From 304b61f8f8d37fe582b2f927118434147f5e16c8 Mon Sep 17 00:00:00 2001
From: euzuro <euzuro@metacarta.com>
Date: Thu, 6 Jul 2006 13:04:04 +0000
Subject: [PATCH] add tests for Layer.Grid

git-svn-id: http://svn.openlayers.org/trunk/openlayers@903 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
---
 tests/list-tests.html      |   1 +
 tests/test_Layer_Grid.html | 211 +++++++++++++++++++++++++++++++++++++
 2 files changed, 212 insertions(+)
 create mode 100644 tests/test_Layer_Grid.html
diff --git a/tests/list-tests.html b/tests/list-tests.html
index a78d5dc17c..02e89abf8e 100644
--- a/tests/list-tests.html
+++ b/tests/list-tests.html
@@ -11,6 +11,7 @@
     <li>test_Util.html</li>
     <li>test_Layer.html</li>
     <li>test_Layer_HTTPRequest.html</li>
+    <li>test_Layer_Grid.html</li>
     <li>test_Layer_Markers.html</li>
     <li>test_Layer_Text.html</li>
     <li>test_Layer_GeoRSS.html</li>
diff --git a/tests/test_Layer_Grid.html b/tests/test_Layer_Grid.html
new file mode 100644
index 0000000000..345106ad02
--- /dev/null
+++ b/tests/test_Layer_Grid.html
@@ -0,0 +1,211 @@
+<html>
+<head>
+  <script src="../lib/OpenLayers.js"></script>
+  <script type="text/javascript"><!--
+    var isMozilla = (navigator.userAgent.indexOf("compatible") == -1);
+    var layer; 
+
+    var name = 'Test Layer';
+    var url = "http://octo.metacarta.com/cgi-bin/mapserv";
+    var params = { map: '/mapdata/vmap_wms.map', 
+                   layers: 'basic', 
+                   format: 'image/png'};
+
+    /**
+     *  NOTE TO READER:
+     * 
+     *    Some of the tests on the Grid class actually use the WMS class. 
+     *    This is because WMS is a subclass of Grid and it implements the 
+     *    core functions which are necessary to test the tile-generation 
+     *    mechanism. 
+     * 
+     */
+
+
+    function test_01_Layer_Grid_constructor (t) {
+        t.plan( 1 );
+                       
+        layer = new OpenLayers.Layer.Grid(name, url, params, null);
+        t.ok( layer instanceof OpenLayers.Layer.Grid, "returns OpenLayers.Layer.Grid object" );
+    }
+
+
+    function test_02_Layer_Grid_inittiles (t) {
+        t.plan( 2 );
+        var map = new OpenLayers.Map($('map'));
+        layer = new OpenLayers.Layer.WMS(name, url, params);
+        map.addLayer(layer);
+        map.setCenter(new OpenLayers.LonLat(0,0),5);
+        t.eq( layer.grid.length, 4, "Grid rows is correct." );
+        t.eq( layer.grid[0].length, 2, "Grid cols is correct." );
+        
+    }
+
+    function test_03_Layer_Grid_clearTiles (t) {
+        t.plan( 2 );
+        var map = new OpenLayers.Map('map');
+        layer = new OpenLayers.Layer.WMS(name, url, params);
+        map.addLayer(layer);
+
+        map.setCenter(new OpenLayers.LonLat(0,0));
+
+        layer = new OpenLayers.Layer.WMS(name, url, params);
+        map.addLayer(layer);
+
+        map.setCenter(new OpenLayers.LonLat(0,0), 5);
+
+        //grab a reference to one of the tiles
+        var tile = layer.grid[0][0];        
+
+        layer.clearGrid();
+
+        t.ok( layer.grid != null, "layer.grid does not get nullified" );
+        t.ok( (tile.layer == null) &&
+              (tile.bounds == null) &&
+              (tile.size == null), "tiles appropriately destroyed")
+    }
+
+
+    function test_04_Layer_Grid_getGridBounds(t) {
+        t.plan( 1 );
+
+        layer = new OpenLayers.Layer.WMS(name, url, params);
+
+        var bl = { bounds: new OpenLayers.Bounds(1,2,0,0)};
+        var tr = { bounds: new OpenLayers.Bounds(0,0,3,4)};
+        layer.grid = [ [6, tr], 
+                       [bl, 7]];
+
+        var bounds = layer.getGridBounds();
+    
+        var testBounds = new OpenLayers.Bounds(1,2,3,4);
