diff --git a/test/setup/DBBackupTest.php b/test/setup/DBBackupTest.php
index 99452f888..7f767f439 100644
--- a/test/setup/DBBackupTest.php
+++ b/test/setup/DBBackupTest.php
@@ -14,43 +14,76 @@ use utils;
  */
 class DBBackupTest extends ItopTestCase
 {
+	/**
+	 * @throws \CoreException
+	 * @throws \MySQLException
+	 * @throws \ConfigException
+	 */
 	protected function setUp()
 	{
 		parent::setUp();
 		require_once(APPROOT.'core/config.class.inc.php');
 		require_once(APPROOT.'setup/backup.class.inc.php');
 		require_once(APPROOT.'core/cmdbsource.class.inc.php'); // DBBackup dependency
+
+		// We need a connection to the DB, so let's open it !
+		// We are using the default config file... as the server might not be configured for all the combination we are testing
+		// For example dev env and ci env won't accept TLS connection
+		$oConfigOnDisk = utils::GetConfig();
+		CMDBSource::InitFromConfig($oConfigOnDisk);
 	}
 
 	/**
+	 * No TLS connection = no additional CLI args !
+	 *
 	 * @throws \CoreException
 	 * @throws \ConfigException
 	 * @throws \MySQLException
 	 */
-	public function testGetMysqlCliTlsOptions()
+	public function testGetMysqlCliTlsOptionsNoTls()
 	{
 		$oConfigToTest = utils::GetConfig();
 
-		// No TLS connection = no additional CLI args !
 		$oConfigToTest->Set('db_tls.enabled', false);
 		$sCliArgsNoTls = DBBackup::GetMysqlCliTlsOptions($oConfigToTest);
+
 		$this->assertEmpty($sCliArgsNoTls);
+	}
 
-		// We need a connection to the DB, so let's open it !
-		$oConfigOnDisk = utils::GetConfig();
-		CMDBSource::InitFromConfig($oConfigOnDisk);
-
-		// TLS connection configured = we need one CLI arg
+	/**
+	 * TLS connection configured = we need one CLI arg
+	 *
+	 * @return void
+	 * @throws \ConfigException
+	 * @throws \CoreException
+	 */
+	public function testGetMysqlCliTlsOptionsWithTlsNoCa()
+	{
+		$oConfigToTest = utils::GetConfig();
 		$oConfigToTest->Set('db_tls.enabled', true);
 		$sCliArgsMinCfg = DBBackup::GetMysqlCliTlsOptions($oConfigToTest);
+
 		// depending on the MySQL version, we would have `--ssl` or `--ssl-mode=VERIFY_CA`
 		$this->assertStringStartsWith(' --ssl', $sCliArgsMinCfg);
+	}
 
-		// TLS connection configured + CA option = we need multiple CLI args
+	/**
+	 * TLS connection configured + CA option = we need multiple CLI args
+	 *
+	 * @return void
+	 * @throws \ConfigException
+	 * @throws \CoreException
+	 */
+	public function testGetMysqlCliTlsOptionsWithTlsAndCa()
+	{
+		$oConfigToTest = utils::GetConfig();
 		$sTestCa = 'my_test_ca';
+
+		$oConfigToTest->Set('db_tls.enabled', true);
 		$oConfigToTest->Set('db_tls.ca', $sTestCa);
 		$sCliArgsCapathCfg = DBBackup::GetMysqlCliTlsOptions($oConfigToTest);
-		$this->assertStringStartsWith(' --ssl', $sCliArgsMinCfg);
+
+		$this->assertStringStartsWith(' --ssl', $sCliArgsCapathCfg);
 		$this->assertStringEndsWith('--ssl-ca='.DBBackup::EscapeShellArg($sTestCa), $sCliArgsCapathCfg);
 	}
 }