Add phpunit test to add all additions to smarty

ReadMe.md

@@ -47,6 +47,33 @@ Alternative setup composer local zip file repot:
       1) Update and leep the label/pos changes
 5) Create new release version as official relase number
 
+## Test
+
+After any update run `tools/phpunit` to test the compare output, also a visual check can be done by accessing the `test/` folder
+
+- Translations should work
+- pos/label names for checkbox/options should work
+- get var output should work
+- plugin test load should work
+
+### For intelephense users when phpunit was installed as phar
+
+Intelephense cannot directly access the phar file, if phpunit was installed as a phar file (eg via phive) then the following commands must be used to setup the intelephense parser
+
+In the base folder:
+
+```sh
+php -r "(new Phar('/path/to/phive/folder/.phive/phars/phpunit-10.3.5.phar'))->extractTo('tools-libs/phpunit');"
+```
+
+Then open the vscode settings and set for the Folder (if multiple folders are in the workspace) or the Workspace the following setting
+
+```txt
+"intelephense.environment.includePaths": [
+  "/tools-libs/phpunit/"
+]
+```
+
 ## Updated files (different from master)
 
 ### New