<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <script>
      /**
      * Because browsers that implement requestAnimationFrame may not execute
      * animation functions while a window is not displayed (e.g. in a hidden
      * iframe as in these tests), we mask the native implementations here.  The
      * native requestAnimationFrame functionality is tested in Util.html and
      * in PanZoom.html (where a popup is opened before panning).  The panTo tests
      * here will test the fallback setTimeout implementation for animation.
      */
      window.requestAnimationFrame = 
          window.webkitRequestAnimationFrame =
          window.mozRequestAnimationFrame =
          window.oRequestAnimationFrame =
          window.msRequestAnimationFrame = null;
  </script>
  <script src="../OLLoader.js"></script>
  <script type="text/javascript">

    var map, layer;
    function setUp() {
        layer = new OpenLayers.Layer.UTFGrid({
            url: "../data/utfgrid/world_utfgrid/${z}/${x}/${y}.json",
            isBaseLayer: true, 
            utfgridResolution: 4
        });
        map = new OpenLayers.Map({
            div: "map",
            projection: "EPSG:900913",
            layers: [layer],
            center: [0, 0],
            zoom: 1,
            tileManager: null
        });
    }
    
    function tearDown() {
        map.destroy();
        map = null;
        layer = null;
    }

    function test_constructor(t) {
        t.plan(4);
        
        var layer = new OpenLayers.Layer.UTFGrid({
            name: "foo",
            url: "path/to/tiles/${z}/${x}/${y}",
            utfgridResolution: 8
        });
        t.ok(layer instanceof OpenLayers.Layer.UTFGrid, "utfgrid instance");
        t.eq(layer.name, "foo", "layer name");
        t.eq(layer.url, "path/to/tiles/${z}/${x}/${y}", "layer url");
        t.eq(layer.utfgridResolution, 8, "layer utfgridResolution");

        layer.destroy();

    }

    function test_createBackBuffer(t) {
      t.plan(1);
      setUp();

      var got;
      try {
        got = layer.createBackBuffer();
      } catch (e) {
        got = e;
      } finally {
        tearDown();
      }
      t.eq(got, undefined, "createBackBuffer returns undefined");
    }
    
    function test_clone(t) {
        t.plan(3);
        setUp();
        
        var clone = layer.clone();
        t.ok(layer instanceof OpenLayers.Layer.UTFGrid, "utfgrid instance");
        t.eq(layer.url, "../data/utfgrid/world_utfgrid/${z}/${x}/${y}.json", "layer url");
        t.eq(layer.utfgridResolution, 4, "layer utfgridResolution");
        clone.destroy();
        
        tearDown();
    }
    
    function test_getFeatureInfo(t) {
        t.plan(2);
        setUp();
                
        // wait for tile loading to finish
        t.delay_call(0.5, function() {
            var loc = new OpenLayers.LonLat(-110, 45).transform("EPSG:4326", "EPSG:900913");
            var info = layer.getFeatureInfo(loc);
            
            t.eq(info.id, "207", "feature id");
            t.eq(info.data, {POP2005: 299846449, NAME: "United States"}, "feature data");
            
            tearDown();
        });
        
    }

    function test_getFeatureId(t) {
        t.plan(2);
        setUp();

        // wait for tile loading to finish
        t.delay_call(0.5, function() {
            var ca = new OpenLayers.LonLat(-110, 55).transform("EPSG:4326", "EPSG:900913");
            var ru = new OpenLayers.LonLat(90, 75).transform("EPSG:4326", "EPSG:900913");
            
            t.eq(layer.getFeatureId(ca), "24", "feature id for ca");
            t.eq(layer.getFeatureId(ru), "245", "feature id for ru");
            
            tearDown();
        });
        
    }

  </script>
</head>
<body>
<div id="map" style="height: 256px; width: 512px"></div>
</body>
</html>

