> ## Documentation Index
> Fetch the complete documentation index at: https://onetest.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Regression Testing Workflow

> Comprehensive testing before releases

<Note>This page is under construction. More content coming soon!</Note>

## What is Regression Testing?

Regression testing ensures that new code changes haven't broken existing functionality. It's typically run before releases or after significant code changes.

<Tip>
  While smoke tests verify "can we continue testing?", regression tests verify "are we ready to ship?"
</Tip>

## When to Run Regression Tests

<CardGroup cols={2}>
  <Card title="Before Release" icon="box">
    Comprehensive validation before shipping to production
  </Card>

  <Card title="After Major Changes" icon="code-merge">
    Verify large features or refactoring didn't break anything
  </Card>

  <Card title="Sprint End" icon="calendar-check">
    Validate all sprint work before demo/release
  </Card>

  <Card title="After Hotfix" icon="fire-extinguisher">
    Ensure hotfix didn't introduce new issues
  </Card>
</CardGroup>

## Building a Regression Suite

<Steps>
  <Step title="Start with Critical Tests">
    Include all smoke tests (P0/P1 critical paths)
  </Step>

  <Step title="Add Feature Coverage">
    Include tests for all major features:

    ```oql theme={null}
    priority IN (p0, p1, p2) AND status = active
    ```
  </Step>

  <Step title="Add Historical Failures">
    Include tests that have failed before:

    ```oql theme={null}
    failure_count > 0 AND status = active
    ORDER BY failure_count DESC
    ```
  </Step>

  <Step title="Tag Tests">
    Tag tests with `regression` for easy filtering:

    ```oql theme={null}
    tags CONTAINS "regression" AND status = active
    ```
  </Step>

  <Step title="Balance Coverage vs Time">
    Target suite that completes in 2-4 hours maximum
  </Step>
</Steps>

## Regression Testing Strategy

<Tabs>
  <Tab title="Full Regression">
    ### Complete Test Suite

    Run all regression tests before major releases.

    **When to use:**

    * Major version releases
    * Quarterly releases
    * After significant architecture changes

    **Characteristics:**

    * 100+ tests
    * 2-4 hours execution time
    * All features covered
    * All priority levels (P0-P3)

    <Warning>
      Full regression is time-consuming. Reserve for major releases only.
    </Warning>
  </Tab>

  <Tab title="Selective Regression">
    ### Risk-Based Testing

    Test only areas affected by recent changes.

    **When to use:**

    * Sprint releases
    * Minor version updates
    * Targeted hotfixes

    **Strategy:**

    ```oql theme={null}
    # Tests in affected components
    component IN (authentication, checkout) AND
    tags CONTAINS "regression" AND
    status = active
    ```

    **Benefits:**

    * Faster execution (30-60 minutes)
    * Focused on risk areas
    * More frequent testing possible
  </Tab>

  <Tab title="Automated Regression">
    ### Continuous Regression

    Automated tests run on every commit or nightly.

    **Setup:**

    * Automate all P0/P1 tests
    * Run on CI/CD pipeline
    * Integrate with version control
    * Alert team on failures

    **Benefits:**

    * Catch regressions early
    * Fast feedback loop
    * No manual effort required
    * Consistent execution
  </Tab>
</Tabs>

## Running Regression Tests

<Steps>
  <Step title="Select Test Suite">
    Choose appropriate regression level:

    ```oql theme={null}
    # Full regression
    tags CONTAINS "regression" AND status = active
    ORDER BY priority ASC

    # Selective regression (e.g., auth module)
    tags CONTAINS "regression" AND
    component = "authentication" AND
    status = active
    ```
  </Step>

  <Step title="Create Test Run">
    Configure the test run:

    * **Name**: `Regression - v2.1.0 Release`
    * **Environment**: `Staging`
    * **Build**: `2.1.0-rc1`
    * **Assigned to**: Distribute among team
  </Step>

  <Step title="Execute Tests">
    Team executes assigned tests in parallel
  </Step>

  <Step title="Track Progress">
    Monitor run dashboard for:

    * Completion percentage
    * Pass/fail rate
    * Blockers
    * Failed tests needing triage
  </Step>

  <Step title="Triage Failures">
    For each failure:

    * Is it a real bug? Create defect.
    * Is it a test issue? Fix the test.
    * Is it environmental? Investigate environment.
  </Step>

  <Step title="Release Decision">
    Decide go/no-go based on results:

    * All P0 tests passed? ✅ Can release
    * Any P0 failures? ❌ Block release
    * P1/P2 failures? Assess risk
  </Step>
</Steps>

