text: import Point from '../../../../src/ol/geom/Point.js';
  import {
    get as getProjection,
    getTransformFromProjections,
  } from '../../../../src/ol/proj.js';
  
  describe('ol.geom.Point', function () {
    it('cannot be constructed with a null geometry', function () {
      expect(function () {
        return new Point(null);
      }).to.throwException();
    });
  
    describe('construct with 2D coordinates', function () {
      let point;
      beforeEach(function () {
        point = new Point([1, 2]);
      });
  
      it('has the expected layout', function () {
        expect(point.getLayout()).to.be('XY');
      });
  
      it('has the expected coordinates', function () {
        expect(point.getCoordinates()).to.eql([1, 2]);
      });
  
      it('has the expected extent', function () {
        expect(point.getExtent()).to.eql([1, 2, 1, 2]);
      });
  
      it('has the expected flat coordinates', function () {
        expect(point.getFlatCoordinates()).to.eql([1, 2]);
      });
  
      it('has stride the expected stride', function () {
        expect(point.getStride()).to.be(2);
      });
  
      it('does not intersect non matching extent', function () {
        expect(point.intersectsExtent([0, 0, 10, 0.5])).to.be(false);
      });
  
      it("does intersect it's extent", function () {
        expect(point.intersectsExtent(point.getExtent())).to.be(true);
      });
    });
  
    describe('construct with 3D coordinates and layout XYM', function () {
      let point;
      beforeEach(function () {
        point = new Point([1, 2, 3], 'XYM');
      });
  
      it('has the expected layout', function () {
        expect(point.getLayout()).to.be('XYM');
      });
  
      it('has the expected coordinates', function () {
        expect(point.getCoordinates()).to.eql([1, 2, 3]);
      });
  
      it('has the expected extent', function () {
        expect(point.getExtent()).to.eql([1, 2, 1, 2]);
      });
  
      it('has the expected flat coordinates', function () {
        expect(point.getFlatCoordinates()).to.eql([1, 2, 3]);
      });
  
      it('has the expected stride', function () {
        expect(point.getStride()).to.be(3);
      });
  
      it('does not intersect non matching extent', function () {
        expect(point.intersectsExtent([0, 0, 10, 0.5])).to.be(false);
      });
  
      it("does intersect it's extent", function () {
        expect(point.intersectsExtent(point.getExtent())).to.be(true);
      });
    });
  
    describe('construct with 4D coordinates', function () {
      let point;
      beforeEach(function () {
        point = new Point([1, 2, 3, 4]);
      });
  
      it('has the expected layout', function () {
        expect(point.getLayout()).to.be('XYZM');
      });
  
      it('has the expected coordinates', function () {
        expect(point.getCoordinates()).to.eql([1, 2, 3, 4]);
      });
  
      it('has the expected extent', function () {
        expect(point.getExtent()).to.eql([1, 2, 1, 2]);
      });
  
      it('has the expected flat coordinates', function () {
        expect(point.getFlatCoordinates()).to.eql([1, 2, 3, 4]);
      });
  
      it('has the expected stride', function () {
        expect(point.getStride()).to.be(4);
      });
  
      it('does not intersect non matching extent', function () {
        expect(point.intersectsExtent([0, 0, 10, 0.5])).to.be(false);
      });
  
      it("does intersect it's extent", function () {
        expect(point.intersectsExtent(point.getExtent())).to.be(true);
      });
  
      describe('#getClosestPoint', function () {
        it('preseves extra dimensions', function () {
          const closestPoint = point.getClosestPoint([0, 0]);
          expect(closestPoint).to.eql([1, 2, 3, 4]);
        });
      });
    });
  
    describe('#scale()', function () {
      it('scales a point', function () {
        const geom = new Point([1, 2]);
        geom.scale(10e6);
        const coordinates = geom.getCoordinates();
        expect(coordinates).to.eql([1, 2]);
      });
  
      it('accepts sx and sy', function () {
        const geom = new Point([1, 2]);
        geom.scale(1e6, -42);
        const coordinates = geom.getCoordinates();
        expect(coordinates).to.eql([1, 2]);
      });
  
