2021884 - Start a GeckoEngineSession as soon as possible when starting Fenix with -marionette

Status: ASSIGNED

(GeckoView :: General, defect, P3)

Description

[Beatriz Rizental]

Marionette waits for the DOMContentLoaded event to be triggered to start anything, but on Fenix that only gets triggered once a GeckoEngineSession is created. I noticed it's created once I click the URL bar, by the FenixSearchMiddleware.

I will send a patch as a suggestion to address this. But I am not sure it's the best way to address the issue and it's just meant to start a discussion.

Comment 1

[Beatriz Rizental]

Attachment: Bug 2021884 - Start GeckoEngineSession early when Marionette enabled.r=whimboo

Comment 2

[Beatriz Rizental]

Note: This patch + 2021618 make it possible to run marionette tests on Android as long as you do the environment setup manually.

Step by step:

# Build geckoview
./mach build
# Build Fenix
./mach gradle [-PdisableOptimze] fenix:assembleDebug
# Start an emulator -- ./mach install will also do it for you
./mach android-emulator
# Forward the Marionette port
adb forward 2828
# Push the geckoview-config file, enabling Marionette
adb push adb push org.mozilla.fenix.debug-geckoview-config.yaml /data/local/tmp/ -- this is where `--marionette` is set
# Install the app
/mach install --app org.mozilla.fenix.debug
# Start the app
adb shell am start -n org.mozilla.fenix.debug/org.mozilla.gecko.BrowserApp
# Finally, run a test
./mach marionette-test --app fennec --address 127.0.0.1:2828 [a-test]

Comment 3

[BugBot [:suhaib / :marco]]

The severity field is not set for this bug.
:owlish, could you have a look please?

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