Test Environment Management

<default_to_action> When managing test environments:

1. DEFINE environment types (local, CI, staging, prod)
2. CONTAINERIZE with Docker for consistency
3. ENSURE parity with production (same versions, configs)
4. MOCK external services (service virtualization)
5. OPTIMIZE costs (auto-shutdown, spot instances)

Quick Environment Checklist:

• Same OS/versions as production
• Same database type and version
• Same configuration structure
• Containers for reproducibility
• Auto-shutdown after hours

Critical Success Factors:

• "Works on my machine" = environment inconsistency
• Infrastructure as Code = repeatable environments
• Service virtualization = test without external dependencies </default_to_action>

Quick Reference Card

When to Use

• Setting up test infrastructure
• Debugging environment-specific failures
• Reducing test infrastructure costs
• Ensuring dev/prod parity

Environment Types

Type	Purpose	Lifetime
Local	Fast feedback	Developer session
CI	Automated tests	Per build (ephemeral)
Staging	Pre-prod validation	Persistent
Production	Canary/synthetic	Continuous

Dev/Prod Parity Checklist

Item	Must Match
OS	Same version
Database	Same type + version
Dependencies	Same versions
Config	Same structure
Env vars	Same names

---

Docker for Test Environments

# docker-compose.test.yml
version: '3.8'

services:
  app:
    build: .
    ports:
      - "3000:3000"
    environment:
      NODE_ENV: test
      DATABASE_URL: postgres://postgres:password@db:5432/test
    depends_on:
      - db
      - redis

  db:
    image: postgres:15
    environment:
      POSTGRES_DB: test
      POSTGRES_PASSWORD: password

  redis:
    image: redis:7

Run tests in container:

docker-compose -f docker-compose.test.yml up -d
docker-compose -f docker-compose.test.yml exec app npm test
docker-compose -f docker-compose.test.yml down

---

Infrastructure as Code

# test-environment.tf
resource "aws_instance" "test_server" {
  ami           = "ami-0c55b159cbfafe1f0"
  instance_type = "t3.medium"

  tags = {
    Name         = "test-environment"
    Environment  = "test"
    AutoShutdown = "20:00" # Cost optimization
  }
}

resource "aws_rds_instance" "test_db" {
  engine                  = "postgres"
  engine_version          = "15"
  instance_class          = "db.t3.micro"
  backup_retention_period = 0 # No backups needed for test
  skip_final_snapshot     = true
}

---

Service Virtualization

// Mock external services with WireMock
import { WireMock } from 'wiremock-captain';

const wiremock = new WireMock('http://localhost:8080');

// Mock payment gateway
await wiremock.register({
  request: {
    method: 'POST',
    url: '/charge'
  },
  response: {
    status: 200,
    jsonBody: { transactionId: '12345', status: 'approved' }
  }
});

// Tests use mock instead of real gateway

---

Cost Optimization

# Auto-shutdown test environments after hours
0 20 * * * aws ec2 stop-instances --instance-ids $(aws ec2 describe-instances \
  --filters "Name=tag:Environment,Values=test" \
  --query "Reservations[].Instances[].InstanceId" --output text)

# Start before work hours
0 7 * * 1-5 aws ec2 start-instances --instance-ids $(aws ec2 describe-instances \
  --filters "Name=tag:Environment,Values=test" \
  --query "Reservations[].Instances[].InstanceId" --output text)

Use spot instances (70% savings):

resource "aws_instance" "test_runner" {
  instance_type = "c5.2xlarge"
  instance_market_options {
    market_type = "spot"
    spot_options {
      max_price = "0.10"
    }
  }
}

---

Agent-Driven Environment Management

// Provision test environment
await Task("Environment Provisioning", {
  type: 'integration-testing',
  services: ['app', 'db', 'redis', 'mocks'],
  parity: 'production',
  lifetime: '2h'
}, "qe-test-executor");

// Chaos testing in isolated environment
await Task("Chaos Test Environment", {
  baseline: 'staging',
  isolate: true,
  injectFaults: ['network-delay', 'pod-failure']
}, "qe-chaos-engineer");

---

Agent Coordination Hints

Memory Namespace

aqe/environment-management/
├── configs/*            - Environment configurations
├── parity-checks/*      - Dev/prod parity results
├── cost-reports/*       - Infrastructure costs
└── service-mocks/*      - Service virtualization configs

Fleet Coordination

const envFleet = await FleetManager.coordinate({
  strategy: 'environment-management',
  agents: [
    'qe-test-executor',       // Provision environments
    'qe-performance-tester',  // Environment performance
    'qe-chaos-engineer'       // Resilience testing
  ],
  topology: 'sequential'
});

---

Related Skills

• test-data-management - Data for environments
• continuous-testing-shift-left - CI/CD environments
• chaos-engineering-resilience - Environment resilience

---

Remember

Environment inconsistency = flaky tests. "Works on my machine" problems come from: different OS/versions, missing dependencies, configuration differences, data differences.

Infrastructure as Code ensures repeatability. Version control your environment configurations. Spin up identical environments on demand.

With Agents: Agents automatically provision test environments matching production, ensure parity, mock external services, and optimize costs with auto-scaling and auto-shutdown.