regexp_match", description,
883 "expected ${expected} but got ${actual}",
884 {expected:expected, actual:actual});
885 }
886 expose(assert_regexp_match, "assert_regexp_match");
887
888 function assert_class_string(object, class_string, description) {
889 assert_equals({}.toString.call(object), "[object " + class_string + "]",
890 description);
891 }
892 expose(assert_class_string, "assert_class_string");
893
894
895 function _assert_own_property(name) {
896 return function(object, property_name, description)
897 {
898 assert(object.hasOwnProperty(property_name),
899 name, description,
900 "expected property ${p} missing", {p:property_name});
901 };
902 }
903 expose(_assert_own_property("assert_exists"), "assert_exists");
904 expose(_assert_own_property("assert_own_property"), "assert_own_property");
905
906 function assert_not_exists(object, property_name, description)
907 {
908 assert(!object.hasOwnProperty(property_name),
909 "assert_not_exists", description,
910 "unexpected property ${p} found", {p:property_name});
911 };
912 expose(assert_not_exists, "assert_not_exists");
913
914 function _assert_inherits(name) {
915 return function (object, property_name, description)
916 {
917 assert(typeof object === "object",
918 name, description,
919 "provided value is not an object");
920
921 assert("hasOwnProperty" in object,
922 name, description,
923 "provided value is an object but has no hasOwnProperty method");
924
925 assert(!object.hasOwnProperty(property_name),
926 name, description,
927 "property ${p} found on object expected in prototype chain",
928 {p:property_name});
929
930 assert(property_name in object,
931 name, description,
932 "property ${p} not found in prototype chain",
933 {p:property_name});
934 };
935 }
936 expose(_assert_inherits("assert_inherits"), "assert_inherits");
937 expose(_assert_inherits("assert_idl_attribute"), "assert_idl_attribute");
938
939 function assert_readonly(object, property_name, description)
940 {
941 var initial_value = object[property_name];
942 try {
943 //Note that this can have side effects in the case where
944 //the property has PutForwards
945 object[property_name] = initial_value + "a"; //XXX use some other value here?
946 assert(same_value(object[property_name], initial_value),
947 "assert_readonly", description,
948 "changing property ${p} succeeded",
949 {p:property_name});
950 }
951 finally
952 {
953 object[property_name] = initial_value;
954 }
955 };
956 expose(assert_readonly, "assert_readonly");
957
958 function assert_throws(code, func, description)
959 {
960 try
961 {
962 func.call(this);
963 assert(false, "assert_throws", description,
964 "${func} did not throw", {func:func});
965 }
966 catch(e)
967 {
968 if (e instanceof AssertionError) {
969 throw(e);
970 }
971 if (code === null)
972 {
973 return;
974 }
975 if (typeof code === "object")
976 {
977 assert(typeof e == "object" && "name" in e && e.name == code.name,
978 "assert_throws", description,
979 "${func} threw ${actual} (${actual_name}) expected ${expected} (${expected_name})",
980 {func:func, actual:e, actual_name:e.name,
981 expected:code,
982 expected_name:code.name});
983 return;
984 }
985
986 var code_name_map = {
987 INDEX_SIZE_ERR: 'IndexSizeError',
988 HIERARCHY_REQUEST_ERR: 'HierarchyRequestError',
989 WRONG_DOCUMENT_ERR: 'WrongDocumentError',
990 INVALID_CHARACTER_ERR: 'InvalidCharacterError',
991 NO_MODIFICATION_ALLOWED_ERR: 'NoModificationAllowedError',
992 NOT_FOUND_ERR: 'NotFoundError',
993 NOT_SUPPORTED_ERR: 'NotSupportedError',
994 INVALID_STATE_ERR: 'InvalidStateError',
995 SYNTAX_ERR: 'SyntaxError',
996 INVALID_MODIFICATION_ERR: 'InvalidModificationError',
997 NAMESPACE_ERR: 'NamespaceError',
998 INVALID_ACCESS_ERR: 'InvalidAccessError',
999 TYPE_MISMATCH_ERR: 'TypeMismatchError',
1000 SECURITY_ERR: 'SecurityError',
1001 NETWORK_ERR: 'NetworkError',
1002 ABORT_ERR: 'AbortError',
1003 URL_MISMATCH_ERR: 'URLMismatchError',
1004 QUOTA_EXCEEDED_ERR: 'QuotaExceededError',
1005 TIMEOUT_ERR: 'TimeoutError',
1006 INVALID_NODE_TYPE_ERR: 'InvalidNodeTypeError',
1007 DATA_CLONE_ERR: 'DataCloneError'
1008 };
1009
1010 var name = code in code_name_map ? code_name_map[code] : code;
1011
1012 var name_code_map = {
1013 IndexSizeError: 1,
1014 HierarchyRequestError: 3,
1015 WrongDocumentError: 4,
1016 InvalidCharacterError: 5,
1017 NoModificationAllowedError: 7,
1018 NotFoundError: 8,
1019 NotSupportedError: 9,
1020 InvalidStateError: 11,
1021 SyntaxError: 12,
1022 InvalidModificationError: 13,
1023 NamespaceError: 14,
1024 InvalidAccessError: 15,
1025 TypeMismatchError: 17,
1026 SecurityError: 18,
1027 NetworkError: 19,
1028 AbortError: 20,
1029 URLMismatchError: 21,
1030 QuotaExceededError: 22,
1031 TimeoutError: 23,
1032 InvalidNodeTypeError: 24,
1033 DataCloneError: 25,
1034
1035 UnknownError: 0,
1036 ConstraintError: 0,
1037 DataError: 0,
1038 TransactionInactiveError: 0,
1039 ReadOnlyError: 0,
1040 VersionError: 0
1041 };
1042
1043 if (!(name in name_code_map))
1044 {
1045 throw new AssertionError('Test bug: unrecognized DOMException code "' + code + '" passed to assert_throws()');
1046 }
1047
1048 var required_props = { code: name_code_map[name] };
1049
1050 if (required_props.code === 0
1051 || ("name" in e && e.name !== e.name.toUpperCase() && e.name !== "DOMException"))
1052 {
1053 // New style exception: also test the name property.
