Goal:
-----
To have a method like CommentParser::parse(), which just takes a node
to parse and a title and returns plain data, so that we don't need to
keep track of the config to construct a CommentParser object (the
required config like content language is provided by services) and
we don't need to keep that object around after parsing.
Changes:
--------
CommentParser.php:
* …is now a service. Constructor only takes services as arguments.
The node and title are passed to a new parse() method.
* parse() should return plain data, but I split this part to a separate
patch for ease of review: I49bfe019aa460651447fd383f73eafa9d7180a92.
* CommentParser still cheats and accesses global state in a few places,
e.g. calling Title::makeTitleSafe or CommentUtils::getTitleFromUrl,
so we can't turn its tests into true unit tests. This work is left
for future commits.
LanguageData.php:
* …is now a service, instead of a static class.
Parser.js:
* …is not a real service, but it's changed to behave in a similar way.
Constructor takes only the required config as argument,
and node and title are instead passed to a new parse() method.
CommentParserTest.php:
parser.test.js:
* Can be simplified, now that we don't need a useless node and title
to test internal methods that don't use them.
testUtils.js:
* Can be simplified, now that we don't need to override internal
ResourceLoader stuff just to change the parser config.
Change-Id: Iadb7757debe000025e52770ca51ebcf24ca8ee66
These changes ensure that DiscussionTools is independent of DOM
library choice, and will not break if/when Parsoid switches to an
alternate (more standards-compliant) DOM library.
We run `phan` against the Dodo standards-compliant DOM library,
so this ends up flagging uses of non-standard PHP extensions to
the DOM. These will be suppressed for now with a "Nonstandard DOM"
comment that can be grepped for, since they will eventually
will need to be rewritten or worked around.
Most frequent issues:
* Node::nodeValue and Node::textContent and Element::getAttribute()
can return null in a spec-compliant implementation. Add `?? ''` to
make spec-compliant results consistent w/ what PHP returns.
* DOMXPath doesn't accept anything except DOMDocument. These uses
should be replaced with DOMCompat::querySelectorAll() or similar
(which end up using DOMXPath under the covers for DOMDocument any way,
but are implemented more efficiently in a spec-compliant
implementation).
* A couple of times we have code like:
`while ($node->firstChild!==null) { $node = $node->firstChild; }`
and phan's analysis isn't strong enough to determine that $node is still
non-null after the while. This same issue should appear with DOMDocument
but phan doesn't complain for some reason.
One apparently legit issue:
* Node::insertBefore() is once called in a funny way which leans on
the fact that the second option is optional in PHP. This seems to be
a workaround for an ancient PHP bug, and can probably be safely
removed.
Bug: T287611
Bug: T217867
Change-Id: I3c4f41c3819770f85d68157c9f690d650b7266a3
Documentation:
https://www.mediawiki.org/wiki/Manual:PHP_unit_testing/Writing_unit_tests_for_extensions#Two_types_of_tests
We can do this because the tested methods do not depend on any globals
or on MediaWiki being installed.
In addition to being the new hotness, MediaWikiUnitTestCase allows the
test classes that use it instead of MediaWikiTestCase to start up much
faster. In my testing, running this test case individually now takes
0.35s, compared to 1.1s before.
Try:
* With new code:
time php tests/phpunit/phpunit.php extensions/DiscussionTools/tests/phpunit/unit/CommentUtilsTest.php
* With old code:
time php tests/phpunit/phpunit.php extensions/DiscussionTools/tests/phpunit/CommentUtilsTest.php
Change-Id: I771b1f3d101a394ee869e42547d9ae7839397752
