Bug 1458571 - Add a script for diffing and sorting preferences, r=rwood
authorAndrew Halberstadt <ahalberstadt@mozilla.com>
Sat, 05 May 2018 07:30:38 -0400
changeset 794466 cd8746ad56d1795111de3803b2b6ea263d6217ee
parent 794465 59c1fb5c02c80346ffd5247453d2e653b328b802
child 794467 1e972b3b45d1c5d2e36cabddff6b5f7099cfda02
push id109697
push userbmo:sledru@mozilla.com
push dateSat, 12 May 2018 10:04:34 +0000
reviewersrwood
bugs1458571
milestone62.0a1
Bug 1458571 - Add a script for diffing and sorting preferences, r=rwood The main purpose of this script is to gain a view into the state of prefs between various profiles or suites. There are three commands: - show: Display prefs for the given profile or suite - diff: Display differences of prefs between two profiles or suites - sort: Sort pref files alphabetically for the given suite (this takes comments into account) This also sorts common/user.js. MozReview-Commit-ID: Bzl7w7i3glm
testing/profiles/common/user.js
testing/profiles/profile
--- a/testing/profiles/common/user.js
+++ b/testing/profiles/common/user.js
@@ -1,376 +1,315 @@
 // Base preferences file used by most test harnesses
 /* globals user_pref */
-user_pref("browser.console.showInPanel", true);
-user_pref("browser.dom.window.dump.enabled", true);
-user_pref("browser.firstrun.show.localepicker", false);
-user_pref("browser.firstrun.show.uidiscovery", false);
-user_pref("browser.startup.page", 0); // use about:blank, not browser.startup.homepage
-user_pref("browser.search.suggest.timeout", 10000); // use a 10s suggestion timeout in tests
-user_pref("browser.ui.layout.tablet", 0); // force tablet UI off
-user_pref("browser.urlbar.speculativeConnect.enabled", false);
-user_pref("dom.allow_scripts_to_close_windows", true);
-user_pref("dom.disable_open_during_load", false);
-user_pref("dom.experimental_forms", true); // on for testing
-user_pref("dom.forms.color", true); // on for testing
-user_pref("dom.forms.datetime", true); // on for testing
-user_pref("dom.forms.datetime.others", true); // on for testing
-user_pref("dom.max_script_run_time", 0); // no slow script dialogs
-user_pref("hangmonitor.timeout", 0); // no hang monitor
-user_pref("dom.max_chrome_script_run_time", 0);
-user_pref("dom.ipc.reportProcessHangs", false); // process hang monitor
-user_pref("dom.popup_maximum", -1);
-user_pref("dom.send_after_paint_to_content", true);
-user_pref("dom.successive_dialog_time_limit", 0);
-user_pref("browser.shell.checkDefaultBrowser", false);
-user_pref("shell.checkDefaultClient", false);
-user_pref("browser.warnOnQuit", false);
 user_pref("accessibility.typeaheadfind.autostart", false);
-user_pref("findbar.highlightAll", false);
-user_pref("findbar.modalHighlight", false);
-user_pref("javascript.options.showInConsole", true);
-user_pref("devtools.browsertoolbox.panel", "jsdebugger");
-user_pref("devtools.debugger.remote-port", 6023);
-user_pref("devtools.devedition.promo.enabled", false);
-user_pref("devtools.chrome.enabled", false);
-user_pref("devtools.debugger.remote-enabled", false);
-user_pref("devtools.debugger.prompt-connection", true);
-user_pref("devtools.testing", true);
-user_pref("browser.EULA.override", true);
-user_pref("gfx.color_management.force_srgb", true);
-user_pref("gfx.logging.level", 1);
-user_pref("network.manage-offline-status", false);
-// Disable speculative connections so they aren't reported as leaking when they're hanging around.
-user_pref("network.http.speculative-parallel-limit", 0);
-user_pref("dom.min_background_timeout_value", 1000);
-user_pref("test.mousescroll", true);
-user_pref("security.default_personal_cert", "Select Automatically"); // Need to client auth test be w/o any dialogs
-user_pref("network.http.prompt-temp-redirect", false);
-user_pref("media.preload.default", 2); // default = metadata
-user_pref("media.preload.auto", 3); // auto = enough
-user_pref("media.cache_size", 1000);
-user_pref("media.memory_cache_max_size", 32);
-user_pref("media.memory_caches_combined_limit_kb", 256);
-user_pref("media.volume_scale", "0.01");
-user_pref("media.test.dumpDebugInfo", true);
-user_pref("media.dormant-on-pause-timeout-ms", 0); // Enter dormant immediately without waiting for timeout.
-user_pref("media.suspend-bkgnd-video.enabled", false);
-user_pref("security.warn_viewing_mixed", false);
+// Make sure Shield doesn't hit the network.
+user_pref("app.normandy.api_url", "");
+// Make sure the notification permission migration test doesn't hit the network.
+user_pref("app.support.baseURL", "http://{server}/support-dummy/");
 user_pref("app.update.enabled", false);
 user_pref("app.update.staging.enabled", false);
 user_pref("app.update.url.android", "");
-// Make sure GMPInstallManager won't hit the network.
-user_pref("media.gmp-manager.url.override", "http://{server}/dummy-gmp-manager.xml");
-user_pref("media.gmp-manager.updateEnabled", false);
-user_pref("media.hls.server.url", "http://{server}/tests/dom/media/test/hls");
-user_pref("dom.w3c_touch_events.enabled", 1);
-user_pref("layout.accessiblecaret.enabled_on_touch", false);
-user_pref("dom.webcomponents.shadowdom.enabled", false);
-user_pref("dom.webcomponents.customelements.enabled", true);
-// Existing tests assume there is no font size inflation.
