leaflet.markercluster
Version:
Provides Beautiful Animated Marker Clustering functionality for Leaflet
382 lines (245 loc) • 9.63 kB
JavaScript
describe('spiderfy', function () {
/**
* Avoid as much as possible creating and destroying objects for each test.
* Instead, try re-using them, except for the ones under test of course.
* PhantomJS does not perform garbage collection for the life of the page,
* i.e. during the entire test process (Karma runs all tests in a single page).
* http://stackoverflow.com/questions/27239708/how-to-get-around-memory-error-with-karma-phantomjs
*
* The `beforeEach` and `afterEach do not seem to cause much issue.
* => they can still be used to initialize some setup between each test.
* Using them keeps a readable spec/index.
*
* But refrain from re-creating div and map every time. Re-use those objects.
*/
/////////////////////////////
// SETUP FOR EACH TEST
/////////////////////////////
beforeEach(function () {
clock = sinon.useFakeTimers();
});
afterEach(function () {
if (group instanceof L.MarkerClusterGroup) {
group.removeLayers(group.getLayers());
map.removeLayer(group);
}
// group must be thrown away since we are testing it with a potentially
// different configuration at each test.
group = null;
clock.restore();
clock = null;
});
/////////////////////////////
// PREPARATION CODE
/////////////////////////////
var div, map, group, clock;
div = document.createElement('div');
div.style.width = '200px';
div.style.height = '200px';
document.body.appendChild(div);
map = L.map(div, { maxZoom: 18 });
// Corresponds to zoom level 8 for the above div dimensions.
map.fitBounds(new L.LatLngBounds([
[1, 1],
[2, 2]
]));
/////////////////////////////
// TESTS
/////////////////////////////
it('Spiderfies 2 Markers', function () {
group = new L.MarkerClusterGroup();
var marker = new L.Marker([1.5, 1.5]);
var marker2 = new L.Marker([1.5, 1.5]);
group.addLayer(marker);
group.addLayer(marker2);
map.addLayer(group);
marker.__parent.spiderfy();
expect(marker._icon.parentNode).to.be(map._panes.markerPane);
expect(marker2._icon.parentNode).to.be(map._panes.markerPane);
});
it('Spiderfies 2 CircleMarkers', function () {
group = new L.MarkerClusterGroup();
var marker = new L.CircleMarker([1.5, 1.5]);
var marker2 = new L.CircleMarker([1.5, 1.5]);
group.addLayer(marker);
group.addLayer(marker2);
map.addLayer(group);
marker.__parent.spiderfy();
// Leaflet 1.0.0 now uses an intermediate L.Renderer.
// marker > _path > _rootGroup (g) > _container (svg) > pane (div)
expect(marker._path.parentNode.parentNode.parentNode).to.be(map.getPane('overlayPane'));
expect(marker2._path.parentNode.parentNode.parentNode).to.be(map.getPane('overlayPane'));
});
it('Spiderfies 2 Circles', function () {
group = new L.MarkerClusterGroup();
var marker = new L.Circle([1.5, 1.5], 10);
var marker2 = new L.Circle([1.5, 1.5], 10);
group.addLayer(marker);
group.addLayer(marker2);
map.addLayer(group);
marker.__parent.spiderfy();
expect(marker._path.parentNode.parentNode.parentNode).to.be(map.getPane('overlayPane'));
expect(marker2._path.parentNode.parentNode.parentNode).to.be(map.getPane('overlayPane'));
});
it('Spiderfies at current zoom if all child markers are at the exact same position', function () {
group = new L.MarkerClusterGroup();
var marker = new L.Marker([1.5, 1.5]);
var marker2 = new L.Marker([1.5, 1.5]);
group.addLayers([marker, marker2]);
map.addLayer(group);
// Get the appropriate cluster.
var cluster = marker.__parent,
zoom = map.getZoom();
while (cluster._zoom !== zoom) {
cluster = cluster.__parent;
}
expect(zoom).to.be.lessThan(10);
cluster.fireEvent('click', null, true);
clock.tick(1000);
expect(map.getZoom()).to.equal(zoom);
expect(marker._icon.parentNode).to.be(map._panes.markerPane);
expect(marker2._icon.parentNode).to.be(map._panes.markerPane);
});
it('Spiderfies at current zoom if all child markers are still within a single cluster at map maxZoom', function () {
group = new L.MarkerClusterGroup();
var marker = new L.Marker([1.5, 1.50001]);
var marker2 = new L.Marker([1.5, 1.5]);
group.addLayers([marker, marker2]);
map.addLayer(group);
expect(marker.__parent._zoom).to.equal(18);
// Get the appropriate cluster.
var cluster = marker.__parent,
zoom = map.getZoom();
while (cluster._zoom !== zoom) {
cluster = cluster.__parent;
}
expect(zoom).to.be.lessThan(10);
cluster.fireEvent('click', null, true);
clock.tick(1000);
expect(map.getZoom()).to.equal(zoom);
expect(marker._icon.parentNode).to.be(map._panes.markerPane);
expect(marker2._icon.parentNode).to.be(map._panes.markerPane);
});
it('removes all markers and spider legs when group is removed from map', function () {
group = new L.MarkerClusterGroup();
var marker = new L.Marker([1.5, 1.5]);
var marker2 = new L.Marker([1.5, 1.5]);
group.addLayers([marker, marker2]);
map.addLayer(group);
marker.__parent.spiderfy();
expect(map._panes.markerPane.childNodes.length).to.be(3); // The 2 markers + semi-transparent cluster.
expect(map.getPane('overlayPane').firstChild.firstChild.childNodes.length).to.be(2); // The 2 spider legs.
