Nginx rewrite rule dynamic sub-folders and path - linux

Question

I am trying to rewrite a URL pattern to sub-folder.
location ~^ /test/article/(.*) {
root /var/www/example.com/test;
index index.html;
try_files $uri $uri/ /test/index.html;
}
When a user requests http://www.example.com/test/article/article-name,
I need to rewrite the URL to http://www.example.com/test/, but URL should stay the same, it should display as http://www.example.com/test/article/article-name in the browser.
"article-name" could be any thing with dashes. But "article" is the hard coded path, not a real folder.
My server is currently hosting Wordress in root directory of Nginx server which is /var/www/example.com/ . I tried different things with Nginx config file and not working yet. Currently, when I typed in http://www.example.com/test/article/article-name , Wordpress will show 404 error.
Any help would be appreciated.
Thank you.
Updates:::::::
Here is my latest config file under sites-available folder. It's showing Wordpress's home page when I tried the URL.
server {
listen 8080 default_server;
listen [::]:8080 default_server;
port_in_redirect off;
set_real_ip_from 127.0.0.1/32;
real_ip_header X-Forwarded-For;
real_ip_recursive on;
root /var/www/example.com;
index index.php index.html;
server_name example.com www.example.com;
rewrite ^/test/article/(.*) /test/;
location /test/ {
root /var/www/example.com/test/;
index index.html;
}
location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
try_files $uri $uri/ =404;
}
# pass PHP scripts to FastCGI server
#
# serve static files directly
location ~* ^.+.(jpg|jpeg|gif|css|png|js|ico|html|xml|txt)$ {
access_log off;
expires max;
}
location ~ \.php$ {
include snippets/fastcgi-php.conf;
fastcgi_pass unix:/run/php/php7.0-fpm.sock;
include /etc/nginx/fastcgi_params;
}
if (!-e $request_filename)
{
rewrite ^(.+)$ /index.php?q=$1 last;
}
}
Another update:
I am now testing with following config and it doesn't show Wordpress's 404 anymore. But it actually redirects to /test folder. I need to keep the url with "/test/article/article-name" in it.
rewrite ^/test/article/(.*) /test/;
location /test/ {
index index.html;
}

Answer 1

rewrite ^/test/article/(.*) /test;
location /test {
root /var/www/example.com/;
}
# create file `test` in `/var/www/example.com/`
Choice II
rewrite ^/test/article/(.*) /test/;
location /test/ {
root /var/www/example.com/test/;
index index.html;
}
# create directory `test` in `/var/www/example.com/`
# and create file `index.html` in `/var/www/example.com/test/`