import { GetAnalyticsMetricsOutputDTO } from './GetAnalyticsMetricsOutputDTO';

describe('GetAnalyticsMetricsOutputDTO', () => {
  describe('TDD - Test First', () => {
    it('should create valid DTO with all fields', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 1000;
      dto.uniqueVisitors = 500;
      dto.averageSessionDuration = 300;
      dto.bounceRate = 0.4;

      // Assert
      expect(dto.pageViews).toBe(1000);
      expect(dto.uniqueVisitors).toBe(500);
      expect(dto.averageSessionDuration).toBe(300);
      expect(dto.bounceRate).toBe(0.4);
    });

    it('should handle zero values', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 0;
      dto.uniqueVisitors = 0;
      dto.averageSessionDuration = 0;
      dto.bounceRate = 0;

      // Assert
      expect(dto.pageViews).toBe(0);
      expect(dto.uniqueVisitors).toBe(0);
      expect(dto.averageSessionDuration).toBe(0);
      expect(dto.bounceRate).toBe(0);
    });

    it('should handle large numbers', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 1000000;
      dto.uniqueVisitors = 500000;
      dto.averageSessionDuration = 3600;
      dto.bounceRate = 0.95;

      // Assert
      expect(dto.pageViews).toBe(1000000);
      expect(dto.uniqueVisitors).toBe(500000);
      expect(dto.averageSessionDuration).toBe(3600);
      expect(dto.bounceRate).toBe(0.95);
    });

    it('should handle single digit values', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 1;
      dto.uniqueVisitors = 1;
      dto.averageSessionDuration = 1;
      dto.bounceRate = 0.1;

      // Assert
      expect(dto.pageViews).toBe(1);
      expect(dto.uniqueVisitors).toBe(1);
      expect(dto.averageSessionDuration).toBe(1);
      expect(dto.bounceRate).toBe(0.1);
    });

    it('should handle unique visitors greater than page views', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 100;
      dto.uniqueVisitors = 150;
      dto.averageSessionDuration = 300;
      dto.bounceRate = 0.4;

      // Assert
      expect(dto.pageViews).toBe(100);
      expect(dto.uniqueVisitors).toBe(150);
    });

    it('should handle zero unique visitors', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 100;
      dto.uniqueVisitors = 0;
      dto.averageSessionDuration = 300;
      dto.bounceRate = 0.4;

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

    it('should handle zero page views', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 0;
      dto.uniqueVisitors = 0;
      dto.averageSessionDuration = 300;
      dto.bounceRate = 0.4;

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

    it('should handle zero average session duration', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 100;
      dto.uniqueVisitors = 50;
      dto.averageSessionDuration = 0;
      dto.bounceRate = 0.4;

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

    it('should handle zero bounce rate', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 100;
      dto.uniqueVisitors = 50;
      dto.averageSessionDuration = 300;
      dto.bounceRate = 0;

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

    it('should handle bounce rate of 1.0', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 100;
      dto.uniqueVisitors = 50;
      dto.averageSessionDuration = 300;
      dto.bounceRate = 1.0;

      // Assert
      expect(dto.bounceRate).toBe(1.0);
    });

    it('should handle very large numbers', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 999999999;
      dto.uniqueVisitors = 888888888;
      dto.averageSessionDuration = 777777777;
      dto.bounceRate = 0.999999;

      // Assert
      expect(dto.pageViews).toBe(999999999);
      expect(dto.uniqueVisitors).toBe(888888888);
      expect(dto.averageSessionDuration).toBe(777777777);
      expect(dto.bounceRate).toBe(0.999999);
    });

    it('should handle decimal numbers', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 100.5;
      dto.uniqueVisitors = 50.7;
      dto.averageSessionDuration = 300.3;
      dto.bounceRate = 0.45;

      // Assert
      expect(dto.pageViews).toBe(100.5);
      expect(dto.uniqueVisitors).toBe(50.7);
      expect(dto.averageSessionDuration).toBe(300.3);
      expect(dto.bounceRate).toBe(0.45);
    });

    it('should handle negative numbers', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = -100;
      dto.uniqueVisitors = -50;
      dto.averageSessionDuration = -300;
      dto.bounceRate = -0.4;

      // Assert
      expect(dto.pageViews).toBe(-100);
      expect(dto.uniqueVisitors).toBe(-50);
      expect(dto.averageSessionDuration).toBe(-300);
      expect(dto.bounceRate).toBe(-0.4);
    });

    it('should handle scientific notation', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 1e6;
      dto.uniqueVisitors = 5e5;
      dto.averageSessionDuration = 3e2;
      dto.bounceRate = 4e-1;

      // Assert
      expect(dto.pageViews).toBe(1000000);
      expect(dto.uniqueVisitors).toBe(500000);
      expect(dto.averageSessionDuration).toBe(300);
      expect(dto.bounceRate).toBe(0.4);
    });

    it('should handle maximum safe integer', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = Number.MAX_SAFE_INTEGER;
      dto.uniqueVisitors = Number.MAX_SAFE_INTEGER;
      dto.averageSessionDuration = Number.MAX_SAFE_INTEGER;
      dto.bounceRate = 0.99;

      // Assert
      expect(dto.pageViews).toBe(Number.MAX_SAFE_INTEGER);
      expect(dto.uniqueVisitors).toBe(Number.MAX_SAFE_INTEGER);
      expect(dto.averageSessionDuration).toBe(Number.MAX_SAFE_INTEGER);
      expect(dto.bounceRate).toBe(0.99);
    });

    it('should handle minimum safe integer', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = Number.MIN_SAFE_INTEGER;
      dto.uniqueVisitors = Number.MIN_SAFE_INTEGER;
      dto.averageSessionDuration = Number.MIN_SAFE_INTEGER;
      dto.bounceRate = -0.99;

      // Assert
      expect(dto.pageViews).toBe(Number.MIN_SAFE_INTEGER);
      expect(dto.uniqueVisitors).toBe(Number.MIN_SAFE_INTEGER);
      expect(dto.averageSessionDuration).toBe(Number.MIN_SAFE_INTEGER);
      expect(dto.bounceRate).toBe(-0.99);
    });

    it('should handle Infinity for page views', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = Infinity;
      dto.uniqueVisitors = 500;
      dto.averageSessionDuration = 300;
      dto.bounceRate = 0.4;

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

    it('should handle Infinity for unique visitors', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 1000;
      dto.uniqueVisitors = Infinity;
      dto.averageSessionDuration = 300;
      dto.bounceRate = 0.4;

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

    it('should handle Infinity for average session duration', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 1000;
      dto.uniqueVisitors = 500;
      dto.averageSessionDuration = Infinity;
      dto.bounceRate = 0.4;

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

    it('should handle NaN for page views', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = NaN;
      dto.uniqueVisitors = 500;
      dto.averageSessionDuration = 300;
      dto.bounceRate = 0.4;

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

    it('should handle NaN for unique visitors', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 1000;
      dto.uniqueVisitors = NaN;
      dto.averageSessionDuration = 300;
      dto.bounceRate = 0.4;

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

    it('should handle NaN for average session duration', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 1000;
      dto.uniqueVisitors = 500;
      dto.averageSessionDuration = NaN;
      dto.bounceRate = 0.4;

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

    it('should handle NaN for bounce rate', () => {
      // Arrange & Act
      const dto = new GetAnalyticsMetricsOutputDTO();
      dto.pageViews = 1000;
      dto.uniqueVisitors = 500;
      dto.averageSessionDuration = 300;
      dto.bounceRate = NaN;

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