PHP Unit Testing(PHPUnit )

Steps

1. Install PHPUnit with composer
   Global

   composer global require --dev phpunit/phpunit

   PS: Global Composer is in C:\Users\user\AppData\Roaming\Composer folder
   To test

   phpunit --version

   Create phpunit.xml Sample Reference

   <?xml version="1.0" encoding="UTF-8"?>
   <phpunit bootstrap = "vendor/autoload.php"
   backupGlobals               = "false"
   testdox                     = "true"
   backupStaticAttributes      = "false"
   colors                      = "true"
   convertErrorsToExceptions   = "true"
   convertNoticesToExceptions  = "true"
   convertWarningsToExceptions = "true"
   processIsolation            = "false"
   stopOnFailure               = "false">
   <testsuites>
       <testsuite name="Project Test Suite">
           <directory>tests</directory>
       </testsuite>
   </testsuites>
   </phpunit>

   Put SampleTest.php in tests folder

   <?php declare(strict_types=1);
   use PHPUnit\Framework\TestCase;
   class SampleTest extends TestCase
   {
   // assertion asserts that something matching what you expect to do
   public function testTrueAssertsToTrue()
   {
       $this->assertTrue(true);
   }
   }

   Then you could run 'phpunit'

   phpunit

   Types of Assestions available

Local

Instal

composer  require --dev phpunit/phpunit

Local Testing

"vendor/bin/phpunit" --version

insert in composer.json

"autoload": {
        "classmap": [
            "src/"
        ]
    },

Also Run

composer dump-autoload -o

To Test without phpunit.xml, you must specify tests directory

"vendor/bin/phpunit"  tests

OR for testing with documents

"vendor/bin/phpunit" --testdox tests