[tbb-bugs] #25331 [Applications/Tor Browser]: Test from #18912 failing

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#25331: Test from #18912 failing
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 Reporter:  arthuredelstein           |          Owner:  tbb-team
     Type:  defect                    |         Status:  needs_information
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:                            |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Changes (by mcs):

 * status:  new => needs_information


Comment:

 After poking around for a while with a 8.0a1-ish build of Tor Browser,
 Kathy and I learned that the test is failing due to #18087. When we run
 the test using the command below it works (i.e., the expected error code
 is generated):
 {{{
 ./mach mochitest --setpref=security.nocertdb=false
 toolkit/mozapps/update/tests/chrome/test_0790_check_certPinning_noUpdate.xul
 }}}

 Arthur, when you ran the test on mozilla-central was `security.nocertdb`
 set to `false`? I am not sure if the build you are using has the Tor
 Browser default prefs or not.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25331#comment:1>
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