diff --git a/test/modules/multi-image.js b/test/modules/multi-image.js
index 4cbd5211..1dc9cbca 100644
--- a/test/modules/multi-image.js
+++ b/test/modules/multi-image.js
@@ -217,7 +217,7 @@
             var firstImage = viewer.world.getItemAt(0);
             firstImage.addHandler('fully-loaded-change', function() {
                 var imageData = viewer.drawer.context.getImageData(0, 0,
-                    500 * OpenSeadragon.pixelDensityRatio, 500 * density);
+                    500 * density, 500 * density);
 
                 // Pixel 250,250 will be in the hole of the A
                 var expectedVal = getPixelValue(imageData, 250 * density, 250 * density);
diff --git a/test/modules/tilesource.js b/test/modules/tilesource.js
index 59d8b77f..71fb053d 100644
--- a/test/modules/tilesource.js
+++ b/test/modules/tilesource.js
@@ -1,32 +1,32 @@
 /* global module, ok, equal, start, test, testLog, Util */
 (function() {
-    
+
     module('TileSource', {
         setup: function() {
             testLog.reset();
         }
     });
-    
-    
+
+
     test("should set sane tile size defaults", function() {
         var source = new OpenSeadragon.TileSource();
-        
+
         equal(source.getTileWidth(), 0, "getTileWidth() should return 0 if not provided a size");
         equal(source.getTileHeight(), 0, "getTileHeight() should return 0 if not provided a size");
     });
-    
+
     test("providing tileSize", function(){
         var tileSize = 256,
             source = new OpenSeadragon.TileSource({
                 tileSize: tileSize
             });
-        
+
         equal(source.tileSize, undefined, "tileSize should not be set on the tileSource");
         equal(source.getTileWidth(), tileSize, "getTileWidth() should equal tileSize");
         equal(source.getTileHeight(), tileSize, "getTileHeight() should equal tileSize");
     });
-    
-    
+
+
     test("providing tileWidth and tileHeight", function(){
         var tileWidth = 256,
             tileHeight = 512,
@@ -34,7 +34,7 @@
                 tileWidth: tileWidth,
                 tileHeight: tileHeight
             });
-        
+
         equal(source._tileWidth, tileWidth, "tileWidth option should set _tileWidth");
         equal(source._tileHeight, tileHeight, "tileHeight option should set _tileHeight");
         equal(source.tileWidth, undefined, "tileWidth should be renamed _tileWidth");
@@ -42,10 +42,49 @@
         equal(source.getTileWidth(), tileWidth, "getTileWidth() should equal tileWidth");
         equal(source.getTileHeight(), tileHeight, "getTileHeight() should equal tileHeight");
     });
-    
+
     test('getTileSize() deprecation', function() {
         var source = new OpenSeadragon.TileSource();
         Util.testDeprecation(source, 'getTileSize');
     });
 
+    test('getTileAtPoint', function() {
+        var tileSource = new OpenSeadragon.TileSource({
+            width: 1500,
+            height: 1000,
+            tileWidth: 200,
+            tileHeight: 150,
+            tileOverlap: 1,
+        });
+
+        equal(tileSource.maxLevel, 11, "The max level should be 11.");
+
+        function assertTileAtPoint(level, position, expected) {
+            var actual = tileSource.getTileAtPoint(level, position);
+            ok(actual.equals(expected), "The tile at level " + level +
+                ", position " + position.toString() +
+                " should be tile " + expected.toString() +
+                " got " + actual.toString());
+        }
+
+        assertTileAtPoint(11, new OpenSeadragon.Point(0, 0), new OpenSeadragon.Point(0, 0));
+        assertTileAtPoint(11, new OpenSeadragon.Point(0.5, 0.5), new OpenSeadragon.Point(3, 5));
+        assertTileAtPoint(11, new OpenSeadragon.Point(1, 10 / 15), new OpenSeadragon.Point(7, 6));
+
+        assertTileAtPoint(10, new OpenSeadragon.Point(0, 0), new OpenSeadragon.Point(0, 0));
+        assertTileAtPoint(10, new OpenSeadragon.Point(0.5, 0.5), new OpenSeadragon.Point(1, 2));
+        assertTileAtPoint(10, new OpenSeadragon.Point(1, 10 / 15), new OpenSeadragon.Point(3, 3));
+
+        assertTileAtPoint(9, new OpenSeadragon.Point(0, 0), new OpenSeadragon.Point(0, 0));
+        assertTileAtPoint(9, new OpenSeadragon.Point(0.5, 0.5), new OpenSeadragon.Point(0, 1));
+        assertTileAtPoint(9, new OpenSeadragon.Point(1, 10 / 15), new OpenSeadragon.Point(1, 1));
+
+        // For all other levels, there is only one tile.
+        for (var level = 8; level >= 0; level--) {
+            assertTileAtPoint(level, new OpenSeadragon.Point(0, 0), new OpenSeadragon.Point(0, 0));
+            assertTileAtPoint(level, new OpenSeadragon.Point(0.5, 0.5), new OpenSeadragon.Point(0, 0));
+            assertTileAtPoint(level, new OpenSeadragon.Point(1, 10 / 15), new OpenSeadragon.Point(0, 0));
+        }
+    });
+
 }());