Add unit tests and CI/CD workflow

[ziemniak04]

User description

• Add Jest/React Testing Library setup
• Add tests for:
  • Redux auth slice (login, logout, state transitions)
  • Redux store configuration
  • Firebase authentication (sign in, sign up, sign out)
  • Firestore operations (doc, setDoc, getDoc)
  • Firebase configuration validation
  • Button component
  • Input component
• Add Firebase mocks for testing
• Add GitHub Actions workflow to run tests on PRs
• Workflow blocks merge if tests don't pass 90% threshold
• Add test:ci script for CI environments

Total: 83 tests across 7 test suites

---

PR Type

Tests, Enhancement

---

Description

• Add comprehensive Jest/React Testing Library test suite with 83 tests

• Create Firebase mocks for authentication and Firestore operations

• Implement GitHub Actions CI/CD workflow with 90% pass rate quality gate

• Add test configuration and environment setup for CI environments

---

Diagram Walkthrough

flowchart LR
  A["Test Setup"] --> B["Firebase Mocks"]
  A --> C["Component Tests"]
  A --> D["Redux Tests"]
  A --> E["Firebase Tests"]
  B --> F["Auth Functions"]
  B --> G["Firestore Operations"]
  C --> H["Button & Input"]
  D --> I["Auth Slice & Store"]
  E --> J["Auth & Config Tests"]
  F --> K["GitHub Actions"]
  G --> K
  H --> K
  I --> K
  J --> K
  K --> L["Quality Gate 90%"]
  L --> M["Block Merge if Failed"]

Loading

File Walkthrough

	Relevant files
Tests	8 files firebase.js Firebase authentication and Firestore operation mocks        +96/-0    Button.test.js Button component unit tests with variants                                +56/-0    Input.test.js Input component unit tests with types                                        +70/-0    auth.test.js Firebase authentication functions test suite                          +180/-0  firebaseConfig.test.js Firebase configuration and environment validation                +121/-0  firestore.test.js Firestore document operations test suite                                  +161/-0  authSlice.test.js Redux auth slice reducer and selectors tests                          +151/-0  store.test.js Redux store configuration and integration tests                    +90/-0
Configuration changes	3 files setupTests.js Jest test environment setup and global mocks                          +41/-0    .env.test Test environment variables for Firebase config                      +10/-0    test.yml GitHub Actions CI/CD workflow with quality gates                  +152/-0
Dependencies	1 files package.json Add test dependencies and test:ci script                                  +17/-0

---