ACRUMEN Slides for RubyNation and CapitalGo, 2018

@davearonsonwww.Codosaur.us
ACRUMEN:
Key Aspects of Software Quality
by Dave Aronson
Slides at:
https://bit.ly/acrumen-rn-cg-2018

Do you like low quality software?

We need more software quality!

What is software quality?!

Who is this clown?

Experienced Developer

T. Rex of Codosaurus, LLC

Previous attempts:

So zoom out . . .

. . . to six aspects . . .

. . . with simple names and explanations . . .

. . . from many points of view.
+

Acrumen: Latin for sour fruit

ACRUMEN: Prioritized acronym of aspects

does the right job
does the job right
hard to make misbehave
easy (for users) to use
easy (for devs) to change
efficiently uses resources
So what are the aspects already?!
Appropriate
Correct
Robust
Usable
Maintainable
Efficient
Software should be:
:
:
:
:
:
:

N stands for… Nothing! Just makes a word.

The Importance of Being Appropriate
≠

Achieving Appropriate: Requirements Experts?

Achieving Appropriate: Talk to stakeholders!

Achieving Appropriate: Mockups, Prototypes, Demos

Achieving Appropriate: Propose Tests!

How do we know it’s Correct?

Achieving Correct: Proven by Tests!

Achieving Correct: Start with “appropriate” tests (high-level)

Achieving Correct: Low-level tests too

Defining Robust: Hard to make it misbehave
Confidentiality
Availability
Integrity

Uphold Confidentiality: Don’t Reveal Info (w/o authorization)

Uphold Integrity: Don’t Alter Info (w/o authorization)

Uphold Availability: Don’t Be Unavailable (w/o authorization)

Defining Robust: Uphold CIA Triad even under attack

Achieving Robust: What could go wrong?

Achieving Robust: Think Like an Attacker

Achieving Robust: Handle Likely Problems

Defining Usable: Clarity

Defining Usable: What Else Can It Do?
But wait!

There’s more!

Defining Usable: Easy Despite Challenges

Achieving Usable: Usability (better, UX) Experts?

Achieving Usable: Guidelines, Standards, and Regulations

Achieving Usable: Testing!

Defining Maintainable: Easy to Change

Defining Maintainable: …with low fear of error…

Defining Maintainable: …and low chance of error…

Defining Maintainable: …even for a novice…

Defining Maintainable: …new to the project.

Achieving Maintainable: Good Names

Achieving Maintainable: Single Responsibility

Achieving Maintainable: Tests!

Efficient Use of Resources

Achieving Efficient: Measure!

Achieving Efficient: Algorithms and Data Structures

If our software is

Appropriate,

Correct,

Robust,

Usable,

Maintainable, and

Efficient, then

Nobody should be sour about it!
Conclusion

Image Credits, just to keep things legal; all images are either mine, used by permission,

