diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 0f40e9f..7c5fcbd 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -20,7 +20,7 @@ jobs:
     name: "Generate CI matrix"
     uses: "glpi-project/plugin-ci-workflows/.github/workflows/generate-ci-matrix.yml@v1"
     with:
-      glpi-version: "11.0.x"
+      glpi-version: "12.0.x"
   ci:
     name: "GLPI ${{ matrix.glpi-version }} - php:${{ matrix.php-version }} - ${{ matrix.db-image }}"
     needs: "generate-ci-matrix"
diff --git a/.gitignore b/.gitignore
index 044ece9..03a6388 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ vendor/
 .gh_token
 *.min.*
 var/
+.phpunit.result.cache
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7f5214b..d09e439 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+### Added
+
+- GLPI 12 compatibility
+
 ### Fixed
 
 - CI: fix Psalm cache directory, drop the stray `glpi-project/tools` composer dependency, declare a unique composer autoloader suffix
diff --git a/ajax/agent.php b/ajax/agent.php
index 9375ec4..0dcad73 100644
--- a/ajax/agent.php
+++ b/ajax/agent.php
@@ -29,6 +29,7 @@
  */
 
 use Glpi\Exception\Http\NotFoundHttpException;
+use Glpi\Inventory\Conf;
 
 use function Safe\json_encode;
 
@@ -38,8 +39,8 @@
 Html::header_nocache();
 
 Session::checkLoginUser();
-Session::checkRight("inventory", READ);
-Session::checkRight("database_inventory", PluginDatabaseinventoryProfile::RUN_DATABSE_INVENTORY);
+Session::checkRight(Conf::class, READ);
+Session::checkRight(PluginDatabaseinventoryDatabaseParam::class, PluginDatabaseinventoryProfile::RUN_DATABSE_INVENTORY);
 
 if (isset($_POST['action']) && isset($_POST['id'])) {
     $agent = new Agent();
diff --git a/composer.json b/composer.json
index f3811f7..b1d84aa 100644
--- a/composer.json
+++ b/composer.json
@@ -10,6 +10,11 @@
         },
         "sort-packages": true
     },
+    "autoload": {
+        "psr-4": {
+            "GlpiPlugin\\DatabaseInventory\\Tests\\": "tests"
+        }
+    },
     "autoload-dev": {
         "psr-4": {
             "Glpi\\Tools\\": "../../tools/src/"
diff --git a/front/computergroup.form.php b/front/computergroup.form.php
index 1dad2c8..d1e880d 100644
--- a/front/computergroup.form.php
+++ b/front/computergroup.form.php
@@ -30,15 +30,11 @@
 
 use Glpi\Event;
 
-Session::checkRight('config', READ);
+Session::checkRight(Config::$rightname, READ);
 
-if (!isset($_GET['id'])) {
-    $_GET['id'] = '';
-}
+$_GET['id'] ??= '';
 
-if (!isset($_GET['withtemplate'])) {
-    $_GET['withtemplate'] = '';
-}
+$_GET['withtemplate'] ??= '';
 
 $computergroup       = new PluginDatabaseinventoryComputerGroup();
 $computergroupstatic = new PluginDatabaseinventoryComputerGroupStatic();
diff --git a/front/computergroup.php b/front/computergroup.php
index a2b516c..fc7cc6f 100644
--- a/front/computergroup.php
+++ b/front/computergroup.php
@@ -28,7 +28,7 @@
  * -------------------------------------------------------------------------
  */
 
-Session::checkRight('config', UPDATE);
+Session::checkRight(Config::$rightname, UPDATE);
 
 Html::header(
     PluginDatabaseinventoryComputerGroup::getTypeName(Session::getPluralNumber()),
diff --git a/front/credential.form.php b/front/credential.form.php
index c495186..5e36f42 100644
--- a/front/credential.form.php
+++ b/front/credential.form.php
@@ -30,15 +30,11 @@
 
 use Glpi\Event;
 
-Session::checkRight('config', READ);
+Session::checkRight(Config::$rightname, READ);
 
-if (!isset($_GET['id'])) {
-    $_GET['id'] = '';
-}
+$_GET['id'] ??= '';
 
-if (!isset($_GET['withtemplate'])) {
-    $_GET['withtemplate'] = '';
-}
+$_GET['withtemplate'] ??= '';
 
 $credential = new PluginDatabaseinventoryCredential();
 
diff --git a/front/credential.php b/front/credential.php
index d5e976c..d5cc3d3 100644
--- a/front/credential.php
+++ b/front/credential.php
@@ -28,7 +28,7 @@
  * -------------------------------------------------------------------------
  */
 
-Session::checkRight('config', UPDATE);
+Session::checkRight(Config::$rightname, UPDATE);
 
 Html::header(
     PluginDatabaseinventoryCredential::getTypeName(Session::getPluralNumber()),
diff --git a/front/databaseparam.form.php b/front/databaseparam.form.php
index ccbd75e..44c2b82 100644
--- a/front/databaseparam.form.php
+++ b/front/databaseparam.form.php
@@ -30,15 +30,11 @@
 
 use Glpi\Event;
 
-Session::checkRight('config', READ);
+Session::checkRight(Config::$rightname, READ);
 
-if (!isset($_GET['id'])) {
-    $_GET['id'] = '';
-}
+$_GET['id'] ??= '';
 
-if (!isset($_GET['withtemplate'])) {
-    $_GET['withtemplate'] = '';
-}
+$_GET['withtemplate'] ??= '';
 
 $databaseparam               = new PluginDatabaseinventoryDatabaseParam();
 $databaseparam_credential    = new PluginDatabaseinventoryDatabaseParam_Credential();
diff --git a/front/databaseparam.php b/front/databaseparam.php
index bd7966e..f4d456d 100644
--- a/front/databaseparam.php
+++ b/front/databaseparam.php
@@ -28,7 +28,7 @@
  * -------------------------------------------------------------------------
  */
 
-Session::checkRight('config', UPDATE);
+Session::checkRight(Config::$rightname, UPDATE);
 
