ADR-029: CODITECT Server Hub - Part 3 (Testing)

Document Specification Block

Document: ADR-029-v4-coditect-server-hub-part3-testing
Version: 1.0.0
Purpose: Comprehensive testing strategy for CODITECT Server Hub
Audience: QA Engineers, Test Engineers, DevOps
Date Created: 2025-09-28
Date Modified: 2025-09-28
Date Released: 2025-09-28
Status: DRAFT
QA Reviewed: PENDING

Table of Contents

• Test Philosophy
• Coverage Requirements
• Test Categories
• Critical Path Tests
• Performance Tests
• Chaos Engineering
• Test Execution Strategy
• Approval Signatures

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---

Test Philosophy

The CODITECT Server Hub is mission-critical infrastructure requiring 100% test coverage. Our testing philosophy:

1. Zero Tolerance: No untested code paths in production
2. Fail Fast: Early detection through comprehensive CI/CD
3. Real-World Simulation: Tests mirror production conditions
4. Chaos by Design: Proactive failure testing

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---

Coverage Requirements

Mandatory Coverage Levels

Component	Unit Tests	Integration	E2E	Total
Log Ingestion	100%	100%	100%	100%
Authentication	100%	100%	100%	100%
WebSocket Service	100%	100%	100%	100%
RBAC	100%	100%	100%	100%
Storage Layer	100%	100%	100%	100%

Coverage Enforcement

# .github/workflows/test.yml
name: Test Coverage
on: [push, pull_request]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Run tests with coverage
        run: |
          cargo tarpaulin --out Xml --all-features
      - name: Check coverage
        run: |
          coverage=$(cargo tarpaulin --print-summary | grep "Coverage" | awk '{print $2}' | sed 's/%//')
          if (( $(echo "$coverage < 100" | bc -l) )); then
            echo "Coverage $coverage% is below 100%"
            exit 1
          fi

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---

Test Categories

1. Unit Tests

#[cfg(test)]
mod log_ingestion_tests {
    use super::*;
    
    #[test]
    fn test_log_entry_validation() {
        let invalid_entry = LogEntry {
            timestamp: Utc::now() + Duration::hours(1), // Future timestamp
            level: "INVALID".to_string(),
            component: "".to_string(), // Empty component
            message: "a".repeat(10001), // Exceeds max length
            metadata: None,
        };
        
        assert!(validate_log_entry(&invalid_entry).is_err());
    }
    
    #[test]
    fn test_tenant_key_generation() {
        let key = build_tenant_key("tenant123", "logs/2025/09/28");
        assert_eq!(key, "/tenant/tenant123/logs/2025/09/28");
        
        // Test key escaping
        let key2 = build_tenant_key("tenant/123", "logs");
        assert_eq!(key2, "/tenant/tenant%2F123/logs");
    }
}

2. Integration Tests

#[tokio::test]
async fn test_full_log_pipeline() {
    let test_env = TestEnvironment::new().await;
    
    // Create test user
    let user = test_env.create_user("test_user", "test_tenant").await;
    
    // Submit logs
    let batch = LogBatch {
        entries: generate_test_logs(100),
        workspace_id: "test_workspace".to_string(),
        client_version: "1.0.0".to_string(),
    };
    
    let response = test_env
        .authenticated_request(&user)
        .post("/api/logs/batch")
        .json(&batch)
        .send()
        .await
        .unwrap();
    
    assert_eq!(response.status(), 202);
    
    // Verify storage
    let stored_logs = test_env.query_logs(&user, "test_workspace").await;
    assert_eq!(stored_logs.len(), 100);
    
    // Verify WebSocket broadcast
    let mut ws = test_env.connect_websocket(&user).await;
    let msg = ws.recv().await.unwrap();
    assert!(msg.contains("test_workspace"));
}

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---

Critical Path Tests

Authentication Flow - 100% Coverage

#[tokio::test]
async fn test_jwt_validation_all_paths() {
    // Valid token
    let valid_token = generate_jwt("user1", "tenant1", Duration::hours(1));
    assert!(validate_jwt(&valid_token).await.is_ok());
    
    // Expired token
    let expired_token = generate_jwt("user1", "tenant1", Duration::hours(-1));
    assert_matches!(validate_jwt(&expired_token).await, Err(ApiError::Unauthorized));
    
    // Invalid signature
    let mut invalid_token = valid_token.clone();
    invalid_token.push_str("tampered");
    assert_matches!(validate_jwt(&invalid_token).await, Err(ApiError::Unauthorized));
    
    // Missing claims
    let no_tenant_token = generate_jwt_without_tenant("user1");
    assert_matches!(validate_jwt(&no_tenant_token).await, Err(ApiError::BadRequest(_)));
}

Dual Write Reliability - 100% Coverage

#[tokio::test]
async fn test_dual_write_all_scenarios() {
    let scenarios = vec![
        (true, true, "dual"),           // Both succeed
        (true, false, "local_only"),    // FDB fails
        (false, true, "cloud_only"),    // Local fails
    ];
    
    for (local_ok, fdb_ok, expected_storage) in scenarios {
        let state = create_test_state();
        state.local_db.set_success(local_ok);
        state.fdb.set_success(fdb_ok);
        
        let result = ingest_batch(/* params */).await;
        
        if local_ok || fdb_ok {
            assert!(result.is_ok());
            assert_eq!(result.unwrap().storage, expected_storage);
        } else {
            assert!(result.is_err());
        }
    }
}

