File: Util.html

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<html>
<head>
  <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
  <style>
    body {
        margin: 0;
        padding: 0;
    }
    #map {
        position: absolute;
        top:  1234px;
        left: 123px;
    }
    .test_getRenderedDimensions p{
        padding: 20px; 
    }
  </style>
  <script>
    var OpenLayers = [
        "OpenLayers/BaseTypes/Class.js",
        "OpenLayers/Util.js",
        "OpenLayers/BaseTypes.js",
        "OpenLayers/BaseTypes/Element.js",
        "OpenLayers/BaseTypes/LonLat.js",
        "OpenLayers/BaseTypes/Pixel.js",
        "OpenLayers/BaseTypes/Size.js",
        "OpenLayers/Lang.js",
        "OpenLayers/Console.js"
    ];
  </script>
  <script src="OLLoader.js"></script>
  <script src="Util_common.js"></script>
  <script type="text/javascript">
    var isMozilla = (navigator.userAgent.indexOf("compatible") == -1);
    var map; 

    function test_isElement(t) {
        t.plan(3);

        // set up
        var o;

        // tests
        o = {};
        t.eq(OpenLayers.Util.isElement(o), false,
             "isElement reports that {} isn't an Element");
        o = document.createElement("div");
        t.eq(OpenLayers.Util.isElement(o), true,
             "isElement reports that object returned by createElement is an Element");
        o = OpenLayers.Util.getElement("map");
        t.eq(OpenLayers.Util.isElement(o), true,
             "isElement reports that object returned by getElement is an Element");
    }
    
    function test_isArray(t) {
        t.plan(5);
        
        var a;
        
        a = null;
        t.eq(OpenLayers.Util.isArray(a), false, 
             "isArray reports 'null' isn't an Array");
        a = "Array";   
        t.eq(OpenLayers.Util.isArray(a), false, 
             "isArray reports \"Array\" isn't an Array");
        a = {};
        t.eq(OpenLayers.Util.isArray(a), false, 
             "isArray reports {} isn't an Array");
        a = [];
        t.eq(OpenLayers.Util.isArray(a), true, 
             "isArray reports [] is an Array");
        a = new Array();
        t.eq(OpenLayers.Util.isArray(a), true, 
             "isArray reports new Array() is an Array");
    }
    
    function test_iframe_isArray(t) {
        t.plan(3);
        // create an array in an iframe
        var iframe = document.createElement("iframe");
        document.body.appendChild(iframe);
        frames[frames.length-1].document.write(
            "<script>parent.testArray = [];<\/script>"
        );
        
        t.ok(!!testArray, "testArray created");
        t.ok(!(testArray instanceof Array), "instanceof check doesn't work");
        t.eq(OpenLayers.Util.isArray(testArray), true, "isArray works");
    }
    
    function test_Util_getImagesLocation (t) {
        t.plan( 1 );
        t.ok( OpenLayers.Util.getImagesLocation(), "../img/",
                    "getImagesLocation()" );
    }

    function test_Util_IndexOf(t) {
        t.plan( 3 );
        var array = new Array(1, "bar");
        t.eq(OpenLayers.Util.indexOf(array, 1), 0);
        t.eq(OpenLayers.Util.indexOf(array, "bar"), 1);
        t.eq(OpenLayers.Util.indexOf(array, "foo"), -1);
    }

    function test_Util_Array(t) {
        t.plan( 2 );

        var array = new Array(1,2,3,4,4,5);

        OpenLayers.Util.removeItem(array, 3);
        t.eq( array.toString(), "1,2,4,4,5", "Util.removeItem works on one element");    
        OpenLayers.Util.removeItem(array, 4);
        t.eq( array.toString(), "1,2,5", "Util.removeItem works on more than one element ");    
    }
    
    function test_Util_pagePosition(t) {
        t.plan( 2 );

        // making sure that the test iframe is visible
        var origDisplay;
        var parents = window.parent.document.getElementsByTagName('iframe');
        if (parents.length) {
            origDisplay = parents[1].parentNode.style.display;
            // span containing the test iframe is the invisible element
            parents[1].parentNode.style.display = "";
        }

        var pp = OpenLayers.Util.pagePosition(window);
        t.eq( pp.toString(), "0,0", "Page position doesn't bail if passed 'window'");
        
        var mapDiv = document.getElementById("map");
        var beforeScrollPp = OpenLayers.Util.pagePosition(mapDiv);
        window.scrollTo(100, 1200);
        pp = OpenLayers.Util.pagePosition(mapDiv);
        t.eq(pp, beforeScrollPp, "Page position should work after page has been scrolled");
        
        // reset test iframe visibility
        if (parents.length) {
            parents[1].parentNode.style.display = origDisplay;
        }
    }

    function test_Util_createDiv(t) {
        t.plan( 24 );

        var id = "boo";
        var px = new OpenLayers.Pixel(5,5);
        var sz = new OpenLayers.Size(10,10);
        var img = "http://www.openlayers.org/images/OpenLayers.trac.png";
        var position = "absolute";
        var border = "13px solid";
        var overflow = "hidden";
        var opacity = 0.5;

        var div = OpenLayers.Util.createDiv(id, px, sz, img, position, border, overflow, opacity);

        if (!isMozilla)
            t.ok( true, "skipping element test outside of Mozilla");
        else
            t.ok( div instanceof HTMLDivElement, "createDiv creates a valid HTMLDivElement" );
        t.eq( div.id, id, "div.id set correctly");    
        t.eq( div.style.left, px.x + "px", "div.style.left set correctly");    
        t.eq( div.style.top, px.y + "px", "div.style.top set correctly");    

        t.eq( div.style.width, sz.w + "px", "div.style.width set correctly");    
        t.eq( div.style.height, sz.h + "px", "div.style.height set correctly");    

        bImg = div.style.backgroundImage;
        imgCorrect = ( (bImg == "url(" + img + ")") ||  
                       (bImg == "url(\"" + img + "\")") );
        t.ok(imgCorrect, "div.style.backgroundImage correctly");    

        t.eq( div.style.position, position, "div.style.positionset correctly");    
        //Safari 3 separates the border style into separate entities when reading it
        if (OpenLayers.BROWSER_NAME == 'safari') {
          var s = border.split(' ');
          t.ok(div.style.borderTopWidth == s[0] && div.style.borderTopStyle == s[1], "good default popup.border")
        } else {
          t.ok( (div.style.border.indexOf(border) != -1), "div.style.border set correctly");
        }
            