 Html::header(
     PluginDatabaseinventoryDatabaseParam::getTypeName(Session::getPluralNumber()),
diff --git a/hook.php b/hook.php
index 0e420b8..fbf1637 100644
--- a/hook.php
+++ b/hook.php
@@ -89,14 +89,14 @@ function plugin_databaseinventory_uninstall()
 function plugin_databaseinventory_MassiveActions($type)
 {
     // Must be super-admin
-    if (!Session::haveRight('database_inventory', UPDATE)) {
+    if (!Session::haveRight(PluginDatabaseinventoryDatabaseParam::class, UPDATE)) {
         return [];
     }
 
     switch ($type) {
         case 'Computer':
         case 'Agent':
-            $class = PluginDatabaseinventoryInventoryAction::getType();
+            $class = PluginDatabaseinventoryInventoryAction::class;
             $key   = PluginDatabaseinventoryInventoryAction::MA_PARTIAL;
             $label = __s('Run partial databases inventory', 'databaseinventory');
 
@@ -113,7 +113,7 @@ function postItemForm(CommonDBTM $item)
 
 function cleanComputerFromStaticGroup(CommonDBTM $item)
 {
-    if ($item::getType() === Computer::getType()) {
+    if ($item::class === Computer::class) {
         $c_static = new PluginDatabaseinventoryComputerGroupStatic();
         $c_static->deleteByCriteria(['computers_id' => $item->fields['id']]);
     }
@@ -121,7 +121,7 @@ function cleanComputerFromStaticGroup(CommonDBTM $item)
 
 function cleanAgentFromContactLog(CommonDBTM $item)
 {
-    if ($item::getType() === Agent::getType()) {
+    if ($item::class === Agent::class) {
         $contactlog = new PluginDatabaseinventoryContactLog();
         $contactlog->deleteByCriteria(['agents_id' => $item->fields['id']]);
     }
diff --git a/inc/computergroup.class.php b/inc/computergroup.class.php
index f655a0d..da29f22 100644
--- a/inc/computergroup.class.php
+++ b/inc/computergroup.class.php
@@ -60,9 +60,9 @@
 
 class PluginDatabaseinventoryComputerGroup extends CommonDBTM
 {
-    public $dohistory        = true;
+    public bool $dohistory   = true;
 
-    public static $rightname = 'database_inventory';
+    public static string $rightname = 'database_inventory';
 
     public static function getTypeName($nb = 0)
     {
diff --git a/inc/computergroupdynamic.class.php b/inc/computergroupdynamic.class.php
index 88b08b3..6935c31 100644
--- a/inc/computergroupdynamic.class.php
+++ b/inc/computergroupdynamic.class.php
@@ -39,7 +39,7 @@
 
 class PluginDatabaseinventoryComputerGroupDynamic extends CommonDBTM
 {
-    public static $rightname = 'database_inventory';
+    public static string $rightname = 'database_inventory';
 
     public static function getTypeName($nb = 0)
     {
@@ -192,9 +192,7 @@ public function isDynamicSearchMatchComputer(Computer $computer)
             'value'      => $computer->fields['id'],
         ];
 
-        if (!isset($_SESSION['glpiname'])) {
-            $_SESSION['glpiname'] = 'databaseinventory_plugin';
-        }
+        $_SESSION['glpiname'] ??= 'databaseinventory_plugin';
 
         $search_params = Search::manageParams('Computer', $search);
         $data          = Search::prepareDatasForSearch('Computer', $search_params);
@@ -250,7 +248,7 @@ private static function showForItem(PluginDatabaseinventoryComputerGroup $comput
 
             //hack because submit button is not a submit... See https://github.com/glpi-project/glpi/pull/20731
             ob_start();
-            Search::showGenericSearch(Computer::getType(), $p);
+            Search::showGenericSearch(Computer::class, $p);
             $generic_search = ob_get_clean();
             echo preg_replace('/type="button" name="save"/', 'type="submit" name="save"', $generic_search);
 
diff --git a/inc/computergroupstatic.class.php b/inc/computergroupstatic.class.php
index f3c953b..15af522 100644
--- a/inc/computergroupstatic.class.php
+++ b/inc/computergroupstatic.class.php
@@ -61,21 +61,21 @@
 class PluginDatabaseinventoryComputerGroupStatic extends CommonDBRelation
 {
     // From CommonDBRelation
-    public static $itemtype_1 = 'PluginDatabaseinventoryComputerGroup';
+    public static ?string $itemtype_1 = 'PluginDatabaseinventoryComputerGroup';
 
-    public static $items_id_1 = 'plugin_databaseinventory_computergroups_id';
+    public static ?string $items_id_1 = 'plugin_databaseinventory_computergroups_id';
 
-    public static $itemtype_2 = 'Computer';
+    public static ?string $itemtype_2 = 'Computer';
 
-    public static $items_id_2 = 'computers_id';
+    public static ?string $items_id_2 = 'computers_id';
 
-    public static $checkItem_2_Rights = self::DONT_CHECK_ITEM_RIGHTS;
+    public static int $checkItem_2_Rights = self::DONT_CHECK_ITEM_RIGHTS;
 
-    public static $logs_for_item_2    = false;
+    public static bool $logs_for_item_2 = false;
 
-    public $auto_message_on_action    = false;
+    public bool $auto_message_on_action = false;
 
-    public static $rightname = 'database_inventory';
+    public static string $rightname = 'database_inventory';
 
     public static function getTypeName($nb = 0)
     {
diff --git a/inc/contactlog.class.php b/inc/contactlog.class.php
index aafeca7..661cdce 100644
--- a/inc/contactlog.class.php
+++ b/inc/contactlog.class.php
@@ -60,9 +60,9 @@
 
 class PluginDatabaseinventoryContactLog extends CommonDBTM
 {
-    public $dohistory        = true;
+    public bool $dohistory   = true;
 
