Andreas Hocevar
a116878a57
The addition of full extent tile ranges also allows us to simplify wrapX handling for tile layers. By limiting wrapX to true and false as possible values, we can remove a lot of guessing logic.
247 lines
6.8 KiB
JavaScript
247 lines
6.8 KiB
JavaScript
goog.provide('ol.test.source.TileSource');
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describe('ol.source.Tile', function() {
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describe('constructor', function() {
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it('returns a tile source', function() {
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var source = new ol.source.Tile({
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projection: ol.proj.get('EPSG:4326')
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});
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expect(source).to.be.a(ol.source.Source);
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expect(source).to.be.a(ol.source.Tile);
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});
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});
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describe('#forEachLoadedTile()', function() {
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var callback;
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beforeEach(function() {
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callback = sinon.spy();
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});
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it('does not call the callback if no tiles are loaded', function() {
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var source = new ol.test.source.TileMock({});
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var grid = source.getTileGrid();
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var extent = [-180, -180, 180, 180];
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var zoom = 3;
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var range = grid.getTileRangeForExtentAndZ(extent, zoom);
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source.forEachLoadedTile(zoom, range, callback);
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expect(callback.callCount).to.be(0);
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});
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it('does not call getTile() if no tiles are loaded', function() {
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var source = new ol.test.source.TileMock({});
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sinon.spy(source, 'getTile');
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var grid = source.getTileGrid();
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var extent = [-180, -180, 180, 180];
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var zoom = 3;
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var range = grid.getTileRangeForExtentAndZ(extent, zoom);
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source.forEachLoadedTile(zoom, range, callback);
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expect(source.getTile.callCount).to.be(0);
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source.getTile.restore();
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});
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it('calls callback for each loaded tile', function() {
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var source = new ol.test.source.TileMock({
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'1/0/0': ol.TileState.LOADED,
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'1/0/1': ol.TileState.LOADED,
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'1/1/0': ol.TileState.LOADING,
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'1/1/1': ol.TileState.LOADED
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});
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var zoom = 1;
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var range = new ol.TileRange(0, 1, 0, 1);
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source.forEachLoadedTile(zoom, range, callback);
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expect(callback.callCount).to.be(3);
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});
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it('returns true if range is fully loaded', function() {
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// a source with no loaded tiles
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var source = new ol.test.source.TileMock({
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'1/0/0': ol.TileState.LOADED,
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'1/0/1': ol.TileState.LOADED,
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'1/1/0': ol.TileState.LOADED,
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'1/1/1': ol.TileState.LOADED
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});
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var zoom = 1;
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var range = new ol.TileRange(0, 1, 0, 1);
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var covered = source.forEachLoadedTile(zoom, range, function() {
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return true;
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});
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expect(covered).to.be(true);
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});
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it('returns false if range is not fully loaded', function() {
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// a source with no loaded tiles
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var source = new ol.test.source.TileMock({
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'1/0/0': ol.TileState.LOADED,
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'1/0/1': ol.TileState.LOADED,
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'1/1/0': ol.TileState.LOADING,
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'1/1/1': ol.TileState.LOADED
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});
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var zoom = 1;
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var range = new ol.TileRange(0, 1, 0, 1);
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var covered = source.forEachLoadedTile(zoom, range, function() {
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return true;
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});
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expect(covered).to.be(false);
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});
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it('allows callback to override loaded check', function() {
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// a source with no loaded tiles
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var source = new ol.test.source.TileMock({
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'1/0/0': ol.TileState.LOADED,
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'1/0/1': ol.TileState.LOADED,
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'1/1/0': ol.TileState.LOADED,
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'1/1/1': ol.TileState.LOADED
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});
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var zoom = 1;
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var range = new ol.TileRange(0, 1, 0, 1);
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var covered = source.forEachLoadedTile(zoom, range, function() {
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return false;
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});
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expect(covered).to.be(false);
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});
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});
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describe('#getTileCoordForTileUrlFunction()', function() {
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it('returns the expected tile coordinate - {wrapX: true}', function() {
