/opt/canhelp/node_modules/leaflet.markercluster/spec/suites
Edit: /opt/canhelp/node_modules/leaflet.markercluster/spec/suites/removeOutsideVisibleBoundsSpec.js (7234B)
describe('Option removeOutsideVisibleBounds', function () {
/////////////////////////////
// SETUP FOR EACH TEST
/////////////////////////////
var marker1, marker2, marker3, marker4, marker5, markers, div, map, group, clock, realBrowser;
beforeEach(function () {
realBrowser = L.Browser;
clock = sinon.useFakeTimers();
marker1 = L.marker([1.5, -0.4]); // 2 screens width away.
marker2 = L.marker([1.5, 0.6]); // 1 screen width away.
marker3 = L.marker([1.5, 1.5]); // In view port.
marker4 = L.marker([1.5, 2.4]); // 1 screen width away.
marker5 = L.marker([1.5, 3.4]); // 2 screens width away.
markers = [marker1, marker2, marker3, marker4, marker5];
div = document.createElement('div');
div.style.width = '200px';
div.style.height = '200px';
document.body.appendChild(div);
map = L.map(div, { maxZoom: 18, trackResize: false });
// Corresponds to zoom level 8 for the above div dimensions.
map.fitBounds(new L.LatLngBounds([
[1, 1],
[2, 2]
]));
// Add all markers once to map then remove them immediately so that their icon is null (instead of undefined).
for (i = 0; i < markers.length; i++) {
map.removeLayer(markers[i].addTo(map));
}
});
afterEach(function () {
if (group instanceof L.MarkerClusterGroup) {
//group.removeLayers(group.getLayers());
group.clearLayers();
map.removeLayer(group);
}
map.remove();
div.remove();
clock.restore();
marker1 = marker2 = marker3 = marker4 = marker5 = markers = div = map = group = clock = null;
});
function prepareGroup() {
// "group" should be assigned with a Marker Cluster Group before calling this function.
group.addTo(map);
group.addLayers(markers);
}
function setBrowserToMobile() {
var fakeBrowser = {};
for (k in realBrowser) {
fakeBrowser[k] = realBrowser[k];
}
fakeBrowser.mobile = true;
L.Browser = fakeBrowser;
}
/////////////////////////////
// TESTS
/////////////////////////////
it('removes objects more than 1 screen away from view port by default', function () {
group = L.markerClusterGroup();
prepareGroup();
expect(marker1._icon).to.be(null);
expect(map._panes.markerPane.childNodes.length).to.be(3); // markers 2, 3 and 4.
expect(marker5._icon).to.be(null);
});
it('removes objects out of view port by default for mobile device', function () {
setBrowserToMobile();
try {
group = L.markerClusterGroup();
prepareGroup();
expect(marker1._icon).to.be(null);
expect(marker2._icon).to.be(null);
expect(map._panes.markerPane.childNodes.length).to.be(1); // marker 3 only.
expect(marker4._icon).to.be(null);
expect(marker5._icon).to.be(null);
}
finally {
L.Browser = realBrowser;
}
});
it('leaves all objects on map when set to false', function () {
group = L.markerClusterGroup({
removeOutsideVisibleBounds: false
});
prepareGroup();
expect(map._panes.markerPane.childNodes.length).to.be(5); // All 5 markers.
});
// Following tests need markers at very high latitude.
// They test the _checkBoundsMaxLat method against the default Web/Spherical Mercator projection maximum latitude (85.0511287798).
// The actual map view should be '-1.0986328125,84.92929204957956,1.0986328125,85.11983467698401'
// The expanded bounds without correction should be '-3.2958984375,84.7387494221751,3.2958984375,85.31037730438847'
var latLngsMaxLatDefault = [
[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
[85.2, 1.5], // 1 "screen" heights away.
[85, 0], // In center of view.
[84.8, -1.5], // 1 "screen" height away.
[84.6, -3] // 2 "screens" height away.
];
function moveMarkersAndMapToMaxLat(latLngs, isSouth) {
for (i = 0; i < markers.length; i++) {
if (isSouth) {
markers[i].setLatLng([-latLngs[i][0], latLngs[i][1]]);
} else {
markers[i].setLatLng(latLngs[i]);
}
}
map.fitBounds([
[isSouth ? -86 : 85, -1],
[isSouth ? -85 : 86, 1] // The actual map view longitude span will be wider. '-1.0986328125,84.92929204957956,1.0986328125,85.11983467698401'
]);
}
function checkProjection(latLngs) {
expect(map.options.crs).to.equal(L.CRS.EPSG3857);
expect(L.CRS.EPSG3857.projection).to.equal(L.Projection.SphericalMercator);
expect(L.Projection.SphericalMercator.MAX_LATITUDE).to.be.a('number');
var mapZoom = map.getZoom();
for (i = 0; i < markers.length; i++) {
try {
expect(markers[i].__parent._zoom).to.be.below(mapZoom);
} catch (e) {
console.log("Failed marker: " + (i + 1));
throw e;
}
}
}
it('includes objects above the Web Mercator projection maximum limit by default', function () {
moveMarkersAndMapToMaxLat(latLngsMaxLatDefault);
group = L.markerClusterGroup();
prepareGroup();
checkProjection(latLngsMaxLatDefault);
expect(map._panes.markerPane.childNodes.length).to.be(4); // Markers 1, 2, 3 and 4.
expect(marker5._icon).to.be(null);
});
it('includes objects below the Web Mercator projection minimum limit by default', function () {
moveMarkersAndMapToMaxLat(latLngsMaxLatDefault, true);
// Make sure we are really in Southern hemisphere.
expect(map.getBounds().getNorth()).to.be.below(-80);
group = L.markerClusterGroup();
prepareGroup();
checkProjection(latLngsMaxLatDefault);
clock.tick(1000);
expect(map._panes.markerPane.childNodes.length).to.be(4); // Markers 1, 2, 3 and 4.
expect(marker5._icon).to.be(null);
});
// The actual map view should be '-1.0986328125,84.92929204957956,1.0986328125,85.11983467698401'
var latLngsMaxLatMobile = [
[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
[85.2, 0.5], // 1 "screen" heights away, but should be included by the correction.
[85, 0], // In center of view.
[84.9, -1], // 1 "screen" height away.
[84.8, -1.5] // 2 "screens" height away.
];
it('includes objects above the Web Mercator projection maximum limit for mobile device', function () {
setBrowserToMobile();
try {
moveMarkersAndMapToMaxLat(latLngsMaxLatMobile);
group = L.markerClusterGroup({
maxClusterRadius: 10
});
prepareGroup();
checkProjection(latLngsMaxLatMobile);
expect(map._panes.markerPane.childNodes.length).to.be(3); // Markers 1, 2 and 3.
expect(marker4._icon).to.be(null);
expect(marker5._icon).to.be(null);
}
finally {
L.Browser = realBrowser;
}
});
it('includes objects below the Web Mercator projection minimum limit for mobile device', function () {
setBrowserToMobile();
try {
moveMarkersAndMapToMaxLat(latLngsMaxLatMobile, true);
// Make sure we are really in Southern hemisphere.
expect(map.getBounds().getNorth()).to.be.below(-80);
group = L.markerClusterGroup({
maxClusterRadius: 10
});
prepareGroup();
checkProjection(latLngsMaxLatMobile);
expect(map._panes.markerPane.childNodes.length).to.be(3); // Markers 1, 2 and 3.
expect(marker4._icon).to.be(null);
expect(marker5._icon).to.be(null);
}
finally {
L.Browser = realBrowser;
}
});
});