-    public static $rightname = 'database_inventory';
+    public static string $rightname = 'database_inventory';
 
     public static function canCreate(): bool
     {
@@ -155,7 +155,7 @@ private static function showForDatabaseParams(PluginDatabaseinventoryDatabasePar
         TemplateRenderer::getInstance()->display(
             '@databaseinventory/contactlog.html.twig',
             [
-                'itemtype'    => PluginDatabaseinventoryDatabaseParam::getType(),
+                'itemtype'    => PluginDatabaseinventoryDatabaseParam::class,
                 'contactlogs' => $listofctlog,
                 'canread'     => $databaseparams->can($ID, READ),
             ],
@@ -205,7 +205,7 @@ private static function showForAgent(Agent $agent)
         TemplateRenderer::getInstance()->display(
             '@databaseinventory/contactlog.html.twig',
             [
-                'itemtype'    => Agent::getType(),
+                'itemtype'    => Agent::class,
                 'contactlogs' => $listofctlog,
                 'canread'     => $agent->can($ID, READ),
             ],
diff --git a/inc/credential.class.php b/inc/credential.class.php
index c6c852e..f3ccef0 100644
--- a/inc/credential.class.php
+++ b/inc/credential.class.php
@@ -60,9 +60,9 @@
 
 class PluginDatabaseinventoryCredential extends CommonDBTM
 {
-    public $dohistory        = true;
+    public bool $dohistory   = true;
 
-    public static $rightname = 'database_inventory';
+    public static string $rightname = 'database_inventory';
 
     public static function canCreate(): bool
     {
diff --git a/inc/credentialtype.class.php b/inc/credentialtype.class.php
index 337eb85..d98d1fc 100644
--- a/inc/credentialtype.class.php
+++ b/inc/credentialtype.class.php
@@ -32,7 +32,7 @@
 
 class PluginDatabaseinventoryCredentialType extends CommonDropdown
 {
-    public static $rightname = 'dropdown';
+    public static string $rightname = 'dropdown';
 
     private const MYSQL       = 1;
 
diff --git a/inc/databaseparam.class.php b/inc/databaseparam.class.php
index 5da76f2..7e52f67 100644
--- a/inc/databaseparam.class.php
+++ b/inc/databaseparam.class.php
@@ -60,9 +60,9 @@
 
 class PluginDatabaseinventoryDatabaseParam extends CommonDBTM
 {
-    public $dohistory        = true;
+    public bool $dohistory   = true;
 
-    public static $rightname = 'database_inventory';
+    public static string $rightname = 'database_inventory';
 
     public static function getTypeName($nb = 0)
     {
diff --git a/inc/databaseparam_computergroup.class.php b/inc/databaseparam_computergroup.class.php
index 8e4b781..b946c62 100644
--- a/inc/databaseparam_computergroup.class.php
+++ b/inc/databaseparam_computergroup.class.php
@@ -61,21 +61,21 @@
 class PluginDatabaseinventoryDatabaseParam_ComputerGroup extends CommonDBRelation
 {
     // From CommonDBRelation
-    public static $itemtype_1 = 'PluginDatabaseinventoryDatabaseParam';
+    public static ?string $itemtype_1 = 'PluginDatabaseinventoryDatabaseParam';
 
-    public static $items_id_1 = 'plugin_databaseinventory_databaseparams_id';
+    public static ?string $items_id_1 = 'plugin_databaseinventory_databaseparams_id';
 
-    public static $itemtype_2 = 'PluginDatabaseinventoryComputerGroup';
+    public static ?string $itemtype_2 = 'PluginDatabaseinventoryComputerGroup';
 
-    public static $items_id_2 = 'plugin_databaseinventory_computergroups_id';
+    public static ?string $items_id_2 = 'plugin_databaseinventory_computergroups_id';
 
-    public static $checkItem_2_Rights = self::DONT_CHECK_ITEM_RIGHTS;
+    public static int $checkItem_2_Rights = self::DONT_CHECK_ITEM_RIGHTS;
 
-    public static $logs_for_item_2    = false;
+    public static bool $logs_for_item_2 = false;
 
-    public $auto_message_on_action    = false;
+    public bool $auto_message_on_action = false;
 
-    public static $rightname = 'database_inventory';
+    public static string $rightname = 'database_inventory';
 
     public static function canCreate(): bool
     {
diff --git a/inc/databaseparam_credential.class.php b/inc/databaseparam_credential.class.php
index 9de9615..791f1a4 100644
--- a/inc/databaseparam_credential.class.php
+++ b/inc/databaseparam_credential.class.php
@@ -61,21 +61,21 @@
 class PluginDatabaseinventoryDatabaseParam_Credential extends CommonDBRelation
 {
     // From CommonDBRelation
-    public static $itemtype_1 = 'PluginDatabaseinventoryDatabaseParam';
+    public static ?string $itemtype_1 = 'PluginDatabaseinventoryDatabaseParam';
 
-    public static $items_id_1 = 'plugin_databaseinventory_databaseparams_id';
+    public static ?string $items_id_1 = 'plugin_databaseinventory_databaseparams_id';
 
-    public static $itemtype_2 = 'PluginDatabaseinventoryCredential';
+    public static ?string $itemtype_2 = 'PluginDatabaseinventoryCredential';
 
-    public static $items_id_2 = 'plugin_databaseinventory_credentials_id';
+    public static ?string $items_id_2 = 'plugin_databaseinventory_credentials_id';
 
-    public static $checkItem_2_Rights = self::DONT_CHECK_ITEM_RIGHTS;
+    public static int $checkItem_2_Rights = self::DONT_CHECK_ITEM_RIGHTS;
 
-    public static $logs_for_item_2    = false;
+    public static bool $logs_for_item_2 = false;
 
-    public $auto_message_on_action    = false;
+    public bool $auto_message_on_action = false;
 
-    public static $rightname = 'database_inventory';
+    public static string $rightname = 'database_inventory';
 
     public static function canCreate(): bool
     {
diff --git a/inc/inventoryaction.class.php b/inc/inventoryaction.class.php
index f75fb39..89cd8d3 100644
--- a/inc/inventoryaction.class.php
+++ b/inc/inventoryaction.class.php
@@ -36,7 +36,7 @@ class PluginDatabaseinventoryInventoryAction extends CommonDBTM
 
     private const ENDPOINT_PARTIAL = 'now?';
 
-    public static $rightname = 'database_inventory_run_inventory';
+    public static string $rightname = 'database_inventory_run_inventory';
 
     public static function showMassiveActionsSubForm(MassiveAction $ma)
     {
@@ -57,49 +57,49 @@ public static function processMassiveActionsForOneItemtype(MassiveAction $ma, Co
             return;
         }
 
