Mohammad Nasir Uddin Assistant Teacher Jhulonpole Govt. Primary School Mirsari, Chittagong.
Nasir Eisty Assistant Professor Testing and Code Review ...
Transcript of Nasir Eisty Assistant Professor Testing and Code Review ...
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Testing and Code Review Practices in Research
Software
Nasir EistyAssistant ProfessorDept. of CSSECal Poly State UniversitySan Luis Obispo, California
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Who Am I?
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Metric Process
Research Software
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Software Quality
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• Software Testing
Part #1
• Peer Code Review
Part #2
Contents
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Recommendation
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Part #1
Testing Research Software: A survey
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Online Survey
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Part #1 (Testing) Outline
• Demographics
• Level of knowledge research software developers have on testing
• Current testing practices in research software community
• Difficulties to test research software
• Compatibility of Commercial/IT testing techniques
• Improvement of the testing process in research software
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Part #1 (Testing) Outline
• Demographics
• Level of knowledge research software developers have on testing
• Current testing practices in research software community
• Difficulties to test research software
• Compatibility of Commercial/IT testing techniques
• Improvement of the testing process in researach software
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Roles
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Project Stage
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# Developers
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Part #1 (Testing) Outline
• Demographics
• Level of knowledge research software developers have on testing
• Current testing practices in research software community
• Difficulties to test research software
• Compatibility of Commercial/IT testing techniques
• Improvement of the testing process in research software
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Knowledge of Testing
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Understanding Testing Concepts USED
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Understanding Testing Concepts NEEDED
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Part #1 (Testing) Outline
• Demographics
• Level of knowledge research software developers have on testing
• Current testing practices in research software community
• Difficulties to test research software
• Compatibility of Commercial/IT testing techniques
• Improvement of the testing process in research software
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Level 0 Level 1 Level 2 Level 3 Level 4
Testing Goals
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Level 4 – Testing is a mental discipline that helps all researchers develop higher quality softwareLevel 1 – The Purpose of testing is to show correctnessLevel 3 – The Purpose of testing is not to prove anything specific, but to reduce the risk of using the software
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Unit Integration System Acceptance Module
Testing Methods Used
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Usefulness
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Part #1 (Testing) Outline
• Demographics
• Level of knowledge research software developers have on testing
• Current testing practices in research software community
• Difficulties to test research software
• Compatibility of Commercial/IT testing techniques
• Improvement of the testing process in research software
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Complexity to Test
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OtherCost
Legacy codeCodebase
Comparing with realityAffects CI
CultureSlow
Lack of knowledgeExternal dependencies
Lack of resourcesTest case design
Challenges
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Part #1 (Testing) Outline
• Demographics
• Level of knowledge research software developers have on testing
• Current testing practices in research software community
• Difficulties to test research software
• Compatibility of Commercial/IT testing techniques
• Improvement of the testing process in research software
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Commercial/IT Testing Methods - Team
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Value Seen in Comm/IT Testing Methods
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OtherRuntime restrictions
Difficult to useCost
InfrastructureLack of knowledge
MindsetLack of resources
Not useful
Challenges to Adapt Comm/IT Methods
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Other
Benchmarks
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Lack of expertise
Challenges Not Met by Comm/IT Methods
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Part #1 (Testing) Outline
• Demographics
• Level of knowledge research software developers have on testing
• Current testing practices in research software community
• Difficulties to test research software
• Compatibility of Commercial/IT testing techniques
• Improvement of the testing process in research software
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ResourcesMake simpler
AutomationContinuous integration
CultureImprove code quality
AcknowledgementInfrastructure
More testsTraining
Testing Improvements
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Discussion
• Researchers pose a clear goal of testing their project
• Complexity associated with the process needs further attention
• Make a culture of testing in the research software community.
• Providing proper training and resources can improve the testing process in research software.
