Add Unit Tests for Domain Layer

[peter7775]

Add Unit Tests for Domain Layer

Description

Test coverage in the domain layer to ensure business logic reliability.

Testing Requirements

Domain Entities

• Test entity creation and validation
• Test entity methods and business rules
• Edge cases and error conditions

Domain Models

• Test transformation rules parsing
• Test configuration validation
• Test data mapping logic

Domain Aggregates

• Test aggregate root behavior
• Test business rule enforcement
• Test domain events

Value Objects

• Test immutability
• Test validation rules
• Test equality and comparison

Files Needing Tests

Priority 1: Core Entities and Models

internal/domain/
├── entities/
│   ├── base_entity.go (needs tests)
│   ├── graph.go (needs tests)
│   ├── node.go (needs tests)
│   └── relation.go (needs tests)
└── models/
    ├── config.go (needs tests)
    ├── database_config.go (needs tests)
    ├── database_schema.go (needs tests)
    ├── graph.go (needs tests)
    └── search.go (needs tests)

Priority 2: Aggregates and Services

internal/domain/
├── aggregates/
│   ├── graph/graph_aggregate.go (needs tests)
│   ├── serialization/id_generator.go (needs tests)
│   ├── serialization/serialization.go (needs tests)
│   └── transform/transform_rule_aggregate.go (needs tests)
└── services/
    └── graph_service.go (needs tests)

Priority 3: Value Objects and Events

internal/domain/
├── valueobjects/
│   ├── search_criteria.go (needs tests)
│   ├── transform_config.go (needs tests)
│   ├── visualization_criteria.go (needs tests)
│   └── transform/
│       ├── direction.go (needs tests)
│       ├── rule_parameters.go (needs tests)
│       └── rule_type.go (needs tests)
└── events/
    ├── domain_event.go (needs tests)
    └── node_events.go (needs tests)

Acceptance Criteria

• Create test files for all domain entities (Priority 1)
• Create test files for all domain models (Priority 1)
• Create test files for domain aggregates (Priority 2)
• Create test files for domain services (Priority 2)
• Create test files for value objects (Priority 3)
• Create test files for domain events (Priority 3)
• Test all public methods and functions
• Include edge cases and error scenarios
• Achieve minimum 80% test coverage for domain layer
• All tests pass in CI pipeline
• Add table-driven tests where appropriate
• Follow DDD testing patterns (test behavior, not implementation)

Technical Requirements

• Use testify framework (already included in project)
• Follow existing test patterns from other layers
• Use mocks for external dependencies
• Write descriptive test names following Go conventions
• Test files should be named *_test.go in same package
• Use test doubles for repositories and external services
• Focus on testing business rules and domain logic

Commands for Development

# Run domain layer tests specifically
go test ./internal/domain/...

# Run with coverage
go test -cover ./internal/domain/...

# Run specific entity tests
go test ./internal/domain/entities/...
go test ./internal/domain/models/...

# Generate coverage report
make test

Dependencies

• No external dependencies required
• Can be developed incrementally
• Should be completed before adding integration tests

Definition of Done

• All domain layer files have corresponding test files
• Test coverage reports show >80% for domain package
• All tests pass locally and in CI
• Code review completed

[6ximik9]

Hi @peter7775, can I help you with this task?

[peter7775]

Hi, @6ximik9 ... Thank you so much for cooperation.

[6ximik9]

But I don't see the necessary files for testing in the main branch.

[peter7775]

I will check it and fix tommorow - and I will let you know.

[6ximik9]

Okay, thank you.

[peter7775]

Hi @6ximik9 . I have added new description. Thank you for cooperation !