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var tileSource = new ol.source.Tile({
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projection: 'EPSG:3857',
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wrapX: true
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});
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var tileCoord = tileSource.getTileCoordForTileUrlFunction([6, -31, 22]);
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expect(tileCoord).to.eql([6, 33, 22]);
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tileCoord = tileSource.getTileCoordForTileUrlFunction([6, 33, 22]);
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expect(tileCoord).to.eql([6, 33, 22]);
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tileCoord = tileSource.getTileCoordForTileUrlFunction([6, 97, 22]);
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expect(tileCoord).to.eql([6, 33, 22]);
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});
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it('returns the expected tile coordinate - {wrapX: false}', function() {
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var tileSource = new ol.source.Tile({
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projection: 'EPSG:3857',
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wrapX: false
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});
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var tileCoord = tileSource.getTileCoordForTileUrlFunction([6, -31, 22]);
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expect(tileCoord).to.eql(null);
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tileCoord = tileSource.getTileCoordForTileUrlFunction([6, 33, 22]);
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expect(tileCoord).to.eql([6, 33, 22]);
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tileCoord = tileSource.getTileCoordForTileUrlFunction([6, 97, 22]);
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expect(tileCoord).to.eql(null);
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});
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});
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});
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/**
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* Tile source for tests that uses a EPSG:4326 based grid with 4 resolutions and
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* 256x256 tiles.
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*
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* @constructor
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* @extends {ol.source.Tile}
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* @param {Object.<string, ol.TileState>} tileStates Lookup of tile key to
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* tile state.
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*/
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ol.test.source.TileMock = function(tileStates) {
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var tileGrid = new ol.tilegrid.TileGrid({
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resolutions: [360 / 256, 180 / 256, 90 / 256, 45 / 256],
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origin: [-180, -180],
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tileSize: 256
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});
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goog.base(this, {
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projection: ol.proj.get('EPSG:4326'),
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tileGrid: tileGrid
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});
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for (var key in tileStates) {
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this.tileCache.set(key, new ol.Tile(key.split('/'), tileStates[key]));
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}
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};
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goog.inherits(ol.test.source.TileMock, ol.source.Tile);
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/**
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* @inheritDoc
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*/
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ol.test.source.TileMock.prototype.getTile = function(z, x, y) {
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var key = this.getKeyZXY(z, x, y);
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if (this.tileCache.containsKey(key)) {
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return /** @type {!ol.Tile} */ (this.tileCache.get(key));
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} else {
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var tile = new ol.Tile(key, ol.TileState.IDLE);
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this.tileCache.set(key, tile);
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return tile;
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}
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};
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describe('ol.test.source.TileMock', function() {
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describe('constructor', function() {
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it('creates a tile source', function() {
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var source = new ol.test.source.TileMock({});
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expect(source).to.be.a(ol.source.Tile);
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expect(source).to.be.a(ol.test.source.TileMock);
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});
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});
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describe('#getTile()', function() {
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it('returns a tile with state based on constructor arg', function() {
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var source = new ol.test.source.TileMock({
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'0/0/0': ol.TileState.LOADED,
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'1/0/0': ol.TileState.LOADED
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});
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var tile;
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// check a loaded tile
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tile = source.getTile(0, 0, 0);
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expect(tile).to.be.a(ol.Tile);
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expect(tile.state).to.be(ol.TileState.LOADED);
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// check a tile that is not loaded
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tile = source.getTile(1, 0, -1);
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expect(tile).to.be.a(ol.Tile);
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expect(tile.state).to.be(ol.TileState.IDLE);
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// check another loaded tile
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tile = source.getTile(1, 0, 0);
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expect(tile).to.be.a(ol.Tile);
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expect(tile.state).to.be(ol.TileState.LOADED);
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});
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});
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});
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goog.require('goog.object');
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goog.require('ol.Tile');
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goog.require('ol.TileRange');
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goog.require('ol.TileState');
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goog.require('ol.proj');
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goog.require('ol.source.Source');
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goog.require('ol.source.Tile');
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goog.require('ol.tilegrid.TileGrid');
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