import { RecordEngagementOutputDTO } from './RecordEngagementOutputDTO';

describe('RecordEngagementOutputDTO', () => {
  describe('TDD - Test First', () => {
    it('should create valid DTO with all fields', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123';
      dto.engagementWeight = 10;

      // Assert
      expect(dto.eventId).toBe('event-123');
      expect(dto.engagementWeight).toBe(10);
    });

    it('should handle zero engagement weight', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123';
      dto.engagementWeight = 0;

      // Assert
      expect(dto.engagementWeight).toBe(0);
    });

    it('should handle single digit engagement weight', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123';
      dto.engagementWeight = 1;

      // Assert
      expect(dto.engagementWeight).toBe(1);
    });

    it('should handle large engagement weight', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123';
      dto.engagementWeight = 1000;

      // Assert
      expect(dto.engagementWeight).toBe(1000);
    });

    it('should handle very large engagement weight', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123';
      dto.engagementWeight = 999999;

      // Assert
      expect(dto.engagementWeight).toBe(999999);
    });

    it('should handle negative engagement weight', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123';
      dto.engagementWeight = -10;

      // Assert
      expect(dto.engagementWeight).toBe(-10);
    });

    it('should handle decimal engagement weight', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123';
      dto.engagementWeight = 10.5;

      // Assert
      expect(dto.engagementWeight).toBe(10.5);
    });

    it('should handle very small decimal engagement weight', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123';
      dto.engagementWeight = 0.001;

      // Assert
      expect(dto.engagementWeight).toBe(0.001);
    });

    it('should handle scientific notation for engagement weight', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123';
      dto.engagementWeight = 1e3;

      // Assert
      expect(dto.engagementWeight).toBe(1000);
    });

    it('should handle UUID format for event ID', () => {
      // Arrange
      const uuid = '550e8400-e29b-41d4-a716-446655440000';

      // Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = uuid;
      dto.engagementWeight = 10;

      // Assert
      expect(dto.eventId).toBe(uuid);
    });

    it('should handle numeric event ID', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = '123456';
      dto.engagementWeight = 10;

      // Assert
      expect(dto.eventId).toBe('123456');
    });

    it('should handle special characters in event ID', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123-test-456';
      dto.engagementWeight = 10;

      // Assert
      expect(dto.eventId).toBe('event-123-test-456');
    });

    it('should handle very long event ID', () => {
      // Arrange
      const longId = 'e'.repeat(100);

      // Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = longId;
      dto.engagementWeight = 10;

      // Assert
      expect(dto.eventId).toBe(longId);
    });

    it('should handle maximum safe integer for engagement weight', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123';
      dto.engagementWeight = Number.MAX_SAFE_INTEGER;

      // Assert
      expect(dto.engagementWeight).toBe(Number.MAX_SAFE_INTEGER);
    });

    it('should handle minimum safe integer for engagement weight', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123';
      dto.engagementWeight = Number.MIN_SAFE_INTEGER;

      // Assert
      expect(dto.engagementWeight).toBe(Number.MIN_SAFE_INTEGER);
    });

    it('should handle Infinity for engagement weight', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123';
      dto.engagementWeight = Infinity;

      // Assert
      expect(dto.engagementWeight).toBe(Infinity);
    });

    it('should handle NaN for engagement weight', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123';
      dto.engagementWeight = NaN;

      // Assert
      expect(dto.engagementWeight).toBeNaN();
    });

    it('should handle very small event ID', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'e';
      dto.engagementWeight = 10;

      // Assert
      expect(dto.eventId).toBe('e');
    });

    it('should handle event ID with spaces', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event 123 test';
      dto.engagementWeight = 10;

      // Assert
      expect(dto.eventId).toBe('event 123 test');
    });

    it('should handle event ID with special characters', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event@123#test$456';
      dto.engagementWeight = 10;

      // Assert
      expect(dto.eventId).toBe('event@123#test$456');
    });

    it('should handle event ID with unicode characters', () => {
      // Arrange & Act
      const dto = new RecordEngagementOutputDTO();
      dto.eventId = 'event-123-测试-456';
      dto.engagementWeight = 10;

      // Assert
      expect(dto.eventId).toBe('event-123-测试-456');
    });
  });
});
