I introduced Test Pyramid and Bug Filter, DevOps Bug Filter

1. THE DEVOPS BUG FILTER
DEVOPS LT AT 11/27/2017 BY TEPPEI YAMAGUCHI

2. THE DEVOPS BUG FILTER
THE TEST PYRAMID
▸ the proportion of test automation that teams
create at each layer
▸ original model developed by Mike Cohn in
“Succeeding with Agile”(2009)

3. THE DEVOPS BUG FILTER
THE TEST PYRAMID
▸ Many testers have reimagined the testing pyramid
over the years.
▸ Alister Scott: "the manual session-based tests at the top
of the pyramid”
▸ https://watirmelon.blog/2012/01/31/introducing-
the-software-testing-ice-cream-cone/
▸ John Ferguson Smart: "the Discover/Describe/
Demonstrate cycle” [Refer to Appendix]
▸ Richard Bradshaw & John Stevenson: "an alternative
model” [Refer to Appendix]

4. THE DEVOPS BUG FILTER
THE SOFTWARE TESTING ICE-CREAM CONE (ANTI-PATTERN)
▸ Organizations fall into the trap of creating
‘inverted’ pyramids of software testing.
▸ Jonathan Rasmusson said …
I AGREE WITH JULIA WHOLEHEARTEDLY HERE. AN INVERTED TEST PYRAMID
IS BETTER THAN NO PYRAMID. AND IF YOU CAN GET SOME QUICK WINS BY
ADDING SOME SMOKE TESTS, YOU SHOULD DEFINITELY GO FOR IT. JUST
REMEMBER THAT THE INVERTED PYRAMID IS A PLACE—NOT OUR END
DESTINATION. (“THE WAY OF THE WEB TESTER”)

5. THE DEVOPS BUG FILTER
BUG FILTER
▸ Noah Sussman reimagined the test
pyramid as a bug filter in March 2017.
▸ http://infiniteundo.com/post/
158179632683/abandoning-the-pyramid-
of-testing-in-favor-of-a
Image credit: Noah Sussman

6. THE DEVOPS BUG FILTER
THE DEVOPS BUG FILTER
▸ Katrina Clokie reimagined the model for
automation in a DevOps environment.
▸ “A Practical Guide to Testing in DevOps”:
https://leanpub.com/testingindevops

7. THE DEVOPS BUG FILTER
APPENDIX
▸ John Ferguson Smart:
"the Discover/Describe/Demonstrate cycle”
▸ https://johnfergusonsmart.com/test-pyramid-
heresy/
▸ Richard Bradshaw & John Stevenson:
"an alternative model”
▸ http://steveo1967.blogspot.jp/2015/10/mewt4-
post-1-sigh-its-that-pyramid.html