describe('addLayers adding multiple markers', function () {

	/////////////////////////////

	// SETUP FOR EACH TEST

	/////////////////////////////

	var div, map, group;



	beforeEach(function () {

		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]

		]));

	});



	afterEach(function () {

		if (group instanceof L.MarkerClusterGroup) {

			group.clearLayers();

			map.removeLayer(group);

		}



		map.remove();

		div.remove()



		div = map = group = null;

	});



	/////////////////////////////

	// TESTS

	/////////////////////////////

	it('creates a cluster when 2 overlapping markers are added before the group is added to the 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);



		expect(marker._icon).to.be(undefined);

		expect(marker2._icon).to.be(undefined);



		expect(map._panes.markerPane.childNodes.length).to.be(1);

	});



	it('creates a cluster when 2 overlapping markers are added after the group is added to the map', function () {



		group = new L.MarkerClusterGroup();



		var marker = new L.Marker([1.5, 1.5]);

		var marker2 = new L.Marker([1.5, 1.5]);



		map.addLayer(group);

		group.addLayers([marker, marker2]);



		expect(marker._icon).to.be(undefined);

		expect(marker2._icon).to.be(undefined);



		expect(map._panes.markerPane.childNodes.length).to.be(1);

	});



	it('creates a cluster and marker when 2 overlapping markers and one non-overlapping are added before the group is added to the map', function () {



		group = new L.MarkerClusterGroup();



		var marker = new L.Marker([1.5, 1.5]);

		var marker2 = new L.Marker([1.5, 1.5]);

		var marker3 = new L.Marker([3.0, 1.5]);



		group.addLayers([marker, marker2, marker3]);

		map.addLayer(group);



		expect(marker._icon).to.be(undefined);

		expect(marker2._icon).to.be(undefined);

		expect(marker3._icon.parentNode).to.be(map._panes.markerPane);



		expect(map._panes.markerPane.childNodes.length).to.be(2);

	});



	it('creates a cluster and marker when 2 overlapping markers and one non-overlapping are added after the group is added to the map', function () {



		group = new L.MarkerClusterGroup();



		var marker = new L.Marker([1.5, 1.5]);

		var marker2 = new L.Marker([1.5, 1.5]);

		var marker3 = new L.Marker([3.0, 1.5]);



		map.addLayer(group);

		group.addLayers([marker, marker2, marker3]);



		expect(marker._icon).to.be(undefined);

		expect(marker2._icon).to.be(undefined);

		expect(marker3._icon.parentNode).to.be(map._panes.markerPane);



		expect(map._panes.markerPane.childNodes.length).to.be(2);

	});



	it('handles nested Layer Groups', function () {



		group = new L.MarkerClusterGroup();



		var marker1 = new L.Marker([1.5, 1.5]);

		var marker2 = new L.Marker([1.5, 1.5]);

		var marker3 = new L.Marker([3.0, 1.5]);

		var layerGroup = new L.LayerGroup([marker1, new L.LayerGroup([marker2])]);



		map.addLayer(group);

		group.addLayers([layerGroup, marker3]);



		expect(marker1._icon).to.be(undefined);

		expect(marker2._icon).to.be(undefined);

		expect(marker3._icon.parentNode).to.be(map._panes.markerPane);



		expect(map._panes.markerPane.childNodes.length).to.be(2);

	});



	it('unspiderfies before adding new Marker(s)', function () {



		var clock = sinon.useFakeTimers();



		group = new L.MarkerClusterGroup();



		var marker = new L.Marker([1.5, 1.5]);

		var marker2 = new L.Marker([1.5, 1.5]);

		var marker3 = new L.Marker([1.5, 1.5]);



		group.addLayers([marker, marker2]);

		map.addLayer(group);



		expect(marker._icon).to.be(undefined);

		expect(marker2._icon).to.be(undefined);



		group.zoomToShowLayer(marker);

		//Run the the animation

		clock.tick(1000);



		expect(marker._icon).to.not.be(undefined);

		expect(marker._icon).to.not.be(null);

		expect(marker2._icon).to.not.be(undefined);

		expect(marker2._icon).to.not.be(null);



		group.addLayers([marker3]);

		//Run the the animation

		clock.tick(1000);



		expect(marker._icon).to.be(null);

		expect(marker2._icon).to.be(null);

		expect(marker3._icon).to.be(undefined);

		expect(marker3.__parent._icon).to.not.be(undefined);

		expect(marker3.__parent._icon).to.not.be(null);

		expect(marker3.__parent._icon.innerText.trim()).to.equal('3');



		clock.restore();

		clock = null;

	});

});

