Quantum/DOM/Test Plan

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To define what we want to test to verify the work for Quantum DOM doesn't break the Web. Release criteria and/or aspirational performance gains we expect to achieve will be tracked elsewhere


  • We will test by regular browsing and notable the Alexa top 100 and sites with resources on the tracking protection list
  • Testing with some of the prefs for the Quantum DOM work varied will also be done


Developers: :billm, :smaug, :ehsan, :bevis, :farre Manager: :overholt QA: Paul Oiegas, Carmen Făt (and others?)

Testing summary

Scope of Testing

In Scope

The interaction of foreground and background tabs. The behavior of pages that are loaded in background tabs (e.g. Push messages should still work; background XHR things should still function (think GMail auto-refresh)).

Out of Scope

Browser UI issues. Anything that happens in a non-Quantum DOM build (e.g. website breakage, odd layout issues). When in doubt: file a bug :)

Requirements for testing


All tier 1 desktop operating systems. A variety of hardware capabilities (e.g. a low-power netbook and a high-spec laptop or desktop) would be nice but is not required. There are some prefs that will need to be flipped. More info. forthcoming.


Channel dependent settings (configs) and environment setups







Post Beta / Release


Test Strategy

Test Objectives

This section details the progression test objectives that will be covered. Please note that this is at a high level. For large projects, a suite of test cases would be created which would reference directly back to this master. This could be documented in bullet form or in a table similar to the one below.

Ref Function Test Objective Evaluation Criteria Test Type Owners
1 Name of the feature or sub-function being tested The objective the test is trying to demonstrate The criteria that will be evaluated to demonstrate the test is successful Manual/ Automation/ Regression/ Performance/ Usability/ Security/ Telemetry Eng Team
2 Repeat for each feature/sub-function


This section should contain links for builds with the feature -

  • Links for Nightly builds
  • Links for Aurora builds
  • Links for Beta builds

Test Execution Schedule

The following table identifies the anticipated testing period available for test execution.

Project phase Start Date End Date
Start project
Study documentation/specs received from developers
QA - Test plan creation
QA - Test cases/Env preparation
QA - Nightly Testing
QA - Aurora Testing
QA - Beta Testing
Release Date

Testing Tools

Detail the tools to be used for testing, for example see the following table:

Process Tool
Test plan creation Mozilla wiki
Test case creation TestRail/ Google docs
Test case execution TestRail
Bugs management Bugzilla



Track the dates and build number where feature was released to Nightly
Track the dates and build number where feature was merged to Aurora
Track the dates and build number where feature was merged to Release/Beta

Risk analysis

Identify the high-risk assumptions
Identify existing bugs on the feature with high risk
Identify if other areas are affected by the fix


  • List and links for specs
 List and links for available specs - documents, user stories, specifications
  • Meta bug



Summary of testing scenarios

Test Areas

Test Areas Covered Details
Private Window
Multi-Process Enabled
Multi-process Disabled
Theme (high contrast)
Mouse-only operation
Keyboard-only operation
Display (HiDPI)
Interraction (scroll, zoom)
Usable with a screen reader e.g. with NVDA
Usability and/or discoverability testing Is this feature user friendly
RTL build testing
Help/support interface required Make sure link to support/help page exist and is easy reachable.
Support documents planned(written) Make sure support documents are written and are correct.
Feature upgrades/downgrades data as expected
Does sync work across upgrades
Requires install testing separate feature/application installation needed (not only Firefox)
Affects first-run or onboarding Florin/Lawrence are investigating if there is a dedicated QA for this, or we should test? Should be an yes/no and if is yes should add in detail column the team/person assigned.
Does this affect partner builds? Partner build testing yes/no options, add comment with details about who will lead testing
Enterprise Raise up the topic to developers to see if they are expecting to work different on ESR builds
Enterprise administration
Network proxies/autoconfig
ESR behavior changes
Locked preferences
Data Monitoring
Temporary or permanent telemetry monitoring List of error conditions to monitor
Telemetry correctness testing
Server integration testing
Offline and server failure testing
Load testing
Add-ons If add-ons are available for testing feature, or is current feature will affect some add-ons, then API testing should be done for the add-on.
Addon API required?
Comprehensive API testing
Testing with existing/popular addons
Security Security is in charge of Matt Wobensmith. We should contact his team to see if security testing is necessary for current feature.
3rd-party security review
Privilege escalation testing
Web Compatibility depends on the feature
Testing against target sites
Survey of many sites for compatibility
Interoperability depends on the feature
Common protocol/data format with other software: specification available. Interop testing with other common clients or servers.
Coordinated testing/interop across the Firefoxes: Desktop, Android, iOS
Interaction of this feature with other browser features

Test suite

Full Test suite - Link with the gdoc, follow the format from link
Smoke Test suite - Link with the gdoc, follow the format from link
Regression Test suite - Link with the gdoc - if available/needed.

Bug Work

Tracking bug – meta bug

Bug fix verification
Bug No Summary Status Firefox Verion
123 bug summary NEW Nighly 45
Logged bugs

Bug 111111
Bug 211111

Sign off


Check list

  • All test cases should be executed
  • Has sufficient automated test coverage (as measured by code coverage tools) - coordinate with RelMan
  • All blockers, criticals must be fixed and verified or have an agreed-upon timeline for being fixed (as determined by engineering/RelMan/QA)


Nightly testing

List of OSes that will be covered by testing

  • Link for the tests run
    • Daily Smoke, use template from link
    • Full Test suite, use template from link
    • Regression Test suite, if needed/available

Merge to Aurora Sign-off List of OSes that will be covered by testing

  • Link for the tests run
    • Full Test suite


Exit Criteria Status Notes/Details
Testing Prerequisites (specs, use cases)
Testing Infrastructure setup
Test Plan Creation
Test Cases Creation
Full Functional Tests Execution
Automation Coverage
Performance Testing
All Defects Logged
Critical/Blockers Fixed and Verified
QA Signoff - Nightly Release Email to be sent
QA Aurora - Full Testing
QA Signoff - Aurora Release Email to be sent
QA Beta - Full Testing
QA Signoff - Beta Release Email to be sent