112 lines
3.4 KiB
JavaScript
112 lines
3.4 KiB
JavaScript
describe('Polyline', 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("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 polyline = new L.Polyline(sourceLatLngs);
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expect(sourceLatLngs).to.eql(originalLatLngs);
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expect(polyline._latlngs).to.not.eql(sourceLatLngs);
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expect(polyline.getLatLngs()).to.eql(polyline._latlngs);
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});
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it("should accept a multi", function () {
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var latLngs = [
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[[1, 2], [3, 4], [5, 6]],
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[[11, 12], [13, 14], [15, 16]]
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];
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var polyline = new L.Polyline(latLngs);
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expect(polyline._latlngs[0]).to.eql([L.latLng([1, 2]), L.latLng([3, 4]), L.latLng([5, 6])]);
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expect(polyline._latlngs[1]).to.eql([L.latLng([11, 12]), L.latLng([13, 14]), L.latLng([15, 16])]);
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expect(polyline.getLatLngs()).to.eql(polyline._latlngs);
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});
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it("should accept an empty array", function () {
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var polyline = new L.Polyline([]);
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expect(polyline._latlngs).to.eql([]);
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expect(polyline.getLatLngs()).to.eql(polyline._latlngs);
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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 polyline = new L.Polyline(sourceLatLngs);
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polyline.setLatLngs(sourceLatLngs);
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expect(sourceLatLngs).to.eql(originalLatLngs);
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});
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it("can be set a multi", function () {
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var latLngs = [
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[[1, 2], [3, 4], [5, 6]],
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[[11, 12], [13, 14], [15, 16]]
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];
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var polyline = new L.Polyline([]);
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polyline.setLatLngs(latLngs);
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expect(polyline._latlngs[0]).to.eql([L.latLng([1, 2]), L.latLng([3, 4]), L.latLng([5, 6])]);
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expect(polyline._latlngs[1]).to.eql([L.latLng([11, 12]), L.latLng([13, 14]), L.latLng([15, 16])]);
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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 flat line on equator', function () {
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var polyline = new L.Polyline([[0, 0], [0, 90]]).addTo(map);
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expect(polyline.getCenter()).to.eql(L.latLng([0, 45]));
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});
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it('should compute center of a big flat line close to the pole', function () {
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var polyline = new L.Polyline([[80, 0], [80, 90]]).addTo(map);
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expect(polyline.getCenter()).to.be.nearLatLng(L.latLng([80, 45]), 1e-2);
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});
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it('should compute center of a big diagonal line', function () {
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var polyline = new L.Polyline([[0, 0], [80, 80]]).addTo(map);
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expect(polyline.getCenter()).to.be.nearLatLng(L.latLng([57, 40]), 1);
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});
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it('should compute center of a diagonal line close to the pole', function () {
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var polyline = new L.Polyline([[70, 70], [84, 84]]).addTo(map);
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expect(polyline.getCenter()).to.be.nearLatLng(L.latLng([79, 77]), 1);
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});
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it('should compute center of a big multiline', function () {
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var polyline = new L.Polyline([[10, -80], [0, 0], [0, 10], [10, 90]]).addTo(map);
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expect(polyline.getCenter()).to.be.nearLatLng(L.latLng([0, 5]), 1);
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});
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it('should compute center of a small flat line', function () {
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var polyline = new L.Polyline([[0, 0], [0, 0.090]]).addTo(map);
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map.setZoom(0); // Make the line disappear in screen;
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expect(polyline.getCenter()).to.be.nearLatLng(L.latLng([0, 0]), 1e-2);
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});
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});
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});
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