1054 required_props.name = name;
1055 }
1056
1057 //We'd like to test that e instanceof the appropriate interface,
1058 //but we can't, because we don't know what window it was created
1059 //in. It might be an instanceof the appropriate interface on some
1060 //unknown other window. TODO: Work around this somehow?
1061
1062 assert(typeof e == "object",
1063 "assert_throws", description,
1064 "${func} threw ${e} with type ${type}, not an object",
1065 {func:func, e:e, type:typeof e});
1066
1067 for (var prop in required_props)
1068 {
1069 assert(typeof e == "object" && prop in e && e[prop] == required_props[prop],
1070 "assert_throws", description,
1071 "${func} threw ${e} that is not a DOMException " + code + ": property ${prop} is equal to ${actual}, expected ${expected}",
1072 {func:func, e:e, prop:prop, actual:e[prop], expected:required_props[prop]});
1073 }
1074 }
1075 }
1076 expose(assert_throws, "assert_throws");
1077
1078 function assert_unreached(description) {
1079 assert(false, "assert_unreached", description,
1080 "Reached unreachable code");
1081 }
1082 expose(assert_unreached, "assert_unreached");
1083
1084 function assert_any(assert_func, actual, expected_array)
1085 {
1086 var args = [].slice.call(arguments, 3)
1087 var errors = []
1088 var passed = false;
1089 forEach(expected_array,
1090 function(expected)
1091 {
1092 try {
1093 assert_func.apply(this, [actual, expected].concat(args))
1094 passed = true;
1095 } catch(e) {
1096 errors.push(e.message);
1097 }
1098 });
1099 if (!passed) {
1100 throw new AssertionError(errors.join("\n\n"));
1101 }
1102 }
1103 expose(assert_any, "assert_any");
1104
1105 function Test(name, properties)
1106 {
1107 this.name = name;
1108
1109 this.phases = {
1110 INITIAL:0,
1111 STARTED:1,
1112 HAS_RESULT:2,
1113 COMPLETE:3
1114 };
1115 this.phase = this.phases.INITIAL;
1116
1117 this.status = this.NOTRUN;
1118 this.timeout_id = null;
1119
1120 this.properties = properties;
1121 var timeout = properties.timeout ? properties.timeout : settings.test_timeout
1122 if (timeout != null) {
1123 this.timeout_length = timeout * tests.timeout_multiplier;
1124 } else {
1125 this.timeout_length = null;
1126 }
1127
1128 this.message = null;
1129
1130 var this_obj = this;
1131 this.steps = [];
1132
1133 tests.push(this);
1134 }
1135
1136 Test.statuses = {
1137 PASS:0,
1138 FAIL:1,
1139 TIMEOUT:2,
1140 NOTRUN:3
1141 };
1142
1143 Test.prototype = merge({}, Test.statuses);
1144
1145 Test.prototype.structured_clone = function()
1146 {
1147 if(!this._structured_clone)
1148 {
1149 var msg = this.message;
1150 msg = msg ? String(msg) : msg;
1151 this._structured_clone = merge({
1152 name:String(this.name),
1153 status:this.status,
1154 message:msg
1155 }, Test.statuses);
1156 }
1157 return this._structured_clone;
1158 };
1159
1160 Test.prototype.step = function(func, this_obj)
1161 {
1162 if (this.phase > this.phases.STARTED)
1163 {
1164 return;
1165 }
1166 this.phase = this.phases.STARTED;
1167 //If we don't get a result before the harness times out that will be a test timout
1168 this.set_status(this.TIMEOUT, "Test timed out");
1169
1170 tests.started = true;
1171
1172 if (this.timeout_id === null)
1173 {
1174 this.set_timeout();
1175 }
1176
1177 this.steps.push(func);
1178
1179 if (arguments.length === 1)
1180 {
1181 this_obj = this;
1182 }
1183
1184 try
1185 {
1186 return func.apply(this_obj, Array.prototype.slice.call(arguments, 2));
1187 }
1188 catch(e)
1189 {
1190 if (this.phase >= this.phases.HAS_RESULT)
1191 {
1192 return;
1193 }
1194 var message = (typeof e === "object" && e !== null) ? e.message : e;
1195 if (typeof e.stack != "undefined" && typeof e.message == "string") {
1196 //Try to make it more informative for some exceptions, at least
1197 //in Gecko and WebKit. This results in a stack dump instead of
1198 //just errors like "Cannot read property 'parentNode' of null"
1199 //or "root is null". Makes it a lot longer, of course.
