QA/LZMA Support for Updater

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Approvals Required / Received

The following individuals are required to/have approved this Test Plan:

Name Title Department Approval Date Method
RyanVM QA Reviewer Product Integrity n/a Email
Matt Howell Software Engineer Engineering 6/14/2017 Email
David Durst EPM Product Management n/a Email

Revision History

This section describes the modifications that have been made to this wiki page. A new row has been completed each time the content of this document is updated (small corrections for typographical errors do not need to be recorded). The description of the modification contains the differences from the prior version, in terms of what sections were updated and to what extent.

Date Version Author Description
6/7/2017 1.0 Abe Masresha Created first draft
6/13/2017 1.1 Abe Masresha Added link to automation tests and test cases
8/10/2017 1.2 Abe Masresha added signoffs date and other links
8/14/2017 1.3 Abe Masresha adding more information to the test plan



The purpose of this work is to change the update file format using LZMA compression because LZMA compression provides more file compression benefit over the current bzip2 compression.


  • Testing will focus on:
Stability of the browser with this work.
Whether browser update is applied successfully
If the browser update is in the desired file format
  • How testing will be performed:
  • Automation is covered by the developer


Mozilla Development
Matt Howell

QA Eng. Softvision Las Vegas - Nightly testing
Abe Masresha

QA - Beta testing
Petruta Rasa

Testing summary

Scope of Testing

In Scope

This feature will be tested manually on Windows, Mac, and Linux operating systems.

Automation is handled by the developer
Automated tests:


Out of Scope

Mobile devices are not affected by this work so this testing does not include them

tests/unit unit]

Requirements for testing


Windows 10 64bits
Windows 7 32bits
Ubuntu 16.04 32 and 64bits
MacOSX 10.12

Channel dependent settings (configs) and environment setups


Firefox Nightly 56.0a1, Test environment setting is provided here
This patch was pushed to Mozilla-central on 7-31-2017, so all older Nightly should update through this update watershed.


Beta 56.0b3, Test environment setting is provided here
Feature was backed out Bug 1387231 so the new update watershed of beta will be 56b3.
To test on 56b3, the next beta build (56b4) should be avialable as this is an update related work.

Test Strategy

Risk Assessment and Coverage

ID Description / Threat Description Covered by Test Objective Magnitude Probability Priority Impact Score
RAC-1 Update may not be applied to the browser TO-1 3-High 2-Possible 3-High 18
RAC-2 Update may not be applied successfully if the browser has add-on TO-2 3-High 2-Possible 2-Medium 12
RAC-3 The update file may not be in desired MAR file format TO-3 2-Moderate 1-Unlikely 2-Medium 4
RAC-4 May behave differently if update download is interrupted by no internet connection TO-4 2-Moderate 1-Unlikely 2-Medium 4
RAC-5 May behave differently in different operating systems TO-5 2-Moderate 1-Unlikely 2-Medium 4


  • Magnitude: 1- Low , 2-Moderate, 3-High
  • Probability: 1-Unlikely, 2-Possible, 3-Almost Certain
  • Priority: 1 - Low, 2-Medium, 3-High

Impact Score Breakdown:

  • An impact value of 1, 2, 3, 4 would describe an area which although should be covered there aren't expected any discoveries of critical issues.
  • An impact value of 6, 8, 9, 12 would describe an area in which we expect to find issues but those issues are not expected to be critical.
  • An impact value of 18 or 27 would describe an area on which it is likely to find issues and those issues to be critical or blockers.

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.

Ref Function Test Objective Evaluation Criteria Test Type RAC Owners
1 Update the browser Browser should update to its latest build update the browser Manual RAC-1,RAC-2,RAC-4,RAC-5 Eng Team
2 Check the update file format The update file should be in desired MAR file format Check if the file is in MAR format. steps are here Manual RAC-3 Eng Team


This section should contain links for builds with the feature -

  • Links for Nightly build: Nightly build
  • Links for Beta build: use beta build later than 56b3

Test Execution Schedule

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

Project phase Start Date End Date
Start project 5/30/2017 9/25/2017
Study documentation/specs received from developers 6/7/2017 8/14/2017
QA - Test plan creation 6/7/2017 8/14/2017
QA - Test cases/Env preparation 7/31/2017 8/31/2017
QA - Nightly Testing 8/1/2017 8/1/2017
QA - Beta Testing 8/10/2017 9/8/2017
Release Date 9/19/2017 9/26/2017

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
Test case execution TestRail
Bugs management Bugzilla



Landed on Nightly on: 7/31/2017
Merged to Beta on: Beta 56b3 will have the patch so start the testing when 56b4 is ready.



Test Areas

Test Areas Covered Details
Private Window Yes user should be able to get update from private window as well
Multi-Process Enabled Yes user should be able to get update from e10s window
Multi-process Disabled Yes user should be able to get update from Non e10s window as well
Theme (high contrast) Yes high theme shouldnot affect the update
Feature upgrades /Browser update Yes Will be covered on browser updates
Testing with existing/popular addons Yes Feature functionality will be tested with popular addons
Web Compatibility
Survey of popular sites for compatibility Yes Firefox will be tested for stability with popular sites
Interaction of this feature with other browser features Yes Feature will be tested for its interaction with other browser features

Test suite

Full Test suite - test rail

Bug Work

Bug No Summary Status Firefox Version
None in pre-beta testing cycle 56
None during Beta testing cycle 56

Sign off



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


Nightly testing
List of OSes that will be covered by testing: see 'Environments' section

    • Links:
    • Full Test suite
    • Runs and Results
    • Daily Smoke -not applicable to the pre-beta test cycle as the test build was landed on the last day of the pre-beta sign off
    • Regression Test suite, No regression bugs were found

Preliminary status report on Beta
Preliminary status report analysis shows that updating from Firefox 55.0bX, updates first to 56.0b3 and then to latest beta available on the channel. Also, update.mar files are correct and have the right format. Preliminary recommendation is to "ship it".

Pre-Release Sign-off - GREEN 2017-09-06

  • List of OSes covered by testing: Windows 7 64-bit, Windows 10 64-bit, Ubuntu 16.04 64-bit and Mac OS X 10.11
    • Link for the tests run - link
    • Regression Test suite, No regression bugs were found


Exit Criteria Status Notes/Details
Testing Prerequisites (specs, use cases) [DONE]
Testing Infrastructure setup [DONE]
Test Plan Creation [DONE]
Test Cases Creation [DONE]
Automation Coverage [DONE] Covered by developer
Performance Testing [DONE] Covered by developer
All Defects Logged N/A No bugs found on pre-beta signoff
Critical/Blockers Fixed and Verified N/A
QA mid-Nightly Signoff [MISSED] Missed (test build was not ready)
QA pre-Beta Signoff [DONE] Email sent on 8/1/2017
QA Beta - Full Testing [DONE]
QA pre-Release Signoff [DONE] Email sent on 9/6/2017