Added specific error to spec.

lib/common/browser.rb

@@ -138,7 +138,7 @@ class Browser
     @config_file = config_file || @config_file
 
     if File.symlink?(@config_file)
-      raise "[ERROR] #{config_file} is a symlink."
+      raise "[ERROR] Config file is a symlink."
     else
       data = JSON.parse(File.read(@config_file))
     end

spec/lib/common/browser_spec.rb

@@ -205,7 +205,7 @@ describe Browser do
       browser = Browser.instance
       
       File.symlink('./testfile', symlink)
-      expect { browser.load_config(symlink) }.to raise_error
+      expect { browser.load_config(symlink) }.to raise_error("[ERROR] Config file is a symlink.")
       File.unlink(symlink)
     end
   end