Hello devs,
I'd like to add a new test framework aimed on catching XML escaping bugs
that we currently have almost everywhere. Escaping bugs cause broken,
unusable pages when special characters are used in
space/page/category/user/whatever names and often present serious
security issues. This test framework will run automatic tests and also
allow for writing manual tests.
Currently, escaping tests are usually written using selenium2, see e.g.:
http://svn.xwiki.org/svnroot/xwiki/enterprise/trunk/distribution-test/ui-te…
This is a bad solution, slow and tricky to write.
Writing unit tests for such bugs is also not a good solution, because
most of the time they originate in velocity templates. It is hard to
test a single template in isolation, they usually require access to many
API functions.
The solution I propose works similar to webstandards tests. The
framework searches for all templates and documents in XWiki Enterprise
*.xar and *.war and generates automatic escaping tests for each of them.
Each test then requests URLs from XWiki server with different
parameters and runs a custom validator that searches for not escaped
data in the response. Manual tests can also be added easily.
The implementation can be found in the sandbox:
https://svn.xwiki.org/svnroot/xwiki/contrib/sandbox/xwiki-enterprise-test-e…
It currently implements some simple automated escaping tests on all
templates and applications from the XAR. The parameters to use are
chosen based on the source, using matching with regular expressions
(searches for things like $request.get("something")).
Full test run takes 8 minutes on my laptop. Current results: Tests run:
499, Failures: 166, Errors: 3, Skipped: 0 (there are still some false
positives that I need to track down though).
Files and test classes can be excluded from the tests using various
properties set in maven (see pom.xml). Usual -Dtest and -Dpattern are
also supported, e.g. to test all pages from "Blog" space, run:
mvn -Dtest=ApplicationTest -Dpattern='^Blog/' install
Some implementation details:
org.xwiki.escaping.suite
It is a custom JUnit4 test suite. It reads given zip file, then creates
and initializes instances of the test class for each found file. The
test class must implement FileTest (defines initialize()) and annotated
with @RunWith(ArchiveSuite.class). Test classes can decide based on
file name and content whether they can test the given file or not.
ApplicationTest and TemplateTest use this suite.
org.xwiki.escaping.framework
Contains base classes for the escaping tests (implement downloading data
from server, regex-based "parsing" etc.), escaping validator etc.
org.xwiki.escaping
Contains the tests (2 automatic and 1 manual).
Instances of the test classes (built by ArchiveSuite or manual ones) a
run using the default JUnit4 test runner, so all fancy test method
annotations are supported.
I propose to add this test framework to the main repository starting
with 2.5 branch. This will give us more time to fix current issues
(problematic files can be easily excluded to generate less noise).
WDYT?
Regards,
Alex
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