Place this code block within the http {} block in your nginx.conf file:

    server {
	    server_name     vpu;
	    root            /srv/http/vpu/app/public;
	    index           index.php;

	    access_log      /var/log/nginx/vpu_access.log;
	    error_log       /var/log/nginx/vpu_error.log;

	    location / {
            try_files $uri /index.php;
	    }

	    location ~ \.php$ {
            fastcgi_pass    unix:/var/run/php-fpm/php-fpm.sock;
            fastcgi_index   index.php;
            fastcgi_param   SCRIPT_FILENAME $document_root$fastcgi_script_name;
            include         fastcgi_params;
	    }
    }

Note that you will have to change the server_name to the name you use in your hosts file. You will also have to adjust the directories according to where you installed the code. In this configuration, /srv/http/vpu/ is the project root. The public-facing part of VisualPHPUnit, however, is located in app/public within the project root (so in this example, it's /srv/http/vpu/app/public).

When that's done, restart your web server, and then point your browser at the server name you chose above!