## Example Regression Suites

<AccordionGroup>
  <Accordion title="Web Application Regression" icon="window">
    **Scope:** Full website functionality

    **Categories:**

    * Authentication (10 tests)
    * Navigation (15 tests)
    * User Profile (12 tests)
    * Search (8 tests)
    * Content Management (20 tests)
    * Forms & Validation (18 tests)
    * Notifications (7 tests)
    * Settings (10 tests)

    **Total:** \~100 tests
    **Time:** \~3 hours
    **Tags:** `regression`, `web`
  </Accordion>

  <Accordion title="API Regression" icon="code">
    **Scope:** All API endpoints

    **Categories:**

    * Authentication endpoints (5 tests)
    * User CRUD operations (12 tests)
    * Product endpoints (15 tests)
    * Order processing (10 tests)
    * Search & filtering (8 tests)
    * File uploads (6 tests)
    * Webhooks (5 tests)

    **Total:** \~60 tests
    **Time:** \~45 minutes (automated)
    **Tags:** `regression`, `api`, `automated`
  </Accordion>

  <Accordion title="Mobile App Regression" icon="mobile">
    **Scope:** iOS & Android apps

    **Categories (per platform):**

    * App launch & onboarding (5 tests)
    * Login & authentication (8 tests)
    * Main navigation (10 tests)
    * Core features (25 tests)
    * Settings & preferences (7 tests)
    * Offline functionality (10 tests)
    * Push notifications (5 tests)

    **Total:** \~70 tests per platform
    **Time:** \~2 hours per platform
    **Tags:** `regression`, `mobile`, `ios`/`android`
  </Accordion>
</AccordionGroup>

## Optimizing Regression Testing

<CardGroup cols={2}>
  <Card title="Prioritize by Risk" icon="exclamation-triangle">
    Test high-risk, frequently-changed areas first
  </Card>

  <Card title="Automate Stable Tests" icon="robot">
    Move stable, repetitive tests to automation
  </Card>

  <Card title="Parallelize Execution" icon="arrows-split-up-and-left">
    Distribute tests across team members
  </Card>

  <Card title="Remove Obsolete Tests" icon="trash">
    Archive tests for deprecated features
  </Card>

  <Card title="Maintain Test Quality" icon="wrench">
    Fix flaky tests immediately
  </Card>

  <Card title="Track Trends" icon="chart-line">
    Monitor pass rates and execution times
  </Card>
</CardGroup>

## Regression Test Maintenance

<AccordionGroup>
  <Accordion title="Adding New Tests" icon="plus">
    When to add tests to regression suite:

    * New feature released
    * Bug found in production
    * Area lacking coverage
    * High-value user workflow

    **Process:**

    1. Create test case
    2. Execute to validate it works
    3. Tag with `regression`
    4. Add to appropriate folder
  </Accordion>

  <Accordion title="Removing Tests" icon="minus">
    When to remove tests from regression suite:

    * Feature deprecated/removed
    * Test is consistently flaky
    * Test is redundant with other tests
    * Feature changed significantly

    **Process:**

    1. Change status to `archived` (don't delete)
    2. Remove `regression` tag
    3. Document why it was removed
  </Accordion>

  <Accordion title="Updating Tests" icon="pen">
    Keep tests current with product changes:

    * Review test suite quarterly
    * Update after major feature changes
    * Fix broken tests immediately
    * Refine test steps for clarity
    * Update expected results

    <Tip>
      Assign test ownership to feature teams for ongoing maintenance
    </Tip>
  </Accordion>
</AccordionGroup>

## Integration with Release Process

```mermaid theme={null}
graph LR
    A[Code Complete] --> B[Smoke Tests]
    B --> C{Pass?}
    C -->|No| D[Fix & Retry]
    D --> B
    C -->|Yes| E[Regression Tests]
    E --> F{Pass?}
    F -->|No| G[Triage Failures]
    G --> H{Blocking?}
    H -->|Yes| D
    H -->|No| I[Accept Risk]
    I --> J[Release]
    F -->|Yes| J
```

## What's Next?

<CardGroup cols={2}>
  <Card title="Smoke Tests" icon="fire" href="/workflows/smoke-tests">
    Quick verification tests
  </Card>

  <Card title="Organizing Tests" icon="folder-tree" href="/workflows/organizing-tests">
    Structure your test suite
  </Card>

  <Card title="Team Collaboration" icon="users" href="/workflows/team-collaboration">
    Work together on testing
  </Card>

  <Card title="Best Practices" icon="star" href="/resources/best-practices">
    Testing best practices
  </Card>
</CardGroup>