        //Safari 3 separates style overflow into overflow-x and overflow-y
        var prop = (OpenLayers.BROWSER_NAME == 'safari') ? 'overflowX' : 'overflow';
        t.eq( div.style[prop], overflow, "div.style.overflow set correctly");    
        t.eq( parseFloat(div.style.opacity), opacity, "element.style.opacity set correctly");    
        //Some non-IE browsers don't return the alpha string for this value, which is okay
        var filterString = div.style.filter.match(/^alpha/) != null ? 
                               'alpha(opacity=' + (opacity * 100) + ')' : div.style.filter;
        t.eq( div.style.filter, filterString, "element.style.filter set correctly");

        //test defaults
        var div = OpenLayers.Util.createDiv();

        if (!isMozilla)
            t.ok( true, "skipping element test outside of Mozilla");
        else
            t.ok( div instanceof HTMLDivElement, "createDiv creates a valid HTMLDivElement" );
        t.ok( (div.id != ""), "div.id set correctly");    
        t.eq(div.style.left, "", "div.style.left set correctly");    
        t.eq(div.style.top, "", "div.style.top set correctly");    

        t.eq( div.style.width, "", "div.style.width set correctly");    
        t.eq( div.style.height, "", "div.style.height set correctly");    

        t.eq(div.style.backgroundImage, "", "div.style.backgroundImage correctly");    

        t.eq( div.style.position, "absolute", "div.style.positionset correctly");    
        //Safari 3 separates the border style into separate entities when reading it
        if (OpenLayers.BROWSER_NAME == 'safari') {
          t.ok(div.style.borderTopWidth == '' && div.style.borderTopStyle == '', "good default popup.border")
        } else {
          t.eq( div.style.border, "", "div.style.border set correctly");    
        }
        //Safari 3 separates style overflow into overflow-x and overflow-y
        var prop = (OpenLayers.BROWSER_NAME == 'safari') ? 'overflowX' : 'overflow';
        t.eq(div.style[prop], "", "div.style.overflow set correctly");    
        t.ok( !div.style.opacity, "element.style.opacity set correctly");    
        t.ok( !div.style.filter, "element.style.filter set correctly");

    }

    function test_Util_createImage(t) {
        t.plan( 22 );

        var img = "http://www.openlayers.org/images/OpenLayers.trac.png";
        var sz = new OpenLayers.Size(10,10);
        var xy = new OpenLayers.Pixel(5,5);
        var position = "absolute";
        var id = "boo";
        var border = "1px solid";
        var opacity = 0.5;

        var image = OpenLayers.Util.createImage(id, xy, sz, img, position, border, opacity);

        if (!isMozilla)
            t.ok( true, "skipping element test outside of Mozilla");
        else
            t.ok( image.nodeName == "IMG", "createImage creates a valid HTMLImageElement" );
        t.eq( image.id, id, "image.id set correctly");    
        t.eq( image.style.left, xy.x + "px", "image.style.left set correctly");    
        t.eq( image.style.top, xy.y + "px", "image.style.top set correctly");    

        t.eq( image.style.width, sz.w + "px", "image.style.width set correctly");    
        t.eq( image.style.height, sz.h + "px", "image.style.height set correctly");    

        //Safari 3 separates the border style into separate entities when reading it
        if (OpenLayers.BROWSER_NAME == 'safari') {
          var s = border.split(' ');
          t.ok(image.style.borderTopWidth == s[0] && image.style.borderTopStyle == s[1], "good default popup.border")
        } else {
          t.ok( (image.style.border.indexOf(border) != -1), "image.style.border set correctly");
        }
        t.eq( image.src, img, "image.style.backgroundImage correctly");    
        t.eq( image.style.position, position, "image.style.position set correctly");    
        t.eq( parseFloat(image.style.opacity), opacity, "image.style.opacity set correctly");    
        //Some non-IE browsers don't return the alpha string for this value, which is okay
        var filterString = image.style.filter.match(/^alpha/) != null ? 
                               'alpha(opacity=' + (opacity * 100) + ')' : image.style.filter;
        t.eq( image.style.filter, filterString, "element.style.filter set correctly");

        //test defaults
        var image = OpenLayers.Util.createImage();

        if (!isMozilla)
            t.ok( true, "skipping element test outside of Mozilla");
        else
            t.ok( image.nodeName == "IMG", "createDiv creates a valid HTMLDivElement" );
        t.ok( (image.id != ""), "image.id set to something");    
        t.eq( image.style.left, "", "image.style.left set correctly");    
        t.eq( image.style.top, "", "image.style.top set correctly");    

        t.eq( image.style.width, "", "image.style.width set correctly");    
        t.eq( image.style.height, "", "image.style.height set correctly");    

        t.ok((image.style.border == ""), "image.style.border set correctly");    
        t.eq(image.src, "", "image.style.backgroundImage correctly");    
        t.eq( image.style.position, "relative", "image.style.positionset correctly");    
        t.ok( !image.style.opacity, "element.style.opacity default unset");    
        t.ok( !image.style.filter, "element.style.filter default unset");

    }

    function test_Util_applyDefaults(t) {
    
        t.plan(12);
        
        var to = { 
            'a': "abra",
            'b': "blorg",
            'n': null
        };

        var from = { 
            'b': "zoink",
            'c': "press",
            'toString': function() {return 'works'},
            'n': "broken"
        };