1200 message += "(stack: " + e.stack + ")";
1201 }
1202 this.set_status(this.FAIL, message);
1203 this.phase = this.phases.HAS_RESULT;
1204 this.done();
1205 }
1206 };
1207
1208 Test.prototype.step_func = function(func, this_obj)
1209 {
1210 var test_this = this;
1211
1212 if (arguments.length === 1)
1213 {
1214 this_obj = test_this;
1215 }
1216
1217 return function()
1218 {
1219 test_this.step.apply(test_this, [func, this_obj].concat(
1220 Array.prototype.slice.call(arguments)));
1221 };
1222 };
1223
1224 Test.prototype.step_func_done = function(func, this_obj)
1225 {
1226 var test_this = this;
1227
1228 if (arguments.length === 1)
1229 {
1230 this_obj = test_this;
1231 }
1232
1233 return function()
1234 {
1235 test_this.step.apply(test_this, [func, this_obj].concat(
1236 Array.prototype.slice.call(arguments)));
1237 test_this.done();
1238 };
1239 }
1240
1241 Test.prototype.set_timeout = function()
1242 {
1243 if (this.timeout_length !== null)
1244 {
1245 var this_obj = this;
1246 this.timeout_id = setTimeout(function()
1247 {
1248 this_obj.timeout();
1249 }, this.timeout_length);
1250 }
1251 }
1252
1253 Test.prototype.set_status = function(status, message)
1254 {
1255 this.status = status;
1256 this.message = message;
1257 }
1258
1259 Test.prototype.timeout = function()
1260 {
1261 this.timeout_id = null;
1262 this.set_status(this.TIMEOUT, "Test timed out")
1263 this.phase = this.phases.HAS_RESULT;
1264 this.done();
1265 };
1266
1267 Test.prototype.done = function()
1268 {
1269 if (this.phase == this.phases.COMPLETE) {
1270 return;
1271 } else if (this.phase <= this.phases.STARTED)
1272 {
1273 this.set_status(this.PASS, null);
1274 }
1275
1276 if (this.status == this.NOTRUN)
1277 {
1278 alert(this.phase);
1279 }
1280
1281 this.phase = this.phases.COMPLETE;
1282
1283 clearTimeout(this.timeout_id);
1284 tests.result(this);
1285 };
1286
1287
1288 /*
1289 * Harness
1290 */
1291
1292 function TestsStatus()
1293 {
1294 this.status = null;
1295 this.message = null;
1296 }
1297
1298 TestsStatus.statuses = {
1299 OK:0,
1300 ERROR:1,
1301 TIMEOUT:2
1302 };
1303
1304 TestsStatus.prototype = merge({}, TestsStatus.statuses);
1305
1306 TestsStatus.prototype.structured_clone = function()
1307 {
1308 if(!this._structured_clone)
1309 {
1310 var msg = this.message;
1311 msg = msg ? String(msg) : msg;
1312 this._structured_clone = merge({
1313 status:this.status,
1314 message:msg
1315 }, TestsStatus.statuses);
1316 }
1317 return this._structured_clone;
1318 };
1319
1320 function Tests()
1321 {
1322 this.tests = [];
1323 this.num_pending = 0;
1324
1325 this.phases = {
1326 INITIAL:0,
1327 SETUP:1,
1328 HAVE_TESTS:2,
1329 HAVE_RESULTS:3,
1330 COMPLETE:4
1331 };
1332 this.phase = this.phases.INITIAL;
1333
1334 this.properties = {};
1335
1336 //All tests can't be done until the load event fires
1337 this.all_loaded = false;
1338 this.wait_for_finish = false;
1339 this.processing_callbacks = false;
1340
1341 this.allow_uncaught_exception = false;
1342
1343 this.timeout_multiplier = 1;
1344 this.timeout_length = this.get_timeout();
1345 this.timeout_id = null;
1346
1347 this.start_callbacks = [];
1348 this.test_done_callbacks = [];
1349 this.all_done_callbacks = [];
1350
1351 this.status = new TestsStatus();
1352
1353 var this_obj = this;
1354
1355 on_event(window, "load",
1356 function()
1357 {
1358 this_obj.all_loaded = true;
1359 if (this_obj.all_done())
1360 {
1361 this_obj.complete();
1362 }
1363 });
1364
1365 this.set_timeout();
1366 }
1367
1368 Tests.prototype.setup = function(func, properties)
1369 {
1370 if (this.phase >= this.phases.HAVE_RESULTS)
1371 {
1372 return;
1373 }
1374 if (this.phase < this.phases.SETUP)
1375 {
1376 this.phase = this.phases.SETUP;
1377 }
1378
1379 this.properties = properties;
1380
1381 for (var p in properties)
1382 {
1383 if (properties.hasOwnProperty(p))
1384 {
1385 var value = properties[p]
1386 if (p == "allow_uncaught_exception") {
1387 this.allow_uncaught_exception = value;
1388 }
1389 else if (p == "explicit_done" && value)
1390 {
1391 this.wait_for_finish = true;
1392 }
1393 else if (p == "explicit_timeout" && value) {
1394 this.timeout_length = null;
1395 if (this.timeout_id)
1396 {
1397 clearTimeout(this.timeout_id);
1398 }
1399 }
1400 else if (p == "timeout_multiplier")
1401 {
1402 this.timeout_multiplier = value;
1403 }
1404 }
1405 }
1406
1407 if (func)
1408 {
1409 try
1410 {
1411 func();
1412 } catch(e)
1413 {
1414 this.status.status = this.status.ERROR;
1415 this.status.message = e;
1416 };
1417 }
1418 this.set_timeout();
1419 };
1420
1421 Tests.prototype.get_timeout = function()
1422 {
1423 var metas = document.getElementsByTagName("meta");
1424 for (var i=0; i<metas.length; i++)
1425 {
1426 if (metas[i].name == "timeout")
1427 {
1428 if (metas[i].content == "long")
1429 {
1430 return settings.harness_timeout.long;
1431 }
1432 break;
1433 }
1434 }
1435 return settings.harness_timeout.normal;
1436 }
1437
1438 Tests.prototype.set_timeout = function()
1439 {
1440 var this_obj = this;
1441 clearTimeout(this.timeout_id);
1442 if (this.timeout_length !== null)
1443 {
1444 this.timeout_id = setTimeout(function() {
1445 this_obj.timeout();
1446 }, this.timeout_length);
1447 }
1448 };
1449
1450 Tests.prototype.timeout = function() {