-user_pref("font.size.inflation.emPerLine", 0);
-user_pref("font.size.inflation.minTwips", 0);
-// Disable the caret blinking so we get stable snapshot
-user_pref("ui.caretBlinkTime", -1);
-
-// Don't allow background tabs to be zombified, otherwise for tests that
-// open additional tabs, the test harness tab itself might get unloaded.
-user_pref("browser.tabs.disableBackgroundZombification", true);
-
-// Only load extensions from the application and user profile
-// AddonManager.SCOPE_PROFILE + AddonManager.SCOPE_APPLICATION
-user_pref("extensions.enabledScopes", 5);
-user_pref("extensions.autoDisableScopes", 0);
-// Disable metadata caching for installed add-ons by default
-user_pref("extensions.getAddons.cache.enabled", false);
-// Disable intalling any distribution add-ons
-user_pref("extensions.installDistroAddons", false);
-user_pref("xpinstall.signatures.required", false);
-user_pref("extensions.legacy.enabled", true);
-
-user_pref("geo.wifi.uri", "http://{server}/tests/dom/tests/mochitest/geolocation/network_geolocation.sjs");
-user_pref("geo.wifi.timeToWaitBeforeSending", 2000);
-user_pref("geo.wifi.scan", false);
-user_pref("geo.wifi.logging.enabled", true);
-
-// Prevent connection to the push server for tests.
-user_pref("dom.push.connection.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.
+user_pref("apz.content_response_timeout", 60000);
+user_pref("browser.EULA.override", true);
+// Make sure we don't try to load snippets from the network.
+user_pref("browser.aboutHomeSnippets.updateUrl", "nonexistent://test");
+// Disable Bookmark backups by default.
+user_pref("browser.bookmarks.max_backups", 0);
+user_pref("browser.console.showInPanel", true);
+// Don't connect to Yahoo! for RSS feed tests.
+// en-US only uses .types.0.uri, but set all of them just to be sure.
+user_pref("browser.contentHandlers.types.0.uri", "http://test1.example.org/rss?url=%s");
+user_pref("browser.contentHandlers.types.1.uri", "http://test1.example.org/rss?url=%s");
+user_pref("browser.contentHandlers.types.2.uri", "http://test1.example.org/rss?url=%s");
+user_pref("browser.contentHandlers.types.3.uri", "http://test1.example.org/rss?url=%s");
+user_pref("browser.contentHandlers.types.4.uri", "http://test1.example.org/rss?url=%s");
+user_pref("browser.contentHandlers.types.5.uri", "http://test1.example.org/rss?url=%s");
+user_pref("browser.dom.window.dump.enabled", true);
+// Indicate that the download panel has been shown once so that whichever
+// download test runs first doesn't show the popup inconsistently.
+user_pref("browser.download.panel.shown", true);
+user_pref("browser.firstrun.show.localepicker", false);
+user_pref("browser.firstrun.show.uidiscovery", false);
+// Use an empty list of sites to avoid fetching
+user_pref("browser.newtabpage.activity-stream.default.sites", "");
+user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false);
+user_pref("browser.newtabpage.activity-stream.feeds.snippets", false);
+user_pref("browser.newtabpage.activity-stream.telemetry", false);
+user_pref("browser.newtabpage.activity-stream.tippyTop.service.endpoint", "");
+// Background thumbnails in particular cause grief, and disabling thumbnails
+// in general can't hurt - we re-enable them when tests need them.
+user_pref("browser.pagethumbnails.capturing_disabled", true);
+user_pref("browser.ping-centre.production.endpoint", "");
+// Make sure PingCentre doesn't hit the network.
+user_pref("browser.ping-centre.staging.endpoint", "");
 // Point the url-classifier to the local testing server for fast failures
 user_pref("browser.safebrowsing.downloads.remote.url", "http://{server}/safebrowsing-dummy/update");
 user_pref("browser.safebrowsing.provider.google.gethashURL", "http://{server}/safebrowsing-dummy/gethash");
 user_pref("browser.safebrowsing.provider.google.updateURL", "http://{server}/safebrowsing-dummy/update");
 user_pref("browser.safebrowsing.provider.google4.gethashURL", "http://{server}/safebrowsing4-dummy/gethash");
 user_pref("browser.safebrowsing.provider.google4.updateURL", "http://{server}/safebrowsing4-dummy/update");
 user_pref("browser.safebrowsing.provider.mozilla.gethashURL", "http://{server}/safebrowsing-dummy/gethash");
 user_pref("browser.safebrowsing.provider.mozilla.updateURL", "http://{server}/safebrowsing-dummy/update");
-user_pref("privacy.trackingprotection.introURL", "http://{server}/trackingprotection/tour");
-// Point update checks to the local testing server for fast failures
-user_pref("extensions.update.url", "http://{server}/extensions-dummy/updateURL");
-user_pref("extensions.update.background.url", "http://{server}/extensions-dummy/updateBackgroundURL");
-user_pref("extensions.blocklist.detailsURL", "http://{server}/extensions-dummy/blocklistDetailsURL");
-user_pref("extensions.blocklist.itemURL", "http://{server}/extensions-dummy/blocklistItemURL");
-user_pref("extensions.blocklist.url", "http://{server}/extensions-dummy/blocklistURL");
-user_pref("extensions.hotfix.url", "http://{server}/extensions-dummy/hotfixURL");
-user_pref("extensions.systemAddon.update.url", "http://{server}/dummy-system-addons.xml");
-// Turn off extension updates so they don't bother tests
-user_pref("extensions.update.enabled", false);
-// Make sure opening about:addons won't hit the network
-user_pref("extensions.webservice.discoverURL", "http://{server}/extensions-dummy/discoveryURL");
-// Make sure AddonRepository won't hit the network
-user_pref("extensions.getAddons.get.url", "http://{server}/extensions-dummy/repositoryGetURL");
-user_pref("extensions.getAddons.getWithPerformance.url", "http://{server}/extensions-dummy/repositoryGetWithPerformanceURL");
-user_pref("extensions.getAddons.search.browseURL", "http://{server}/extensions-dummy/repositoryBrowseURL");
-// Ensure blocklist updates don't hit the network
-user_pref("services.settings.server", "http://{server}/dummy-kinto/v1");
-// Make sure SNTP requests don't hit the network
-user_pref("network.sntp.pools", "{server}");
-// We know the SNTP request will fail, since localhost isn't listening on
-// port 135. The default number of retries (10) is excessive, but retrying
-// at least once will mean that codepath is still tested in automation.