      it('accepts an anchor', function () {
        const geom = new Point([1, 2]);
        geom.scale(10, 15, [0, 0]);
        const coordinates = geom.getCoordinates();
        expect(coordinates).to.eql([10, 30]);
      });
    });
  
    describe('#simplifyTransformed()', function () {
      it('returns the same result if called twice with the same arguments', function () {
        const geom = new Point([1, 2]);
        const source = getProjection('EPSG:4326');
        const dest = getProjection('EPSG:3857');
        const transform = getTransformFromProjections(source, dest);
        const squaredTolerance = 0.5;
        const first = geom.simplifyTransformed(squaredTolerance, transform);
        const second = geom.simplifyTransformed(squaredTolerance, transform);
        expect(second).to.be(first);
      });
  
      it('returns a different result if called with a different tolerance', function () {
        const geom = new Point([1, 2]);
        const source = getProjection('EPSG:4326');
        const dest = getProjection('EPSG:3857');
        const transform = getTransformFromProjections(source, dest);
        const squaredTolerance = 0.5;
        const first = geom.simplifyTransformed(squaredTolerance, transform);
        const second = geom.simplifyTransformed(squaredTolerance * 2, transform);
        expect(second).not.to.be(first);
      });
  
      it('returns a different result if called after geometry modification', function () {
        const geom = new Point([1, 2]);
        const source = getProjection('EPSG:4326');
        const dest = getProjection('EPSG:3857');
        const transform = getTransformFromProjections(source, dest);
        const squaredTolerance = 0.5;
        const first = geom.simplifyTransformed(squaredTolerance, transform);
  
        geom.setCoordinates([3, 4]);
        const second = geom.simplifyTransformed(squaredTolerance * 2, transform);
        expect(second).not.to.be(first);
      });
    });
  
    describe('#applyTransform()', function () {
      let point, transform;
      beforeEach(function () {
        point = new Point([1, 2]);
        transform = sinon.spy();
      });
  
      it('calls a transform function', function () {
        point.applyTransform(transform);
        expect(transform.calledOnce).to.be(true);
        const args = transform.firstCall.args;
        expect(args).to.have.length(3);
  
        expect(args[0]).to.be(point.getFlatCoordinates()); // input coords
        expect(args[1]).to.be(point.getFlatCoordinates()); // output coords
        expect(args[2]).to.be(2); // dimension
      });
  
      it('allows for modification of coordinates', function () {
        const mod = function (input, output, dimension) {
          const copy = input.slice();
          output[1] = copy[0];
          output[0] = copy[1];
        };
        point.applyTransform(mod);
        expect(point.getCoordinates()).to.eql([2, 1]);
      });
  
      it('returns undefined', function () {
        const got = point.applyTransform(transform);
        expect(got).to.be(undefined);
      });
    });
  
    describe('#transform()', function () {
      it('transforms a geometry given CRS identifiers', function () {
        const point = new Point([-111, 45]).transform('EPSG:4326', 'EPSG:3857');
  
        expect(point).to.be.a(Point);
  
        const coords = point.getCoordinates();
  
        expect(coords[0]).to.roughlyEqual(-12356463.47, 1e-2);
        expect(coords[1]).to.roughlyEqual(5621521.48, 1e-2);
      });
  
      it('modifies the original', function () {
        const point = new Point([-111, 45]);
        point.transform('EPSG:4326', 'EPSG:3857');
        const coords = point.getCoordinates();
  
        expect(coords[0]).to.roughlyEqual(-12356463.47, 1e-2);
        expect(coords[1]).to.roughlyEqual(5621521.48, 1e-2);
      });
    });
  
    describe('#containsXY()', function () {
      it('does contain XY', function () {
        const point = new Point([1, 2]);
  
        expect(point.containsXY(1, 2)).to.be(true);
      });
  
      it('does not contain XY', function () {
        const point = new Point([1, 2]);
  
        expect(point.containsXY(1, 3)).to.be(false);
        expect(point.containsXY(2, 2)).to.be(false);
        expect(point.containsXY(2, 3)).to.be(false);
      });
    });
  });
  