Bug: Warning no tests found in CodeIgiter\Tests\...

[willnode]

Describe the bug
I started to write tests in my app and CodeIgniter generate these warnings

1) Warning
No tests found in class "CodeIgniter\Test\CIDatabaseTestCase".

2) Warning
No tests found in class "CodeIgniter\Test\CIUnitTestCase".

I tried to manually configure my phpunit.xml but it didn't work. Easiest way to solve this according to internet is by set these class to abstract.

CodeIgniter 4 version
4.0.4

Expected behavior, and steps to reproduce if appropriate
Out of the box, should not generate these warning.

phpunit.xml that i tried:

<?xml version="1.0" encoding="UTF-8"?>
<phpunit bootstrap="vendor/codeigniter4/framework/system/Test/bootstrap.php" ...>
	<testsuites>
		<testsuite name="app">
			<directory>./tests</directory>
			<exclude>
				./vendor/codeigniter4/framework/system/Test/CIDatabaseTestCase.php
			</exclude>
		</testsuite>
	</testsuites>

	<filter>
		<whitelist addUncoveredFilesFromWhitelist="false" processUncoveredFilesFromWhitelist="false">
			<directory suffix=".php">./app</directory>
			<exclude>
				<directory suffix=".php">./app/Views</directory>
				<file>./app/Config/Routes.php</file>
			</exclude>
		</whitelist>
	</filter>

	<logging>
		...
	</logging>

	<php>
		...
	</php>
</phpunit>

Context

• OS: Windows 10
• PHP version [e.g. 6.5.4]