# Code coverage report for ./suites/layer/TileLayerSpec.js

## Statements: 72.55% (37 / 51) Branches: 100% (0 / 0) Functions: 91.67% (11 / 12) Lines: 72.55% (37 / 51)

All files » ./suites/layer/ » TileLayerSpec.js

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    describe('TileLayer', function () {
    	var tileUrl = '';

    	describe("#getMaxZoom, #getMinZoom", function () {
    		var map;
    		beforeEach(function () {
    			map = L.map(document.createElement('div'));
    		});
    		describe("when a tilelayer is added to a map with no other layers", function () {
    			it("has the same zoomlevels as the tilelayer", function () {
    				var maxZoom = 10,
    					minZoom = 5;
    					map.setView([0, 0], 1);

    					L.tileLayer(tileUrl, {
    						maxZoom: maxZoom,
    						minZoom: minZoom
    					}).addTo(map);
    				expect(map.getMaxZoom()).to.be(maxZoom);
    				expect(map.getMinZoom()).to.be(minZoom);
    			});
    		});

    		describe("accessing a tilelayer's properties", function () {
    			it('provides a container', function () {
    				map.setView([0, 0], 1);

    				var layer = L.tileLayer(tileUrl).addTo(map);
    				expect(layer.getContainer()).to.be.ok();
    			});
    		});

    		describe("when a tilelayer is added to a map that already has a tilelayer", function () {
    			it("has its zoomlevels updated to fit the new layer", function () {
    				map.setView([0, 0], 1);

    				L.tileLayer(tileUrl, { minZoom:10, maxZoom: 15 }).addTo(map);
    				expect(map.getMinZoom()).to.be(10);
    				expect(map.getMaxZoom()).to.be(15);

    				L.tileLayer(tileUrl, { minZoom:5, maxZoom: 10 }).addTo(map);
    				expect(map.getMinZoom()).to.be(5);  // changed
    				expect(map.getMaxZoom()).to.be(15); // unchanged

    				L.tileLayer(tileUrl,{ minZoom:10, maxZoom: 20 }).addTo(map);
    				expect(map.getMinZoom()).to.be(5);  // unchanged
    				expect(map.getMaxZoom()).to.be(20); // changed

    				L.tileLayer(tileUrl, { minZoom:0, maxZoom: 25 }).addTo(map);
    				expect(map.getMinZoom()).to.be(0); // changed
    				expect(map.getMaxZoom()).to.be(25); // changed
    			});
    		});
    		describe("when a tilelayer is removed from a map", function () {
    			it("has its zoomlevels updated to only fit the layers it currently has", function () {
    				var tiles = [  L.tileLayer(tileUrl, { minZoom:10, maxZoom: 15 }).addTo(map),
    							   L.tileLayer(tileUrl, { minZoom:5, maxZoom: 10 }).addTo(map),
    							   L.tileLayer(tileUrl, { minZoom:10, maxZoom: 20 }).addTo(map),
    							   L.tileLayer(tileUrl, { minZoom:0, maxZoom: 25 }).addTo(map)
    							];
    				map.whenReady(function() {
    					expect(map.getMinZoom()).to.be(0);
    					expect(map.getMaxZoom()).to.be(25);

    					map.removeLayer(tiles[0]);
    					expect(map.getMinZoom()).to.be(0);
    					expect(map.getMaxZoom()).to.be(25);

    					map.removeLayer(tiles[3]);
    					expect(map.getMinZoom()).to.be(5);
    					expect(map.getMaxZoom()).to.be(20);

    					map.removeLayer(tiles[2]);
    					expect(map.getMinZoom()).to.be(5);
    					expect(map.getMaxZoom()).to.be(10);

    					map.removeLayer(tiles[1]);
    					expect(map.getMinZoom()).to.be(0);
    					expect(map.getMaxZoom()).to.be(Infinity);
    				});
    			});
    		});
    	});
    });