391 lines
9.2 KiB
JavaScript
391 lines
9.2 KiB
JavaScript
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describe('GridLayer', function () {
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var div, map;
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beforeEach(function () {
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div = document.createElement('div');
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div.style.width = '800px';
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div.style.height = '600px';
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div.style.visibility = 'hidden';
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document.body.appendChild(div);
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map = L.map(div);
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});
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afterEach(function () {
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document.body.removeChild(div);
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});
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describe('#redraw', function () {
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it('can be called before map.setView', function () {
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var grid = L.gridLayer().addTo(map);
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expect(grid.redraw()).to.equal(grid);
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});
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});
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describe('#setOpacity', function () {
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it('can be called before map.setView', function () {
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var grid = L.gridLayer().addTo(map);
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expect(grid.setOpacity(0.5)).to.equal(grid);
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});
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});
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it('positions tiles correctly with wrapping and bounding', function () {
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map.setView([0, 0], 1);
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var tiles = [];
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var grid = L.gridLayer();
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grid.createTile = function (coords) {
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var tile = document.createElement('div');
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tiles.push({coords: coords, tile: tile});
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return tile;
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};
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map.addLayer(grid);
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var loaded = {};
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for (var i = 0; i < tiles.length; i++) {
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var coords = tiles[i].coords,
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pos = L.DomUtil.getPosition(tiles[i].tile);
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loaded[pos.x + ':' + pos.y] = [coords.x, coords.y];
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}
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expect(loaded).to.eql({
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'144:0': [0, 0],
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'400:0': [1, 0],
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'144:256': [0, 1],
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'400:256': [1, 1],
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'-112:0': [1, 0],
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'656:0': [0, 0],
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'-112:256': [1, 1],
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'656:256': [0, 1]
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});
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});
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describe('tile pyramid', function () {
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var clock;
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beforeEach(function () {
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clock = sinon.useFakeTimers();
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});
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afterEach(function () {
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clock.restore();
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});
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it('removes tiles for unused zoom levels', function (done) {
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map.remove();
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map = L.map(div, {fadeAnimation: false});
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map.setView([0, 0], 1);
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var grid = L.gridLayer();
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var tiles = {};
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grid.createTile = function (coords) {
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tiles[grid._tileCoordsToKey(coords)] = true;
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return document.createElement('div');
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};
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grid.on('tileunload', function (e) {
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delete tiles[grid._tileCoordsToKey(e.coords)];
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if (Object.keys(tiles).length === 1) {
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expect(Object.keys(tiles)).to.eql(['0:0:0']);
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done();
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}
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});
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map.addLayer(grid);
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map.setZoom(0, {animate: false});
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clock.tick(250);
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});
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});
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describe('#createTile', function () {
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beforeEach(function () {
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// Simpler sizes to test.
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div.style.width = '512px';
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div.style.height = '512px';
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});
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afterEach(function () {
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div.style.width = '800px';
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div.style.height = '600px';
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});
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// Passes on Firefox, but fails on phantomJS: done is never called.
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xit('only creates tiles for visible area on zoom in', function (done) {
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map.remove();
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map = L.map(div);
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map.setView([0, 0], 10);
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var grid = L.gridLayer(),
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count = 0,
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loadCount = 0;
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grid.createTile = function (coords) {
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count++;
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return document.createElement('div');
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};
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var onLoad = function (e) {
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expect(count).to.eql(4);
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count = 0;
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loadCount++;
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if (loadCount === 1) { // On layer add.
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map.zoomIn();
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} else { // On zoom in.
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done();
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}
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};
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grid.on('load', onLoad);
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map.addLayer(grid);
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});
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});
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describe("#onAdd", function () {
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it('is called after zoomend on first map load', function () {
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var layer = L.gridLayer().addTo(map);
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var onAdd = layer.onAdd,
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onAddSpy = sinon.spy();
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layer.onAdd = function () {
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onAdd.apply(this, arguments);
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onAddSpy();
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};
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var onReset = sinon.spy();
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map.on('zoomend', onReset);
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map.setView([0, 0], 0);
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expect(onReset.calledBefore(onAddSpy)).to.be.ok();
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});
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});
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describe("#getMaxZoom, #getMinZoom", function () {
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describe("when a tilelayer is added to a map with no other layers", function () {
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it("has the same zoomlevels as the tilelayer", function () {
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var maxZoom = 10,
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minZoom = 5;
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map.setView([0, 0], 1);
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L.gridLayer({
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maxZoom: maxZoom,
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minZoom: minZoom
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}).addTo(map);
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expect(map.getMaxZoom()).to.be(maxZoom);
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expect(map.getMinZoom()).to.be(minZoom);
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});
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});
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describe("accessing a tilelayer's properties", function () {
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it('provides a container', function () {
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map.setView([0, 0], 1);
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var layer = L.gridLayer().addTo(map);
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expect(layer.getContainer()).to.be.ok();
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});
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});
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describe("when a tilelayer is added to a map that already has a tilelayer", function () {
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it("has its zoomlevels updated to fit the new layer", function () {
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map.setView([0, 0], 1);
