fixes a bug where an explicit tileSize was not being honored

leaflet-iiif.js

@@ -124,7 +124,9 @@ L.TileLayer.Iiif = L.TileLayer.extend({
         _this._setQuality();
 
         // Unless an explicit tileSize is set, use a preferred tileSize
-        if (!_this.explicitTileSize) {
+        if (!_this._explicitTileSize) {
+          // Set the default first
+          _this.options.tileSize = 256;
           if (data.tiles) {
             // Image API 2.0 Case
             _this.options.tileSize = data.tiles[0].width;

spec/LTileLayerIiifSpec.js

@@ -129,4 +129,52 @@ describe('L.TileLayer.Iiif', function() {
       });
     });
   });
+
+  describe('tileSize', function() {
+    var iiifLayer;
+
+    afterEach(function() {
+      iiifLayer.off('load');
+    });
+
+    describe('when not specified', function() {
+      it('uses the tileSize from info.json v2', function(done) {
+        iiifLayer = L.tileLayer.iiif('http://localhost:9876/base/fixtures/mlk/info.json');
+        map.addLayer(iiifLayer);
+        iiifLayer.on('load', function() {
+          expect(iiifLayer.options.tileSize).toBe(1024);
+          done();
+        });
+      });
+      it('uses the tileSize from info.json v1', function(done) {
+        iiifLayer = L.tileLayer.iiif('http://localhost:9876/base/fixtures/statue_info.json');
+        map.addLayer(iiifLayer);
+        iiifLayer.on('load', function() {
+          expect(iiifLayer.options.tileSize).toBe(1024);
+          done();
+        });
+      });
+      it('uses default tileSize (not specified in info.json)', function(done) {
+        iiifLayer = L.tileLayer.iiif('http://localhost:9876/base/fixtures/edge_case/info.json');
+        map.addLayer(iiifLayer);
+        iiifLayer.on('load', function() {
+          expect(iiifLayer.options.tileSize).toBe(256);
+          done();
+        });
+      });
+    });
+    describe('when specified', function() {
+      it('uses the explicitly defined one', function(done) {
+        iiifLayer = L.tileLayer.iiif('http://localhost:9876/base/fixtures/mlk/info.json', {
+          tileSize: 512 
+        });
+        map.addLayer(iiifLayer);
+        iiifLayer.on('load', function() {
+          expect(iiifLayer.options.tileSize).toBe(512);
+          done();
+        });
+      });
+    });
+
+  });
 });

spec/fixtures/edge_case/info.json

@@ -0,0 +1,21 @@
+{
+  "@context": "http://library.stanford.edu/iiif/image-api/1.1/context.json",
+  "@id": "http://ids.lib.harvard.edu/ids/iiif/25286610",
+  "width": 4132,
+  "height": 8176,
+  "scale_factors": [
+    1,
+    2,
+    4,
+    8,
+    16,
+    32
+  ],
+  "formats": [
+    "jpg"
+  ],
+  "qualities": [
+    "native"
+  ],
+  "profile": "http://library.stanford.edu/iiif/image-api/1.1/compliance.html#level1"
+}