Bug 204484 – _log.info() not showing up on webkitpy tests

• Status: NEW
• Component: Tools / Tests

[Simon Fraser (smfr)]

test-webkitpy disables logging:

        _log.info("Suppressing most webkitpy logging while running unit tests.")
        handler.addFilter(testing_filter)

so it's impossible to debug tests.

--verbose needs to re-enable logging.

[Jonathan Bedard]

You're going to need to be a bit more specific about which tests you're dealing with.

I suspect you're struggling with some of our tests which capture stdout and stderr....which I think has proven to be a bad design choice over time, but it's not the sort of thing we can dedicate time to unraveling at the moment.

[Simon Fraser (smfr)]

I'm writing new tests and trying to use 'print' or _log.info() in them, but all that output is dropped.

Printer.configure() explicitly filters this output:

        # Filter out most webkitpy messages.
        #
        # Messages can be selectively re-enabled for this script by updating
        # this method accordingly.
        def filter_records(record):
            """Filter out autoinstall and non-third-party webkitpy messages."""
            # FIXME: Figure out a way not to use strings here, for example by
            #        using syntax like webkitpy.test.__name__.  We want to be
            #        sure not to import any non-Python 2.4 code, though, until
            #        after the version-checking code has executed.
            if (record.name.startswith("webkitpy.common.system.autoinstall") or
                record.name.startswith("webkitpy.test")):
                return True
            if record.name.startswith("webkitpy"):
                return False
            return True

        testing_filter = logging.Filter()
        testing_filter.filter = filter_records

        # Display a message so developers are not mystified as to why
        # logging does not work in the unit tests.
        _log.info("Suppressing most webkitpy logging while running unit tests.")
        handler.addFilter(testing_filter)


I want --verbose (or another flag) to remove this filtering.

[Simon Fraser (smfr)]

For example try adding some print statements in PorTest.test_diff_text()

[Jonathan Bedard]

It does weird things with newlines, but when I do:

....
def test_diff_text(self):
    print '\n\nfoo'
    port = self.make_port()
    # Make sure that we don't run into decoding exceptions when the
    # filenames are unicode, with regular or malformed input (expected or
    # actual input is always raw bytes, not unicode).
...

I see:

Skipping QueueStatusServer tests; the Google AppEngine Python SDK is not installed.
Suppressing most webkitpy logging while running unit tests.
Skipping tests in the following modules or packages because they are really, really, slow:
    webkitpy.common.checkout.scm.scm_unittest
    (https://bugs.webkit.org/show_bug.cgi?id=31818; use --all to include)

[619/1932] webkitpy.performance_tests.perftest_unittest.TestPerfTest.test_parse_output_with_detailed_info passed                   

foo
Ran 1932 tests in 7.581s                                                                                                                   

OK

I still think this bug stands though, because you're definitely right about info logging.