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Part #2
Peer Code Review in Research Software
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Interview & Survey
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Part #2 (Code Review) Outline
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• Demographics
• Current code review practices in research software
• Impacts of the code review process in research software
• Difficulties develpers face during code review
• Potential areas of improvement in the review process
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Part #2 (Code Review) Outline
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• Demographics
• Current code review practices in research software
• Impacts of the code review process in research software
• Difficulties develpers face during code review
• Potential areas of improvement in the review process
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Add newcode
Fix bugs Reportbugs
Maintainproject
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Role
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Part #2 (Code Review) Outline
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• Demographics
• Current code review practices in research software
• Impacts of the code review process in research software
• Difficulties develpers face during code review
• Potential areas of improvement in the review process
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Percentage of Code Undergo Review
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Time Spent on Code review
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Design
Code mistakes
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OtherUnresponsive author
Difficult taskHard to find reviewers
BottleneckDisagreements
Misunderstand criticismTakes too long
Negative Experience
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Part #2 (Code Review) Outline
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• Demographics
• Current code review practices in research software
• Impacts of the code review process in research software
• Difficulties develpers face during code review
• Potential areas of improvement in the review process
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Sustainability
Improve maintainability
Knowledge sharing
Improve code quality
Why Code Review is Important
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Better styleImproves reliabilityKnowledge sharing
Improve designBetter maintainability
More EyesImprove readability
Correctness
How Code Review Improves Code
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Decrease Code Complexity
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Part #2 (Code Review) Outline
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• Demographics
• Current code review practices in research software
• Impacts of the code review process in research software
• Difficulties develpers face during code review
• Potential areas of improvement in the review process
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Identify problems
Administrative issues
Understanding system
Understanding code
Challenges
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Developer egos
Participation
Finding right people
Phrasing comments
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Part #2 (Code Review) Outline
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• Demographics
• Current code review practices in research software
• Impacts of the code review process in research software
• Difficulties developers face during code review
• Potential areas of improvement in the review process
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0 5 10 15 20 25
OtherFaster response
More timeMore training
IncentiveMore people
ToolingFormalizing process
Improvements
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Discussion• Research software developers employ an informal code
review process
• Code review has an overall positive impact
• Most common difficulty reported by participants is finding time to to do it and understand other people’s code.
• Formalizing the review process by including more people, more training, and providing compensation could potentially improve the code review process.
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Recommendations - Testing
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• Provide enough training on software testing to all kinds of research software developers ranging from graduate students to experienced researchers
• Incorporate more tests that can solve specific needs of the research software
• Provide infrastructure support, for example, a public service for testing including many-tier pricing structure for machine time and a sophisticated testing dashboard
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Recommendations - Testing
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• Provide automation for setting tests and analysis of the results
• Improve continuous integration system to facilitate a better way of testing, especially, the incoming tests during down time
• Make a culture of testing in the team and encourage others by sharing the benefits from the experience of testing
• Improve the quality of the code so that developers can write tests easily
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Recommendations - Testing
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Recommendations - Testing
• Provide proper acknowledgement of developers for contributions in testing
• Make the testing process simpler so that it is easy to adopt in the project
• Provide enough resources to developers so that they can utilize the resources to develop test suits
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Recommendations – Code Review
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Recommendations – Code Review
• Make code review process more formal with a structured guideline for each step of the process
• Try to ensure at least one science review and one technical review
• Include automatic tools in the code review process and train your peer reviewers the best practices to use the tool
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• Encourae more people to participate in the review process and allocate some time to do the review
• Provide incentives or rewards to reviewers to participate in code review
• Allocate sufficient time in the development process to perform code review
• Provide faster feedback to any incoming review request
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Recommendations – Code Review
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• Train reviewers on how to phrase good feedback
• Train developers to forget their egos and accept comments from the reviewers to improve their code
• Make the overall code review process faster
• Provide necessary support from the administrative level that encourages people to participate in the code review process
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Recommendations – Code Review
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AcknowledgementDr. Jeffrey CarverUniversity of Alabama
Dr. George ThiruvathukalLoyola University Chicago
Dr. David BernholdtOak Ridge National Laboratory
Dr. Hai Ah NamLos Alamos National Laboratory
Dr. Danny PerezLos Alamos National Laboratory
Dr. J. Dave MoultonLos Alamos National Laboratory
Dr. Roland HaasNational Center for Supercomputing Applications
Dr. Gabrielle AllenNational Center for Supercomputing Applications
Dr. Daniel KatzNational Center for Supercomputing Application
NSF grant 1445344
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