        OpenLayers.Util.applyDefaults(to, from);

        t.ok( to instanceof Object, " applyDefaults returns an object");
        t.eq( to["a"], "abra", "key present in to but not from maintained");
        t.eq( to["b"], "blorg", "key present in to and from, maintained in to");
        t.eq( to["c"], "press", "key present in from and not to successfully copied to to");

        var ret = OpenLayers.Util.applyDefaults({'a': "abra",'b': "blorg"}, from);
        t.ok( ret instanceof Object, " applyDefaults returns an object");
        t.eq( ret["a"], "abra", "key present in ret but not from maintained");
        t.eq( ret["b"], "blorg", "key present in ret and from, maintained in ret");
        t.eq( ret["c"], "press", "key present in from and not ret successfully copied to ret");
        t.eq(to.toString(), "works", "correctly applies custom toString");
        t.eq(to.n, null, "correctly preserves null");
        
        var to;
        var from = {rand: Math.random()};
        
        var ret = OpenLayers.Util.applyDefaults(to, from);
        t.eq(ret.rand, from.rand, "works with undefined to");

        //regression test for #1716 -- allow undefined from
        try {
            OpenLayers.Util.applyDefaults({}, undefined);
            t.ok(true, "no exception thrown when from is undefined");
        } catch(err) {
            t.fail("exception thrown when from is undefined:" + err);
        }

    }

    function test_Util_getParameterString(t) {
        t.plan(6);

        var params = { 
            'foo': "bar",
            'chicken': 1.5
        };

        t.eq( OpenLayers.Util.getParameterString(params), "foo=bar&chicken=1.5", "getParameterString returns correctly");    
        t.eq( OpenLayers.Util.getParameterString({'a:':'b='}), "a%3A=b%3D", "getParameterString returns correctly with non-ascii keys/values");    
        
        t.eq(OpenLayers.Util.getParameterString({chars: "~!*()'"}), "chars=~!*()'", "~!*()' are unreserved or have no reserved purpose in a URI component");
        

        // Parameters which are a list should end up being a comma-seperated
        // list of the URL encoded strings
        var params = { foo: ["bar,baz"] };
        t.eq( OpenLayers.Util.getParameterString(params), "foo=bar%2Cbaz", "getParameterString encodes , correctly in arrays");    
        
        var params = { foo: ["bar","baz,"] };
        t.eq( OpenLayers.Util.getParameterString(params), "foo=bar,baz%2C", "getParameterString returns with list of CSVs when given a list. ");
        
        var params = { foo: [null, undefined, 0, "", "bar"] }
        t.eq( OpenLayers.Util.getParameterString(params), "foo=,,0,,bar", "getParameterString works fine with null values in array.");
    }
    
    function test_Util_urlAppend(t) {

        var params = "foo=bar";
        
        t.plan( 7 );

  // without ?        
        var url = "http://octo.metacarta.com/cgi-bin/mapserv";
        var str = OpenLayers.Util.urlAppend(url, params);
        t.eq(str, url + '?' + params, "urlAppend() works for url sans ?");


  // with ?        
        url = "http://octo.metacarta.com/cgi-bin/mapserv?";
        str = OpenLayers.Util.urlAppend(url, params);
        t.eq(str, url + params, "urlAppend() works for url with ?");

  // with ?param1=5
        url = "http://octo.metacarta.com/cgi-bin/mapserv?param1=5";
        str = OpenLayers.Util.urlAppend(url, params);
        t.eq(str, url + '&' + params, "urlAppend() works for url with ?param1=5");
  
  // with ?param1=5&
        url = "http://octo.metacarta.com/cgi-bin/mapserv?param1=5&";
        str = OpenLayers.Util.urlAppend(url, params);
        t.eq(str, url + params, "urlAppend() works for url with ?param1=5&");
 
  // with ?param1=5&param2=6
        url = "http://octo.metacarta.com/cgi-bin/mapserv?param1=5&param2=6";
        str = OpenLayers.Util.urlAppend(url, params);
        t.eq(str, url + "&" + params, "urlAppend() works for url with ?param1=5&param2=6");
        
  // with empty paramStr
        url = "http://octo.metacarta.com/cgi-bin/mapserv?param1=5"
        str = OpenLayers.Util.urlAppend(url, "");
        t.eq(str, url, "urlAppend() works with empty paramStr")

  // with null paramStr
        url = "http://octo.metacarta.com/cgi-bin/mapserv?param1=5"
        str = OpenLayers.Util.urlAppend(url, null);
        t.eq(str, url, "urlAppend() works with null paramStr")
    }

    function test_Util_createAlphaImageDiv(t) {
        t.plan( 19 );

        var img = "http://www.openlayers.org/images/OpenLayers.trac.png";
        var sz = new OpenLayers.Size(10,10);
        var xy = new OpenLayers.Pixel(5,5);
        var position = "absolute";
        var id = "boo";
        var border = "1px solid";
        var sizing = "crop";
        var opacity = 0.5;

        var imageDiv = OpenLayers.Util.createAlphaImageDiv(id, xy, sz, img, position, border, sizing, opacity);

        if (!isMozilla)
            t.ok( true, "skipping element test outside of Mozilla");
        else
            t.ok( imageDiv instanceof HTMLDivElement, "createDiv creates a valid HTMLDivElement" );

        t.eq( imageDiv.id, id, "image.id set correctly");    
        t.eq( imageDiv.style.left, xy.x + "px", "image.style.left set correctly");    
        t.eq( imageDiv.style.top, xy.y + "px", "image.style.top set correctly");    

        t.eq( imageDiv.style.width, sz.w + "px", "image.style.width set correctly");    
        t.eq( imageDiv.style.height, sz.h + "px", "image.style.height set correctly");    

        t.eq( imageDiv.style.position, position, "image.style.positionset correctly");    
        t.eq( parseFloat(imageDiv.style.opacity), opacity, "element.style.opacity set correctly");    
        
