tilbudgivern/backend/__tests__/siteGeometry.test.js

const { normalizeGeometry } = require('../src/services/siteGeometryService');
const ring = [[10,56],[10.001,56],[10.001,56.001],[10,56.001],[10,56]];
const input = coordinates => ({ geometry: { type: 'Polygon', coordinates: [coordinates] }, totals: { groundAreaM2: 1 } });
test('server calculates geodesic totals and fixes provenance instead of trusting client totals', () => {
  const result = normalizeGeometry(input(ring));
  expect(result.schema).toBe('site_geometry_v1');
  expect(result.totals.groundAreaM2).toBeCloseTo(6914, -1);
  expect(result.totals.perimeterM).toBeCloseTo(346.7, 0);
  expect(result.areas[0].source).toEqual({ type: 'user_drawn', provider: 'openstreetmap' });
  expect(result.areas[0].quality.grade).toBe('unverified');
  expect(result.totals.roofSlopedAreaM2).toBeNull();
});
test('accepts and normalizes a redundant midpoint inserted on a valid edge', () => {
  const withMidpoint = [[10,56],[10.0005,56],[10.001,56],[10.001,56.001],[10,56.001],[10,56]];
  const result = normalizeGeometry(input(withMidpoint));
  expect(result.totals.groundAreaM2).toBeCloseTo(6914, -1);
  expect(result.areas[0].geometry.coordinates[0]).toHaveLength(5);
});
test.each([
  ring.slice(0,-1),
  [[10,56],[10.001,56.001],[10,56.001],[10.001,56],[10,56]],
  [[181,56],[10,56],[10,57],[181,56]],
  [[10,91],[11,56],[10,57],[10,91]],
  [[10,56],[10,56],[10,57],[10,56]],
  [[10,56],[11,56],[12,56],[10,56]],
  [[10,56],['11',56],[10,57],[10,56]]
])('rejects invalid polygon %j', coordinates => {
  expect(() => normalizeGeometry(input(coordinates))).toThrow(expect.objectContaining({ code: 'SITE_GEOMETRY_INVALID', status: 400 }));
});

test.each([
  ['country-scale extent', [[8,54.5],[13,54.5],[13,57.8],[8,57.8],[8,54.5]]],
  ['continent-scale extent', [[-10,35],[30,35],[30,60],[-10,60],[-10,35]]],
  ['polar extent', [[10,88],[10.001,88],[10.001,88.001],[10,88.001],[10,88]]],
  ['outside supported Danish longitude', [[-100,56],[-99.999,56],[-99.999,56.001],[-100,56.001],[-100,56]]],
  ['excessive perimeter despite a narrow box', [[10,56],[10.04,56],[10.04,56.04],[10,56.04],[10,56]]]
])('rejects non-local work geometry: %s', (_label, coordinates) => {
  expect(() => normalizeGeometry(input(coordinates))).toThrow(expect.objectContaining({
    code: 'SITE_GEOMETRY_OUT_OF_BOUNDS', status: 400
  }));
});

test('retains an ordinary Danish property polygon within documented local-work bounds', () => {
  const result = normalizeGeometry(input([[12.567,55.676],[12.568,55.676],[12.568,55.677],[12.567,55.677],[12.567,55.676]]));
  expect(result.totals.groundAreaM2).toBeGreaterThan(6000);
  expect(result.totals.groundAreaM2).toBeLessThan(8000);
});