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<html> |
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<head> |
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<script src="../../lib/OpenLayers.js"></script> |
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<script type="text/javascript"> |
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var layer; |
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function test_Layer_FixedZoomLevels (t) { |
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t.plan( 39 ); |
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var layer = { 'MIN_ZOOM_LEVEL': 5, |
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'MAX_ZOOM_LEVEL': 10 }; |
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//defaults |
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layer = p_createLayer(layer); |
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p_minMaxNum(t, layer, layer.MIN_ZOOM_LEVEL, layer.MAX_ZOOM_LEVEL, "nothing specified"); |
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//layer.options |
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// min,num |
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layer = p_createLayer(layer, {}, { minZoomLevel: 3, numZoomLevels: 12}); |
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p_minMaxNum(t, layer, layer.MIN_ZOOM_LEVEL, layer.MAX_ZOOM_LEVEL, "min too low num too high(layer.options)"); |
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layer = p_createLayer(layer, {}, { minZoomLevel: 6, numZoomLevels: 3 }); |
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p_minMaxNum(t, layer, 6, 8, "valid min,num(layer.options)"); |
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// max |
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layer = p_createLayer(layer, {}, { maxZoomLevel: 9 }); |
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p_minMaxNum(t, layer, layer.MIN_ZOOM_LEVEL, 9, "valid max(layer.options)"); |
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layer = p_createLayer(layer, {}, { maxZoomLevel: 12 }); |
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p_minMaxNum(t, layer, layer.MIN_ZOOM_LEVEL, layer.MAX_ZOOM_LEVEL, "invalid max(layer.options)"); |
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//map |
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// min,num |
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layer = p_createLayer(layer, { minZoomLevel: 3, numZoomLevels: 12}); |
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p_minMaxNum(t, layer, layer.MIN_ZOOM_LEVEL, layer.MAX_ZOOM_LEVEL, "min too low num too high(map)"); |
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layer = p_createLayer(layer, { minZoomLevel: 6, numZoomLevels: 3 }); |
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p_minMaxNum(t, layer, 6, 8, "valid min,num(map)"); |
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// max |
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layer = p_createLayer(layer, { maxZoomLevel: 9 }); |
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p_minMaxNum(t, layer, layer.MIN_ZOOM_LEVEL, 9, "valid max(map)"); |
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layer = p_createLayer(layer, { maxZoomLevel: 12 }); |
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p_minMaxNum(t, layer, layer.MIN_ZOOM_LEVEL, layer.MAX_ZOOM_LEVEL, "invalid max(map)"); |
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//map vs. options |
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layer = p_createLayer(layer, {minZoomLevel: 6, numZoomLevels: 2}, { minZoomLevel: 7, numZoomLevels: 3}); |
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p_minMaxNum(t, layer, 7, 9, "min,num(layer.options) wins over (map)"); |
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layer = p_createLayer(layer, {minZoomLevel: 6, maxZoomLevel: 8}, { minZoomLevel: 7, maxZoomLevel: 9}); |
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p_minMaxNum(t, layer, 7, 9, "min,max(layer.options) wins over (map)"); |
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// numZoomLevels vs. maxZoomLevel |
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layer = p_createLayer(layer, {maxZoomLevel: 8, numZoomLevels: 6}); |
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p_minMaxNum(t, layer, layer.MIN_ZOOM_LEVEL, 10, "min,max(layer.options) wins over (map)"); |
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// resolutions array |
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var resolutions = Array(20); |
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for (var i = 0; i < 20; i++) { |
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resolutions[i] = Math.random(); |
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} |
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OpenLayers.Util.extend(layer, {RESOLUTIONS:resolutions}); |
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var minZoomLevel = 6; |
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var numZoomLevels = 2; |
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layer = p_createLayer(layer, {}, {minZoomLevel: minZoomLevel, numZoomLevels: numZoomLevels}); |
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t.eq( layer.resolutions.length, numZoomLevels, "length of resolutions array ok"); |
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for (var i = 0; i < numZoomLevels; i++) { |
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t.eq( layer.resolutions[i], resolutions[i + minZoomLevel], "resolutions array at index " + i + " ok"); |
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} |
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} |
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function p_createLayer(layer, mapOptions, layerOptions) { |
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layer.map = mapOptions || {}; |
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layer.options = layerOptions || {}; |
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OpenLayers.Layer.FixedZoomLevels.prototype.initResolutions.apply(layer); |
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return layer; |
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} |
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function p_minMaxNum(t, layer, min, max, msg) { |
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t.eq( layer.minZoomLevel, min, "min zoom level inherited from layer constant: " + msg); |
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t.eq( layer.maxZoomLevel, max, "max zoom level inherited from layer constant: " + msg); |
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t.eq( layer.numZoomLevels, max - min + 1, "num zoom levels correctly calcuated: " + msg); |
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} |
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</script> |
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</head> |
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<body> |
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<div id="map"></div> |
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</body> |
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</html> |
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