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L.gridLayer({minZoom: 10, maxZoom: 15}).addTo(map);
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expect(map.getMinZoom()).to.be(10);
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expect(map.getMaxZoom()).to.be(15);
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L.gridLayer({minZoom: 5, maxZoom: 10}).addTo(map);
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expect(map.getMinZoom()).to.be(5); // changed
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expect(map.getMaxZoom()).to.be(15); // unchanged
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L.gridLayer({minZoom: 10, maxZoom: 20}).addTo(map);
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expect(map.getMinZoom()).to.be(5); // unchanged
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expect(map.getMaxZoom()).to.be(20); // changed
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L.gridLayer({minZoom: 0, maxZoom: 25}).addTo(map);
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expect(map.getMinZoom()).to.be(0); // changed
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expect(map.getMaxZoom()).to.be(25); // changed
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});
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});
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describe("when a tilelayer is removed from a map", function () {
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it("has its zoomlevels updated to only fit the layers it currently has", function () {
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var tiles = [
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L.gridLayer({minZoom: 10, maxZoom: 15}).addTo(map),
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L.gridLayer({minZoom: 5, maxZoom: 10}).addTo(map),
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L.gridLayer({minZoom: 10, maxZoom: 20}).addTo(map),
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L.gridLayer({minZoom: 0, maxZoom: 25}).addTo(map)
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];
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map.whenReady(function () {
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expect(map.getMinZoom()).to.be(0);
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expect(map.getMaxZoom()).to.be(25);
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map.removeLayer(tiles[0]);
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expect(map.getMinZoom()).to.be(0);
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expect(map.getMaxZoom()).to.be(25);
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map.removeLayer(tiles[3]);
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expect(map.getMinZoom()).to.be(5);
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expect(map.getMaxZoom()).to.be(20);
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map.removeLayer(tiles[2]);
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expect(map.getMinZoom()).to.be(5);
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expect(map.getMaxZoom()).to.be(10);
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map.removeLayer(tiles[1]);
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expect(map.getMinZoom()).to.be(0);
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expect(map.getMaxZoom()).to.be(Infinity);
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});
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});
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});
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});
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describe("number of tiles loaded in synchronous grid", function () {
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var clock, grid, counts;
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beforeEach(function () {
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clock = sinon.useFakeTimers();
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grid = L.gridLayer({
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attribution: 'Grid Layer',
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// tileSize: L.point(150, 80)
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tileSize: L.point(256, 256)
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});
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grid.createTile = function (coords /* , done*/) {
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var tile = document.createElement('div');
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tile.innerHTML = [coords.x, coords.y, coords.z].join(', ');
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tile.style.border = '2px solid red';
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// tile.style.background = 'white';
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// console.log('Creating new tile: ', [coords.x, coords.y, coords.z].join(', '));
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// test async
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// setTimeout(function () {
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// done(null, tile);
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// }, Math.random() * 100);
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return tile;
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};
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counts = {
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tileload: 0,
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tileerror: 0,
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tileloadstart: 0,
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tileunload: 0
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};
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grid.on('tileload tileunload tileerror tileloadstart', function (ev) {
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// console.log(ev.type);
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counts[ev.type]++;
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});
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// grid.on('tileunload', function (ev) {
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// console.log(ev.type, ev.coords, counts);
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// });
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map.options.fadeAnimation = false;
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});
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afterEach(function () {
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clock.restore();
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grid.off();
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grid = undefined;
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counts = undefined;
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});
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it("Loads 8 256x256px tiles @800x600px zoom 1", function (done) {
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grid.on('load', function () {
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expect(counts.tileloadstart).to.be(8);
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expect(counts.tileload).to.be(8);
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expect(counts.tileunload).to.be(0);
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done();
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});
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map.addLayer(grid).setView([0, 0], 1);
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clock.tick(250);
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});
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it("Loads 5 256x256px tiles @800x600px zoom 0", function (done) {
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grid.on('load', function () {
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expect(counts.tileloadstart).to.be(5);
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expect(counts.tileload).to.be(5);
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expect(counts.tileunload).to.be(0);
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done();
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});
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map.addLayer(grid).setView([0, 0], 0);
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clock.tick(250);
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});
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//
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it("Loads 16 256x256px tiles @800x600px zoom 10", function (done) {
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grid.on('load', function () {
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expect(counts.tileloadstart).to.be(16);
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expect(counts.tileload).to.be(16);
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expect(counts.tileunload).to.be(0);
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grid.off();
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done();
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});
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map.addLayer(grid).setView([0, 0], 10);
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clock.tick(250);
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});
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//
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it("Loads 48, unloads 32 256x256px tiles @800x600px zoom 1", function (done) {
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// console.log(counts);
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// Event handler just for logging
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grid.on('tileload tileunload', function (ev) {
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var pending = 0;
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for (var key in grid._tiles) {
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if (!grid._tiles[key].loaded) { pending++; }
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}
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console.log(ev.type + ': ', ev.coords, grid._loading, pending);
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console.log(counts);
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});
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function firstTest() {
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console.log('loaded at zoom 10');
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console.log(counts);
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expect(counts.tileloadstart).to.be(16);
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expect(counts.tileload).to.be(16);
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expect(counts.tileunload).to.be(0);
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grid.off();
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grid.on('load', secondTest);
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map.setZoom(11);
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clock.tick(250);
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}
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function secondTest() {
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console.log('loaded at zoom 11');
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console.log(counts);
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expect(counts.tileloadstart).to.be(32);
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expect(counts.tileload).to.be(32);
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expect(counts.tileunload).to.be(16);
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done();
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}
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grid.on('load', firstTest);
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map.addLayer(grid).setView([0, 0], 10);
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clock.tick(250);
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});
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});
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});
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