How to group PHPUnit tests into categories?

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// tests/MyTestSuite.php

use PHPUnitFrameworkTestSuite;

class MyTestSuite extends TestSuite
{
    public static function suite()
    {
        $suite = new self();
        
        // Add individual test classes to the suite
        $suite->addTestSuite(MyCategory1Test::class);
        $suite->addTestSuite(MyCategory2Test::class);
        
        // Add other test suites if needed
        $suite->addTestSuite(OtherTestSuite::class);

        return $suite;
    }
}

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// tests/MyCategory1Test.php

use PHPUnitFrameworkTestCase;

class MyCategory1Test extends TestCase
{
    public function testSomething()
    {
        // Test logic
    }

    // Add more tests specific to this category
}

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// tests/MyCategory2Test.php

use PHPUnitFrameworkTestCase;

class MyCategory2Test extends TestCase
{
    public function testSomethingElse()
    {
        // Test logic
    }

    // Add more tests specific to this category
}

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            ./tests
            ./tests/MyTestSuite.php
        
    

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$ vendor/bin/phpunit --testsuite "My Test Suite"