329 lines
9.6 KiB
JavaScript
329 lines
9.6 KiB
JavaScript
describe('Polygon', function () {
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var c = document.createElement('div');
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c.style.width = '400px';
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c.style.height = '400px';
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var map = new L.Map(c);
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map.setView(new L.LatLng(55.8, 37.6), 6);
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describe("#initialize", function () {
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it("should never be flat", function () {
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var latLngs = [[1, 2], [3, 4]];
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var polygon = new L.Polygon(latLngs);
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expect(L.LineUtil.isFlat(polygon._latlngs)).to.be(false);
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expect(polygon.getLatLngs()).to.eql(polygon._latlngs);
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});
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it("doesn't overwrite the given latlng array", function () {
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var originalLatLngs = [
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[1, 2],
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[3, 4]
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];
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var sourceLatLngs = originalLatLngs.slice();
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var polygon = new L.Polygon(sourceLatLngs);
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expect(sourceLatLngs).to.eql(originalLatLngs);
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expect(polygon._latlngs).to.not.eql(sourceLatLngs);
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});
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it("can be called with an empty array", function () {
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var polygon = new L.Polygon([]);
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expect(polygon._latlngs).to.eql([[]]);
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expect(polygon.getLatLngs()).to.eql(polygon._latlngs);
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});
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it("can be initialized with holes", function () {
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var originalLatLngs = [
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[[0, 10], [10, 10], [10, 0]], // external ring
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[[2, 3], [2, 4], [3, 4]] // hole
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];
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var polygon = new L.Polygon(originalLatLngs);
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expect(polygon._latlngs).to.eql([
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[L.latLng([0, 10]), L.latLng([10, 10]), L.latLng([10, 0])],
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[L.latLng([2, 3]), L.latLng([2, 4]), L.latLng([3, 4])]
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]);
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expect(polygon.getLatLngs()).to.eql(polygon._latlngs);
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});
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it("can be initialized with multi including hole", function () {
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var latLngs = [
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[[[10, 20], [30, 40], [50, 60]]],
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[[[0, 10], [10, 10], [10, 0]], [[2, 3], [2, 4], [3, 4]]]
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];
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var polygon = new L.Polygon(latLngs);
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expect(polygon._latlngs).to.eql([
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[[L.latLng([10, 20]), L.latLng([30, 40]), L.latLng([50, 60])]],
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[[L.latLng([0, 10]), L.latLng([10, 10]), L.latLng([10, 0])], [L.latLng([2, 3]), L.latLng([2, 4]), L.latLng([3, 4])]]
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]);
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expect(polygon.getLatLngs()).to.eql(polygon._latlngs);
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});
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it("can be added to the map when empty", function () {
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var polygon = new L.Polygon([]).addTo(map);
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expect(map.hasLayer(polygon)).to.be(true);
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});
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});
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describe("#isEmpty", function () {
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it('should return true for a polygon with no latlngs', function () {
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var layer = new L.Polygon([]);
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expect(layer.isEmpty()).to.be(true);
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});
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it('should return false for simple polygon', function () {
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var latLngs = [[1, 2], [3, 4], [5, 6]];
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var layer = new L.Polygon(latLngs);
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expect(layer.isEmpty()).to.be(false);
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});
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it('should return false for a multi-polygon', function () {
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var latLngs = [
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[[[10, 20], [30, 40], [50, 60]]],
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[[[0, 10], [10, 10], [10, 0]], [[2, 3], [2, 4], [3, 4]]]
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];
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var layer = new L.Polygon(latLngs);
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expect(layer.isEmpty()).to.be(false);
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});
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});
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describe("#setLatLngs", function () {
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it("doesn't overwrite the given latlng array", function () {
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var originalLatLngs = [
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[1, 2],
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[3, 4]
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];
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var sourceLatLngs = originalLatLngs.slice();
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var polygon = new L.Polygon(sourceLatLngs);
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polygon.setLatLngs(sourceLatLngs);
