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43 lines
1.9 KiB
Plaintext
Executable File
43 lines
1.9 KiB
Plaintext
Executable File
# Playwright E2E Test Timeout Fix - Feature Flags Endpoint
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## 1. Introduction
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### Overview
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This plan addresses systematic timeout failures in Playwright E2E tests for the feature flags endpoint (`/feature-flags`) occurring consistently in CI environments. The tests in `tests/settings/system-settings.spec.ts` are failing due to timeouts when waiting for API responses during feature toggle operations.
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### Problem Statement
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Four tests are timing out in CI:
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1. `should toggle Cerberus security feature`
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2. `should toggle CrowdSec console enrollment`
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3. `should toggle uptime monitoring`
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4. `should persist feature toggle changes`
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All tests follow the same pattern:
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- Click toggle → Wait for PUT `/feature-flags` (currently 15s timeout)
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- Wait for subsequent GET `/feature-flags` (currently 10s timeout)
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- Both operations frequently exceed their timeouts in CI
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### Root Cause Analysis
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Based on comprehensive research, the timeout failures are caused by:
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1. **Backend N+1 Query Pattern** (PRIMARY)
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- `GetFlags()` makes 3 separate SQLite queries (one per feature flag)
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- `UpdateFlags()` makes additional individual queries per flag
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- Each toggle operation requires: 3 queries (PUT) + 3 queries (GET) = 6 DB operations minimum
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2. **CI Environment Characteristics**
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- Slower disk I/O compared to local development
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- SQLite on CI runners lacks shared memory optimizations
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- No database query caching layer
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- Sequential query execution compounds latency
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3. **Test Pattern Amplification**
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- Tests explicitly set lower timeouts (15s, 10s) than helper defaults (30s)
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- Immediate GET after PUT doesn't allow for state propagation
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- No retry logic for transient failures
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### Objectives
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1. **Immediate**: Increase timeouts and add strategic waits to fix CI failures
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2. **Short-term**: Improve test reliability with better wait strategies
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3. **Long-term**: Document backend performance optimization opportunities
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