1451 this.status.status = this.status.TIMEOUT;
1452 this.complete();
1453 };
1454
1455 Tests.prototype.end_wait = function()
1456 {
1457 this.wait_for_finish = false;
1458 if (this.all_done()) {
1459 this.complete();
1460 }
1461 };
1462
1463 Tests.prototype.push = function(test)
1464 {
1465 if (this.phase < this.phases.HAVE_TESTS) {
1466 this.start();
1467 }
1468 this.num_pending++;
1469 this.tests.push(test);
1470 };
1471
1472 Tests.prototype.all_done = function() {
1473 return (this.all_loaded && this.num_pending === 0 &&
1474 !this.wait_for_finish && !this.processing_callbacks);
1475 };
1476
1477 Tests.prototype.start = function() {
1478 this.phase = this.phases.HAVE_TESTS;
1479 this.notify_start();
1480 };
1481
1482 Tests.prototype.notify_start = function() {
1483 var this_obj = this;
1484 forEach (this.start_callbacks,
1485 function(callback)
1486 {
1487 callback(this_obj.properties);
1488 });
1489 forEach_windows(
1490 function(w, is_same_origin)
1491 {
1492 if(is_same_origin && w.start_callback)
1493 {
1494 try
1495 {
1496 w.start_callback(this_obj.properties);
1497 }
1498 catch(e)
1499 {
1500 if (debug)
1501 {
1502 throw(e);
1503 }
1504 }
1505 }
1506 if (supports_post_message(w) && w !== self)
1507 {
1508 w.postMessage({
1509 type: "start",
1510 properties: this_obj.properties
1511 }, "*");
1512 }
1513 });
1514 };
1515
1516 Tests.prototype.result = function(test)
1517 {
1518 if (this.phase > this.phases.HAVE_RESULTS)
1519 {
1520 return;
1521 }
1522 this.phase = this.phases.HAVE_RESULTS;
1523 this.num_pending--;
1524 this.notify_result(test);
1525 };
1526
1527 Tests.prototype.notify_result = function(test) {
1528 var this_obj = this;
1529 this.processing_callbacks = true;
1530 forEach(this.test_done_callbacks,
1531 function(callback)
1532 {
1533 callback(test, this_obj);
1534 });
1535
1536 forEach_windows(
1537 function(w, is_same_origin)
1538 {
1539 if(is_same_origin && w.result_callback)
1540 {
1541 try
1542 {
1543 w.result_callback(test);
1544 }
1545 catch(e)
1546 {
1547 if(debug) {
1548 throw e;
1549 }
1550 }
1551 }
1552 if (supports_post_message(w) && w !== self)
1553 {
1554 w.postMessage({
1555 type: "result",
1556 test: test.structured_clone()
1557 }, "*");
1558 }
1559 });
1560 this.processing_callbacks = false;
1561 if (this_obj.all_done())
1562 {
1563 this_obj.complete();
1564 }
1565 };
1566
1567 Tests.prototype.complete = function() {
1568 if (this.phase === this.phases.COMPLETE) {
1569 return;
1570 }
1571 this.phase = this.phases.COMPLETE;
1572 var this_obj = this;
1573 this.tests.forEach(
1574 function(x)
1575 {
1576 if(x.status === x.NOTRUN)
1577 {
1578 this_obj.notify_result(x);
1579 }
1580 }
1581 );
1582 this.notify_complete();
1583 };
1584
1585 Tests.prototype.notify_complete = function()
1586 {
1587 clearTimeout(this.timeout_id);
1588 var this_obj = this;
1589 var tests = map(this_obj.tests,
1590 function(test)
1591 {
1592 return test.structured_clone();
1593 });
1594 if (this.status.status === null)
1595 {
1596 this.status.status = this.status.OK;
1597 }
1598
1599 forEach (this.all_done_callbacks,
1600 function(callback)
1601 {
1602 callback(this_obj.tests, this_obj.status);
1603 });
1604
1605 forEach_windows(
1606 function(w, is_same_origin)
1607 {
1608 if(is_same_origin && w.completion_callback)
1609 {
1610 try
1611 {
1612 w.completion_callback(this_obj.tests, this_obj.status);
1613 }
1614 catch(e)
1615 {
1616 if (debug)
1617 {
1618 throw e;
1619 }
1620 }
1621 }
1622 if (supports_post_message(w) && w !== self)
1623 {
1624 w.postMessage({
1625 type: "complete",
1626 tests: tests,
1627 status: this_obj.status.structured_clone()
1628 }, "*");
1629 }
1630 });
1631 };
1632
1633 var tests = new Tests();
1634
1635 window.onerror = function(msg) {
1636 if (!tests.allow_uncaught_exception)
1637 {
1638 tests.status.status = tests.status.ERROR;
1639 tests.status.message = msg;
1640 tests.complete();
1641 }
1642 }
1643
1644 function timeout() {
1645 if (tests.timeout_length === null)
1646 {
1647 tests.timeout();
1648 }
1649 }
1650 expose(timeout, 'timeout');
1651
1652 function add_start_callback(callback) {
1653 tests.start_callbacks.push(callback);
1654 }
1655
1656 function add_result_callback(callback)
1657 {
1658 tests.test_done_callbacks.push(callback);
1659 }
1660
1661 function add_completion_callback(callback)
1662 {
1663 tests.all_done_callbacks.push(callback);
1664 }
1665
1666 expose(add_start_callback, 'add_start_callback');
1667 expose(add_result_callback, 'add_result_callback');
1668 expose(add_completion_callback, 'add_completion_callback');
1669
1670 /*
1671 * Output listener
1672 */
1673
1674 function Output() {
1675 this.output_document = document;
1676 this.output_node = null;
1677 this.done_count = 0;
1678 this.enabled = settings.output;
1679 this.phase = this.INITIAL;
1680 }
1681
1682 Output.prototype.INITIAL = 0;
1683 Output.prototype.STARTED = 1;
1684 Output.prototype.HAVE_RESULTS = 2;
1685 Output.prototype.COMPLETE = 3;
1686
1687 Output.prototype.setup = function(properties) {
1688 if (this.phase > this.INITIAL) {
1689 return;
1690 }
1691
1692 //If output is disabled in testharnessreport.js the test shouldn't be
1693 //able to override that
1694 this.enabled = this.enabled && (properties.hasOwnProperty("output") ?