-        if (!Session::haveRight('database_inventory', PluginDatabaseinventoryProfile::RUN_DATABSE_INVENTORY)) {
+        if (!Session::haveRight(PluginDatabaseinventoryDatabaseParam::class, PluginDatabaseinventoryProfile::RUN_DATABSE_INVENTORY)) {
             foreach ($ids as $id) {
-                $ma->itemDone($item->getType(), $id, MassiveAction::ACTION_NORIGHT);
+                $ma->itemDone($item::class, $id, MassiveAction::ACTION_NORIGHT);
             }
 
             return;
         }
 
-        switch ($item->getType()) {
-            case Computer::getType():
+        switch ($item::class) {
+            case Computer::class:
                 foreach ($ids as $id) {
                     $computer = new Computer();
                     if (!$computer->getFromDB($id) || !$computer->can($id, READ)) {
-                        $ma->itemDone($item->getType(), $id, MassiveAction::ACTION_NORIGHT);
+                        $ma->itemDone($item::class, $id, MassiveAction::ACTION_NORIGHT);
                         continue;
                     }
 
                     if ($agent = self::findAgent($computer)) {
                         if (PluginDatabaseinventoryInventoryAction::runPartialInventory($agent, true)) {
-                            $ma->itemDone($item->getType(), $id, MassiveAction::ACTION_OK);
+                            $ma->itemDone($item::class, $id, MassiveAction::ACTION_OK);
                         } else {
-                            $ma->itemDone($item->getType(), $id, MassiveAction::ACTION_KO);
+                            $ma->itemDone($item::class, $id, MassiveAction::ACTION_KO);
                             $ma->addMessage($item->getErrorMessage(ERROR_ON_ACTION));
                         }
                     } else {
-                        $ma->itemDone($item->getType(), $id, MassiveAction::ACTION_KO);
+                        $ma->itemDone($item::class, $id, MassiveAction::ACTION_KO);
                         $ma->addMessage(__s('Agent not found for computer', 'databaseinventory') . "<a href='" . Computer::getFormURLWithID($id) . "'>" . $computer->getFriendlyName() . '</a>');
                     }
                 }
 
                 break;
-            case Agent::getType():
+            case Agent::class:
                 foreach ($ids as $id) {
                     $agent = new Agent();
                     if (!$agent->getFromDB($id) || !$agent->can($id, READ)) {
-                        $ma->itemDone($item->getType(), $id, MassiveAction::ACTION_NORIGHT);
+                        $ma->itemDone($item::class, $id, MassiveAction::ACTION_NORIGHT);
                         continue;
                     }
 
                     if (PluginDatabaseinventoryInventoryAction::runPartialInventory($agent, true)) {
-                        $ma->itemDone($item->getType(), $id, MassiveAction::ACTION_OK);
+                        $ma->itemDone($item::class, $id, MassiveAction::ACTION_OK);
                     } else {
-                        $ma->itemDone($item->getType(), $id, MassiveAction::ACTION_KO);
+                        $ma->itemDone($item::class, $id, MassiveAction::ACTION_KO);
                         $ma->addMessage($item->getErrorMessage(ERROR_ON_ACTION));
                     }
                 }
@@ -125,17 +125,17 @@ public static function runPartialInventory(Agent $agent, $fromMA = false)
             $response = $agent->requestAgent($endpoint);
             if ($fromMA) {
                 return true;
-            } else {
-                // not authorized
-                return self::handleAgentResponse($response, $endpoint);
             }
+
+            // not authorized
+            return self::handleAgentResponse($response, $endpoint);
         } catch (Exception $exception) {
             if ($fromMA) {
                 return false;
-            } else {
-                // not authorized
-                return ['answer' => $exception->getMessage()];
             }
+
+            // not authorized
+            return ['answer' => $exception->getMessage()];
         }
     }
 
@@ -151,20 +151,20 @@ private static function findAgent(Computer $item)
     {
         $agent     = new Agent();
         $has_agent = $agent->getFromDBByCrit([
-            'itemtype' => $item->getType(),
+            'itemtype' => $item::class,
             'items_id' => $item->fields['id'],
         ]);
 
         // if no agent has been found, check if there is a linked item, and find its agent
-        if (!$has_agent && $item->getType() == 'Computer') {
+        if (!$has_agent && $item::class == 'Computer') {
             $citem        = new Asset_PeripheralAsset();
             $has_relation = $citem->getFromDBByCrit([
-                'itemtype_peripheral' => $item->getType(),
+                'itemtype_peripheral' => $item::class,
                 'items_id_peripheral' => $item->fields['id'],
             ]);
             if ($has_relation) {
                 $has_agent = $agent->getFromDBByCrit([
-                    'itemtype' => Computer::getType(),
+                    'itemtype' => Computer::class,
                     'items_id' => $citem->fields['computers_id'],
                 ]);
             }
@@ -172,9 +172,9 @@ private static function findAgent(Computer $item)
 
         if ($has_agent) {
             return $agent;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     public static function postItemForm($item)
@@ -183,14 +183,14 @@ public static function postItemForm($item)
             return;
         }
 
-        if (!Session::haveRight("database_inventory", PluginDatabaseinventoryProfile::RUN_DATABSE_INVENTORY)) {
+        if (!Session::haveRight(PluginDatabaseinventoryDatabaseParam::class, PluginDatabaseinventoryProfile::RUN_DATABSE_INVENTORY)) {
             return;
         }
 
         /** @var array $CFG_GLPI */
         global $CFG_GLPI;
 
-        if ($item::getType() == Computer::getType() && $agent = self::findAgent($item)) {
+        if ($item::getType() == Computer::class && $agent = self::findAgent($item)) {
             $out = '<div class="mb-3 col-12 col-sm-6">';
             $out .= '<label class="form-label" >' . __s('Request database inventory', 'database inventory');
             $out .= '<i id="request_database_inventory" class="fas fa-sync" style="cursor: pointer;" title="' . __s('Ask agent to proceed a database inventory', 'databaseinventory') . '"></i>';
diff --git a/inc/profile.class.php b/inc/profile.class.php
index 715e174..e8b32dc 100644
--- a/inc/profile.class.php
+++ b/inc/profile.class.php
@@ -30,7 +30,7 @@
 
 class PluginDatabaseinventoryProfile extends Profile
 {
-    public static $rightname = 'profile';
+    public static string $rightname = 'profile';
 
     public const RUN_DATABSE_INVENTORY = 256;
 
