title: How to test REST API request (rails)
body: <p>I have <code>REST API</code>, for example: I already create REST users, for creating user end point is go to "localhost:3000/users" POST method.</p>
  
  <p>So pattern of param should be like this : </p>
  
  <pre><code>:user =&gt; {:name =&gt; "apple", :address =&gt; "heaven"}
  </code></pre>
  
  <p>My question is : </p>
  
  <p>How to create pattern above, then I test it to endpoint POST method ?</p>
  
  <p>I already test with <code>postman</code> client, but failed because my pattern incorrect (miss <code>root : user</code>)</p>
  
  <p>Thanks</p>