[tor-bugs] #13496 [Applications/Tor Browser]: Write test for spoofed navigator* values in workers

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#13496: Write test for spoofed navigator* values in workers
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 Reporter:  gk                        |          Owner:  tbb-team
     Type:  task                      |         Status:  assigned
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:  ff38-esr, tbb-testcase    |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by Thorin):

 @gk: tests you say... ok then (RFP passes every single test I can think
 of: excluding feature detection)

 - Firefox (use a non-68 release)
 - flip RFP on
 - while I'm still in the process of finishing building these into TZP, you
 can use kkapsner's test [1]
 - this tests open.window(), iframe, nested iframe, "sneaky" iframe, some
 other iframe, web worker, shared worker, service worker, nested workers,
 worker from blob ... etc
 - I've tested kkapsner's test with RFP off and UA spoofing extensions that
 fail to cover iframes etc
 - for those following along at home: ignore the red line that says headers
 is different to navigator (that's by design)

 [1] https://canvasblocker.kkapsner.de/test/navigatorTest.php

 As for what tests are upstream, it seems limited
  - https://dxr.mozilla.org/mozilla-
 central/source/browser/components/resistfingerprinting/test/browser/browser_navigator.js
  - ^^ includes a worker test

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13496#comment:6>
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