1695 properties.output : settings.output);
1696 };
1697
1698 Output.prototype.init = function(properties)
1699 {
1700 if (this.phase >= this.STARTED) {
1701 return;
1702 }
1703 if (properties.output_document) {
1704 this.output_document = properties.output_document;
1705 } else {
1706 this.output_document = document;
1707 }
1708 this.phase = this.STARTED;
1709 };
1710
1711 Output.prototype.resolve_log = function()
1712 {
1713 var output_document;
1714 if (typeof this.output_document === "function")
1715 {
1716 output_document = this.output_document.apply(undefined);
1717 } else
1718 {
1719 output_document = this.output_document;
1720 }
1721 if (!output_document)
1722 {
1723 return;
1724 }
1725 var node = output_document.getElementById("log");
1726 if (node)
1727 {
1728 this.output_document = output_document;
1729 this.output_node = node;
1730 }
1731 };
1732
1733 Output.prototype.show_status = function(test)
1734 {
1735 if (this.phase < this.STARTED)
1736 {
1737 this.init();
1738 }
1739 if (!this.enabled)
1740 {
1741 return;
1742 }
1743 if (this.phase < this.HAVE_RESULTS)
1744 {
1745 this.resolve_log();
1746 this.phase = this.HAVE_RESULTS;
1747 }
1748 this.done_count++;
1749 if (this.output_node)
1750 {
1751 if (this.done_count < 100
1752 || (this.done_count < 1000 && this.done_count % 100 == 0)
1753 || this.done_count % 1000 == 0) {
1754 this.output_node.textContent = "Running, "
1755 + this.done_count + " complete, "
1756 + tests.num_pending + " remain";
1757 }
1758 }
1759 };
1760
1761 Output.prototype.show_results = function (tests, harness_status)
1762 {
1763 if (this.phase >= this.COMPLETE) {
1764 return;
1765 }
1766 if (!this.enabled)
1767 {
1768 return;
1769 }
1770 if (!this.output_node) {
1771 this.resolve_log();
1772 }
1773 this.phase = this.COMPLETE;
1774
1775 var log = this.output_node;
1776 if (!log)
1777 {
1778 return;
1779 }
1780 var output_document = this.output_document;
1781
1782 while (log.lastChild)
1783 {
1784 log.removeChild(log.lastChild);
1785 }
1786
1787 if (script_prefix != null) {
1788 var stylesheet = output_document.createElementNS(xhtml_ns, "link");
1789 stylesheet.setAttribute("rel", "stylesheet");
1790 stylesheet.setAttribute("href", script_prefix + "testharness.css");
1791 var heads = output_document.getElementsByTagName("head");
1792 if (heads.length) {
1793 heads[0].appendChild(stylesheet);
1794 }
1795 }
1796
1797 var status_text_harness = {};
1798 status_text_harness[harness_status.OK] = "OK";
1799 status_text_harness[harness_status.ERROR] = "Error";
1800 status_text_harness[harness_status.TIMEOUT] = "Timeout";
1801
1802 var status_text = {};
1803 status_text[Test.prototype.PASS] = "Pass";
1804 status_text[Test.prototype.FAIL] = "Fail";
1805 status_text[Test.prototype.TIMEOUT] = "Timeout";
1806 status_text[Test.prototype.NOTRUN] = "Not Run";
1807
1808 var status_number = {};
1809 forEach(tests, function(test) {
1810 var status = status_text[test.status];
1811 if (status_number.hasOwnProperty(status))
1812 {
1813 status_number[status] += 1;
1814 } else {
1815 status_number[status] = 1;
1816 }
1817 });
1818
1819 function status_class(status)
1820 {
1821 return status.replace(/\s/g, '').toLowerCase();
1822 }
1823
1824 var summary_template = ["section", {"id":"summary"},
1825 ["h2", {}, "Summary"],
1826 function(vars)
1827 {
1828 if (harness_status.status === harness_status.OK)
1829 {
1830 return null;
1831 }
1832 else
1833 {
1834 var status = status_text_harness[harness_status.status];
1835 var rv = [["p", {"class":status_class(status)}]];
1836
1837 if (harness_status.status === harness_status.ERROR)
1838 {
1839 rv[0].push("Harness encountered an error:");
1840 rv.push(["pre", {}, harness_status.message]);
1841 }
1842 else if (harness_status.status === harness_status.TIMEOUT)
1843 {
1844 rv[0].push("Harness timed out.");
1845 }
1846 else
1847 {
1848 rv[0].push("Harness got an unexpected status.");
1849 }
1850
1851 return rv;
1852 }
1853 },
1854 ["p", {}, "Found ${num_tests} tests"],
1855 function(vars) {
1856 var rv = [["div", {}]];
1857 var i=0;
1858 while (status_text.hasOwnProperty(i)) {
1859 if (status_number.hasOwnProperty(status_text[i])) {