@@ -43,7 +43,7 @@ private static function getAllRights()
     {
         return [
             [
-                'itemtype'  => PluginDatabaseinventoryDatabaseParam::getType(),
+                'itemtype'  => PluginDatabaseinventoryDatabaseParam::class,
                 'label'     => PluginDatabaseinventoryProfile::getTypeName(),
                 'field'     => 'database_inventory',
                 'rights'    => [
@@ -68,7 +68,7 @@ public function getRights($interface = 'central')
 
     public function getTabNameForItem(CommonGLPI $item, $withtemplate = 0)
     {
-        if ($item->getType() == 'Profile') {
+        if ($item::class == 'Profile') {
             return self::createTabEntry(self::getTypeName());
         }
 
diff --git a/inc/task.class.php b/inc/task.class.php
index d9ab62d..c758d4c 100644
--- a/inc/task.class.php
+++ b/inc/task.class.php
@@ -41,7 +41,7 @@ public static function inventoryGetParams(array $params)
         // only serve credentials for a database param actually reachable by the agent's computer
         $computer = $agent->getLinkedItem();
         if (
-            $computer::class !== Computer::getType()
+            $computer::class !== Computer::class
             || $computer->isNewItem()
             || !in_array($content->params_id, self::getAccessibleDatabaseParams($computer))
         ) {
@@ -143,7 +143,7 @@ public static function handleInventoryTask(array $params)
         $database_param_found = [];
 
         // only Computer type
-        if ($computer::class == Computer::getType() && !$computer->isNewItem()) {
+        if ($computer::class == Computer::class && !$computer->isNewItem()) {
             $database_param_found = self::getAccessibleDatabaseParams($computer);
         }
 
diff --git a/phpunit.xml b/phpunit.xml
new file mode 100644
index 0000000..ff4a929
--- /dev/null
+++ b/phpunit.xml
@@ -0,0 +1,7 @@
+<phpunit bootstrap="tests/bootstrap.php" colors="true" testdox="true">
+   <testsuites>
+      <testsuite name="Tests">
+         <directory>tests</directory>
+      </testsuite>
+   </testsuites>
+</phpunit>
\ No newline at end of file
diff --git a/setup.php b/setup.php
index 70b5122..f0c05da 100644
--- a/setup.php
+++ b/setup.php
@@ -31,10 +31,11 @@
 use function Safe\define;
 
 define('PLUGIN_DATABASEINVENTORY_VERSION', '1.1.4');
+
 // Minimal GLPI version, inclusive
-define('PLUGIN_DATABASEINVENTORY_MIN_GLPI', '11.0.0');
+define('PLUGIN_DATABASEINVENTORY_MIN_GLPI', '12.0.0');
 // Maximum GLPI version, exclusive
-define('PLUGIN_DATABASEINVENTORY_MAX_GLPI', '11.0.99');
+define('PLUGIN_DATABASEINVENTORY_MAX_GLPI', '12.0.99');
 
 /**
  * Init hooks of the plugin.
@@ -64,7 +65,7 @@ function plugin_init_databaseinventory()
         'Agent'    => 'cleanAgentFromContactLog',
     ];
 
