Feature/44 docker setup

[nmokaria27]

Here is the updated PR description with the new commands and configuration changes included.

Docker Setup and Test Database #49

Closes #49

Overview

This PR implements a comprehensive Docker-based test database setup to enable isolated testing for the volunteer management backend. The implementation provides a complete testing environment that runs independently from the production database, ensuring test isolation and repeatability.

Key Changes:

• Created Docker container configuration for PostgreSQL test database

• Implemented complete database schema with 6 enums and 15 tables

• Added test environment configuration and application integration

• Implemented strict environment variable enforcement to prevent accidental production connections

• Created comprehensive testing scripts with 77 automated tests

• Established repeatable test cycles for CI/CD integration

Testing

Automated Testing:

• Created verify-test-db-setup.sh with 77 comprehensive tests across 14 phases

• Tests cover file structure, SQL schema validation, Docker operations, database connectivity, data isolation, and full lifecycle management

• All tests pass with 100% success rate

Manual Testing:

• Verified complete test cycle: docker compose up -d → npm run test:docker → docker compose down -v 

• Tested manual reseeding with npm run seed:test 

• Validated data isolation between test runs

• Confirmed schema recreation after container restart

• Verified Supabase/Production data remains untouched during test execution

Test Coverage:

• File existence and configuration validation

• SQL schema integrity (6 enums, 15 tables, foreign keys)

• Docker container lifecycle management

• Database connectivity and operations

• Application integration with test environment

• Port configuration and network accessibility

Screenshots / Screencasts

Run ./verify-test-db-setup.sh --full to test the docker & seed.sql related tests.

Test Script Execution:

$ ./verify-test-db-setup.sh --full

========================================

  FULL DATABASE ROBUSTNESS TEST

  (80+ tests across 14 phases)

========================================

Total Tests Run:  77

Tests Passed:     77

Tests Failed:     0

Success Rate:     100%

✅ All checks passed!

Database Schema Validation:

$ docker compose exec test-db psql -U postgres -d test_db -c "\dt"

                    List of relations

 Schema |            Name             | Type  |  Owner   

--------+----------------------------+-------+----------

 public | chapters                   | table | postgres

 public | companies                  | table | postgres

 public | contacts                   | table | postgres

 public | locations                  | table | postgres

 public | nonprofit_chapter_project | table | postgres

 public | nonprofits                 | table | postgres

 public | operations_branches        | table | postgres

 public | projects                   | table | postgres

 public | roles                      | table | postgres

 public | sponsor_chapter            | table | postgres

 public | sponsors                   | table | postgres

 public | volunteer_assignment       | table | postgres

 public | volunteer_history          | table | postgres

 public | volunteer_role_project     | table | postgres

 public | volunteers                 | table | postgres

(15 rows)

Checklist

• Code is neat, readable, and works
• Code is commented where appropriate and well-documented
• Commit messages follow our guidelines
• Issue number is linked
• Branch is linked
• Reviewers are assigned (one of your tech leads)

Notes

Files Created:

1. docker-compose.yml - Docker container configuration

   - PostgreSQL 16 Alpine image

   - Port mapping (5433:5432) to avoid conflicts

   - Volume mounting for auto-seeding

   - Health checks and networking

2. db-init/seed.sql - Complete database schema (258 lines)

   - 6 enum types (action_type, level_type, status_type, volunteer_status, volunteer_type, project_type)

   - 15 tables in correct dependency order

   - All foreign key constraints and unique constraints

   - Idempotent reseeding (DROP/CREATE schema)

3. .env.test - Test environment configuration

   - DATABASE_URL pointing to localhost:5433

   - NODE_ENV=test

   - Server port configurations

4. verify-test-db-setup.sh - Comprehensive testing script (393 lines)
   - Quick mode (7 tests, 1 second)
   - Full mode (77 tests, 60 seconds)
   - 14 test phases covering all aspects
   - Color-coded output and detailed reporting
Files Modified:

1. src/config/server.ts - Application configuration

   - Added conditional loading of .env.test when NODE_ENV=test

   - Added override: true to forcibly prioritize test variables over shell environment variables

2. package.json - NPM scripts

   - Added seed:test script for manual database reseeding

   - Added test:docker script to explicitly run tests against local container

   - Command: docker compose exec -T test-db psql -U postgres -d test_db -f /docker-entrypoint-initdb.d/seed.sql

How to Use:

Basic Workflow:

# Start test database

docker compose up -d

# Wait for initialization (5-10 seconds)

sleep 10

# Run application tests (Uses test:docker to ensure isolation)

npm run test:docker

# Clean up

docker compose down -v

Verification:

# Quick check (1 second)

./verify-test-db-setup.sh

# Comprehensive testing (60 seconds)

./verify-test-db-setup.sh --full

Manual Reseeding:

# Reseed database without restarting container

npm run seed:test

Complete Test Cycle:

# Full cycle test

docker compose down -v

docker compose up -d

sleep 10

npm run test:docker

Key Benefits:

• ✅ Complete test isolation from production database
• ✅ Repeatable test environment setup
• ✅ Automated schema validation
• ✅ CI/CD ready with comprehensive testing
• ✅ Manual reseeding capability
• ✅ Full lifecycle management
• ✅ 100% test coverage validation

Technical Details:

• Database runs on port 5433 to avoid conflicts
• Uses PostgreSQL 16 Alpine for lightweight container
• Schema includes all production tables and relationships
• Idempotent seeding allows multiple runs without errors
• Health checks ensure database readiness
• Volume persistence for data between container restarts

[soramicha]

I know in the issue description I used npm run test, but npm run test would actually run the tests that connect to Supabase, and so currently even with docker container running, the supabase itself is getting changed. Can we create a new test command that would specifically run the tests but make sure it uses the local test database rather than the Supabase database itself? Basically right now, it doesn't seem to be using .env.test information

[soramicha]

I deleted all data in current database in supabase so you can easily check if any data is getting created in there when it shouldn't anymore

[soramicha]

I changed my .env NODE_ENV to test, but when I run npm run test:local, the database in Supabase itself is changed! Also please update the PR itself if there are any changes in commands, instructions, etc.