1860 var status = status_text[i];
1861 rv[0].push(["div", {"class":status_class(status)},
1862 ["label", {},
1863 ["input", {type:"checkbox", checked:"checked"}],
1864 status_number[status] + " " + status]]);
1865 }
1866 i++;
1867 }
1868 return rv;
1869 }];
1870
1871 log.appendChild(render(summary_template, {num_tests:tests.length}, output_document));
1872
1873 forEach(output_document.querySelectorAll("section#summary label"),
1874 function(element)
1875 {
1876 on_event(element, "click",
1877 function(e)
1878 {
1879 if (output_document.getElementById("results") === null)
1880 {
1881 e.preventDefault();
1882 return;
1883 }
1884 var result_class = element.parentNode.getAttribute("class");
1885 var style_element = output_document.querySelector("style#hide-" + result_class);
1886 var input_element = element.querySelector("input");
1887 if (!style_element && !input_element.checked) {
1888 style_element = output_document.createElementNS(xhtml_ns, "style");
1889 style_element.id = "hide-" + result_class;
1890 style_element.textContent = "table#results > tbody > tr."+result_class+"{display:none}";
1891 output_document.body.appendChild(style_element);
1892 } else if (style_element && input_element.checked) {
1893 style_element.parentNode.removeChild(style_element);
1894 }
1895 });
1896 });
1897
1898 // This use of innerHTML plus manual escaping is not recommended in
1899 // general, but is necessary here for performance. Using textContent
1900 // on each individual <td> adds tens of seconds of execution time for
1901 // large test suites (tens of thousands of tests).
1902 function escape_html(s)
1903 {
1904 return s.replace(/\&/g, "&amp;")
1905 .replace(/</g, "&lt;")
1906 .replace(/"/g, "&quot;")
1907 .replace(/'/g, "&#39;");
1908 }
1909
1910 function has_assertions()
1911 {
1912 for (var i = 0; i < tests.length; i++) {
1913 if (tests[i].properties.hasOwnProperty("assert")) {
1914 return true;
1915 }
1916 }
1917 return false;
1918 }
1919
1920 function get_assertion(test)
1921 {
1922 if (test.properties.hasOwnProperty("assert")) {
1923 if (Array.isArray(test.properties.assert)) {
1924 return test.properties.assert.join(' ');
1925 }
1926 return test.properties.assert;
1927 }
1928 return '';
1929 }
1930
1931 log.appendChild(document.createElementNS(xhtml_ns, "section"));
1932 var assertions = has_assertions();
1933 var html = "<h2>Details</h2><table id='results' " + (assertions ? "class='assertions'" : "" ) + ">"
1934 + "<thead><tr><th>Result</th><th>Test Name</th>"
1935 + (assertions ? "<th>Assertion</th>" : "")
1936 + "<th>Message</th></tr></thead>"
1937 + "<tbody>";
1938 for (var i = 0; i < tests.length; i++) {
1939 html += '<tr class="'
1940 + escape_html(status_class(status_text[tests[i].status]))
1941 + '"><td>'
1942 + escape_html(status_text[tests[i].status])
1943 + "</td><td>"
1944 + escape_html(tests[i].name)
1945 + "</td><td>"
1946 + (assertions ? escape_html(get_assertion(tests[i])) + "</td><td>" : "")
1947 + escape_html(tests[i].message ? tests[i].message : " ")
1948 + "</td></tr>";
1949 }
1950 html += "</tbody></table>";
1951 try {
1952 log.lastChild.innerHTML = html;
1953 } catch (e) {
1954 log.appendChild(document.createElementNS(xhtml_ns, "p"))
1955 .textContent = "Setting innerHTML for the log threw an exception.";
1956 log.appendChild(document.createElementNS(xhtml_ns, "pre"))
1957 .textContent = html;
1958 }
1959 };
1960
1961 var output = new Output();
1962 add_start_callback(function (properties) {output.init(properties);});
1963 add_result_callback(function (test) {output.show_status(tests);});
1964 add_completion_callback(function (tests, harness_status) {output.show_results(tests, harness_status);});
1965
1966 /*
1967 * Template code
1968 *
1969 * A template is just a javascript structure. An element is represented as:
1970 *
1971 * [tag_name, {attr_name:attr_value}, child1, child2]
1972 *
1973 * the children can either be strings (which act like text nodes), other templates or
1974 * functions (see below)
1975 *
1976 * A text node is represented as
1977 *
1978 * ["{text}", value]
1979 *
1980 * String values have a simple substitution syntax; ${foo} represents a variable foo.