-user_pref("network.sntp.maxRetryCount", 1);
-
-// Make sure the notification permission migration test doesn't hit the network.
-user_pref("app.support.baseURL", "http://{server}/support-dummy/");
-
-// Existing tests don't wait for the notification button security delay
-user_pref("security.notification_enable_delay", 0);
-
-// Make enablePrivilege continue to work for test code. :-(
-user_pref("security.turn_off_all_security_so_that_viruses_can_take_over_this_computer", true);
-
+user_pref("browser.search.countryCode", "US");
+// This will prevent HTTP requests for region defaults.
+user_pref("browser.search.geoSpecificDefaults", false);
+// Tell the search service we are running in the US.  This also has the desired
+// side-effect of preventing our geoip lookup.
+user_pref("browser.search.isUS", true);
+user_pref("browser.search.suggest.timeout", 10000); // use a 10s suggestion timeout in tests
+user_pref("browser.shell.checkDefaultBrowser", false);
+// Disable android snippets
+user_pref("browser.snippets.enabled", false);
+user_pref("browser.snippets.firstrunHomepage.enabled", false);
+user_pref("browser.snippets.syncPromo.enabled", false);
+user_pref("browser.startup.page", 0); // use about:blank, not browser.startup.homepage
+// Don't show a delay when hiding the audio indicator during tests
+user_pref("browser.tabs.delayHidingAudioPlayingIconMS", 0);
+// Don't allow background tabs to be zombified, otherwise for tests that
+// open additional tabs, the test harness tab itself might get unloaded.
+user_pref("browser.tabs.disableBackgroundZombification", true);
+// Don't use auto-enabled e10s
+user_pref("browser.tabs.remote.autostart", false);
+// Make sure Translation won't hit the network.
+user_pref("browser.translation.bing.authURL", "http://{server}/browser/browser/components/translation/test/bing.sjs");
+user_pref("browser.translation.bing.translateArrayURL", "http://{server}/browser/browser/components/translation/test/bing.sjs");
+user_pref("browser.translation.engine", "bing");
+user_pref("browser.translation.yandex.translateURLOverride", "http://{server}/browser/browser/components/translation/test/yandex.sjs");
+user_pref("browser.ui.layout.tablet", 0); // force tablet UI off
+// Ensure UITour won't hit the network
+user_pref("browser.uitour.pinnedTabUrl", "http://{server}/uitour-dummy/pinnedTab");
+user_pref("browser.uitour.url", "http://{server}/uitour-dummy/tour");
+user_pref("browser.urlbar.speculativeConnect.enabled", false);
+// Turn off search suggestions in the location bar so as not to trigger network
+// connections.
+user_pref("browser.urlbar.suggest.searches", false);
+user_pref("browser.urlbar.usepreloadedtopurls.enabled", false);
+// Turn off the location bar search suggestions opt-in.  It interferes with
+// tests that don't expect it to be there.
+user_pref("browser.urlbar.userMadeSearchSuggestionsChoice", true);
+user_pref("browser.warnOnQuit", false);
+// Disable webapp updates.  Yes, it is supposed to be an integer.
+user_pref("browser.webapps.checkForUpdates", 0);
+// Enable webapps testing mode, which bypasses native installation.
+user_pref("browser.webapps.testing", true);
+user_pref("captivedetect.canonicalURL", "http://{server}/captive-detect/success.txt");
+// Point Firefox Health Report at a local server. We don't care if it actually
+// works. It just can't hit the default production endpoint.
+user_pref("datareporting.healthreport.documentServerURI", "http://{server}/healthreport/");
+user_pref("datareporting.healthreport.uploadEnabled", false);
+// We do not wish to display datareporting policy notifications as it might
+// cause other tests to fail. Tests that wish to test the notification functionality
+// should explicitly disable this pref.
+user_pref("datareporting.policy.dataSubmissionPolicyBypassNotification", true);
+user_pref("devtools.browsertoolbox.panel", "jsdebugger");
+user_pref("devtools.chrome.enabled", false);
+user_pref("devtools.debugger.prompt-connection", true);
+user_pref("devtools.debugger.remote-enabled", false);
+user_pref("devtools.debugger.remote-port", 6023);
+user_pref("devtools.devedition.promo.enabled", false);
+user_pref("devtools.testing", true);
+user_pref("dom.allow_scripts_to_close_windows", true);
+user_pref("dom.disable_open_during_load", false);
+user_pref("dom.experimental_forms", true); // on for testing
+user_pref("dom.forms.color", true); // on for testing
+user_pref("dom.forms.datetime", true); // on for testing
+user_pref("dom.forms.datetime.others", true); // on for testing
+// Enable Gamepad
+user_pref("dom.gamepad.enabled", true);
+user_pref("dom.gamepad.non_standard_events.enabled", true);
+user_pref("dom.ipc.reportProcessHangs", false); // process hang monitor
+// Don't forceably kill content processes after a timeout
+user_pref("dom.ipc.tabs.shutdownTimeoutSecs", 0);
+user_pref("dom.max_chrome_script_run_time", 0);
+user_pref("dom.max_script_run_time", 0); // no slow script dialogs
+user_pref("dom.min_background_timeout_value", 1000);
+user_pref("dom.popup_maximum", -1);
+user_pref("dom.presentation.testing.simulate-receiver", false);
+// Prevent connection to the push server for tests.
