249 lines
7.3 KiB
JavaScript
249 lines
7.3 KiB
JavaScript
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describe('Option removeOutsideVisibleBounds', function () {
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/////////////////////////////
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// SETUP FOR EACH TEST
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/////////////////////////////
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var marker1, marker2, marker3, marker4, marker5, markers, div, map, group, clock, realBrowser;
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beforeEach(function () {
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realBrowser = L.Browser;
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clock = sinon.useFakeTimers();
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marker1 = L.marker([1.5, -0.4]); // 2 screens width away.
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marker2 = L.marker([1.5, 0.6]); // 1 screen width away.
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marker3 = L.marker([1.5, 1.5]); // In view port.
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marker4 = L.marker([1.5, 2.4]); // 1 screen width away.
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marker5 = L.marker([1.5, 3.4]); // 2 screens width away.
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markers = [marker1, marker2, marker3, marker4, marker5];
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div = document.createElement('div');
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div.style.width = '200px';
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div.style.height = '200px';
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document.body.appendChild(div);
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map = L.map(div, { maxZoom: 18, trackResize: false });
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// Corresponds to zoom level 8 for the above div dimensions.
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map.fitBounds(new L.LatLngBounds([
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[1, 1],
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[2, 2]
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]));
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// Add all markers once to map then remove them immediately so that their icon is null (instead of undefined).
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for (i = 0; i < markers.length; i++) {
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map.removeLayer(markers[i].addTo(map));
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}
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});
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afterEach(function () {
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if (group instanceof L.MarkerClusterGroup) {
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//group.removeLayers(group.getLayers());
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group.clearLayers();
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map.removeLayer(group);
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}
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map.remove();
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div.remove();
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clock.restore();
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marker1 = marker2 = marker3 = marker4 = marker5 = markers = div = map = group = clock = null;
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});
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function prepareGroup() {
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// "group" should be assigned with a Marker Cluster Group before calling this function.
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group.addTo(map);
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group.addLayers(markers);
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}
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function setBrowserToMobile() {
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var fakeBrowser = {};
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for (k in realBrowser) {
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fakeBrowser[k] = realBrowser[k];
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}
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fakeBrowser.mobile = true;
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L.Browser = fakeBrowser;
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}
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/////////////////////////////
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// TESTS
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/////////////////////////////
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it('removes objects more than 1 screen away from view port by default', function () {
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group = L.markerClusterGroup();
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prepareGroup();
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expect(marker1._icon).to.be(null);
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expect(map._panes.markerPane.childNodes.length).to.be(3); // markers 2, 3 and 4.
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expect(marker5._icon).to.be(null);
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});
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it('removes objects out of view port by default for mobile device', function () {
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setBrowserToMobile();
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try {
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group = L.markerClusterGroup();
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prepareGroup();
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expect(marker1._icon).to.be(null);
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expect(marker2._icon).to.be(null);
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expect(map._panes.markerPane.childNodes.length).to.be(1); // marker 3 only.
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expect(marker4._icon).to.be(null);
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expect(marker5._icon).to.be(null);
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}
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finally {
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L.Browser = realBrowser;
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}
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});
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it('leaves all objects on map when set to false', function () {
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group = L.markerClusterGroup({
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removeOutsideVisibleBounds: false
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});
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prepareGroup();
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expect(map._panes.markerPane.childNodes.length).to.be(5); // All 5 markers.
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});
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// Following tests need markers at very high latitude.
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// They test the _checkBoundsMaxLat method against the default Web/Spherical Mercator projection maximum latitude (85.0511287798).
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// The actual map view should be '-1.0986328125,84.92929204957956,1.0986328125,85.11983467698401'
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// The expanded bounds without correction should be '-3.2958984375,84.7387494221751,3.2958984375,85.31037730438847'
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var latLngsMaxLatDefault = [
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[100, 3], // Impossible in real world, but nothing prevents the user from entering such latitude, and Web/Spherical Mercator projection will still display it at 85.0511287798
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[85.2, 1.5], // 1 "screen" heights away.
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[85, 0], // In center of view.
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[84.8, -1.5], // 1 "screen" height away.