1981 *
1982 * It is possible to embed logic in templates by using a function in a place where a
1983 * node would usually go. The function must either return part of a template or null.
1984 *
1985 * In cases where a set of nodes are required as output rather than a single node
1986 * with children it is possible to just use a list
1987 * [node1, node2, node3]
1988 *
1989 * Usage:
1990 *
1991 * render(template, substitutions) - take a template and an object mapping
1992 * variable names to parameters and return either a DOM node or a list of DOM nodes
1993 *
1994 * substitute(template, substitutions) - take a template and variable mapping object,
1995 * make the variable substitutions and return the substituted template
1996 *
1997 */
1998
1999 function is_single_node(template)
2000 {
2001 return typeof template[0] === "string";
2002 }
2003
2004 function substitute(template, substitutions)
2005 {
2006 if (typeof template === "function") {
2007 var replacement = template(substitutions);
2008 if (replacement)
2009 {
2010 var rv = substitute(replacement, substitutions);
2011 return rv;
2012 }
2013 else
2014 {
2015 return null;
2016 }
2017 }
2018 else if (is_single_node(template))
2019 {
2020 return substitute_single(template, substitutions);
2021 }
2022 else
2023 {
2024 return filter(map(template, function(x) {
2025 return substitute(x, substitutions);
2026 }), function(x) {return x !== null;});
2027 }
2028 }
2029
2030 function substitute_single(template, substitutions)
2031 {
2032 var substitution_re = /\${([^ }]*)}/g;
2033
2034 function do_substitution(input) {
2035 var components = input.split(substitution_re);
2036 var rv = [];
2037 for (var i=0; i<components.length; i+=2)
2038 {
2039 rv.push(components[i]);
2040 if (components[i+1])
2041 {
2042 rv.push(String(substitutions[components[i+1]]));
2043 }
2044 }
2045 return rv;
2046 }
2047
2048 var rv = [];
2049 rv.push(do_substitution(String(template[0])).join(""));
2050
2051 if (template[0] === "{text}") {
2052 substitute_children(template.slice(1), rv);
2053 } else {
2054 substitute_attrs(template[1], rv);
2055 substitute_children(template.slice(2), rv);
2056 }
2057
2058 function substitute_attrs(attrs, rv)
2059 {
2060 rv[1] = {};
2061 for (var name in template[1])
2062 {
2063 if (attrs.hasOwnProperty(name))
2064 {
2065 var new_name = do_substitution(name).join("");
2066 var new_value = do_substitution(attrs[name]).join("");
2067 rv[1][new_name] = new_value;
2068 };
2069 }
2070 }
2071
2072 function substitute_children(children, rv)
2073 {
2074 for (var i=0; i<children.length; i++)
2075 {
2076 if (children[i] instanceof Object) {
2077 var replacement = substitute(children[i], substitutions);
2078 if (replacement !== null)
2079 {
2080 if (is_single_node(replacement))
2081 {
2082 rv.push(replacement);
2083 }
2084 else
2085 {
2086 extend(rv, replacement);
2087 }
2088 }
2089 }
2090 else
2091 {
2092 extend(rv, do_substitution(String(children[i])));
2093 }
2094 }
2095 return rv;
2096 }
2097
2098 return rv;
2099 }
2100
2101 function make_dom_single(template, doc)
2102 {
2103 var output_document = doc || document;
2104 if (template[0] === "{text}")
2105 {
2106 var element = output_document.createTextNode("");
2107 for (var i=1; i<template.length; i++)
2108 {
2109 element.data += template[i];
2110 }
2111 }
2112 else
2113 {
2114 var element = output_document.createElementNS(xhtml_ns, template[0]);
2115 for (var name in template[1]) {
2116 if (template[1].hasOwnProperty(name))
2117 {
2118 element.setAttribute(name, template[1][name]);
2119 }
2120 }
2121 for (var i=2; i<template.length; i++)
2122 {
2123 if (template[i] instanceof Object)
2124 {
2125 var sub_element = make_dom(template[i]);
2126 element.appendChild(sub_element);
2127 }
2128 else
2129 {
2130 var text_node = output_document.createTextNode(template[i]);
2131 element.appendChild(text_node);
2132 }
2133 }
2134 }
2135
2136 return element;
2137 }
2138
2139
2140
2141 function make_dom(template, substitutions, output_document)
2142 {
2143 if (is_single_node(template))
2144 {
2145 return make_dom_single(template, output_document);
2146 }
2147 else
2148 {
2149 return map(template, function(x) {
2150 return make_dom_single(x, output_document);
2151 });
2152 }
2153 }
2154
2155 function render(template, substitutions, output_document)
2156 {
2157 return make_dom(substitute(template, substitutions), output_document);
2158 }
2159
2160 /*
2161 * Utility funcions
2162 */
2163 function assert(expected_true, function_name, description, error, substitutions)
2164 {
2165 if (expected_true !== true)
2166 {
2167 throw new AssertionError(make_message(function_name, description,
2168 error, substitutions));
2169 }
2170 }
2171
2172 function AssertionError(message)
2173 {
2174 this.message = message;
2175 }
2176
2177 function make_message(function_name, description, error, substitutions)
2178 {
2179 for (var p in substitutions) {
2180 if (substitutions.hasOwnProperty(p)) {
2181 substitutions[p] = format_value(substitutions[p]);
2182 }
2183 }
2184 var node_form = substitute(["{text}", "${function_name}: ${description}" + error],
