在phalcon单元测试中找不到UnitTestCase

I am running the example from https://docs.phalconphp.com/en/latest/reference/unit-testing.html I did all configuration but I am facing with

C:\xampp\htdocs\myproject>phpunit tests/UnitTest.php

Fatal error: Class 'UnitTestCase' not found in C:\xampp\htdocs\myproject\tests\Unit Test.php on line 16

Line 16 is

class UnitTest extends \UnitTestCase {

You need to run your test inside tests folder. As mentioned in that tutorial:

This will run any tests under the tests/ directory.

As you can see from PHPunit.xml file

<?xml version="1.0" encoding="UTF-8"?>
<phpunit bootstrap="./TestHelper.php"
         backupGlobals="false"
         backupStaticAttributes="false"
         verbose="true"
         colors="false"
         convertErrorsToExceptions="true"
         convertNoticesToExceptions="true"
         convertWarningsToExceptions="true"
         processIsolation="false"
         stopOnFailure="false"
         syntaxCheck="true">
    <testsuite name="Phalcon - Testsuite">
        <directory>./</directory>
    </testsuite>
</phpunit>

Directory is set to current one <directory>./</directory> So run tests like this:

C:\xampp\htdocs\myproject\tests>phpunit UnitTest.php