SenchaCon 2016: Developing and Delivering Quality Code, Frequently - Neil Manvar

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This document discusses developing and delivering quality code through continuous integration, continuous delivery, and automated testing. It recommends: - Implementing continuous integration by having developers commit code changes frequently and merging them into a shared codebase, with CI tools running automated tests on each change. - Practicing continuous delivery by making code deployable at any time using techniques like feature toggles and deploying to staging. - Leveraging pull request builds that run automated tests against a branch before code is merged to main to catch issues early and provide developer feedback. - Having QA focus on enabling scaling of testing through improved test coverage and automation, rather than "acting and reacting" to fix broken builds. This allows for

Tecnología

Developing and Delivering
Quality Code, Frequently
Neil Manvar
Solutions Architect, Sauce Labs

Agile In
• Small Iterative Changes
• Rapid response to change
• Agile = Automation
• Focus on business logic

Continuous Integration
• “merging all developer working copies
with a shared mainline…”
• CI Tools
• Pipelines

CD
• Continuous Delivery
• Continuous Deployment
• Code is like “inventory”

Selenium WebDriver
• Controls browser
• Open source
• Language-specific bindings
• Grid

Appium – Functional/UI Testing for Mobile Applications

Running Nightlys or when master changes
11
QA Build
(UT and Func Tests)
PR /
Commit(s)
PR /
Commit(s)

Problems - Running when master changes
• Rollbacks
• Debug build
• Need to pinpoint offending commit
• Late developer feedback
• “Act and React”
• Blocked Pipeline
12

Role of QA
• Fix and debug build - “Act and React”
• Write automated tests for new features and existing functionality
• Manual testing
• Certifying and signing off on build
13

Testing in Isolation – Pull Request Build
14
PR Build
(UT and Func Tests)
QA Build
(UT and Func Tests)
PR
PR
PR Build
Kick of build
against branch
Safe to merge?
Only review and merge
if masked as safe

Benefits of PR Build
• Developer feedback + enforcement mechanism
• Clean and deployable master
• Enable Continuous Delivery -> Leverage Agile
• Leverage Agile
• New features and bug fixes released regularly, with quality and confidence
15

CD Pipeline
16
PR Build
(UT and Func Tests)
QA Build
PR
PR
PR Build
Staging Prod
Kick off build
against PR
branch
Safe to review / merge?
Merge if A/C
satisfied

Role of QA (after)
• QA playing “enablement” role
- Focused on scaling testing and improving quality
• Developers developing (both source and test code)
• Focus on improving coverage (untested flows, browsers + devices)
• Accountability – New standard of quality
17

SenchaCon 2016: Developing and Delivering Quality Code, Frequently - Neil Manvar

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