software quality in a modern development team...process quality “individuals and interactions....

Software Quality in a Modern Development TeamPresented by Timothy Bauguess and Marty Lewis

High-Quality SoftwareWho benefits?

• End users• Development• Stakeholders

Components of Software Quality

Functional quality• Specifications• Few defects• User experience

Structural quality• Efficiency• Maintainability• Scalability• Security• Testability

Process Quality

“Individuals and interactionsover processes and tools

Working softwareover comprehensive documentation

Customer collaborationover contract negotiation

Responding to changeover following a plan”

- The Agile Manifesto

Agile Testing Practices• Continuous Integration

• Test the impact of your changes as they are committed

• Test-driven development

• Create the unit test before implementation

• Support tools

• Testing frameworks• Code review • Version control• Work tracking

Why do we test?

Iterate.Test.Deliver to end-users faster!

Benefits of Rapid Development Iterations

Test-Driven Development Paradigm

Write test

Write code for test

Run test

Optional refactoring

Run additional system tests

REPEAT UNTILPASSING

Test-Driven Development Paradigm• Benefits

• High code coverage• Short cycle, highly compatible with Agile methodologies• Test is your spec• Bite-size tasks, focus on one code unit at a time

• Considerations• Spend time up front for requirement validation

• But Minimize rework• New, may be met with resistance to change• Developer focused

Agile Development Methods• Behavior-driven development

• Domain-specific language

Behavior-Driven Development

• Write tests using business readable

and domain-specific language

• Write code to satisfy the testing condition

• Refactor your code to standards.


• Domain-specific language• Behavior-driven development


• Feature-driven development

Feature-Driven Development• Create a platform

independent model

• Build a feature list• <action> <result> <object>

• Construct a schedule

• Design by feature

• Build by feature




• Behavior-driven development• Domain-specific language


• Lean development

Lean Development

• Eliminate waste / rework

• Amplify learning

• Decide as late as possible

• Deliver as quickly as possible

• Empower the team

• Build integrity

• See the whole








• Extreme programming

Extreme Programming• Coding / Iteration

• Listening

• Unit Tests / Acceptance Tests

• Small Releases

Agile Development Methods









• Scrum

Scrum• Sprints

• Continuous Integration

• User stories

• Meetings• Sprint Planning• Daily Stand Up• Sprint Review• Sprint Retrospective

User Stories• Small, manageable work items

• As an admin, I want to approve image uploads, so I can make sure they are appropriate

• Intended user• What the user wants• Why the user wants it

• Acceptance Criteria

• Story points• Velocity

Testing Methodologies

White Box

BlackBox


• Testing as a developer• Testing individual units• Design according to parameters• Data domains well tested• Used to test algorithms

White Box


• Testing as a user• Internals are unknown• Based on output• Fully integrated• Does not test algorithms

BlackBox


White Box

Grey Box

BlackBox

Unit Testing Overview• Tests individual units of code

• Typically white box testing

• Should be able to run in isolation from one another

• Aimed at covering all code paths

• Limited coverage of requirements

• Lowest resources required to maintain

Unit Test Platforms (.NET)• NUnit

• xUnit.net

• MSTest – ships with Visual Studio!1. File New Project2. Write test3. Execute test

Integration Testing Overview

• Tests integrated code units• Functional testing

• Typically black box testing

• Who should write integration tests?

• If UI testing is required, automate it!

Integration Testing Variants

• Smoke testing

• System testing• Testing completely integrated system• Functionality of system as a whole• Test cases and data are used

• Acceptance testing• Purely functional requirements• Ideally, final testing before deployment• Real production data• Can be performed by end users

Integration Test Platforms

• Selenium – web

• CodedUI – web, desktop

• Postman – web service / API

• TestComplete – web, desktop, mobile

• Appium – desktop, mobile

Regression Testing

• Can be unit or integration tests

• Prevent regression of user-impacting issues

• Verify new changes meet previous requirements

• Always run before deploying to users

Improving Our Process Quality

Improving Our Process Quality• Azure DevOps

Improving Our Process Quality• Test repeatability project

• Reliable, maintainable UI automation

• New tools• Agile methodology• VSCode / Visual Studio• Git Flow

Thanks!Who has the first question?

software quality in a modern development team...process quality “individuals and interactions....

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