Added option to append timestamp to generated report filename.

For issue #21 and issue #31 this allows parallel tests to run without overwriting generated reports.

lib/cli.js

@@ -34,6 +34,11 @@ nconf.argv({
     describe: 'Filename to use when saving the generated report.',
     default: 'generatedReport.html'
   },
+  u: {
+    alias: 'unique-filename',
+    describe: 'Appends a timestamp to the end of the generated report filename.',
+    default: false
+  },
   p: {
     alias: 'prepend-filename',
     describe: 'Prepend filename to the package name in the report.  Helps distinguish between multiple runs/diff browser/same test',
@@ -67,6 +72,7 @@ var opts = {
   reportFilename: nconf.get('output'),
   openBrowser: nconf.get('browser') === true,
   prependFilename: nconf.get('prepend-filename') === true,
+  uniqueFilename: nconf.get('unique-filename') === true,
   hideSuccess: typeof (nconf.get('compact')) !== 'undefined',
   logLevel: nconf.get('log-level'),
   debug: {

lib/renderer.js

@@ -6,7 +6,9 @@ var fs = require('fs'),
 module.exports = function(opts, testRun, callback) {
 
   var save = typeof opts.saveFile === 'undefined' || opts.saveFile === true;
-  var filename = path.join(opts.reportsDirectory, opts.reportFilename);
+  var basename = path.basename(opts.reportFilename, '.html');
+  var filename = basename + ((opts.uniqueFilename) ? Date.now() : '') + '.html';
+  var outputPath = path.join(opts.reportsDirectory, filename);
   var theme = path.join(__dirname, 'themes', opts.themeName, 'index.jade');
 
   var html = null;
@@ -25,12 +27,12 @@ module.exports = function(opts, testRun, callback) {
   // saving the file.
   if (save) {
     logger.log('Saving Report File');
-    fs.writeFile(filename, html, function(err) {
-      callback(err, filename, html, testRun);
+    fs.writeFile(outputPath, html, function(err) {
+      callback(err, outputPath, html, testRun);
     });
   } else {
-    callback(null, filename, html, testRun);
+    callback(null, outputPath, html, testRun);
   }
 
-  return filename;
+  return outputPath;
 };

lib/reporter.js

@@ -26,6 +26,7 @@ module.exports = function(options) {
     openBrowser: true,
     hideSuccess: false,
     reportFilename: 'report.html',
+    uniqueFilename: false,
     themeName: 'default',
     logLevel: 1,
     debug: {