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[84.6, -3] // 2 "screens" height away.
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];
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function moveMarkersAndMapToMaxLat(latLngs, isSouth) {
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for (i = 0; i < markers.length; i++) {
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if (isSouth) {
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markers[i].setLatLng([-latLngs[i][0], latLngs[i][1]]);
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} else {
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markers[i].setLatLng(latLngs[i]);
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}
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}
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map.fitBounds([
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[isSouth ? -86 : 85, -1],
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[isSouth ? -85 : 86, 1] // The actual map view longitude span will be wider. '-1.0986328125,84.92929204957956,1.0986328125,85.11983467698401'
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]);
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}
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function checkProjection(latLngs) {
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expect(map.options.crs).to.equal(L.CRS.EPSG3857);
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expect(L.CRS.EPSG3857.projection).to.equal(L.Projection.SphericalMercator);
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expect(L.Projection.SphericalMercator.MAX_LATITUDE).to.be.a('number');
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var mapZoom = map.getZoom();
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for (i = 0; i < markers.length; i++) {
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try {
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expect(markers[i].__parent._zoom).to.be.below(mapZoom);
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} catch (e) {
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console.log("Failed marker: " + (i + 1));
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throw e;
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}
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}
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}
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it('includes objects above the Web Mercator projection maximum limit by default', function () {
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moveMarkersAndMapToMaxLat(latLngsMaxLatDefault);
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group = L.markerClusterGroup();
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prepareGroup();
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checkProjection(latLngsMaxLatDefault);
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expect(map._panes.markerPane.childNodes.length).to.be(4); // Markers 1, 2, 3 and 4.
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expect(marker5._icon).to.be(null);
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});
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it('includes objects below the Web Mercator projection minimum limit by default', function () {
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moveMarkersAndMapToMaxLat(latLngsMaxLatDefault, true);
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// Make sure we are really in Southern hemisphere.
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expect(map.getBounds().getNorth()).to.be.below(-80);
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group = L.markerClusterGroup();
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prepareGroup();
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checkProjection(latLngsMaxLatDefault);
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clock.tick(1000);
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expect(map._panes.markerPane.childNodes.length).to.be(4); // Markers 1, 2, 3 and 4.
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expect(marker5._icon).to.be(null);
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});
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// The actual map view should be '-1.0986328125,84.92929204957956,1.0986328125,85.11983467698401'
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var latLngsMaxLatMobile = [
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[100, 1], // Impossible in real world, but nothing prevents the user from entering such latitude, and Web/Spherical Mercator projection will still display it at 85.0511287798
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[85.2, 0.5], // 1 "screen" heights away, but should be included by the correction.
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[85, 0], // In center of view.
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[84.9, -1], // 1 "screen" height away.
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[84.8, -1.5] // 2 "screens" height away.
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];
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it('includes objects above the Web Mercator projection maximum limit for mobile device', function () {
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setBrowserToMobile();
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try {
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moveMarkersAndMapToMaxLat(latLngsMaxLatMobile);
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group = L.markerClusterGroup({
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maxClusterRadius: 10
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});
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prepareGroup();
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checkProjection(latLngsMaxLatMobile);
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expect(map._panes.markerPane.childNodes.length).to.be(3); // Markers 1, 2 and 3.
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expect(marker4._icon).to.be(null);
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expect(marker5._icon).to.be(null);
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}
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finally {
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L.Browser = realBrowser;
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}
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});
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it('includes objects below the Web Mercator projection minimum limit for mobile device', function () {
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setBrowserToMobile();
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try {
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moveMarkersAndMapToMaxLat(latLngsMaxLatMobile, true);
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// Make sure we are really in Southern hemisphere.
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expect(map.getBounds().getNorth()).to.be.below(-80);
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group = L.markerClusterGroup({
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maxClusterRadius: 10
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});
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prepareGroup();
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checkProjection(latLngsMaxLatMobile);
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expect(map._panes.markerPane.childNodes.length).to.be(3); // Markers 1, 2 and 3.
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expect(marker4._icon).to.be(null);
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expect(marker5._icon).to.be(null);
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}
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finally {
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L.Browser = realBrowser;
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}
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});
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});
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