        var filterString;
        if (OpenLayers.Util.alphaHack()) {
            filterString = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='http://www.openlayers.org/images/OpenLayers.trac.png', sizingMethod='crop') alpha(opacity=50)";
        } else {
            //Some non-IE browsers don't return the alpha string for this value, which is okay
            var filterString = imageDiv.style.filter.match(/^alpha/) != null ? 
                                   'alpha(opacity=' + (opacity * 100) + ')' : imageDiv.style.filter;
        }        
        t.eq( imageDiv.style.filter, filterString, "element.style.filter set correctly");


        image = imageDiv.firstChild;
        if (!isMozilla)
            t.ok( true, "skipping element test outside of Mozilla");
        else
            t.ok( image.nodeName == "IMG", "createImage creates a valid HTMLImageElement" );
        t.eq( image.id, id + "_innerImage", "image.id set correctly");    

        t.eq( image.style.width, sz.w + "px", "image.style.width set correctly");    
        t.eq( image.style.height, sz.h + "px", "image.style.height set correctly");    

        //Safari 3 separates the border style into separate entities when reading it
        if (OpenLayers.BROWSER_NAME == 'safari') {
          var s = border.split(' ');
          t.ok(image.style.borderTopWidth == s[0] && image.style.borderTopStyle == s[1], "good default popup.border")
        } else {
          t.ok( (image.style.border.indexOf(border) != -1), "image.style.border set correctly");
        }
        
        t.eq( image.style.position, "relative", "image.style.positionset correctly");    

        if (OpenLayers.Util.alphaHack()) {
        
            t.eq(imageDiv.style.display, "inline-block", "imageDiv.style.display set correctly");

            var filter = "progid:DXImageTransform.Microsoft" +
                         ".AlphaImageLoader(src='" + img + "', " +
                         "sizingMethod='" + sizing + "') alpha(opacity=50)";
            t.eq(imageDiv.style.filter, filter, "div filter value correctly set");

            filter = "alpha(opacity=0)";
            t.eq(image.style.filter, filter, "image filter set correctly");

        } else {
            t.eq( image.src, img, "image.style.backgroundImage correctly");    
            t.ok(true, "div filter value not set (not in IE)");
            t.ok(true, "image filter value not set (not in IE)");
        }

        var imageDiv = OpenLayers.Util.createAlphaImageDiv(id, xy, sz, img, position, border);
        if (OpenLayers.Util.alphaHack()) {
            var filter = "progid:DXImageTransform.Microsoft" +
                         ".AlphaImageLoader(src='" + img + "', " +
                         "sizingMethod='scale')";
            t.eq(imageDiv.style.filter, filter, "sizingMethod default correctly set to scale");
        } else {
            t.ok(true);
        }        

    }

    function test_Util_modifyDOMElement_opacity(t) {
        t.plan(8);

        var opacity = 0.2;

        var element = document.createElement("div");

        OpenLayers.Util.modifyDOMElement(element, null, null, null, null, 
                                         null, null, opacity);

        t.eq(parseFloat(element.style.opacity), opacity, 
             "element.style.opacity set correctly when opacity = " + opacity);
        //Some non-IE browsers don't return the alpha string for this value, which is okay
        var filterString = element.style.filter.match(/^alpha/) != null ? 
                               'alpha(opacity=' + (opacity * 100) + ')' : element.style.filter;
        t.eq(element.style.filter, filterString, 
             "element.style.filter set correctly when opacity = " + opacity);

        OpenLayers.Util.modifyDOMElement(element, null, null, null, null, 
                                         null, null, "5");
    
        t.eq(parseFloat(element.style.opacity), opacity, 
             "element.style.opacity not changed if the value is incorrect");
        //Some non-IE browsers don't return the alpha string for this value, which is okay
        var filterString = element.style.filter.match(/^alpha/) != null ? 
                               'alpha(opacity=' + (opacity * 100) + ')' : element.style.filter;
        t.eq(element.style.filter, filterString, 
             "element.style.filter not changed if the value is incorrect");

        OpenLayers.Util.modifyDOMElement(element, null, null, null, null, 
                                         null, null, "hello");
    
        t.eq(parseFloat(element.style.opacity), opacity, 
             "element.style.opacity not changed if the value is incorrect");
        //Some non-IE browsers don't return the alpha string for this value, which is okay
        var filterString = element.style.filter.match(/^alpha/) != null ? 
                               'alpha(opacity=' + (opacity * 100) + ')' : element.style.filter;
        t.eq(element.style.filter, filterString, 
             "element.style.filter not changed if the value is incorrect");

        opacity = 1.00;
        OpenLayers.Util.modifyDOMElement(element, null, null, null, null, 
                                         null, null, opacity);

        t.eq(element.style.opacity, '', 
             "element.style.opacity is removed when opacity = " + opacity);
        // Some browser returns null instead of '', which is okay
        t.ok(element.style.filter == '' || element.style.filter == null,
             "element.style.filter is removed when opacity = " + opacity);
    }

    function test_Util_modifyDOMElement(t) {
        t.plan( 10 );

        var id = "boo";
        var px = new OpenLayers.Pixel(5,5);
        var sz = new OpenLayers.Size(10,10);
        var position = "absolute";
        var border = "1px solid";
        var overflow = "hidden";
        var opacity = 1/2;

        var element = document.createElement("div");