+user_pref("dom.push.connection.enabled", false);
+user_pref("dom.send_after_paint_to_content", true);
+user_pref("dom.successive_dialog_time_limit", 0);
 // In the default configuration, we bypass XBL scopes (a security feature) for
 // domains whitelisted for remote XUL, so that intranet apps and such continue
 // to work without major rewrites. However, we also use the whitelist mechanism
 // to run our XBL tests in automation, in which case we really want to be testing
 // the configuration that we ship to users without special whitelisting. So we
 // use an additional pref here to allow automation to use the "normal" behavior.
 user_pref("dom.use_xbl_scopes_for_remote_xul", true);
-
-user_pref("captivedetect.canonicalURL", "http://{server}/captive-detect/success.txt");
-
-// We do not wish to display datareporting policy notifications as it might
-// cause other tests to fail. Tests that wish to test the notification functionality
-// should explicitly disable this pref.
-user_pref("datareporting.policy.dataSubmissionPolicyBypassNotification", true);
-
-// Point Firefox Health Report at a local server. We don't care if it actually
-// works. It just can't hit the default production endpoint.
-user_pref("datareporting.healthreport.documentServerURI", "http://{server}/healthreport/");
-
-// Make sure CSS error reporting is enabled for tests
-user_pref("layout.css.report_errors", true);
-
+user_pref("dom.w3c_touch_events.enabled", 1);
+user_pref("dom.webcomponents.customelements.enabled", true);
+user_pref("dom.webcomponents.shadowdom.enabled", false);
+user_pref("extensions.autoDisableScopes", 0);
+user_pref("extensions.blocklist.detailsURL", "http://{server}/extensions-dummy/blocklistDetailsURL");
+user_pref("extensions.blocklist.itemURL", "http://{server}/extensions-dummy/blocklistItemURL");
+user_pref("extensions.blocklist.url", "http://{server}/extensions-dummy/blocklistURL");
+// XPI extensions are required for test harnesses to load
+user_pref("extensions.defaultProviders.enabled", true);
+// Only load extensions from the application and user profile
+// AddonManager.SCOPE_PROFILE + AddonManager.SCOPE_APPLICATION
+user_pref("extensions.enabledScopes", 5);
+// Enable form autofill feature testing.
+user_pref("extensions.formautofill.available", "on");
+// Disable metadata caching for installed add-ons by default
+user_pref("extensions.getAddons.cache.enabled", false);
+// Make sure AddonRepository won't hit the network
+user_pref("extensions.getAddons.get.url", "http://{server}/extensions-dummy/repositoryGetURL");
+user_pref("extensions.getAddons.getWithPerformance.url", "http://{server}/extensions-dummy/repositoryGetWithPerformanceURL");
+user_pref("extensions.getAddons.search.browseURL", "http://{server}/extensions-dummy/repositoryBrowseURL");
+user_pref("extensions.hotfix.url", "http://{server}/extensions-dummy/hotfixURL");
+// Disable intalling any distribution add-ons
+user_pref("extensions.installDistroAddons", false);
+user_pref("extensions.legacy.enabled", true);
+// Disable Screenshots by default for now
+user_pref("extensions.screenshots.disabled", true);
+user_pref("extensions.systemAddon.update.url", "http://{server}/dummy-system-addons.xml");
+user_pref("extensions.update.background.url", "http://{server}/extensions-dummy/updateBackgroundURL");
+// Turn off extension updates so they don't bother tests
+user_pref("extensions.update.enabled", false);
+// Point update checks to the local testing server for fast failures
+user_pref("extensions.update.url", "http://{server}/extensions-dummy/updateURL");
+// Make sure opening about:addons won't hit the network
+user_pref("extensions.webservice.discoverURL", "http://{server}/extensions-dummy/discoveryURL");
+user_pref("findbar.highlightAll", false);
+user_pref("findbar.modalHighlight", false);
+// Existing tests assume there is no font size inflation.
+user_pref("font.size.inflation.emPerLine", 0);
+user_pref("font.size.inflation.minTwips", 0);
+// Disable useragent updates.
+user_pref("general.useragent.updates.enabled", false);
+user_pref("general.useragent.updates.url", "https://example.com/0/%APP_ID%");
+// Always use network provider for geolocation tests
+// so we bypass the OSX dialog raised by the corelocation provider
+user_pref("geo.provider.testing", true);
+user_pref("geo.wifi.logging.enabled", true);
+user_pref("geo.wifi.scan", false);
+user_pref("geo.wifi.timeToWaitBeforeSending", 2000);
+user_pref("geo.wifi.uri", "http://{server}/tests/dom/tests/mochitest/geolocation/network_geolocation.sjs");
+user_pref("gfx.color_management.force_srgb", true);
+user_pref("gfx.logging.level", 1);
+user_pref("hangmonitor.timeout", 0); // no hang monitor
+// We don't want to hit the real Firefox Accounts server for tests.  We don't
+// actually need a functioning FxA server, so just set it to something that
+// resolves and accepts requests, even if they all fail.