-    if (Session::haveRight('config', UPDATE)) {
+    if (Session::haveRight(Config::$rightname, UPDATE)) {
         $PLUGIN_HOOKS['menu_toadd']['databaseinventory'] = [
             'admin' => 'PluginDatabaseinventoryMenu',
         ];
@@ -89,7 +90,7 @@ function plugin_init_databaseinventory()
 function plugin_version_databaseinventory()
 {
     return [
-        'name'         => __s('Database Inventory', 'databaseinventory'),
+        'name'         => 'Database Inventory',
         'version'      => PLUGIN_DATABASEINVENTORY_VERSION,
         'author'       => '<a href="https://services.glpi-network.com">Teclib\'</a>',
         'license'      => 'GPL v3',
diff --git a/templates/computergroupstatic.html.twig b/templates/computergroupstatic.html.twig
index e41455d..5e49e22 100644
--- a/templates/computergroupstatic.html.twig
+++ b/templates/computergroupstatic.html.twig
@@ -32,7 +32,6 @@
 {% block more_fields %}
     {% if canadd %}
         <form method='POST' enctype='multipart/form-data' action=''>
-            <input type="hidden" name="_glpi_csrf_token" value="{{ csrf_token() }}" />
             <div class="d-flex">
                 {{ fields.dropdownField(
                     "Computer",
@@ -68,7 +67,6 @@
         {% if computerslist is not empty %}
             <form name="massaction_{{ rand }}" id="massaction_{{ rand }}" method="post"
             action="{{ path('/front/massiveaction.php') }}" data-submit-once>
-            <input type="hidden" name="_glpi_csrf_token" value="{{ csrf_token() }}" />
             <input type="hidden" name="action" value="purge">
             <input type="hidden" name="action_name" value="purge">
             <input type="hidden" name="processor" value="MassiveAction">
diff --git a/templates/databaseparam_computergroup.html.twig b/templates/databaseparam_computergroup.html.twig
index c279036..96f62c1 100644
--- a/templates/databaseparam_computergroup.html.twig
+++ b/templates/databaseparam_computergroup.html.twig
@@ -32,7 +32,6 @@
 {% block more_fields %}
     {% if canadd %}
         <form method='POST' enctype='multipart/form-data' action=''>
-            <input type="hidden" name="_glpi_csrf_token" value="{{ csrf_token() }}" />
             <div class="d-flex">
                 {{ fields.dropdownField(
                     compgroupclass,
@@ -68,7 +67,6 @@
         {% if compgrouplist is not empty %}
             <form name="massaction_{{ rand }}" id="massaction_{{ rand }}" method="post"
             action="{{ path('/front/massiveaction.php') }}" data-submit-once>
-            <input type="hidden" name="_glpi_csrf_token" value="{{ csrf_token() }}" />
             <input type="hidden" name="action" value="purge">
             <input type="hidden" name="action_name" value="purge">
             <input type="hidden" name="processor" value="MassiveAction">
diff --git a/templates/databaseparam_credential.html.twig b/templates/databaseparam_credential.html.twig
index 2c2bb30..0281ae1 100644
--- a/templates/databaseparam_credential.html.twig
+++ b/templates/databaseparam_credential.html.twig
@@ -32,7 +32,6 @@
 {% block more_fields %}
     {% if canadd %}
         <form method='POST' enctype='multipart/form-data' action=''>
-            <input type="hidden" name="_glpi_csrf_token" value="{{ csrf_token() }}" />
             <div class="d-flex">
                 {{ fields.dropdownField(
                     credentialclass,
@@ -68,7 +67,6 @@
         {% if credentiallist is not empty %}
             <form name="massaction_{{ rand }}" id="massaction_{{ rand }}" method="post"
             action="{{ path('/front/massiveaction.php') }}" data-submit-once>
-            <input type="hidden" name="_glpi_csrf_token" value="{{ csrf_token() }}" />
             <input type="hidden" name="action" value="purge">
             <input type="hidden" name="action_name" value="purge">
             <input type="hidden" name="processor" value="MassiveAction">
diff --git a/tests/DatabaseInventoryTestCase.php b/tests/DatabaseInventoryTestCase.php
new file mode 100644
index 0000000..cfc37de
--- /dev/null
+++ b/tests/DatabaseInventoryTestCase.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * -------------------------------------------------------------------------
+ * DatabaseInventory plugin for GLPI
+ * -------------------------------------------------------------------------
+ *
+ * LICENSE
+ *
+ * This file is part of DatabaseInventory.
+ *
+ * DatabaseInventory is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DatabaseInventory is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with DatabaseInventory. If not, see <http://www.gnu.org/licenses/>.
+ * -------------------------------------------------------------------------
+ * @copyright Copyright (C) 2021-2023 by Teclib'.
+ * @license   GPLv3 https://www.gnu.org/licenses/gpl-3.0.html
+ * @link      https://services.glpi-network.com
+ * -------------------------------------------------------------------------
+ */
+
+namespace GlpiPlugin\DatabaseInventory\Tests;
+
+use Glpi\Tests\DbTestCase;
+
+abstract class DatabaseInventoryTestCase extends DbTestCase {}
diff --git a/tests/Units/ComputerGroupTest.php b/tests/Units/ComputerGroupTest.php
new file mode 100644
index 0000000..66d330c
--- /dev/null
+++ b/tests/Units/ComputerGroupTest.php
@@ -0,0 +1,135 @@
+<?php
+
+/**
+ * -------------------------------------------------------------------------
+ * DatabaseInventory plugin for GLPI
+ * -------------------------------------------------------------------------
+ *
+ * LICENSE
+ *
+ * This file is part of DatabaseInventory.
+ *
+ * DatabaseInventory is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DatabaseInventory is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with DatabaseInventory. If not, see <http://www.gnu.org/licenses/>.
+ * -------------------------------------------------------------------------
+ * @copyright Copyright (C) 2021-2023 by Teclib'.
+ * @license   GPLv3 https://www.gnu.org/licenses/gpl-3.0.html
+ * @link      https://services.glpi-network.com
+ * -------------------------------------------------------------------------
+ */
+
+namespace GlpiPlugin\DatabaseInventory\Tests\Units;
+
+use Computer;
+use GlpiPlugin\DatabaseInventory\Tests\DatabaseInventoryTestCase;
+use PluginDatabaseinventoryComputerGroup;
+use PluginDatabaseinventoryComputerGroupDynamic;
+use PluginDatabaseinventoryComputerGroupStatic;
+use PluginDatabaseinventoryDatabaseParam;
+use PluginDatabaseinventoryDatabaseParam_ComputerGroup;
+
+final class ComputerGroupTest extends DatabaseInventoryTestCase
+{
+    public function testCountStaticItem(): void
+    {
+        $this->login();
+
+        $group = $this->createItem(PluginDatabaseinventoryComputerGroup::class, [
+            'name' => 'Static group test',
+        ]);
+
+        $this->assertEquals(0, $group->countStaticItem());
+
+        $computer = $this->createItem(Computer::class, [
+            'name'        => 'Test computer for group',
+            'entities_id' => 0,
+        ]);
+
+        $this->createItem(PluginDatabaseinventoryComputerGroupStatic::class, [
+            'plugin_databaseinventory_computergroups_id' => $group->getID(),
