Further cleanup of background images rule

Author: Nicholas C. Zakas

src/rules/duplicate-background-url.js src/rules/duplicate-background-images.jssrc/rules/duplicate-background-url.js renamed to src/rules/duplicate-background-images.js

@@ -5,8 +5,8 @@
 CSSLint.addRule({
 
     //rule information
-    id: "duplicate-background-url",
-    name: "Disallow duplicate background URL",
+    id: "duplicate-background-images",
+    name: "Disallow duplicate background images",
     desc: "Every background-image should be unique. Use a common class for e.g. sprites.",
     browsers: "All",
 

tests/rules/duplicate-background-url.js …sts/rules/duplicate-background-images.jstests/rules/duplicate-background-url.js renamed to tests/rules/duplicate-background-images.js tests/rules/duplicate-background-url.js renamed to tests/rules/duplicate-background-images.js

@@ -8,14 +8,14 @@
         name: "Duplicate Background-URL Rule Errors",
 
         "duplicate background-image should result in a warning": function(){
-            var result = CSSLint.verify(".foo { background-image: url('mega-sprite.png'); } .foofoo { background-image: url('fancy-sprite.png'); } .bar { background-image: url(\"mega-sprite.png\"); } .foobar { background: white url(mega-sprite.png); }", {"duplicate-background-url": 1 });
+            var result = CSSLint.verify(".foo { background-image: url('mega-sprite.png'); } .foofoo { background-image: url('fancy-sprite.png'); } .bar { background-image: url(\"mega-sprite.png\"); } .foobar { background: white url(mega-sprite.png); }", {"duplicate-background-images": 1 });
             Assert.areEqual(2, result.messages.length);
             Assert.areEqual("warning", result.messages[0].type);
             Assert.areEqual("Background image 'mega-sprite.png' was used multiple times, first declared at line 1, col 8.", result.messages[0].message);
         },
 
         "duplicate background with url should result in a warning": function(){
-            var result = CSSLint.verify(".foo { background: url(mega-sprite.png) repeat-x; } .foofoo { background-image: url('fancy-sprite.png'); } .bar { background: white url(\"mega-sprite.png\") no-repeat left top; } .foobar { background: white url('mega-sprite.png'); }", {"duplicate-background-url": 1 });
+            var result = CSSLint.verify(".foo { background: url(mega-sprite.png) repeat-x; } .foofoo { background-image: url('fancy-sprite.png'); } .bar { background: white url(\"mega-sprite.png\") no-repeat left top; } .foobar { background: white url('mega-sprite.png'); }", {"duplicate-background-images": 1 });
             Assert.areEqual(2, result.messages.length);
             Assert.areEqual("warning", result.messages[0].type);
             Assert.areEqual("Background image 'mega-sprite.png' was used multiple times, first declared at line 1, col 8.", result.messages[0].message);