setupArgon2i example

$hasher = new NativePasswordHasher(null, null, 17, \PASSWORD_BCRYPT);
        preg_match('# Password hash\s{1,}([\w+\/$.]+={0,2})\s+#', $output, $matches);
        $hash = $matches[1];
        $this->assertTrue($hasher->verify($hash, 'password', null));
    }

    public function testEncodePasswordArgon2i()
    {
        if (!($sodium = SodiumPasswordHasher::isSupported() && !\defined('SODIUM_CRYPTO_PWHASH_ALG_ARGON2ID13')) && !\defined('PASSWORD_ARGON2I')) {
            $this->markTestSkipped('Argon2i algorithm not available.');
        }
        $this->setupArgon2i();
        $this->passwordHasherCommandTester->execute([
            'password' => 'password',
            'user-class' => 'Custom\Class\Argon2i\User',
        ], ['interactive' => false]);

        $output = $this->passwordHasherCommandTester->getDisplay();
        $this->assertStringContainsString('Password hashing succeeded', $output);

        $hasher = $sodium ? new SodiumPasswordHasher() : new NativePasswordHasher(null, null, null, \PASSWORD_ARGON2I);
        preg_match('# Password hash\s+(\$argon2i?\$[\w,=\$+\/]+={0,2})\s+#', $output, $matches);
        $hash = $matches[1];