+user_pref("identity.fxaccounts.auth.uri", "https://{server}/fxa-dummy/");
+// Ditto for all the FxA content root URI.
+user_pref("identity.fxaccounts.remote.root", "https://{server}/");
+user_pref("javascript.options.showInConsole", true);
+user_pref("layout.accessiblecaret.enabled_on_touch", false);
+// Enable CSS 'contain' for testing
+user_pref("layout.css.contain.enabled", true);
 // Enable CSS Grid 'subgrid' feature for testing
 user_pref("layout.css.grid-template-subgrid-value.enabled", true);
-
-// Enable CSS 'contain' for testing
-user_pref("layout.css.contain.enabled", true);
-
 // Enable CSS initial-letter for testing
 user_pref("layout.css.initial-letter.enabled", true);
-
+// Enable -webkit-{min|max}-device-pixel-ratio media queries for testing
+user_pref("layout.css.prefixes.device-pixel-ratio-webkit", true);
 // Enable webkit prefixed CSS features for testing
 user_pref("layout.css.prefixes.webkit", true);
-
-// Enable -webkit-{min|max}-device-pixel-ratio media queries for testing
-user_pref("layout.css.prefixes.device-pixel-ratio-webkit", true);
-
+// Make sure CSS error reporting is enabled for tests
+user_pref("layout.css.report_errors", true);
 // Enable CSS shape-outside for testing
 user_pref("layout.css.shape-outside.enabled", true);
-
 // Disable spammy layout warnings because they pollute test logs
 user_pref("layout.spammy_warnings.enabled", false);
-
+// Make tests run consistently on DevEdition (which has a lightweight theme
+// selected by default).
+user_pref("lightweightThemes.selectedThemeID", "");
+// Disable all recommended Marionette preferences for Gecko tests.
+// The prefs recommended by Marionette are typically geared towards
+// consumer automation; not vendor testing.
+user_pref("marionette.prefs.recommended", false);
+user_pref("media.autoplay.enabled", true);
+user_pref("media.cache_size", 1000);
+user_pref("media.dormant-on-pause-timeout-ms", 0); // Enter dormant immediately without waiting for timeout.
+// Set the number of shmems the PChromiumCDM protocol pre-allocates to 0,
+// so that we test the case where we under-estimate how many shmems we need
+// to send decoded video frames from the CDM to Gecko.
+user_pref("media.eme.chromium-api.video-shmems", 0);
+user_pref("media.eme.enabled", true);
+user_pref("media.gmp-manager.updateEnabled", false);
+// Make sure GMPInstallManager won't hit the network.
+user_pref("media.gmp-manager.url.override", "http://{server}/dummy-gmp-manager.xml");
+user_pref("media.hls.server.url", "http://{server}/tests/dom/media/test/hls");
+// Don't block old libavcodec libraries when testing, because our test systems
+// cannot easily be upgraded.
+user_pref("media.libavcodec.allow-obsolete", true);
 // Enable Media Source Extensions for testing
 user_pref("media.mediasource.mp4.enabled", true);
 user_pref("media.mediasource.webm.enabled", true);
-
-// Enable Gamepad
-user_pref("dom.gamepad.enabled", true);
-user_pref("dom.gamepad.non_standard_events.enabled", true);
-
-// Always use network provider for geolocation tests
-// so we bypass the OSX dialog raised by the corelocation provider
-user_pref("geo.provider.testing", true);
-
-// Background thumbnails in particular cause grief, and disabling thumbnails
-// in general can't hurt - we re-enable them when tests need them.
-user_pref("browser.pagethumbnails.capturing_disabled", true);
-
-// Indicate that the download panel has been shown once so that whichever
-// download test runs first doesn't show the popup inconsistently.
-user_pref("browser.download.panel.shown", true);
-
-// Enable webapps testing mode, which bypasses native installation.
-user_pref("browser.webapps.testing", true);
-
-// Disable android snippets
-user_pref("browser.snippets.enabled", false);
-user_pref("browser.snippets.syncPromo.enabled", false);
-user_pref("browser.snippets.firstrunHomepage.enabled", false);
-
-// Disable useragent updates.
-user_pref("general.useragent.updates.enabled", false);
-user_pref("general.useragent.updates.url", "https://example.com/0/%APP_ID%");
-
-// Disable webapp updates.  Yes, it is supposed to be an integer.
-user_pref("browser.webapps.checkForUpdates", 0);
-
-user_pref("dom.presentation.testing.simulate-receiver", false);
-
-// Don't connect to Yahoo! for RSS feed tests.
-// en-US only uses .types.0.uri, but set all of them just to be sure.
-user_pref("browser.contentHandlers.types.0.uri", "http://test1.example.org/rss?url=%s");
-user_pref("browser.contentHandlers.types.1.uri", "http://test1.example.org/rss?url=%s");
-user_pref("browser.contentHandlers.types.2.uri", "http://test1.example.org/rss?url=%s");
-user_pref("browser.contentHandlers.types.3.uri", "http://test1.example.org/rss?url=%s");
-user_pref("browser.contentHandlers.types.4.uri", "http://test1.example.org/rss?url=%s");
-user_pref("browser.contentHandlers.types.5.uri", "http://test1.example.org/rss?url=%s");
-
-// We want to collect telemetry, but we don't want to send in the results.
