PHPUnit and Magento Bootstrap Fatal error: Uncaught CredisException - redis

Question

I have a problem with Magento 1.9 and PHPUNit 7.4. PHP version is 7.2.
Below the tree. http is the folder of Magento.
root/
├── http/
│ └── app
├── php-unit -> (with composer)
├── test/
│ └── unit/
│ ├── bootstrap.php
│ └── testsuite/
│ └── module
└── phpunit.xml
Below XML source file.
<!-- phpunit.xml -->
<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/|version|/phpunit.xsd"
backupStaticAttributes="false"
bootstrap="tests/unit/bootstrap.php"
cacheTokens="true"
backupGlobals="true"
forceCoversAnnotation="false"
convertErrorsToExceptions="true"
convertNoticesToExceptions="true"
convertWarningsToExceptions="true"
stopOnError="false"
stopOnIncomplete="false"
stopOnSkipped="false"
stopOnRisky="false"
stopOnFailure="false"
testSuiteLoaderClass="PHPUnit\Runner\StandardTestSuiteLoader"
timeoutForSmallTests="1"
timeoutForMediumTests="10"
timeoutForLargeTests="60"
colors="true"
verbose="true">
<testsuites>
<testsuite name="Test Suite">
<directory>tests/unit/testsuite/</directory>
</testsuite>
</testsuites>
<filter>
<whitelist processUncoveredFilesFromWhitelist="true">
<directory suffix=".php">http/app/code/local/</directory>
<exclude>
<file>http/app/Mage.php</file>
<directory suffix=".php">http/app/code/core</directory>
<directory suffix=".php">http/app/code/local/Credis</directory>
<directory suffix=".phtml">http/app/design</directory>
<directory suffix=".php">http/lib/Varien</directory>
<directory suffix=".php">http/lib/Zend</directory>
<directory suffix=".php">http/lib/Magento</directory>
</exclude>
</whitelist>
</filter>
</phpunit>
Below bootstrap.php.
//bootstrap.php
class Bootstrap {
public function __construct() {
echo "Loading Magento\n";
# ABSOLUTE PATH SERVER
require_once( getcwd().'/http/app/Mage.php' );
echo "require_once Mage\n";
Mage::app(); <--- Error
echo "start Mage::app()\n";
The error message, finally:
PHP Fatal error: Uncaught CredisException: Connection to Redis redis:6379 failed after 2 failures.
Last Error : (0) php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /myfolder/http/app/code/local/Credis/Client.php:475