+        
+        t.ok( bounds.equals(testBounds), "getGridBounds() returns correct bounds")
+    }
+
+    function test_05_Layer_Grid_getResolution(t) {
+        t.plan( 1 );
+
+        var map = new OpenLayers.Map('map');
+        layer = new OpenLayers.Layer.WMS(name, url, params);
+        map.addLayer(layer);
+
+        map.zoom = 5;
+
+        t.eq( layer.getResolution(), 0.0439453125, "getResolution() returns correct value");
+    }
+
+    function test_06_Layer_Grid_getZoomForExtent(t) {
+        t.plan( 2 );
+        var bounds, zoom;
+
+        var map = new OpenLayers.Map('map');
+        layer = new OpenLayers.Layer.WMS(name, url, params);
+        map.addLayer(layer);
+
+        bounds = new OpenLayers.Bounds(10,10,12,12);
+        zoom = layer.getZoomForExtent(bounds);
+
+        t.eq( zoom, 8, "getZoomForExtent() returns correct value");
+
+        bounds = new OpenLayers.Bounds(10,10,100,100);
+        zoom = layer.getZoomForExtent(bounds);
+
+        t.eq( zoom, 3, "getZoomForExtent() returns correct value");
+    }   
+
+
+    /** THIS WOULD BE WHERE THE TESTS WOULD GO FOR 
+     *     
+     *    -moveTo
+     *    -insertColumn
+     *    -insertRow
+    
+    function test_07_Layer_Grid_moveTo(t) {
+    }
+
+    function test_08_Layer_Grid_insertColumn(t) {
+    }
+
+    function test_09_Layer_Grid_insertRow(t) {
+    }
+
+     * 
+     */
+
+    function test_10_Layer_Grid_clone(t) {
+        t.plan(4);
+        
+        var options = {tileSize: new OpenLayers.Size(500,50)};
+        var map = new OpenLayers.Map('map', options);
+        layer = new OpenLayers.Layer.Grid(name, url, params);
+        map.addLayer(layer);
+
+        layer.grid = [ [6, 7], 
+                       [8, 9]];
+
+        var clone = layer.clone();
+
+        t.ok( clone.grid == null, "clone does not copy grid");
+
+        t.ok( clone.tileSize.equals(layer.tileSize), "tileSize correctly cloned");
+
+        layer.tileSize.w += 40;
+
+        t.eq( clone.tileSize.w, 500, "changing layer.tileSize does not change clone.tileSize -- a fresh copy was made, not just copied reference");
+
+        t.eq( clone.alpha, layer.alpha, "alpha copied correctly");
+    }
+
+    function test_11_Layer_Grid_setMap(t) {
+
+        t.plan(2);
+        
+        var options = {tileSize: new OpenLayers.Size(500,50)};
+        var map = new OpenLayers.Map('map', options);
+        layer = new OpenLayers.Layer.Grid(name, url, params);
+
+
+        layer.setMap(map);
+        
+        t.ok( layer.tileSize != null, "tileSize has been set");
+        t.ok( (layer.tileSize.h == 50) && (layer.tileSize.w == 500), "tileSize has been set correctly");
+    }
+
+
+    function test_99_Layer_Grid_destroy (t) {
+
+        t.plan( 4 );
+
+        var map = new OpenLayers.Map('map');
+        layer = new OpenLayers.Layer.Grid(name, url, params);
+        map.addLayer(layer);
+        layer.destroy();
+        t.eq( layer.grid, null, "layer.grid is null after destroy" );
+        t.eq( layer.alpha, null, "layer.alpha is null after destroy" );
+        t.eq( layer.tileSize, null, "layer.tileSize is null after destroy" );
+
+
+    //test with tile creation
+        layer = new OpenLayers.Layer.WMS(name, url, params);
+        map.addLayer(layer);
+
+        map.setCenter(new OpenLayers.LonLat(0,0), 5);
+
+        //grab a reference to one of the tiles
+        var tile = layer.grid[0][0];        
+
+        layer.destroy();
+
+        t.ok( (tile.layer == null) &&
+              (tile.bounds == null) &&
+              (tile.size == null), "tiles appropriately destroyed")
+    }
+    
+       // -->
+  </script>
+</head>
+<body>
+<div id="map" style="width:500px;height:550px;display:none"></div>
+</body>
+</html>
