fix: allow to specify a full hostname as a root URL (#521)

Author: evilebottnawi

lib/processCss.js

@@ -139,7 +139,7 @@ var parserPlugin = postcss.plugin("css-loader-parser", function(options) {
 
 module.exports = function processCss(inputSource, inputMap, options, callback) {
 	var query = options.query;
-	var root = query.root;
+	var root = query.root && query.root.length > 0 ? query.root.replace(/\/$/, "") : query.root;
 	var context = query.context;
 	var localIdentName = query.localIdentName || "[hash:base64]";
 	var localIdentRegExp = query.localIdentRegExp;

test/urlTest.js

@@ -27,6 +27,15 @@ describe("url", function() {
 	test("background img absolute with root", ".class { background: green url(/img.png) xyz }", [
 		[1, ".class { background: green url({./img.png}) xyz }", ""]
 	], "?root=.");
+	test("background img absolute with root", ".class { background: green url(/img.png) xyz }", [
+		[1, ".class { background: green url({./img.png}) xyz }", ""]
+	], "?root=./");
+	test("root with absolute url", ".class { background: green url(/img.png) xyz }", [
+		[1, ".class { background: green url(http://some.cdn.com/img.png) xyz }", ""]
+	], "?root=http://some.cdn.com");
+	test("root with absolute url with trailing slash", ".class { background: green url(/img.png) xyz }", [
+		[1, ".class { background: green url(http://some.cdn.com/img.png) xyz }", ""]
+	], "?root=http://some.cdn.com/");
 	test("background img external",
 		".class { background: green url(data:image/png;base64,AAA) url(http://example.com/image.jpg) url(//example.com/image.png) xyz }", [
 		[1, ".class { background: green url(data:image/png;base64,AAA) url(http://example.com/image.jpg) url(//example.com/image.png) xyz }", ""]