        OpenLayers.Util.modifyDOMElement(element, id, px, sz, position, 
                                         border, overflow, opacity);

        t.eq( element.id, id, "element.id set correctly");    
        t.eq( element.style.left, px.x + "px", "element.style.left set correctly");    
        t.eq( element.style.top, px.y + "px", "element.style.top set correctly");    

        t.eq( element.style.width, sz.w + "px", "element.style.width set correctly");    
        t.eq( element.style.height, sz.h + "px", "element.style.height set correctly");    

        t.eq( element.style.position, position, "element.style.position set correctly");    
        //Safari 3 separates the border style into separate entities when reading it
        if (OpenLayers.BROWSER_NAME == 'safari') {
          var s = border.split(' ');
          t.ok(element.style.borderTopWidth == s[0] && element.style.borderTopStyle == s[1], "good default popup.border")
        } else {
          t.ok( (element.style.border.indexOf(border) != -1), "element.style.border set correctly");
        }
        //Safari 3 separates style overflow into overflow-x and overflow-y
        var prop = (OpenLayers.BROWSER_NAME == 'safari') ? 'overflowX' : 'overflow';
        t.eq( element.style[prop], overflow, "element.style.overflow set correctly");    
        t.eq( parseFloat(element.style.opacity), opacity, "element.style.opacity set correctly");    
        //Some non-IE browsers don't return the alpha string for this value, which is okay
        var filterString = element.style.filter.match(/^alpha/) != null ? 
                               'alpha(opacity=' + (opacity * 100) + ')' : element.style.filter;
        t.eq( element.style.filter, filterString, "element.style.filter set correctly");
    }

    function test_Util_modifyAlphaImageDiv(t) {
        t.plan( 21 );

        var imageDiv = OpenLayers.Util.createAlphaImageDiv();

        var img = "http://www.openlayers.org/images/OpenLayers.trac.png";
        var sz = new OpenLayers.Size(10,10);
        var xy = new OpenLayers.Pixel(5,5);
        var position = "absolute";
        var id = "boo";
        var border = "1px solid";
        var sizing = "crop";
        var opacity = 0.5;

        OpenLayers.Util.modifyAlphaImageDiv(imageDiv, id, xy, sz, img, position, border, sizing, opacity);
        if (OpenLayers.Util.alphaHack())
            t.ok( true, "skipping element test outside of Mozilla");
        else
            t.ok( imageDiv.nodeName == "DIV", "createDiv creates a valid HTMLDivElement" );

        t.eq( imageDiv.id, id, "image.id set correctly");    
        t.eq( imageDiv.style.left, xy.x + "px", "image.style.left set correctly");    
        t.eq( imageDiv.style.top, xy.y + "px", "image.style.top set correctly");    

        t.eq( imageDiv.style.width, sz.w + "px", "image.style.width set correctly");    
        t.eq( imageDiv.style.height, sz.h + "px", "image.style.height set correctly");    

        t.eq( imageDiv.style.position, position, "image.style.position set correctly");    
        t.eq( parseFloat(imageDiv.style.opacity), opacity, "element.style.opacity set correctly");    

        

        image = imageDiv.firstChild;

        var filterString;
        if (OpenLayers.Util.alphaHack()) {
            filterString = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='http://www.openlayers.org/images/OpenLayers.trac.png', sizingMethod='crop') alpha(opacity=50)";
            t.ok( true, "skipping element test outside of Mozilla");
        } else {
            //Some non-IE browsers don't return the alpha string for this value, which is okay
            var filterString = imageDiv.style.filter.match(/^alpha/) != null ? 
                                   'alpha(opacity=' + (opacity * 100) + ')' : imageDiv.style.filter;
            t.ok( image.nodeName == "IMG", "createImage creates a valid HTMLImageElement" );
        }
        t.eq( imageDiv.style.filter, filterString, "element.style.filter set correctly");
        t.eq( image.id, id + "_innerImage", "image.id set correctly");    

        t.eq( image.style.width, sz.w + "px", "image.style.width set correctly");    
        t.eq( image.style.height, sz.h + "px", "image.style.height set correctly");    

        //Safari 3 separates the border style into separate entities when reading it
        if (OpenLayers.BROWSER_NAME == 'safari') {
          var s = border.split(' ');
          t.ok(image.style.borderTopWidth == s[0] && image.style.borderTopStyle == s[1], "good default popup.border")
        } else {
          t.ok( (image.style.border.indexOf(border) != -1), "image.style.border set correctly");
        }

        t.eq( image.style.position, "relative", "image.style.positionset correctly");    
        t.eq( image.src, img, "image.style.backgroundImage correctly");
        
        if (OpenLayers.Util.alphaHack()) {
        
            var filter = "progid:DXImageTransform.Microsoft" +
                         ".AlphaImageLoader(src='" + img + "', " +
                         "sizingMethod='" + sizing + "') alpha(opacity=" + opacity *100 + ")";
            t.eq(imageDiv.style.filter, filter, "div filter value correctly set");

            filter = "alpha(opacity=0)";
            t.eq(image.style.filter, filter, "image filter set correctly");

        } else {  
            t.ok(true, "div filter value not set (not in IE)");
            t.ok(true, "image filter value not set (not in IE)");
        }

        var imageDiv = OpenLayers.Util.createAlphaImageDiv();
        var display = "none";
        imageDiv.style.display = display;
        OpenLayers.Util.modifyAlphaImageDiv(imageDiv, id, xy, sz, img, position, border, sizing, opacity);
        t.eq(imageDiv.style.display, display, "imageDiv.style.display set correctly, if 'none'");

        var imageDiv = OpenLayers.Util.createAlphaImageDiv();
        var display = "block";
        imageDiv.style.display = display;
        OpenLayers.Util.modifyAlphaImageDiv(imageDiv, id, xy, sz, img, position, border, sizing, opacity);
        if(OpenLayers.Util.alphaHack()) {
            t.eq(imageDiv.style.display, "inline-block", "imageDiv.style.display set correctly, if not 'none'");
        } else {
            t.ok(true, "inline-block is not part of CSS2 and is not supported by Firefox 2");
        }

        

        var imageDiv = OpenLayers.Util.createAlphaImageDiv(id, xy, sz, img, position, border, "scale", opacity);
        if (OpenLayers.Util.alphaHack()) {
            var filter = "progid:DXImageTransform.Microsoft" +
                         ".AlphaImageLoader(src='" + img + "', " +
                         "sizingMethod='scale') alpha(opacity=" + opacity *100 + ")";
            t.eq(imageDiv.style.filter, filter, "sizingMethod default correctly set to scale");
        } else {
            t.ok(true);
        }        
   