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expect(sourceLatLngs).to.eql(originalLatLngs);
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});
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it("can be set external ring and holes", function () {
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var latLngs = [
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[[0, 10], [10, 10], [10, 0]], // external ring
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[[2, 3], [2, 4], [3, 4]] // hole
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];
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var polygon = new L.Polygon([]);
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polygon.setLatLngs(latLngs);
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expect(polygon.getLatLngs()).to.eql([
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[L.latLng([0, 10]), L.latLng([10, 10]), L.latLng([10, 0])],
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[L.latLng([2, 3]), L.latLng([2, 4]), L.latLng([3, 4])]
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]);
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});
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it("can be set multi including hole", function () {
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var latLngs = [
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[[[10, 20], [30, 40], [50, 60]]],
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[[[0, 10], [10, 10], [10, 0]], [[2, 3], [2, 4], [3, 4]]]
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];
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var polygon = new L.Polygon([]);
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polygon.setLatLngs(latLngs);
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expect(polygon.getLatLngs()).to.eql([
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[[L.latLng([10, 20]), L.latLng([30, 40]), L.latLng([50, 60])]],
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[[L.latLng([0, 10]), L.latLng([10, 10]), L.latLng([10, 0])], [L.latLng([2, 3]), L.latLng([2, 4]), L.latLng([3, 4])]]
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]);
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});
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});
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describe('#getCenter', function () {
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it('should compute center of a big simple polygon around equator', function () {
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var latlngs = [
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[[0, 0], [10, 0], [10, 10], [0, 10]]
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];
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var layer = new L.Polygon(latlngs).addTo(map);
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expect(layer.getCenter()).to.be.nearLatLng(L.latLng([5, 5]), 1e-1);
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});
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it('should compute center of a small simple polygon', function () {
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var latlngs = [
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[[0, 0], [0.010, 0], [0.010, 0.010], [0, 0.010]]
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];
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var layer = new L.Polygon(latlngs).addTo(map);
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map.setZoom(0); // Make the polygon disappear in screen.
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expect(layer.getCenter()).to.be.nearLatLng(L.latLng([0, 0]));
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});
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it('throws error if not yet added to map', function () {
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expect(function () {
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var latlngs = [
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[[0, 0], [10, 0], [10, 10], [0, 10]]
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];
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var layer = new L.Polygon(latlngs);
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var center = layer.getCenter();
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}).to.throwException('Must add layer to map before using getCenter()');
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});
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});
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describe("#_defaultShape", function () {
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it("should return latlngs on a simple polygon", function () {
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var latlngs = [
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L.latLng([1, 2]),
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L.latLng([3, 4])
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];
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var polygon = new L.Polygon(latlngs);
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expect(polygon._defaultShape()).to.eql(latlngs);
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});
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it("should return first latlngs on a polygon with hole", function () {
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var latlngs = [
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[L.latLng([0, 12]), L.latLng([13, 14]), L.latLng([15, 16])],
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[L.latLng([1, 2]), L.latLng([3, 4]), L.latLng([5, 6])]
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];
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var polygon = new L.Polygon(latlngs);
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expect(polygon._defaultShape()).to.eql(latlngs[0]);
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});
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it("should return first latlngs on a multipolygon", function () {
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var latlngs = [
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[[L.latLng([1, 2]), L.latLng([3, 4]), L.latLng([5, 6])]],
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[[L.latLng([11, 12]), L.latLng([13, 14]), L.latLng([15, 16])]]
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];
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var polygon = new L.Polygon(latlngs);
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expect(polygon._defaultShape()).to.eql(latlngs[0][0]);
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});
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it("should return first latlngs on a multipolygon with hole", function () {
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var latlngs = [
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[[L.latLng([0, 10]), L.latLng([10, 10]), L.latLng([10, 0])],
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[L.latLng([2, 3]), L.latLng([2, 4]), L.latLng([3, 4])]],
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[[L.latLng([10, 20]), L.latLng([30, 40]), L.latLng([50, 60])]]
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];
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var polygon = new L.Polygon(latlngs);