+            'computers_id'                                => $computer->getID(),
+        ]);
+
+        $this->assertEquals(1, $group->countStaticItem());
+    }
+
+    public function testCountDynamicItem(): void
+    {
+        $this->login();
+
+        $group = $this->createItem(PluginDatabaseinventoryComputerGroup::class, [
+            'name' => 'Dynamic group test',
+        ]);
+
+        $this->assertEquals(0, $group->countDynamicItem());
+
+        $computer = $this->createItem(Computer::class, [
+            'name'        => 'Test computer for dynamic group',
+            'entities_id' => getItemByTypeName('Entity', '_test_root_entity', true),
+        ]);
+
+        $this->createItem(PluginDatabaseinventoryComputerGroupDynamic::class, [
+            'plugin_databaseinventory_computergroups_id' => $group->getID(),
+            'search'                                       => json_encode([
+                'criteria' => [
+                    [
+                        'field'      => 2, // Computer ID
+                        'searchtype' => 'contains',
+                        'value'      => $computer->getID(),
+                    ],
+                ],
+            ]),
+        ]);
+
+        $this->assertEquals(1, $group->countDynamicItem());
+    }
+
+    public function testPostPurgeItemDeletesRelatedData(): void
+    {
+        $this->login();
+
+        $group = $this->createItem(PluginDatabaseinventoryComputerGroup::class, [
+            'name' => 'Group to purge',
+        ]);
+
+        $computer = $this->createItem(Computer::class, [
+            'name'        => 'Computer for purged group',
+            'entities_id' => 0,
+        ]);
+
+        $static = $this->createItem(PluginDatabaseinventoryComputerGroupStatic::class, [
+            'plugin_databaseinventory_computergroups_id' => $group->getID(),
+            'computers_id'                                => $computer->getID(),
+        ]);
+
+        $dynamic = $this->createItem(PluginDatabaseinventoryComputerGroupDynamic::class, [
+            'plugin_databaseinventory_computergroups_id' => $group->getID(),
+            'search'                                       => json_encode(['criteria' => []]),
+        ]);
+
+        $dbparam = $this->createItem(PluginDatabaseinventoryDatabaseParam::class, [
+            'name' => 'Param linked to purged group',
+        ]);
+
+        $link = $this->createItem(PluginDatabaseinventoryDatabaseParam_ComputerGroup::class, [
+            'plugin_databaseinventory_databaseparams_id' => $dbparam->getID(),
+            'plugin_databaseinventory_computergroups_id' => $group->getID(),
+        ]);
+
+        $this->deleteItem(PluginDatabaseinventoryComputerGroup::class, $group->getID(), true);
+
+        $this->assertFalse((new PluginDatabaseinventoryComputerGroupStatic())->getFromDB($static->getID()));
+        $this->assertFalse((new PluginDatabaseinventoryComputerGroupDynamic())->getFromDB($dynamic->getID()));
+        $this->assertFalse((new PluginDatabaseinventoryDatabaseParam_ComputerGroup())->getFromDB($link->getID()));
+    }
+}
diff --git a/tests/Units/CredentialTest.php b/tests/Units/CredentialTest.php
new file mode 100644
index 0000000..07d2048
--- /dev/null
+++ b/tests/Units/CredentialTest.php
@@ -0,0 +1,108 @@
+<?php
+
+/**
+ * -------------------------------------------------------------------------
+ * DatabaseInventory plugin for GLPI
+ * -------------------------------------------------------------------------
+ *
+ * LICENSE
+ *
+ * This file is part of DatabaseInventory.
+ *
+ * DatabaseInventory is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DatabaseInventory is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with DatabaseInventory. If not, see <http://www.gnu.org/licenses/>.
+ * -------------------------------------------------------------------------
+ * @copyright Copyright (C) 2021-2023 by Teclib'.
+ * @license   GPLv3 https://www.gnu.org/licenses/gpl-3.0.html
+ * @link      https://services.glpi-network.com
+ * -------------------------------------------------------------------------
+ */
+
+namespace GlpiPlugin\DatabaseInventory\Tests\Units;
+
+use GLPIKey;
+use GlpiPlugin\DatabaseInventory\Tests\DatabaseInventoryTestCase;
+use PluginDatabaseinventoryCredential;
+use PluginDatabaseinventoryDatabaseParam;
+use PluginDatabaseinventoryDatabaseParam_Credential;
+
+final class CredentialTest extends DatabaseInventoryTestCase
+{
+    public function testPasswordIsEncryptedOnAdd(): void
+    {
+        $this->login();
+
+        $credential = $this->createItem(
+            PluginDatabaseinventoryCredential::class,
+            [
+                'name'     => 'Test credential',
+                'login'    => 'glpi',
+                'password' => 'secret_password',
+                'port'     => 3306,
+            ],
+            ['password'],
+        );
+
+        $this->assertNotSame('secret_password', $credential->fields['password']);
+        $this->assertSame('secret_password', (new GLPIKey())->decrypt($credential->fields['password']));
+    }
+
+    public function testBlankPasswordFlagResetsPasswordOnUpdate(): void
+    {
+        $this->login();
+
+        $credential = $this->createItem(
+            PluginDatabaseinventoryCredential::class,
+            [
+                'name'     => 'Credential to blank',
+                'login'    => 'glpi',
+                'password' => 'secret_password',
+            ],
+            ['password'],
+        );
+
+        $credential = $this->updateItem(
+            PluginDatabaseinventoryCredential::class,
+            $credential->getID(),
+            [
+                '_blank_passwd' => true,
+            ],
+            ['_blank_passwd'],
+        );
+
+        $this->assertSame('', $credential->fields['password']);
+    }
+
+    public function testPostPurgeItemDeletesRelatedData(): void
+    {
+        $this->login();
+
+        $credential = $this->createItem(PluginDatabaseinventoryCredential::class, [
+            'name'  => 'Credential to purge',
+            'login' => 'glpi',
+        ]);
+
+        $dbparam = $this->createItem(PluginDatabaseinventoryDatabaseParam::class, [
+            'name' => 'Param linked to purged credential',
+        ]);
+
+        $link = $this->createItem(PluginDatabaseinventoryDatabaseParam_Credential::class, [
+            'plugin_databaseinventory_databaseparams_id' => $dbparam->getID(),
+            'plugin_databaseinventory_credentials_id'    => $credential->getID(),
+        ]);
+
+        $this->deleteItem(PluginDatabaseinventoryCredential::class, $credential->getID(), true);
+
+        $this->assertFalse((new PluginDatabaseinventoryDatabaseParam_Credential())->getFromDB($link->getID()));
+    }
+}
diff --git a/tests/Units/CredentialTypeTest.php b/tests/Units/CredentialTypeTest.php
new file mode 100644
index 0000000..90a04fb
--- /dev/null
+++ b/tests/Units/CredentialTypeTest.php
@@ -0,0 +1,72 @@
+<?php
+
+/**
+ * -------------------------------------------------------------------------
+ * DatabaseInventory plugin for GLPI
+ * -------------------------------------------------------------------------
+ *
+ * LICENSE