    }
       
    function test_Util_upperCaseObject(t) {
        t.plan(8);
        
        var aKey = "chicken";
        var aValue = "pot pie";

        var bKey = "blorg";
        var bValue = "us maximus";
        
        var obj = {};
        obj[aKey] = aValue;        
        obj[bKey] = bValue;        
             
        var uObj = OpenLayers.Util.upperCaseObject(obj);          

        //make sure old object not modified
        t.eq(obj[aKey], aValue, "old lowercase value still present in old obj");
        t.eq(obj[bKey], bValue, "old lowercase value still present in old obj");

        t.eq(obj[aKey.toUpperCase()], null, "new uppercase value not present in old obj");
        t.eq(obj[bKey.toUpperCase()], null, "new uppercase value not present in old obj");

        //make sure new object modified
        t.eq(uObj[aKey], null, "old lowercase value not present");
        t.eq(uObj[bKey], null, "old lowercase value not present");

        t.eq(uObj[aKey.toUpperCase()], aValue, "new uppercase value present");
        t.eq(uObj[bKey.toUpperCase()], bValue, "new uppercase value present");
    }
    
    function test_Util_createUniqueID(t) {
        t.plan(2);
        
        var id = OpenLayers.Util.createUniqueID();
        t.ok(OpenLayers.String.startsWith(id, "id_"),
             "default OpenLayers.Util.createUniqueID starts id correctly");

        var id = OpenLayers.Util.createUniqueID("chicken");
        t.ok(OpenLayers.String.startsWith(id, "chicken"),
             "OpenLayers.Util.createUniqueID starts id correctly");
    }
    
    function test_units(t) {
        t.plan(2);
        t.eq(OpenLayers.INCHES_PER_UNIT.m, OpenLayers.INCHES_PER_UNIT.Meter, 'Same inches per m and Meters');
        t.eq(OpenLayers.INCHES_PER_UNIT.km, OpenLayers.INCHES_PER_UNIT.Kilometer, 'Same inches per km and Kilometers');
    }
        
    function test_Util_normalizeScale(t) {
        t.plan(2); 
        
        //normal scale
        var scale = 1/5;
        t.eq( OpenLayers.Util.normalizeScale(scale), scale, "normalizing a normal scale does nothing");

        //funky scale
        var scale = 5;
        t.eq( OpenLayers.Util.normalizeScale(scale), 1/5, "normalizing a wrong scale works!");
    }
    
    function test_Util_getScaleResolutionTranslation(t) {
        t.plan(5); 
        
        var scale = 1/150000000; 
        var resolution = OpenLayers.Util.getResolutionFromScale(scale);
        t.eq(resolution.toFixed(6), "0.476217", "Calculated correct resolution for " + scale);

        var scale = 1/150000000; 
        var resolution = OpenLayers.Util.getResolutionFromScale(scale, 'm');
        t.eq(resolution.toFixed(6), "52916.772500", "Calculated correct resolution for " + scale);

        scale = 150000000; 
        resolution = OpenLayers.Util.getResolutionFromScale(scale);
        t.eq(resolution.toFixed(6), "0.476217", "Calculated correct resolution for " + scale);

        scale = 150000000; 
        resolution = OpenLayers.Util.getResolutionFromScale(scale);
        t.eq(OpenLayers.Util.getScaleFromResolution(resolution), scale, "scale->resolution->scale works");
        
        scale = null;
        resolution = OpenLayers.Util.getResolutionFromScale(scale);
        t.eq(resolution, undefined, "falsey scale results in undefined resolution");
        
    }
    
    function test_Util_getImgLocation(t) {
        t.plan(3);

        OpenLayers.ImgPath = "foo/";
        t.eq(OpenLayers.Util.getImagesLocation(), "foo/", "ImgPath works as expected."); 
        OpenLayers.ImgPath = null;
        t.eq(OpenLayers.Util.getImagesLocation().substr(OpenLayers.Util.getImagesLocation().length-4,4), "img/", "ImgPath works as expected when not set."); 

        OpenLayers.ImgPath = '';
        t.eq(OpenLayers.Util.getImagesLocation().substr(OpenLayers.Util.getImagesLocation().length-4,4), "img/", "ImgPath works as expected when set to ''."); 
    }

    function test_Util_isEquivalentUrl(t) {
        t.plan(10);
        
        var url1, url2, options;

  //CASE

        url1 = "http://www.openlayers.org";
        url2 = "HTTP://WWW.OPENLAYERS.ORG";

        t.ok(OpenLayers.Util.isEquivalentUrl(url1, url2), "default ignoreCase works"); 

  //ARGS

        url1 = "http://www.openlayers.org?foo=5;bar=6";
        url2 = "http://www.openlayers.org?bar=6;foo=5";

        t.ok(OpenLayers.Util.isEquivalentUrl(url1, url2), "shuffled arguments works"); 

  //PORT

        url1 = "http://www.openlayers.org:80";
        url2 = "http://www.openlayers.org";

        t.ok(OpenLayers.Util.isEquivalentUrl(url1, url2), "default ignorePort80 works"); 

        options = {
            'ignorePort80': false
        }        
        url1 = "http://www.openlayers.org:80";
        url2 = "http://www.openlayers.org:50";

        t.ok(!OpenLayers.Util.isEquivalentUrl(url1, url2, options), "port check works"); 


  //HASH

        url1 = "http://www.openlayers.org#barf";
        url2 = "http://www.openlayers.org";

        t.ok(OpenLayers.Util.isEquivalentUrl(url1, url2), "default ignoreHash works"); 
        options = {
            'ignoreHash': false
        }        
        t.ok(!OpenLayers.Util.isEquivalentUrl(url1, url2, options), "ignoreHash FALSE works"); 

  //PROTOCOL

        url1 = "http://www.openlayers.org";
        url2 = "ftp://www.openlayers.org";

        t.ok(!OpenLayers.Util.isEquivalentUrl(url1, url2), "default ignoreHash works"); 