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---

Performance Tests

Load Testing

#[tokio::test]
async fn test_load_1m_logs_per_minute() {
    let test_env = TestEnvironment::new().await;
    let start = Instant::now();
    
    // Launch 1000 concurrent clients
    let mut handles = vec![];
    for i in 0..1000 {
        let env = test_env.clone();
        handles.push(tokio::spawn(async move {
            let user = env.create_user(&format!("user_{}", i), "load_test").await;
            
            // Each client sends 1000 logs
            for batch_num in 0..10 {
                let batch = LogBatch {
                    entries: generate_test_logs(100),
                    workspace_id: "load_test".to_string(),
                    client_version: "1.0.0".to_string(),
                };
                
                let response = env
                    .authenticated_request(&user)
                    .post("/api/logs/batch")
                    .json(&batch)
                    .send()
                    .await;
                
                assert!(response.is_ok());
            }
        }));
    }
    
    futures::future::join_all(handles).await;
    
    let duration = start.elapsed();
    assert!(duration.as_secs() < 60, "Failed to process 1M logs in 1 minute");
    
    // Verify all logs stored
    let count = test_env.count_logs("load_test").await;
    assert_eq!(count, 1_000_000);
}

Latency Testing

#[tokio::test]
async fn test_p99_latency_under_100ms() {
    let mut latencies = vec![];
    
    for _ in 0..10000 {
        let start = Instant::now();
        let response = submit_single_log().await;
        let latency = start.elapsed();
        
        assert!(response.is_ok());
        latencies.push(latency.as_millis());
    }
    
    latencies.sort();
    let p99_index = (latencies.len() as f64 * 0.99) as usize;
    let p99_latency = latencies[p99_index];
    
    assert!(p99_latency < 100, "P99 latency {}ms exceeds 100ms", p99_latency);
}

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---

Chaos Engineering

Network Partition Testing

#[tokio::test]
async fn test_network_partition_recovery() {
    let chaos = ChaosMonkey::new();
    let test_env = TestEnvironment::new().await;
    
    // Start normal operations
    let client_handle = tokio::spawn(async move {
        continuous_log_submission(&test_env).await
    });
    
    // Simulate network partition
    chaos.partition_network("fdb", Duration::from_secs(30)).await;
    
    // Verify system continues with local storage
    tokio::time::sleep(Duration::from_secs(10)).await;
    let status = test_env.health_check().await;
    assert_eq!(status.status, "degraded");
    assert_eq!(status.components["fdb"], false);
    assert_eq!(status.components["local_db"], true);
    
    // Wait for partition to heal
    tokio::time::sleep(Duration::from_secs(25)).await;
    
    // Verify recovery and sync
    let status2 = test_env.health_check().await;
    assert_eq!(status2.status, "healthy");
    
    // Verify no data loss
    client_handle.abort();
    let logs_count = test_env.count_all_logs().await;
    assert!(logs_count > 0);
}

Resource Exhaustion

#[tokio::test]
async fn test_memory_pressure_handling() {
    let test_env = TestEnvironment::new().await;
    let chaos = ChaosMonkey::new();
    
    // Limit memory to 512MB
    chaos.limit_memory(512 * 1024 * 1024).await;
    
    // Try to submit large batches
    for _ in 0..100 {
        let large_batch = LogBatch {
            entries: generate_large_logs(1000), // 1MB per log
            workspace_id: "memory_test".to_string(),
            client_version: "1.0.0".to_string(),
        };
        
        let response = test_env
            .authenticated_request(&test_user)
            .post("/api/logs/batch")
            .json(&large_batch)
            .send()
            .await;
        
        // Should handle gracefully
        assert!(response.is_ok() || 
                matches!(response.status(), StatusCode::SERVICE_UNAVAILABLE));
    }
    
    // System should recover
    chaos.restore_memory().await;
    let health = test_env.health_check().await;
    assert_eq!(health.status, "healthy");
}

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---

Test Execution Strategy

CI/CD Pipeline

# .github/workflows/comprehensive-test.yml
name: Comprehensive Testing

on:
  push:
    branches: [main, develop]
  pull_request:

jobs:
  unit-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - run: cargo test --lib

  integration-tests:
    runs-on: ubuntu-latest
    services:
      foundationdb:
        image: foundationdb/foundationdb:7.1
    steps:
      - uses: actions/checkout@v3
      - run: cargo test --test '*' -- --test-threads=1

  performance-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - run: cargo bench
      - run: ./scripts/load-test.sh

  chaos-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - run: ./scripts/chaos-suite.sh

  security-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - run: cargo audit
      - run: ./scripts/penetration-test.sh

Test Data Management

// src/test_utils/data_generator.rs
pub struct TestDataGenerator {
    rng: StdRng,
}

impl TestDataGenerator {
    pub fn generate_realistic_logs(&mut self, count: usize) -> Vec<LogEntry> {
        (0..count).map(|_| {
            LogEntry {
                timestamp: Utc::now() - Duration::seconds(self.rng.gen_range(0..3600)),
                level: self.random_level(),
                component: self.random_component(),
                message: self.random_message(),
                metadata: self.random_metadata(),
            }
        }).collect()
    }
}

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---

Approval Signatures

QA Approval

QA Lead: ___________________________ Date: _______________

Test Automation Engineer: ___________________________ Date: _______________

Technical Approval

Lead Engineer: ___________________________ Date: _______________

DevOps Lead: ___________________________ Date: _______________

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