or found on Google Image Search with reusable-license filter (some requiring credit but not all)
Alterations: http://www.barksdale.af.mil/News/Article/321176/military-clothing-sales-reopens-inside-base-exchange/
Billy Mays: https://commons.wikimedia.org/wiki/File:Billy_Mays_headshot.jpg
Boards High Up: https://pixabay.com/en/boards-height-balance-2040575/
Business Silhouettes: http://www.publicdomainpictures.net/view-image.php?image=57465
Calipers: https://pixabay.com/en/diet-calorie-counter-weight-loss-695723/
Change: https://images.pexels.com/photos/259209/pexels-photo-259209.jpeg
Checkers: https://commons.wikimedia.org/wiki/File:Draughts.svg
Checklist on clipboard: https://pixabay.com/en/checklist-clip-board-blank-to-do-310092/
Checklist w/o clipboard: https://pixabay.com/en/checklist-list-check-check-list-911840/
Chess: https://bs.wikipedia.org/wiki/Datoteka:AAA_SVG_Chessboard_and_chess_pieces_03.svg
Clear Night Sky: https://pixabay.com/en/british-columbia-canada-clear-lake-2382640/
Darth Vader: https://pixabay.com/en/star-wars-darth-wader-villain-2463926/
Data Structure: https://commons.wikimedia.org/wiki/File:A_diagram_of_the_Aho-Corasick_string_search_algorithm_extracted.png
Dice: https://pxhere.com/en/photo/615255
Easy Button: https://www.flickr.com/photos/slgc/24803618672
Error X: https://commons.wikimedia.org/wiki/File:Dialog-error-round.svg
Experts (tho Road Safety, not Requirements): http://archive.government.ru/eng/multimedia/photo/2013/3/#PhotoSwipe1528053974200
Experts (tho NASA, not UX): https://roundupreads.jsc.nasa.gov/pages.ashx/699/10%20things%20to%20know%20and%20share%20about%20the%20Eclipse%20Across%20America
Eye Tester: https://commons.wikimedia.org/wiki/File:Test_type_to_test_eyesight,_England,_1920-1960_Wellcome_L0058205.jpg
F-35 Flight Test: http://www.hill.af.mil/News/Article-Display/Article/838188/commentary-diamond-in-the-rough-commander-shares-514th-flts-mission/
F-35 Landing Test: http://www.eglin.af.mil/News/Article/814410/marines-fly-first-f-35-stovl-mission-at-eglin/
Feedback Circuit: mine (other than the “?” and the color, this was the TIDMADT logo.)
Glucose Test: https://pxhere.com/en/photo/726931
Handle: https://pixabay.com/en/handle-door-handle-doorknob-lock-1200809/
International Space Station: https://www.flickr.com/photos/nasacommons/8980505397
Lemonade: https://pixabay.com/en/lemonade-lemons-glass-beverage-1447521/
Lemonhead: https://www.maxpixel.net/Face-Fruit-Citrus-Fruit-Angry-Sour-Citron-Lemon-155021
Long List: https://pxhere.com/en/photo/941467
Low Quality: https://pixabay.com/en/bad-review-bad-customer-review-2813741/
Man in Matrix: https://pixabay.com/en/man-despair-problem-null-one-65049/
Name Tags: https://commons.wikimedia.org/wiki/File:NFX_Guild_conference_name_tags.jpg
New Guy: https://commons.wikimedia.org/wiki/File:New_Guy_(5895483627).jpg
Novice: https://pxhere.com/en/photo/796734
One Job: https://bloodredstrider.deviantart.com/art/Fortune-Cookie-Fail-394495312
Ordered List: https://pixabay.com/en/steps-list-ordered-list-items-1496523/
Plan A/B/C: https://pixabay.com/get/ef37b10d21fd1c22d9584518a345479ee277e0d204b014439df0c47ba7eab1/planning-620299_1920.jpg
Potatoes in Pot: https://pixabay.com/en/potatoes-fear-horror-pot-cook-3119211/
Prius: https://www.flickr.com/photos/toyota-europe/6759334043/in/photostream/
Quality Excellence Package: https://pixabay.com/en/software-packaging-quality-500956/
Simple list: https://commons.wikimedia.org/wiki/File:List_icon.svg
Site Unavailable: https://pixabay.com/en/error-www-internet-calculator-101408/
Test Pattern: https://commons.wikimedia.org/wiki/File:RCA_Indian_Head_test_pattern.JPG
The Codosaurus: by Fanie Gregoire, https://www.etsy.com/shop/fanie (used by permission)
Thermos: https://zh.wikipedia.org/wiki/File:Thermoskanne(hoch,_silber).JPG
Ties: https://www.publicdomainpictures.net/en/view-image.php?image=37274
Triangle: https://cdn.pixabay.com/photo/2016/03/31/17/52/geometry-1293961_960_720.png (words mine)
Two Women at Laptop: https://www.flickr.com/photos/wocintechchat/22543243101
Usability Testing: https://www.flickr.com/photos/eekim/1819059803
Viking: https://pixabay.com/en/man-viking-barbarian-machado-1706964/
Weeds: extracted from https://commons.wikimedia.org/wiki/File:Indian_Weeds.jpg
Wireframe Mockups: https://www.flickr.com/photos/qubodup/14793417722
Wizard: https://commons.wikimedia.org/wiki/File:Kandalf_wizard_mascot_kde.png
Woman Programming: https://pxhere.com/en/photo/912909
Wondering Monkey: https://www.pexels.com/photo/brown-monkey-photo-767197/
Your Co's App: Eric Burke of StuffThatHappens.com (defunct)

http://www.Codosaur.us
@davearonson (Twitter)
Questions? Feedback? Training?
?

ACRUMEN Slides for RubyNation and CapitalGo, 2018

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