+ *
+ * This file is part of DatabaseInventory.
+ *
+ * DatabaseInventory is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DatabaseInventory is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with DatabaseInventory. If not, see <http://www.gnu.org/licenses/>.
+ * -------------------------------------------------------------------------
+ * @copyright Copyright (C) 2021-2023 by Teclib'.
+ * @license   GPLv3 https://www.gnu.org/licenses/gpl-3.0.html
+ * @link      https://services.glpi-network.com
+ * -------------------------------------------------------------------------
+ */
+
+namespace GlpiPlugin\DatabaseInventory\Tests\Units;
+
+use GlpiPlugin\DatabaseInventory\Tests\DatabaseInventoryTestCase;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PluginDatabaseinventoryCredentialType;
+
+final class CredentialTypeTest extends DatabaseInventoryTestCase
+{
+    public function testPreDeleteItemPreventsRemoval(): void
+    {
+        $this->login();
+
+        $type = new PluginDatabaseinventoryCredentialType();
+        $this->assertTrue($type->getFromDBByCrit(['name' => 'MySQL']));
+
+        $this->assertFalse($type->pre_deleteItem());
+        $this->hasSessionMessages(ERROR, ['You cannot remove this type: MySQL']);
+    }
+
+    public static function moduleKeyProvider(): iterable
+    {
+        yield [1, 'mysql'];
+        yield [2, 'oracle'];
+        yield [3, 'db2'];
+        yield [4, 'mssql'];
+        yield [5, 'postgresql'];
+        yield [6, 'mongodb'];
+    }
+
+    #[DataProvider('moduleKeyProvider')]
+    public function testGetModuleKey(int $id, string $name): void
+    {
+        $this->assertSame($name, PluginDatabaseinventoryCredentialType::getModuleKeyById($id));
+        $this->assertSame($id, PluginDatabaseinventoryCredentialType::getModuleKeyByName($name));
+    }
+
+    public function testGetModuleKeyReturnsNullForUnknownValues(): void
+    {
+        $this->assertNull(PluginDatabaseinventoryCredentialType::getModuleKeyById(999));
+        $this->assertNull(PluginDatabaseinventoryCredentialType::getModuleKeyByName('unknown'));
+    }
+}
diff --git a/tests/Units/DatabaseParamTest.php b/tests/Units/DatabaseParamTest.php
new file mode 100644
index 0000000..787231b
--- /dev/null
+++ b/tests/Units/DatabaseParamTest.php
@@ -0,0 +1,92 @@
+<?php
+
+/**
+ * -------------------------------------------------------------------------
+ * DatabaseInventory plugin for GLPI
+ * -------------------------------------------------------------------------
+ *
+ * LICENSE
+ *
+ * This file is part of DatabaseInventory.
+ *
+ * DatabaseInventory is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DatabaseInventory is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with DatabaseInventory. If not, see <http://www.gnu.org/licenses/>.
+ * -------------------------------------------------------------------------
+ * @copyright Copyright (C) 2021-2023 by Teclib'.
+ * @license   GPLv3 https://www.gnu.org/licenses/gpl-3.0.html
+ * @link      https://services.glpi-network.com
+ * -------------------------------------------------------------------------
+ */
+
+namespace GlpiPlugin\DatabaseInventory\Tests\Units;
+
+use GlpiPlugin\DatabaseInventory\Tests\DatabaseInventoryTestCase;
+use PluginDatabaseinventoryCredential;
+use PluginDatabaseinventoryCredentialType;
+use PluginDatabaseinventoryDatabaseParam;
+use PluginDatabaseinventoryDatabaseParam_Credential;
+
+final class DatabaseParamTest extends DatabaseInventoryTestCase
+{
+    public function testGetCredentialTypeLinkedReturnsLinkedModuleKeys(): void
+    {
+        $this->login();
+
+        $mysql_type = new PluginDatabaseinventoryCredentialType();
+        $this->assertTrue($mysql_type->getFromDBByCrit(['name' => 'MySQL']));
+
+        $postgresql_type = new PluginDatabaseinventoryCredentialType();
+        $this->assertTrue($postgresql_type->getFromDBByCrit(['name' => 'PostgreSQL']));
+
+        $mysql_credential = $this->createItem(PluginDatabaseinventoryCredential::class, [
+            'name'                                          => 'MySQL credential',
+            'login'                                          => 'root',
+            'plugin_databaseinventory_credentialtypes_id'    => $mysql_type->getID(),
+        ]);
+
+        $postgresql_credential = $this->createItem(PluginDatabaseinventoryCredential::class, [
+            'name'                                          => 'PostgreSQL credential',
+            'login'                                          => 'postgres',
+            'plugin_databaseinventory_credentialtypes_id'    => $postgresql_type->getID(),
+        ]);
+
+        $dbparam = $this->createItem(PluginDatabaseinventoryDatabaseParam::class, [
+            'name' => 'Param with credentials',
+        ]);
+
+        $this->createItem(PluginDatabaseinventoryDatabaseParam_Credential::class, [
+            'plugin_databaseinventory_databaseparams_id' => $dbparam->getID(),
+            'plugin_databaseinventory_credentials_id'    => $mysql_credential->getID(),
+        ]);
+
+        $this->createItem(PluginDatabaseinventoryDatabaseParam_Credential::class, [
+            'plugin_databaseinventory_databaseparams_id' => $dbparam->getID(),
+            'plugin_databaseinventory_credentials_id'    => $postgresql_credential->getID(),
+        ]);
+
+        $types = $dbparam->getCredentialTypeLinked();
+
+        $this->assertEquals(['mysql', 'postgresql'], $types);
+    }
+
+    public function testGetCredentialTypeLinkedReturnsEmptyArrayWithoutCredentials(): void
+    {
+        $this->login();
+
+        $dbparam = $this->createItem(PluginDatabaseinventoryDatabaseParam::class, [
+            'name' => 'Param without credentials',
+        ]);
+
+        $this->assertSame([], $dbparam->getCredentialTypeLinked());
+    }
+}
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
new file mode 100644
index 0000000..44c7329
--- /dev/null
+++ b/tests/bootstrap.php
@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * -------------------------------------------------------------------------
+ * DatabaseInventory plugin for GLPI
+ * -------------------------------------------------------------------------
+ *
+ * LICENSE
+ *
+ * This file is part of DatabaseInventory.
+ *
+ * DatabaseInventory is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DatabaseInventory is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with DatabaseInventory. If not, see <http://www.gnu.org/licenses/>.
+ * -------------------------------------------------------------------------
+ * @copyright Copyright (C) 2014-2023 by Teclib'.
+ * @license   GPLv3 https://www.gnu.org/licenses/gpl-3.0.html
+ * @license   GPLv2 https://www.gnu.org/licenses/gpl-2.0.html
+ * @link      https://services.glpi-network.com
+ * @link      https://github.com/pluginsGLPI/databaseinventory
+ * -------------------------------------------------------------------------
+ */
+
+require __DIR__ . '/../../../tests/bootstrap.php';
+require __DIR__ . '/../vendor/autoload.php';
+
+if (!Plugin::isPluginActive('databaseinventory')) {
+    throw new RuntimeException('Plugin databaseinventory is not active in the test database');
+}