(In reply to Henrik Skupin [:whimboo][⌚️UTC+2] from comment #2) > I assume that `mach test` only accepts Marionette tests from `testing/marionette/harness/marionette_harness/tests/unit/`? Yes, I think that's right. It looks like this is the culprit: https://searchfox.org/mozilla-central/rev/887d4b5da89a11920ed0fd96b7b7f066927a67db/testing/marionette/mach_commands.py#91
Bug 1836727 Comment 3 Edit History
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(In reply to Henrik Skupin [:whimboo][⌚️UTC+2] from comment #2) > I assume that `mach test` only accepts Marionette tests from `testing/marionette/harness/marionette_harness/tests/unit/`? Actually, I think some other marionette test directories are okay. I think this directory just needs to be linked in via moz.build.