  //PATHNAME
        url1 = "foo.html?bar=now#go";
        url2 = "../tests/../tests/foo.html?bar=now#go";

        t.ok(OpenLayers.Util.isEquivalentUrl(url1, url2), "relative vs. absolute paths works");
        
        url1 = "/foo/bar";
        url2 = new Array(window.location.pathname.split("/").length-1).join("../")+"foo/bar";
        
        t.ok(OpenLayers.Util.isEquivalentUrl(url1, url2), "absolute and relative path without host works for "+url2) 

  //ARGS
        url1 = "foo.html?bbox=1,2,3,4",
        url2 = url1;
        t.ok(OpenLayers.Util.isEquivalentUrl(url1, url2), "equal urls with comma delimited params are equal");
    }
    
    function test_createUrlObject(t) {
        
        var cases = [{
            url: "http://example.com/",
            exp: {
                protocol: "http:",
                host: "example.com",
                port: "80",
                pathname: "/",
                args: {},
                hash: ""
            }
        }, {
            url: "http://example.com:80/",
            opt: {ignorePort80: true},
            exp: {
                protocol: "http:",
                host: "example.com",
                port: "",
                pathname: "/",
                args: {},
                hash: ""
            }
        }, {
            url: "http://example.com/",
            opt: {ignorePort80: true},
            exp: {
                protocol: "http:",
                host: "example.com",
                port: "",
                pathname: "/",
                args: {},
                hash: ""
            }
        }, {
            url: "http://example.com:88/",
            exp: {
                protocol: "http:",
                host: "example.com",
                port: "88",
                pathname: "/",
                args: {},
                hash: ""
            }
        }, {
            url: "http://example.com:88/foo#bar",
            exp: {
                protocol: "http:",
                host: "example.com",
                port: "88",
                pathname: "/foo",
                args: {},
                hash: "#bar"
            }
        }, {
            url: "http://example.com:88/?foo=bar",
            exp: {
                protocol: "http:",
                host: "example.com",
                port: "88",
                pathname: "/",
                args: {foo: "bar"},
                hash: ""
            }
        }, {
            url: "http://example.com/bogus/../bogus/../path",
            exp: {
                protocol: "http:",
                host: "example.com",
                port: "80",
                pathname: "/path",
                args: {},
                hash: ""
            }
        }, {
            url: "/relative#foo",
            exp: {
                protocol: window.location.protocol,
                host: window.location.hostname,
                port: window.location.port || "80",
                pathname: "/relative",
                args: {},
                hash: "#foo"
            }
        }, {
            url: "../foo",
            exp: {
                protocol: window.location.protocol,
                host: window.location.hostname,
                port: window.location.port || "80",
                pathname: (function() {
                    var parts = window.location.pathname.split("/");
                    return parts.slice(0, parts.length -2).join("/") + "/foo";
                })(),
                args: {},
                hash: ""
            }
        }];
        
        t.plan(cases.length);

        var c, obj;
        for(var i=0; i<cases.length; ++i) {
            c = cases[i];
            obj = OpenLayers.Util.createUrlObject(c.url, c.opt);
            t.eq(obj, c.exp, i + ": '" + c.url + "'");
        }
        
    }
    
    function test_Util_createUniqueIDSeq(t) {
        t.plan(1);

        OpenLayers.Util.lastSeqID = 0;
        OpenLayers.Util.createDiv();
        OpenLayers.Util.createDiv();
        t.eq(OpenLayers.Util.createDiv().id, "OpenLayersDiv3", "Div created is sequential, starting at lastSeqID in Util.");
    }

    function test_Util_getParameters(t) {
        t.plan(20);

        t.eq(OpenLayers.Util.getParameters(''), {},
                "getParameters works when the given argument is empty string");

        t.eq(OpenLayers.Util.getParameters(), {},
                "getParameters works with optional argument");

        t.eq(OpenLayers.Util.getParameters(null), {},
                "getParameters works with optional argument");

        t.eq(OpenLayers.Util.getParameters('http://www.example.com'), {},
             "getParameters works when args = ''");
        t.eq(OpenLayers.Util.getParameters('http://www.example.com?'), {},
             "getParameters works when args = '?'");
        t.eq(OpenLayers.Util.getParameters('http://www.example.com?hello=world&foo=bar'),
             {'hello' : 'world', 'foo': 'bar'},
             "getParameters works when args = '?hello=world&foo=bar'");
        t.eq(OpenLayers.Util.getParameters('http://www.example.com?hello=&foo=bar'),
             {'hello' : '', 'foo': 'bar'},
             "getParameters works when args = '?hello=&foo=bar'");
        t.eq(OpenLayers.Util.getParameters('http://www.example.com?foo=bar#bugssucks'),
             {'foo': 'bar'},
             "getParameters works when using a fragment identifier");
        t.eq(OpenLayers.Util.getParameters('http://www.example.com?foo=bar%3Aone'),
             {'foo': 'bar:one'},
             "getParameters works with percent encoded values");
        t.eq(OpenLayers.Util.getParameters('http://www.example.com?foo=bar:one,pub,disco'),
             {'foo': ['bar:one', 'pub', 'disco']},
             "getParameters works with a comma-separated value (parses into array)");
        t.eq(OpenLayers.Util.getParameters('http://www.example.com?foo=bar%3Aone%2Cpub%2Cdisco'),
             {'foo': ['bar:one', 'pub', 'disco']},
             "getParameters works with a URL encoded comma-separated values (parses into array)");
        
        var value = "%20";  // say you wanted to have a query string parameter value be literal "%20"
        var encoded = encodeURIComponent(value); // this is the proper URI component encoding
        var url = "http://example.com/path?key=" + encoded; // this is a properly encoded URL
        var params = OpenLayers.Util.getParameters(url);
        t.eq(params.key, value, "a properly encoded value of '%20' is properly decoded");