2185 merge({function_name:function_name,
2186 description:(description?description + " ":"")},
2187 substitutions));
2188 return node_form.slice(1).join("");
2189 }
2190
2191 function filter(array, callable, thisObj) {
2192 var rv = [];
2193 for (var i=0; i<array.length; i++)
2194 {
2195 if (array.hasOwnProperty(i))
2196 {
2197 var pass = callable.call(thisObj, array[i], i, array);
2198 if (pass) {
2199 rv.push(array[i]);
2200 }
2201 }
2202 }
2203 return rv;
2204 }
2205
2206 function map(array, callable, thisObj)
2207 {
2208 var rv = [];
2209 rv.length = array.length;
2210 for (var i=0; i<array.length; i++)
2211 {
2212 if (array.hasOwnProperty(i))
2213 {
2214 rv[i] = callable.call(thisObj, array[i], i, array);
2215 }
2216 }
2217 return rv;
2218 }
2219
2220 function extend(array, items)
2221 {
2222 Array.prototype.push.apply(array, items);
2223 }
2224
2225 function forEach (array, callback, thisObj)
2226 {
2227 for (var i=0; i<array.length; i++)
2228 {
2229 if (array.hasOwnProperty(i))
2230 {
2231 callback.call(thisObj, array[i], i, array);
2232 }
2233 }
2234 }
2235
2236 function merge(a,b)
2237 {
2238 var rv = {};
2239 var p;
2240 for (p in a)
2241 {
2242 rv[p] = a[p];
2243 }
2244 for (p in b) {
2245 rv[p] = b[p];
2246 }
2247 return rv;
2248 }
2249
2250 function expose(object, name)
2251 {
2252 var components = name.split(".");
2253 var target = window;
2254 for (var i=0; i<components.length - 1; i++)
2255 {
2256 if (!(components[i] in target))
2257 {
2258 target[components[i]] = {};
2259 }
2260 target = target[components[i]];
2261 }
2262 target[components[components.length - 1]] = object;
2263 }
2264
2265 function forEach_windows(callback) {
2266 // Iterate of the the windows [self ... top, opener]. The callback is passed
2267 // two objects, the first one is the windows object itself, the second one
2268 // is a boolean indicating whether or not its on the same origin as the
2269 // current window.
2270 var cache = forEach_windows.result_cache;
2271 if (!cache) {
2272 cache = [[self, true]];
2273 var w = self;
2274 var i = 0;
2275 var so;
2276 var origins = location.ancestorOrigins;
2277 while (w != w.parent)
2278 {
2279 w = w.parent;
2280 // In WebKit, calls to parent windows' properties that aren't on the same
2281 // origin cause an error message to be displayed in the error console but
2282 // don't throw an exception. This is a deviation from the current HTML5
2283 // spec. See: https://bugs.webkit.org/show_bug.cgi?id=43504
2284 // The problem with WebKit's behavior is that it pollutes the error console
2285 // with error messages that can't be caught.
2286 //
2287 // This issue can be mitigated by relying on the (for now) proprietary
2288 // `location.ancestorOrigins` property which returns an ordered list of
2289 // the origins of enclosing windows. See:
2290 // http://trac.webkit.org/changeset/113945.
2291 if(origins) {
2292 so = (location.origin == origins[i]);
2293 }
2294 else
2295 {
2296 so = is_same_origin(w);
2297 }
2298 cache.push([w, so]);
2299 i++;
2300 }
2301 w = window.opener;
2302 if(w)
2303 {
2304 // window.opener isn't included in the `location.ancestorOrigins` prop.
2305 // We'll just have to deal with a simple check and an error msg on WebKit
2306 // browsers in this case.
2307 cache.push([w, is_same_origin(w)]);
2308 }
2309 forEach_windows.result_cache = cache;
2310 }
2311
2312 forEach(cache,
2313 function(a)
2314 {
2315 callback.apply(null, a);
2316 });
2317 }
2318
2319 function is_same_origin(w) {
2320 try {
2321 'random_prop' in w;
2322 return true;
2323 } catch(e) {
2324 return false;
2325 }
2326 }
2327
2328 function supports_post_message(w)
2329 {
2330 var supports;
2331 var type;
2332 // Given IE implements postMessage across nested iframes but not across
2333 // windows or tabs, you can't infer cross-origin communication from the presence
2334 // of postMessage on the current window object only.
2335 //
2336 // Touching the postMessage prop on a window can throw if the window is
2337 // not from the same origin AND post message is not supported in that
2338 // browser. So just doing an existence test here won't do, you also need
2339 // to wrap it in a try..cacth block.
2340 try
2341 {
2342 type = typeof w.postMessage;
2343 if (type === "function")
2344 {
2345 supports = true;
2346 }
2347 // IE8 supports postMessage, but implements it as a host object which
2348 // returns "object" as its `typeof`.
2349 else if (type === "object")
2350 {
2351 supports = true;
2352 }
2353 // This is the case where postMessage isn't supported AND accessing a
2354 // window property across origins does NOT throw (e.g. old Safari browser).
2355 else
2356 {
2357 supports = false;
2358 }
2359 }
2360 catch(e) {
2361 // This is the case where postMessage isn't supported AND accessing a
2362 // window property across origins throws (e.g. old Firefox browser).
2363 supports = false;
2364 }
2365 return supports;
2366 }
2367 })();
2368 // vim: set expandtab shiftwidth=4 tabstop=4:

Mercurial Repository: The Tor Browser

Europalab SCM Repository Server

mercurial