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expect(polygon._defaultShape()).to.eql(latlngs[0][0]);
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});
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});
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describe("#addLatLng", function () {
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it("should add latlng to latlngs", function () {
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var latLngs = [
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[1, 2],
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[3, 4]
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];
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var polygon = new L.Polygon(latLngs);
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polygon.addLatLng([5, 6]);
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expect(polygon._latlngs).to.eql([[L.latLng([1, 2]), L.latLng([3, 4]), L.latLng([5, 6])]]);
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});
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it("should add latlng to first latlngs on a polygon with hole", function () {
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var latLngs = [
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[[0, 12], [13, 14], [15, 16]],
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[[1, 2], [3, 4], [5, 6]]
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];
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var polygon = new L.Polygon(latLngs);
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polygon.addLatLng([17, 0]);
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expect(polygon._latlngs[0]).to.eql([L.latLng([0, 12]), L.latLng([13, 14]), L.latLng([15, 16]), L.latLng([17, 0])]);
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expect(polygon._latlngs[1]).to.eql([L.latLng([1, 2]), L.latLng([3, 4]), L.latLng([5, 6])]);
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});
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it("should add latlng by reference on a polygon with hole", function () {
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var latLngs = [
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[[0, 12], [13, 14], [15, 16]],
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[[1, 2], [3, 4], [5, 6]]
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];
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var polygon = new L.Polygon(latLngs);
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polygon.addLatLng([7, 8], polygon._latlngs[1]);
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expect(polygon._latlngs[0]).to.eql([L.latLng([0, 12]), L.latLng([13, 14]), L.latLng([15, 16])]);
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expect(polygon._latlngs[1]).to.eql([L.latLng([1, 2]), L.latLng([3, 4]), L.latLng([5, 6]), L.latLng([7, 8])]);
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});
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it("should add latlng to first latlngs on a multi", function () {
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var latLngs = [
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[[[1, 2], [3, 4]]],
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[[[11, 12], [13, 14], [15, 16]]]
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];
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var polygon = new L.Polygon(latLngs);
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polygon.addLatLng([5, 6]);
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expect(polygon._latlngs[0]).to.eql([[L.latLng([1, 2]), L.latLng([3, 4]), L.latLng([5, 6])]]);
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expect(polygon._latlngs[1]).to.eql([[L.latLng([11, 12]), L.latLng([13, 14]), L.latLng([15, 16])]]);
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});
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it("should add latlng to latlngs by reference on a multi", function () {
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var latLngs = [
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[[[11, 12], [13, 14], [15, 16]]],
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[[[1, 2], [3, 4]]]
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];
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var polygon = new L.Polygon(latLngs);
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polygon.addLatLng([5, 6], polygon._latlngs[1][0]);
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expect(polygon._latlngs[1]).to.eql([[L.latLng([1, 2]), L.latLng([3, 4]), L.latLng([5, 6])]]);
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expect(polygon._latlngs[0]).to.eql([[L.latLng([11, 12]), L.latLng([13, 14]), L.latLng([15, 16])]]);
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});
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it("should add latlng on first latlngs by default on a multipolygon with hole", function () {
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var latLngs = [
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[[[0, 10], [10, 10], [10, 0]], [[2, 3], [2, 4], [3, 4]]],
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[[[10, 20], [30, 40], [50, 60]]]
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];
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var polygon = new L.Polygon(latLngs);
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polygon.addLatLng([-10, -10]);
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expect(polygon._latlngs[0][0]).to.eql([L.latLng([0, 10]), L.latLng([10, 10]), L.latLng([10, 0]), L.latLng([-10, -10])]);
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expect(polygon._latlngs[0][1]).to.eql([L.latLng([2, 3]), L.latLng([2, 4]), L.latLng([3, 4])]);
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expect(polygon._latlngs[1][0]).to.eql([L.latLng([10, 20]), L.latLng([30, 40]), L.latLng([50, 60])]);
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});
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it("should add latlng by reference on a multipolygon with hole", function () {
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var latLngs = [
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[[[10, 20], [30, 40], [50, 60]]],
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[[[0, 10], [10, 10], [10, 0]], [[2, 3], [2, 4], [3, 4]]]
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];
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var polygon = new L.Polygon(latLngs);
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polygon.addLatLng([2, 2], polygon._latlngs[1][1]);
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expect(polygon._latlngs[0][0]).to.eql([L.latLng([10, 20]), L.latLng([30, 40]), L.latLng([50, 60])]);
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expect(polygon._latlngs[1][0]).to.eql([L.latLng([0, 10]), L.latLng([10, 10]), L.latLng([10, 0])]);
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expect(polygon._latlngs[1][1]).to.eql([L.latLng([2, 3]), L.latLng([2, 4]), L.latLng([3, 4]), L.latLng([2, 2])]);
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});
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});
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});
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