Merge pull request #9 from lewisnyman/allow-empty-config

Allow empty config

Author: garris

capture/genBitmaps.js

@@ -47,13 +47,13 @@ casper.on('resource.received', function(resource) {
 
 function capturePageSelectors(url,grabConfigs,viewports,bitmaps_reference,bitmaps_test,isReference){
 
-	var 
+	var
 		screenshotNow = new Date(),
 		screenshotDateTime = screenshotNow.getFullYear() + pad(screenshotNow.getMonth() + 1) + pad(screenshotNow.getDate()) + '-' + pad(screenshotNow.getHours()) + pad(screenshotNow.getMinutes()) + pad(screenshotNow.getSeconds());
 
 	casper.start();
 	// casper.viewport(1280,1024);
-	
+
 
 
 	casper.each(grabConfigs,function(casper, grabConfig, grabConfig_index){
@@ -78,26 +78,34 @@ function capturePageSelectors(url,grabConfigs,viewports,bitmaps_reference,bitmap
 				this.echo('Screenshots for ' + vp.name + ' (' + vp.viewport.width + 'x' + vp.viewport.height + ')', 'info');
 
 				//HIDE SELECTORS WE WANT TO AVOID
-				grabConfig.hideSelectors.forEach(function(o,i,a){
-					casper.evaluate(function(o){
-						Array.prototype.forEach.call(document.querySelectorAll(o), function(s, j){
-							s.style.visibility='hidden';
-						});
-					},o);
-				});
+        if ( grabConfig.hasOwnProperty('hideSelectors') ) {
+  				grabConfig.hideSelectors.forEach(function(o,i,a){
+  					casper.evaluate(function(o){
+  						Array.prototype.forEach.call(document.querySelectorAll(o), function(s, j){
+  							s.style.visibility='hidden';
+  						});
+  					},o);
+  				});
+        }
 
 				//REMOVE UNWANTED SELECTORS FROM RENDER TREE
-				grabConfig.removeSelectors.forEach(function(o,i,a){
-					casper.evaluate(function(o){
-						Array.prototype.forEach.call(document.querySelectorAll(o), function(s, j){
-							s.style.display='none';
-						});
-					},o);
-				});
-				
+        if ( grabConfig.hasOwnProperty('removeSelectors') ) {
+  				grabConfig.removeSelectors.forEach(function(o,i,a){
+  					casper.evaluate(function(o){
+  						Array.prototype.forEach.call(document.querySelectorAll(o), function(s, j){
+  							s.style.display='none';
+  						});
+  					},o);
+  				});
+        }
+
 				//CREATE SCREEN SHOTS AND TEST COMPARE CONFIGURATION (CONFIG FILE WILL BE SAVED WHEN THIS PROCESS RETURNS)
+        // If no selectors are provided then set the default 'body'
+        if ( !grabConfig.hasOwnProperty('selectors') ) {
+          grabConfig.selectors = [ 'body' ];
+        }
 				grabConfig.selectors.forEach(function(o,i,a){
-					var cleanedSelectorName = o.replace(/[^a-zA-Z\d]/,'');//remove anything that's not a letter or a number 				
+					var cleanedSelectorName = o.replace(/[^a-zA-Z\d]/,'');//remove anything that's not a letter or a number
 					//var cleanedUrl = grabConfig.url.replace(/[^a-zA-Z\d]/,'');//remove anything that's not a letter or a number
 					var fileName = grabConfig_index + '_' + i + '_' + cleanedSelectorName + '_' + viewport_index + '_' + vp.name + '.png';;
 
@@ -117,11 +125,11 @@ function capturePageSelectors(url,grabConfigs,viewports,bitmaps_reference,bitmap
 
 					casper.captureSelector(filePath, o);
 					//casper.echo('remote capture to > '+filePath,'info');
-				
+
 				});//end topLevelModules.forEach
 			});
-			
-			
+
+
 		});//end casper.each viewports
 
 	});//end casper.each grabConfig