Spinoff of bug 1506917 Filing a separate bug due to the following comment in prefs.rs // so please be careful and get review from a Testing :: geckodriver peer I noticed that when running tests that nsBrowserGlue.js was attempting to check for an update. This can be disabled by setting the app.update.checkInstallTime bool pref to false. The following change would cover it. diff --git a/testing/geckodriver/src/prefs.rs b/testing/geckodriver/src/prefs.rs --- a/testing/geckodriver/src/prefs.rs +++ b/testing/geckodriver/src/prefs.rs @@ -7,16 +7,19 @@ use mozprofile::preferences::Pref; // so please be careful and get review from a Testing :: geckodriver peer // before you make any changes to this file. lazy_static! { pub static ref DEFAULT: Vec<(&'static str, Pref)> = vec![ // Make sure Shield doesn't hit the network. ("app.normandy.api_url", Pref::new("")), + // Disable Firefox old build background check + ("app.update.checkInstallTime", Pref::new(false)), + // Disable automatically upgrading Firefox ("app.update.disabledForTesting", Pref::new(true)), // Enable the dump function, which sends messages to the system // console ("browser.dom.window.dump.enabled", Pref::new(true)), // Disable safebrowsing components

AFAICT this is a pure addition and the pref has been unchanged since 2013, so r+ in principle on this change.

Pushed by rstrong@mozilla.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/295cd66cea8f Don't attempt to check for updates from Firefox's nsBrowserGlue.js when running tests. r=jgraham