9.4Environment Variables

Environment variables parameterize test runs across environments.

#!/bin/bash
set -euo pipefail

# Default values with fallback
BASE_URL="${API_BASE_URL:-http://localhost:3000}"
DB_HOST="${TEST_DB_HOST:-localhost}"
WORKERS="${TEST_WORKERS:-4}"

echo "Running tests against: $BASE_URL"
echo "Database: $DB_HOST"
echo "Workers: $WORKERS"

API_BASE_URL="$BASE_URL" pytest tests/ -n "$WORKERS"

# Run against different environments
API_BASE_URL=https://staging.example.com ./run_tests.sh
API_BASE_URL=https://production.example.com TEST_WORKERS=1 ./run_tests.sh