import { quadrangleArea, triangleArea } from './documentDetector';

describe('quadrangleArea', () => {
  it('should calculate the area of a square', () => {
    const a = { x: 0, y: 0 };
    const b = { x: 0, y: 1 };
    const c = { x: 1, y: 1 };
    const d = { x: 1, y: 0 };

    expect(quadrangleArea([a, b, c, d])).toBe(1);
  });

  it('should calculate the area of a quadrangle', () => {
    const a = { x: -2, y: 1 };
    const b = { x: -1, y: 0 };
    const c = { x: 1, y: 1 };
    const d = { x: 1, y: 2 };

    expect(quadrangleArea([a, b, c, d])).toBe(3);
  });
});

describe('triangleArea', () => {
  it('should calculate the area of a right triangle', () => {
    const a = { x: 0, y: 0 };
    const b = { x: 0, y: 1 };
    const c = { x: 2, y: 0 };

    expect(triangleArea(a, b, c)).toBe(1);
  });

  it('should calculate the area of a triangle', () => {
    const a = { x: -2, y: 1 };
    const b = { x: -1, y: 0 };
    const c = { x: 1, y: 1 };

    expect(triangleArea(a, b, c)).toBe(1.5);
  });
});