prefs.js

{
	// Disable automatic downloading of new releases
	"app.update.auto": false,

	// Disable automatically upgrading Firefox
	"app.update.enabled": false,

	// Increase the APZ content response timeout in tests to 1 minute.
	// This is to accommodate the fact that test environments tends to be slower
	// than production environments (with the b2g emulator being the slowest of them
	// all), resulting in the production timeout value sometimes being exceeded
	// and causing false-positive test failures. See bug 1176798, bug 1177018,
	// bug 1210465.
	//
	// https://github.com/mozilla/gecko-dev/blob/master/gfx/doc/AsyncPanZoom.md//content-preventing-default-behaviour-of-input-events
	"apz.content_response_timeout": 60000,

	// Enable the dump function, which sends messages to the system console
	"browser.dom.window.dump.enabled": true,

	// Indicate that the download panel has been shown once
	// so that whichever download test runs first does not
	// show the popup inconsistently
	"browser.download.panel.shown": true,

	// Implicitly accept license
	"browser.EULA.override": true,

	// Turn off once Marionette can correctly handle error pages, and doesn't
	// hang when about:blank gets loaded twice
	//
	// (bug 1145668, 1312674)
	"browser.newtabpage.enabled": true,

	// Assume the about:newtab page's intro panels have been shown to not depend on
	// which test runs first and happens to open about:newtab
	"browser.newtabpage.introShown": true,

	// Never start the browser in offline mode
	"browser.offline": false,

	// Background thumbnails in particular cause grief, and disabling thumbnails
	// in general cannot hurt
	"browser.pagethumbnails.capturing_disabled": true,

	// Avoid performing Reader Mode intros during tests
	"browser.reader.detectedFirstArticle": true,

	// Disable safebrowsing components
	"browser.safebrowsing.blockedURIs.enabled": false,
	"browser.safebrowsing.downloads.enabled": false,
	"browser.safebrowsing.enabled": false,
	"browser.safebrowsing.forbiddenURIs.enabled": false,
	"browser.safebrowsing.malware.enabled": false,
	"browser.safebrowsing.phishing.enabled": false,

	// Disable updates to search engines
	"browser.search.update": false,

	// Do not restore the last open set of tabs if the browser crashed
	"browser.sessionstore.resume_from_crash": false,

	// Skip check for default browser on startup
	"browser.shell.checkDefaultBrowser": false,

	// Do not warn when quitting with multiple tabs
	"browser.showQuitWarning": false,

	// Disable Android snippets
	"browser.snippets.enabled": false,
	"browser.snippets.syncPromo.enabled": false,
	"browser.snippets.firstrunHomepage.enabled": false,

	// Do not redirect user when a milestone upgrade of Firefox is detected
	"browser.startup.homepage_override.mstone": "ignore",

	// Start with a blank page (about:blank)
	"browser.startup.page": 0,

	// Disable tab animation
	"browser.tabs.animate": false,

	// Do not warn when quitting a window with multiple tabs
	"browser.tabs.closeWindowWithLastTab": false,

	// Do not allow background tabs to be zombified, otherwise for tests that
	// open additional tabs, the test harness tab itself might get unloaded
	"browser.tabs.disableBackgroundZombification": false,

	// Do not warn on exit when multiple tabs are open
	"browser.tabs.warnOnClose": false,

	// Do not warn when closing all other open tabs
	"browser.tabs.warnOnCloseOtherTabs": false,

	// Do not warn when multiple tabs will be opened
	"browser.tabs.warnOnOpen": false,

	// Disable first run splash page on Windows 10
	"browser.usedOnWindows10.introURL": "",

	// Disable the UI tour
	"browser.uitour.enabled": false,

	// Do not show datareporting policy notifications which can interfer with tests
	"datareporting.healthreport.about.reportUrl": "http://%(server)s/dummy/abouthealthreport/",
	"datareporting.healthreport.documentServerURI": "http://%(server)s/dummy/healthreport/",
	"datareporting.healthreport.logging.consoleEnabled": false,
	"datareporting.healthreport.service.enabled": false,
	"datareporting.healthreport.service.firstRun": false,
	"datareporting.healthreport.uploadEnabled": false,
	"datareporting.policy.dataSubmissionEnabled": false,
	"datareporting.policy.dataSubmissionPolicyAccepted": false,
	"datareporting.policy.dataSubmissionPolicyBypassNotification": true,

	// Disable popup-blocker
	"dom.disable_open_during_load": false,

	// Disable the ProcessHangMonitor
	"dom.ipc.reportProcessHangs": false,

	// Disable slow script dialogues
	"dom.max_chrome_script_run_time": 0,
	"dom.max_script_run_time": 0,

	// Only load extensions from the application and user profile
	// AddonManager.SCOPE_PROFILE + AddonManager.SCOPE_APPLICATION
	"extensions.autoDisableScopes": 0,
	"extensions.enabledScopes": 5,

	// don't block add-ons for e10s
	"extensions.e10sBlocksEnabling": false,
	
	// Disable metadata caching for installed add-ons by default
	"extensions.getAddons.cache.enabled": false,

	// Disable intalling any distribution add-ons
	"extensions.installDistroAddons": false,
	"extensions.showMismatchUI": false,

	// Turn off extension updates so they don't bother tests
	"extensions.update.enabled": false,
	"extensions.update.notifyUser": false,

	// Make sure opening about:addons will not hit the network
	"extensions.webservice.discoverURL": "http://%(server)s/dummy/discoveryURL",

	// Allow the application to have focus even it runs in the background
	"focusmanager.testmode": true,

	// Disable useragent updates
	"general.useragent.updates.enabled": false,

	// Always use network provider for geolocation tests
	// so we bypass the OSX dialog raised by the corelocation provider
	"geo.provider.testing": true,

	// Do not scan wi-fi
	"geo.wifi.scan": false,

	// No hang monitor
	"hangmonitor.timeout": 0,

	// Show chrome errors and warnings in the error console
	"javascript.options.showInConsole": true,

	// Make sure the disk cache doesn't get auto disabled
	"network.http.bypass-cachelock-threshold": 200000,

	// Do not prompt for temporary redirects
	"network.http.prompt-temp-redirect": false,

	// Disable speculative connections so they are not reported as leaking when they are
	// hanging around
	"network.http.speculative-parallel-limit": 0,

	// Do not automatically switch between offline and online
	"network.manage-offline-status": false,

	// Make sure SNTP requests do not hit the network
	"network.sntp.pools": "%(server)s",

	// Local documents have access to all other local docments,
	// including directory listings.
	"security.fileuri.strict_origin_policy": false,

	// Tests don't wait for the notification button security delay
	"security.notification_enable_delay": 0,

	// Ensure blocklist updates don't hit the network
	"services.settings.server": "http://%(server)s/dummy/blocklist/",

	// Do not automatically fill sign-in forms with known usernames and passwords
	"signon.autofillForms": false,

	// Disable password capture, so that tests that include forms are not
	// influenced by the presence of the persistent doorhanger notification
	"signon.rememberSignons": false,

	// Disable first run pages
	"startup.homepage_welcome_url": "about:blank",
	"startup.homepage_welcome_url.additional": "",

	// Prevent starting into safe mode after application crashes
	"toolkit.startup.max_resumed_crashes": -1,

	// We want to collect telemetry, but we don't want to send in the results
	"toolkit.telemetry.server": "https://%(server)s/dummy/telemetry/",
}