});
it('adds then removes class "leaflet-cluster-anim" from mapPane on spiderfy', function () {
group = new L.MarkerClusterGroup();
var marker = new L.Marker([1.5, 1.5]);
var marker2 = new L.Marker([1.5, 1.5]);
group.addLayers([marker, marker2]);
map.addLayer(group);
marker.__parent.spiderfy();
expect(map._panes.mapPane.className).to.contain('leaflet-cluster-anim');
clock.tick(1000);
expect(map._panes.mapPane.className).to.not.contain('leaflet-cluster-anim');
});
it('adds then removes class "leaflet-cluster-anim" from mapPane on unspiderfy', function () {
group = new L.MarkerClusterGroup();
var marker = new L.Marker([1.5, 1.5]);
var marker2 = new L.Marker([1.5, 1.5]);
group.addLayers([marker, marker2]);
map.addLayer(group);
marker.__parent.spiderfy();
clock.tick(1000);
marker.__parent.unspiderfy();
expect(map._panes.mapPane.className).to.contain('leaflet-cluster-anim');
clock.tick(1000);
expect(map._panes.mapPane.className).to.not.contain('leaflet-cluster-anim');
});
it('fires unspiderfied event on unspiderfy', function (done) {
group = new L.MarkerClusterGroup();
var marker = new L.Marker([1.5, 1.5]);
var marker2 = new L.Marker([1.5, 1.5]);
group.addLayers([marker, marker2]);
map.addLayer(group);
marker.__parent.spiderfy();
clock.tick(1000);
// Add event listener
group.on('unspiderfied', function (event) {
expect(event.target).to.be(group);
expect(event.cluster).to.be.a(L.Marker);
expect(event.markers[1]).to.be(marker);
expect(event.markers[0]).to.be(marker2);
done();
});
marker.__parent.unspiderfy();
clock.tick(1000);
});
it('does not leave class "leaflet-cluster-anim" on mapPane when group is removed while spiderfied', function () {
group = new L.MarkerClusterGroup();
var marker = new L.Marker([1.5, 1.5]);
var marker2 = new L.Marker([1.5, 1.5]);
group.addLayers([marker, marker2]);
map.addLayer(group);
marker.__parent.spiderfy();
clock.tick(1000);
map.removeLayer(group);
expect(map._panes.mapPane.className).to.not.contain('leaflet-cluster-anim');
});
describe('zoomend event listener', function () {
it('unspiderfies correctly', function () {
group = new L.MarkerClusterGroup();
var marker = new L.Circle([1.5, 1.5], 10);
var marker2 = new L.Circle([1.5, 1.5], 10);
group.addLayer(marker);
group.addLayer(marker2);
map.addLayer(group);
marker.__parent.spiderfy();
expect(group._spiderfied).to.not.be(null);
map.fire('zoomend');
//We should unspiderfy with no animation, so this should be null
expect(group._spiderfied).to.be(null);
});
});
describe('spiderfied event listener', function () {
it('Spiderfies 2 Markers', function (done) {
group = new L.MarkerClusterGroup();
var marker = new L.Marker([1.5, 1.5]);
var marker2 = new L.Marker([1.5, 1.5]);
group.addLayer(marker);
group.addLayer(marker2);
map.addLayer(group);
// Add event listener
group.on('spiderfied', function (event) {
expect(event.target).to.be(group);
expect(event.cluster).to.be.a(L.Marker);
expect(event.markers[1]).to.be(marker);
expect(event.markers[0]).to.be(marker2);
done();
});
marker.__parent.spiderfy();
clock.tick(200);
});
it('Spiderfies 2 Circles', function (done) {
group = new L.MarkerClusterGroup();
var marker = new L.Circle([1.5, 1.5], 10);
var marker2 = new L.Circle([1.5, 1.5], 10);
group.addLayer(marker);
group.addLayer(marker2);
map.addLayer(group);
// Add event listener
group.on('spiderfied', function (event) {
expect(event.target).to.be(group);
expect(event.cluster).to.be.a(L.Marker);
expect(event.markers[1]).to.be(marker);
expect(event.markers[0]).to.be(marker2);
done();
});
marker.__parent.spiderfy();
clock.tick(200);
});
});
/////////////////////////////
// CLEAN UP CODE
/////////////////////////////
map.remove();
document.body.removeChild(div);
});