What is UAT in general ?

Overview

UAT (User Acceptance Testing) is the final phase of software testing where real users or stakeholders test the application to verify it meets business requirements before going live.

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What is UAT?

UAT answers the question: "Does the software do what the business needs it to do?"

It is performed after:

• Unit Testing ✅
• Integration Testing ✅
• System Testing ✅
• UAT ← Final gate before production

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Types of UAT

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UAT Process

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1. PLAN      → Define test scenarios based on user stories
2. DESIGN    → Create UAT test cases from business requirements
3. EXECUTE   → Real users test the app in a staging environment
4. REPORT    → Document bugs, issues, feedback
5. SIGN-OFF  → Stakeholders approve → Go-live authorized

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UAT in Mobile App Development

For a Flutter app, UAT typically involves:

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Staging Environment:
├── Test build distributed via Firebase App Distribution / TestFlight
├── Real users test key flows:
│   ├── Registration & Login
│   ├── Core features (payment, booking, etc.)
│   ├── Edge cases (no internet, low battery)
│   └── Cross-device validation (different screen sizes)
├── Feedback collected via Jira, Trello, or bug tracking tool
└── Sign-off document signed by product owner

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UAT vs QA Testing

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Distributing Flutter App for UAT

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# Firebase App Distribution (Android + iOS)
firebase appdistribution:distribute build/app/outputs/apk/release/app-release.apk \
  --app $FIREBASE_APP_ID \
  --groups "uat-testers" \
  --release-notes "UAT build v1.2.3 — please test payment flow"

# iOS via TestFlight
# Archive in Xcode → Upload to App Store Connect → TestFlight → Add testers

Key Point: UAT is the final checkpoint before release. A successful UAT sign-off from stakeholders is the green light to deploy to production.