        /**
         * IETF RFC 2396 (http://www.ietf.org/rfc/rfc2396.txt) says spaces
         * should be encoded as "%20".  However, the "+" is used widely to
         * indicate a space in a URL.
         */
        t.eq(OpenLayers.Util.getParameters('http://www.example.com?foo=bar+one'),
             {'foo': 'bar one'},
             "getParameters works with + instead of %20 in values");
        t.eq(OpenLayers.Util.getParameters('http://www.example.com?foo=bar%20one'),
             {'foo': 'bar one'},
             "getParameters works with properly encoded space character");
        t.eq(OpenLayers.Util.getParameters('http://www.example.com?foo=bar%2Bone'),
             {'foo': 'bar+one'},
             "getParameters works with properly encoded + character");
             
        // Let's do some round tripping to make it harder to introduce regressions
        var obj = {
            "a key": "a value with spaces  (and +)",
            "see%2B%2B": "C++",
            "C++": "see%2B%2B",
            "~%257E": "+%252B",
            "who?": "me?",
            "#yes": "#you",
            "url": "http://example.com:80/?question=%3F&hash=%23&amp=&26#id"
        };
        var str = OpenLayers.Util.getParameterString(obj);
        t.eq(OpenLayers.Util.getParameters("?" + str), obj, "round tripped parameters");
        
        // try some oddly encoded strings
        var url = "http://example.com/?C%E9sar=C%E9sar+Ch%E1vez";
        var obj = OpenLayers.Util.getParameters(url);
        t.ok("César" in obj, "got proper key from C%E9sar");
        t.eq(obj["César"], "César Chávez", "got proper value from C%E9sar+Ch%E1vez");
        
        // try some properly encoded strings
        var url = "http://example.com/?C%C3%A9sar=C%C3%A9sar+Ch%C3%A1vez";
        var obj = OpenLayers.Util.getParameters(url);
        t.ok("César" in obj, "got proper key from C%C3%A9sar");
        t.eq(obj["César"], "César Chávez", "got proper value from C%E9sar+Ch%E1vez");

    }

    function tests_Util_extend(t) {
        t.plan(7);

        var source = {
            num: Math.random(),
            obj: {
                foo: "bar"
            },
            method: function() {
                return "method";
            },
            toString: function() {
                return "source";
            },
            nada: undefined
        };
        var destination = OpenLayers.Util.extend({nada: "untouched"}, source);
        t.eq(destination.num, source.num,
             "extend properly sets primitive property on destination");
        t.eq(destination.obj, source.obj,
             "extend properly sets object property on destination");
        t.eq(destination.method(), "method",
             "extend properly sets function property on destination");
        t.eq(destination.toString(), "source",
             "extend properly sets custom toString method");
        t.eq(destination.nada, "untouched",
             "undefined source properties don't clobber existing properties");
        t.eq(window.property, undefined, "Property variable not clobbered.");
        
        var destination;
        var source = {rand: Math.random()};
        var ret = OpenLayers.Util.extend(destination, source);
        t.eq(destination.rand, source.rand, "works with undefined destination");
        
    }
    
    function test_XX_Util_Try(t) {
        t.plan(7);

        var func1 = function() {
            t.ok(true, "func1 executed");
            throw "error";
        };
        
        var func2 = function() {
            t.ok(true, "func2 executed");
            throw "error";
        };

        g_TestVal3 = {};
        var func3 = function() {
            t.ok(true, "func3 executed");
            return g_TestVal3;            
        };

        g_TestVal4 = {};
        var func4 = function() {
            t.fail("func4 should *not* be executed");
            return g_TestVal4;            
        };

        var ret = OpenLayers.Util.Try(func1, func2);
        t.ok(ret == null, "if all functions throw exceptions, null returned");

        var ret = OpenLayers.Util.Try(func1, func2, func3, func4);
        t.ok(ret == g_TestVal3, "try returns first sucessfully executed function's return");

    }
    
    function test_getRenderedDimensions(t) {
        // from <script src="Util_common.js"> and shared by Util_w3c.html
        com_test_getRenderedDimensions(t); 
    }

    function test_toFloat(t) {
        t.plan(2);
        // actual possible computed Mercator tile coordinates, more or less
        var a1=40075016.67999999, b1=-20037508.33999999,
            a2=40075016.68, b2=-20037508.34;
        t.eq(OpenLayers.Util.toFloat(a1), OpenLayers.Util.toFloat(a2),
            "toFloat rounds large floats correctly #1");
        t.eq(OpenLayers.Util.toFloat(b1), OpenLayers.Util.toFloat(b2),
            "toFloat rounds large floats correctly #2");
    }
    function test_getFormattedLonLat(t) {
        t.plan(3);
        var z = 2 + (4/60) - 0.000002 ;
        t.eq(OpenLayers.Util.getFormattedLonLat(z,"lon"), "02°04'00\"E",
            "LonLat does not show 60 seconds.");
        t.eq(OpenLayers.Util.getFormattedLonLat(-181, "lon"), "179°00'00\"E", "crossing dateline from the west results in correct east coordinate");
        t.eq(OpenLayers.Util.getFormattedLonLat(181, "lon"), "179°00'00\"W", "crossing dateline from the east results in correct west coordinate");
    }

    /**
     * To test that we can safely call OpenLayers.Util.extend with an Event
     * instance, we need to capture a real event.
     */
    var loadEvent;
    window.onload = function(evt) {
        loadEvent = evt || window.event;
    }
    function test_extend_event(t) {
        t.plan(2);
        t.ok(loadEvent, "loadEvent recorded");
        var extended, err;
        try {
            extended = OpenLayers.Util.extend({foo: "bar"}, loadEvent);
        } catch (e) {
            err = e;
        }
        if (err) {
            t.fail("Failed to extend with an event: " + err.message);
        } else {
            t.eq(extended && extended.foo, "bar", "extended with event");
        }
    }

  </script>
</head>
<body>
    <div id="map" style="width: 1024px; height: 512px;"/>
</body>
</html>