Fix test on Windows

Author: jbrantly

test/run.js

@@ -167,6 +167,13 @@ function createTest(test, testPath, options) {
 
                 var statsFileName = 'output.txt';
 
+                // do a little magic to normalize `\` to `/` for asset output
+                var newAssets = {};
+                Object.keys(stats.compilation.assets).forEach(function(asset) { 
+                    newAssets[asset.replace(/\\/g, "/")] = stats.compilation.assets[asset]; 
+                });
+                stats.compilation.assets = newAssets;
+                
                 var statsString = stats.toString({timings: false, version: false, hash: false})
                     .replace(new RegExp(regexEscape(testStagingPath+path.sep), 'g'), '')
                     .replace(new RegExp(regexEscape(rootPath+path.sep), 'g'), '')