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Developer + Tester =
Quality++
Mikalai Alimenkou
@xpinjection
http://xpinjection.com
Developer + Tester: customer view
Developer + Tester: customer viewReality is not always
so positive
Some cases are
even worse…
On many projects they are even separated
So, many scary/funny stories exist…
I have tested your code for whole
night, Carl! And found 15 major
defects. In 50 line of code, Carl!
Historical reason is Quality Control
But we need Development Velocity
and Quality instead!
Practice #1. Team Planning
Key ingredients of efficiency
#1. Different points of
view on the same
task, common vision
#2. Questions from
quality and testing
perspectives
#3. Team estimation to
include all aspects (dev,
testing, review, NFRs,
regression, demo)
#4. Clear acceptance
criteria for everybody
#5. Reduce optimism
of developers
Practice #2. Test cases review
Key ingredients of efficiency
#1. Same understanding
of functionality to be
implemented
#2. Developer gets
edge cases, reducing
chance of defects
#3. Split testing
activities, decide test
types and levels
#4. Developer suggests
automation options or
better autotests design
#5. Developer gets
ready scenarios and
data for low level tests
Practice #3. Pair design session
Key ingredients of efficiency
#1. Testability could be
built in to simplify
testing
#2. Decide
implementation order
for early testing
#3. Find ways how to
start test automation
early
#4. Discuss integration
with external systems
and potential issues
#5. Review edge cases
and functional reuse
of existing code
Practice #4. Intermediate demo
Key ingredients of efficiency
#1. Bring true sense of
implementation
progress
#2. Early detection of
defects, potential issues
and bad requirements
#3. Verify common
understanding of
functionality
#4. Lightweight defects
communication
#5. Harder to hide
idleness and
procrastination
Practice #5. Code review
Key ingredients of efficiency
#1. Developer verify
autotests design and
maintainability
#2. Developer suggests
tools, libraries and
frameworks
#3. Tester learns best
practices and improves
coding skills
#4. Developer
understands autotests
better and relies on them
#5. Developer finds
ways to simplify tests
improving testability
Practice #6. Pair testing session
Key ingredients of efficiency
#1. Developer sees how
system is used in
practice and is it usable
#2. Common vision on
the system reduce time
on defect proving
#3. Common
responsibility for
quality
#4. Agree on suitable
defect report format and
how to find details
#5. Tester
demonstrate tools to
simplify local checks
Practice #7. Pair demo
Key ingredients of efficiency
#1. Both developer and
tester could demo new
features
#2. Responsibility causes
more focus on quality
#3. Both improve
communication skills
#4. Demo works not only
on developer’s machine
#5. Demo is prepared
even if developer is
overloaded
Success is always in team work
@xpinjection
http://xpinjection.com
mikalai.alimenkou@xpinjection.com

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Developer + tester = quality++

  • 1. Developer + Tester = Quality++ Mikalai Alimenkou @xpinjection http://xpinjection.com
  • 2.
  • 3.
  • 4. Developer + Tester: customer view
  • 5. Developer + Tester: customer viewReality is not always so positive
  • 7. On many projects they are even separated
  • 8. So, many scary/funny stories exist…
  • 9. I have tested your code for whole night, Carl! And found 15 major defects. In 50 line of code, Carl!
  • 10. Historical reason is Quality Control
  • 11. But we need Development Velocity and Quality instead!
  • 12. Practice #1. Team Planning
  • 13. Key ingredients of efficiency #1. Different points of view on the same task, common vision #2. Questions from quality and testing perspectives #3. Team estimation to include all aspects (dev, testing, review, NFRs, regression, demo) #4. Clear acceptance criteria for everybody #5. Reduce optimism of developers
  • 14. Practice #2. Test cases review
  • 15. Key ingredients of efficiency #1. Same understanding of functionality to be implemented #2. Developer gets edge cases, reducing chance of defects #3. Split testing activities, decide test types and levels #4. Developer suggests automation options or better autotests design #5. Developer gets ready scenarios and data for low level tests
  • 16. Practice #3. Pair design session
  • 17. Key ingredients of efficiency #1. Testability could be built in to simplify testing #2. Decide implementation order for early testing #3. Find ways how to start test automation early #4. Discuss integration with external systems and potential issues #5. Review edge cases and functional reuse of existing code
  • 19. Key ingredients of efficiency #1. Bring true sense of implementation progress #2. Early detection of defects, potential issues and bad requirements #3. Verify common understanding of functionality #4. Lightweight defects communication #5. Harder to hide idleness and procrastination
  • 21. Key ingredients of efficiency #1. Developer verify autotests design and maintainability #2. Developer suggests tools, libraries and frameworks #3. Tester learns best practices and improves coding skills #4. Developer understands autotests better and relies on them #5. Developer finds ways to simplify tests improving testability
  • 22. Practice #6. Pair testing session
  • 23. Key ingredients of efficiency #1. Developer sees how system is used in practice and is it usable #2. Common vision on the system reduce time on defect proving #3. Common responsibility for quality #4. Agree on suitable defect report format and how to find details #5. Tester demonstrate tools to simplify local checks
  • 25. Key ingredients of efficiency #1. Both developer and tester could demo new features #2. Responsibility causes more focus on quality #3. Both improve communication skills #4. Demo works not only on developer’s machine #5. Demo is prepared even if developer is overloaded
  • 26. Success is always in team work