-user_pref("toolkit.telemetry.server", "https://{server}/telemetry-dummy/");
-user_pref("datareporting.healthreport.uploadEnabled", false);
+user_pref("media.memory_cache_max_size", 32);
+user_pref("media.memory_caches_combined_limit_kb", 256);
+user_pref("media.openUnsupportedTypeWithExternalApp", false);
+user_pref("media.preload.auto", 3); // auto = enough
+user_pref("media.preload.default", 2); // default = metadata
+user_pref("media.suspend-bkgnd-video.enabled", false);
+user_pref("media.test.dumpDebugInfo", true);
+user_pref("media.volume_scale", "0.01");
+// Enable speech synth test service, and disable built in platform services.
+user_pref("media.webspeech.synth.test", true);
+user_pref("network.http.prompt-temp-redirect", false);
+// Disable speculative connections so they aren't reported as leaking when they're hanging around.
+user_pref("network.http.speculative-parallel-limit", 0);
+user_pref("network.manage-offline-status", false);
+// We know the SNTP request will fail, since localhost isn't listening on
+// port 135. The default number of retries (10) is excessive, but retrying
+// at least once will mean that codepath is still tested in automation.
+user_pref("network.sntp.maxRetryCount", 1);
+// Make sure SNTP requests don't hit the network
+user_pref("network.sntp.pools", "{server}");
+// Set places maintenance far in the future (the maximum time possible in an
+// int32_t) to avoid it kicking in during tests. The maintenance can take a
+// relatively long time which may cause unnecessary intermittents and slow down
+// tests. This, like many things, will stop working correctly in 2038.
+user_pref("places.database.lastMaintenance", 2147483647);
+// For Firefox 52 only, ESR will support non-Flash plugins while release will
+// not, so we keep testing the non-Flash pathways
+user_pref("plugin.load_flash_only", false);
+user_pref("privacy.trackingprotection.introURL", "http://{server}/trackingprotection/tour");
+user_pref("security.default_personal_cert", "Select Automatically"); // Need to client auth test be w/o any dialogs
+// Existing tests don't wait for the notification button security delay
+user_pref("security.notification_enable_delay", 0);
+// Make sure SSL Error reports don't hit the network
+user_pref("security.ssl.errorReporting.url", "https://example.com/browser/browser/base/content/test/general/ssl_error_reports.sjs?succeed");
+// Make enablePrivilege continue to work for test code. :-(
+user_pref("security.turn_off_all_security_so_that_viruses_can_take_over_this_computer", true);
+user_pref("security.warn_viewing_mixed", false);
+// Ensure blocklist updates don't hit the network
+user_pref("services.settings.server", "http://{server}/dummy-kinto/v1");
+user_pref("shell.checkDefaultClient", false);
+// Disable password capture, so that mochitests that include forms aren't
+// influenced by the presence of the persistent doorhanger notification.
+user_pref("signon.rememberSignons", false);
+user_pref("startup.homepage_welcome_url", "about:blank");
+user_pref("startup.homepage_welcome_url.additional", "");
+user_pref("test.mousescroll", true);
+// Don't send 'bhr' ping during tests, otherwise the testing framework might
+// wait on the pingsender to finish and slow down tests.
+user_pref("toolkit.telemetry.bhrPing.enabled", false);
+// Don't send the 'first-shutdown' during tests, otherwise tests expecting
+// main and subsession pings will fail.
+user_pref("toolkit.telemetry.firstShutdownPing.enabled", false);
 // Don't send 'new-profile' ping on new profiles during tests, otherwise the testing framework
 // might wait on the pingsender to finish and slow down tests.
 user_pref("toolkit.telemetry.newProfilePing.enabled", false);
-// Don't send 'bhr' ping during tests, otherwise the testing framework might
-// wait on the pingsender to finish and slow down tests.
-user_pref("toolkit.telemetry.bhrPing.enabled", false);
+// We want to collect telemetry, but we don't want to send in the results.
+user_pref("toolkit.telemetry.server", "https://{server}/telemetry-dummy/");
 // Don't send the 'shutdown' ping using the pingsender on the first session using
 // the 'pingsender' process. Valgrind marks the process as leaky (e.g. see bug 1364068
 // for the 'new-profile' ping) but does not provide enough information
 // to suppress the leak. Running locally does not reproduce the issue,
 // so disable this until we rewrite the pingsender in Rust (bug 1339035).
 user_pref("toolkit.telemetry.shutdownPingSender.enabledFirstSession", false);
-// Don't send the 'first-shutdown' during tests, otherwise tests expecting
-// main and subsession pings will fail.
-user_pref("toolkit.telemetry.firstShutdownPing.enabled", false);
-
 // A couple of preferences with default values to test that telemetry preference
 // watching is working.
 user_pref("toolkit.telemetry.test.pref1", true);
 user_pref("toolkit.telemetry.test.pref2", false);
-
-// We don't want to hit the real Firefox Accounts server for tests.  We don't
-// actually need a functioning FxA server, so just set it to something that
-// resolves and accepts requests, even if they all fail.
-user_pref("identity.fxaccounts.auth.uri", "https://{server}/fxa-dummy/");
-
-// Ditto for all the FxA content root URI.
-user_pref("identity.fxaccounts.remote.root", "https://{server}/");
-
-// 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.
-user_pref("apz.content_response_timeout", 60000);
-
-// Make sure SSL Error reports don't hit the network
-user_pref("security.ssl.errorReporting.url", "https://example.com/browser/browser/base/content/test/general/ssl_error_reports.sjs?succeed");
-
-// Make sure Translation won't hit the network.
-user_pref("browser.translation.bing.authURL", "http://{server}/browser/browser/components/translation/test/bing.sjs");
-user_pref("browser.translation.bing.translateArrayURL", "http://{server}/browser/browser/components/translation/test/bing.sjs");
-user_pref("browser.translation.yandex.translateURLOverride", "http://{server}/browser/browser/components/translation/test/yandex.sjs");
-user_pref("browser.translation.engine", "bing");
-
-// Make sure we don't try to load snippets from the network.
-user_pref("browser.aboutHomeSnippets.updateUrl", "nonexistent://test");
-
-// Use an empty list of sites to avoid fetching
-user_pref("browser.newtabpage.activity-stream.default.sites", "");
-user_pref("browser.newtabpage.activity-stream.telemetry", false);
-user_pref("browser.newtabpage.activity-stream.tippyTop.service.endpoint", "");
-user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false);
-user_pref("browser.newtabpage.activity-stream.feeds.snippets", false);
-
-// Ensure UITour won't hit the network
-user_pref("browser.uitour.pinnedTabUrl", "http://{server}/uitour-dummy/pinnedTab");
-user_pref("browser.uitour.url", "http://{server}/uitour-dummy/tour");
-
-// Tell the search service we are running in the US.  This also has the desired
-// side-effect of preventing our geoip lookup.
-user_pref("browser.search.isUS", true);
-user_pref("browser.search.countryCode", "US");
-// This will prevent HTTP requests for region defaults.
-user_pref("browser.search.geoSpecificDefaults", false);
-
-// Make sure Shield doesn't hit the network.
-user_pref("app.normandy.api_url", "");
-
-// Make sure PingCentre doesn't hit the network.
-user_pref("browser.ping-centre.staging.endpoint", "");
-user_pref("browser.ping-centre.production.endpoint", "");
-
-user_pref("media.eme.enabled", true);
-
-// Set the number of shmems the PChromiumCDM protocol pre-allocates to 0,
-// so that we test the case where we under-estimate how many shmems we need
-// to send decoded video frames from the CDM to Gecko.
-user_pref("media.eme.chromium-api.video-shmems", 0);
-
-user_pref("media.autoplay.enabled", true);
-
-// Don't use auto-enabled e10s
-user_pref("browser.tabs.remote.autostart", false);
-// Don't show a delay when hiding the audio indicator during tests
-user_pref("browser.tabs.delayHidingAudioPlayingIconMS", 0);
-// Don't forceably kill content processes after a timeout
-user_pref("dom.ipc.tabs.shutdownTimeoutSecs", 0);
-
-// Make tests run consistently on DevEdition (which has a lightweight theme
-// selected by default).
-user_pref("lightweightThemes.selectedThemeID", "");
-
-// Enable speech synth test service, and disable built in platform services.
-user_pref("media.webspeech.synth.test", true);
-
-// Turn off search suggestions in the location bar so as not to trigger network
-// connections.
-user_pref("browser.urlbar.suggest.searches", false);
-
-// Turn off the location bar search suggestions opt-in.  It interferes with
-// tests that don't expect it to be there.
-user_pref("browser.urlbar.userMadeSearchSuggestionsChoice", true);
-
-user_pref("browser.urlbar.usepreloadedtopurls.enabled", false);
-
+// Disable the caret blinking so we get stable snapshot
+user_pref("ui.caretBlinkTime", -1);
 user_pref("webextensions.tests", true);
-user_pref("startup.homepage_welcome_url", "about:blank");
-user_pref("startup.homepage_welcome_url.additional", "");
-
-// For Firefox 52 only, ESR will support non-Flash plugins while release will
-// not, so we keep testing the non-Flash pathways
-user_pref("plugin.load_flash_only", false);
-
-// Don't block old libavcodec libraries when testing, because our test systems
-// cannot easily be upgraded.
-user_pref("media.libavcodec.allow-obsolete", true);
-
-user_pref("media.openUnsupportedTypeWithExternalApp", false);
-
-// Disable password capture, so that mochitests that include forms aren't
-// influenced by the presence of the persistent doorhanger notification.
-user_pref("signon.rememberSignons", false);
-
-// Enable form autofill feature testing.
-user_pref("extensions.formautofill.available", "on");
-
-// Disable all recommended Marionette preferences for Gecko tests.
-// The prefs recommended by Marionette are typically geared towards
-// consumer automation; not vendor testing.
-user_pref("marionette.prefs.recommended", false);
-
-// Disable Screenshots by default for now
-user_pref("extensions.screenshots.disabled", true);
-
-// Set places maintenance far in the future (the maximum time possible in an
-// int32_t) to avoid it kicking in during tests. The maintenance can take a
-// relatively long time which may cause unnecessary intermittents and slow down
-// tests. This, like many things, will stop working correctly in 2038.
-user_pref("places.database.lastMaintenance", 2147483647);
-
-// Disable Bookmark backups by default.
-user_pref("browser.bookmarks.max_backups", 0);
+user_pref("xpinstall.signatures.required", false);
new file mode 100755
--- /dev/null
+++ b/testing/profiles/profile
@@ -0,0 +1,220 @@
+#!/bin/sh
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# The beginning of this script is both valid shell and valid python,
+# such that the script starts with the shell and is reexecuted python
+'''which' mach > /dev/null 2>&1 && exec mach python "$0" "$@" ||
+echo "mach not found, either add it to your \$PATH or run this script via ./mach python testing/profiles/profile"; exit
+'''
+
+from __future__ import absolute_import, unicode_literals, print_function
+
+"""This script can be used to:
+
+    1) Show all preferences for a given suite
+    2) Diff preferences between two suites or profiles
+    3) Sort preference files alphabetically for a given profile
+
+To use, either make sure that `mach` is on your $PATH, or run:
+    $ ./mach python testing/profiles/profile <args>
+
+For more details run:
+    $ ./profile -- --help
+"""
+
+import json
+import os
+import sys
+from argparse import ArgumentParser
+from itertools import chain
+
+from mozprofile import Profile
+from mozprofile.prefs import Preferences
+
+here = os.path.abspath(os.path.dirname(__file__))
+
+try:
+    import jsondiff
+except ImportError:
+    from mozbuild.base import MozbuildObject
+    build = MozbuildObject.from_environment(cwd=here)
+    build.virtualenv_manager.install_pip_package("jsondiff")
+    import jsondiff
+
+
+def read_prefs(profile, pref_files=None):
+    """Read and return all preferences set in the given profile.
+
+    :param profile: Profile name relative to this `here`.
+    :returns: A dictionary of preferences set in the profile.
+    """
+    pref_files = pref_files or Profile.preference_file_names
+    prefs = {}
+    for name in pref_files:
+        path = os.path.join(here, profile, name)
+        if not os.path.isfile(path):
+            continue
+
+        try:
+            prefs.update(Preferences.read_json(path))
+        except ValueError:
+            prefs.update(Preferences.read_prefs(path))
+    return prefs
+
+
+def read(key):
+    """Read preferences relevant to either a profile or suite.
+
+    :param key: Can either be the name of a profile, or the name of
+                a suite as defined in suites.json.
+    """
+    with open(os.path.join(here, 'profiles.json'), 'r') as fh:
+        profiles = json.load(fh)
+
+    if key in profiles:
+        names = profiles[key]
+    elif os.path.isdir(os.path.join(here, key)):
+        names = [key]
+    else:
+        raise ValueError('{} is not a recognized suite or profile'.format(key))
+
+    prefs = {}
+    for profile in names:
+        prefs.update(read_prefs(profile))
+    return prefs
+
+
+def diff(a, b):
+    """Diff two profiles or suites.
+
+    :param a: The first profile or suite name.
+    :param b: The second profile or suite name.
+    """
+    prefs_a = read(a)
+    prefs_b = read(b)
+    res = jsondiff.diff(prefs_a, prefs_b, syntax='symmetric')
+    if not res:
+        return 0
+
+    if isinstance(res, list) and len(res) == 2:
+        res = {
+            jsondiff.Symbol('delete'): res[0],
+            jsondiff.Symbol('insert'): res[1],
+        }
+
+    modified = [(k, v) for k, v in res.items() if not isinstance(k, jsondiff.Symbol)]
+    if modified:
+        print("modified ({} => {}):".format(a, b))
+        for k, v in sorted(modified):
+            del prefs_a[k]
+            print("  {}: {} => {}".format(k, repr(v[0]), repr(v[1])))
+
+    label_map = {
+        'insert': 'missing in {}'.format(a),
+        'delete': 'missing in {}'.format(b),
+    }
+
+    symbols = [(k, v) for k, v in res.items() if isinstance(k, jsondiff.Symbol)]
+    for sym, value in symbols:
+        prefs = []
+        for k, v in value.items():
+            if k in prefs_a:
+                del prefs_a[k]
+            prefs.append("  {}: {}".format(k, repr(v)))
+        print("\n{}:\n{}".format(label_map.get(sym.label, sym.label), "\n".join(sorted(prefs))))
+
+    if prefs_a:
+        print("\nidentical:")
+        for k, v in sorted(prefs_a.items()):
+            print("  {}: {}".format(k, repr(v)))
+
+
+def sort_file(path):
+    """Sort the given pref file alphabetically, preserving preceding comments
+    that start with '//'.
+
+    :param path: Path to the preference file to sort.
+    """
+    with open(path, 'r') as fh:
+        lines = fh.readlines()
+
+    result = []
+    buf = []
+    for line in lines:
+        line = line.strip()
+        if not line:
+            continue
+
+        if line.startswith('//'):
+            buf.append(line)
+            continue
+
+        if buf:
+            result.append(buf + [line])
+            buf = []
+            continue
+
+        result.append([line])
+
+    result = sorted(result, key=lambda x: x[-1])
+    result = chain(*result)
+
+    with open(path, 'w') as fh:
+        fh.write('\n'.join(result))
+
+
+def sort(profile):
+    """Sort all prefs in the given profile alphabetically. This will preserve
+    comments on preceding lines.
+
+    :param profile: The name of the profile to sort.
+    """
+    pref_files = Profile.preference_file_names
+
+    for name in pref_files:
+        path = os.path.join(here, profile, name)
+        if os.path.isfile(path):
+            sort_file(path)
+
+
+def show(suite):
+    """Display all prefs set in profiles used by the given suite.
+
+    :param suite: The name of the suite to show preferences for. This must
+                  be a key in suites.json.
+    """
+    for k, v in sorted(read(suite).items()):
+        print("{}: {}".format(k, repr(v)))
+
+
+def cli(args=sys.argv[1:]):
+    parser = ArgumentParser()
+    subparsers = parser.add_subparsers()
+
+    diff_parser = subparsers.add_parser('diff')
+    diff_parser.add_argument('a', metavar='A',
+                             help="Path to the first profile or suite name to diff.")
+    diff_parser.add_argument('b', metavar='B',
+                             help="Path to the second profile or suite name to diff.")
+    diff_parser.set_defaults(func=diff)
+
+    sort_parser = subparsers.add_parser('sort')
+    sort_parser.add_argument('profile', help="Path to profile to sort preferences.")
+    sort_parser.set_defaults(func=sort)
+
+    show_parser = subparsers.add_parser('show')
+    show_parser.add_argument('suite', help="Name of suite to show arguments for.")
+    show_parser.set_defaults(func=show)
+
+    args = vars(parser.parse_args(args))
+    func = args.pop('func')
+    func(**args)
+
+
+if __name__ == '__main__':
+    sys.exit(cli())