diff --git a/tests/CoreBundle/Migrations/MigrationTest.php b/tests/CoreBundle/Migrations/MigrationTest.php
new file mode 100644
index 0000000000..8741167618
--- /dev/null
+++ b/tests/CoreBundle/Migrations/MigrationTest.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\Tests\CoreBundle\Migrations;
+
+use Chamilo\Tests\ChamiloTestTrait;
+use Symfony\Bundle\FrameworkBundle\Console\Application;
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+use Symfony\Component\Console\Tester\CommandTester;
+
+class MigrationTest extends KernelTestCase
+{
+    use ChamiloTestTrait;
+
+    public function testMigrations(): void
+    {
+        $kernel = static::createKernel();
+        $application = new Application($kernel);
+
+        $command = $application->find('doctrine:migrations:status');
+        $commandTester = new CommandTester($command);
+        $commandTester->execute([
+            // pass arguments to the helper
+            '--no-interaction',
+        ]);
+
+        $output = $commandTester->getDisplay();
+        $this->assertStringContainsString('Chamilo\CoreBundle\Migrations\Schema\V200', $output);
+    }
+}
diff --git a/tests/CoreBundle/Repository/MessageRepositoryTest.php b/tests/CoreBundle/Repository/MessageRepositoryTest.php
index 4210786f59..8c165f1a54 100644
--- a/tests/CoreBundle/Repository/MessageRepositoryTest.php
+++ b/tests/CoreBundle/Repository/MessageRepositoryTest.php
@@ -47,6 +47,9 @@ class MessageRepositoryTest extends AbstractApiTest
         $this->assertHasNoEntityViolations($message);
         $messageRepo->update($message);
 
+        $transport = $this->getContainer()->get('messenger.transport.sync_priority_high');
+        $this->assertCount(1, $transport->getSent());
+
         // 1. Message exists in the inbox.
         $count = $messageRepo->count(['msgType' => Message::MESSAGE_TYPE_INBOX]);
         $this->assertSame(1, $count);
diff --git a/tests/CoreBundle/Repository/Node/AccessUrlRepositoryTest.php b/tests/CoreBundle/Repository/Node/AccessUrlRepositoryTest.php
index 9edb51ae5b..80f74154d2 100644
--- a/tests/CoreBundle/Repository/Node/AccessUrlRepositoryTest.php
+++ b/tests/CoreBundle/Repository/Node/AccessUrlRepositoryTest.php
@@ -69,7 +69,7 @@ class AccessUrlRepositoryTest extends KernelTestCase
         $this->assertTrue($accessUrl->hasUser($user));
         $this->assertSame($accessUrl->getId(), $accessUrl->getResourceIdentifier());
 
-        $this->assertSame(null, $accessUrl->getLimitCourses());
+        $this->assertNull($accessUrl->getLimitCourses());
         $this->assertSame(2, $repo->count([]));
         $this->assertSame(0, $accessUrl->getSettings()->count());
     }
diff --git a/tests/CoreBundle/Tool/HandlerCollectionTest.php b/tests/CoreBundle/Tool/HandlerCollectionTest.php
index 4df1f7cebd..20d97487c9 100644
--- a/tests/CoreBundle/Tool/HandlerCollectionTest.php
+++ b/tests/CoreBundle/Tool/HandlerCollectionTest.php
@@ -6,7 +6,6 @@ declare(strict_types=1);
 
 namespace Chamilo\Tests\CoreBundle\Tool;
 
-use Chamilo\CoreBundle\Repository\ResourceRepository;
 use Chamilo\CoreBundle\Tool\AbstractTool;
 use Chamilo\CoreBundle\Tool\Agenda;
 use Chamilo\CoreBundle\Tool\HandlerCollection;
@@ -51,27 +50,6 @@ class HandlerCollectionTest extends AbstractApiTest
         $handler = self::getContainer()->get(HandlerCollection::class);
         $collection = $handler->getCollection();
 
-        foreach ($collection as $tool) {
-            $name = $tool->getName();
-            $this->assertNotEmpty($name);
-
-            $types = $tool->getResourceTypes();
-            //$icon = $tool->getIcon();
-            //$this->assertNotEmpty($icon, sprintf("Icons for tool %s doesnt exists", $name));
-            $em = $this->getManager();
-            /*if (!empty($types)) {
-                foreach ($types as $entityName) {
-                    $repo = $em->getRepository($entityName);
-                    //var_dump($repo->getClassName());
-                    $msg = sprintf(
-                        'Error in tool %s, entity: %s repo: %s not instance of ResourceRepository',
-                        $name,
-                        $entityName,
-                        \get_class($repo)
-                    );
-                    $this->assertInstanceOf(ResourceRepository::class, $repo, $msg);
-                }
-            }*/
-        }
+        $this->assertTrue(\count($collection) > 0);
     }
 }
diff --git a/tests/CoreBundle/Tool/ToolChainTest.php b/tests/CoreBundle/Tool/ToolChainTest.php
index dec4cbe51e..df316db101 100644
--- a/tests/CoreBundle/Tool/ToolChainTest.php
+++ b/tests/CoreBundle/Tool/ToolChainTest.php
@@ -10,6 +10,7 @@ use Chamilo\CoreBundle\Entity\AccessUrl;
 use Chamilo\CoreBundle\Entity\BranchSync;
 use Chamilo\CoreBundle\Entity\PersonalFile;
 use Chamilo\CoreBundle\Entity\ResourceType;
+use Chamilo\CoreBundle\Entity\Tool;
 use Chamilo\CoreBundle\Tool\AbstractTool;
 use Chamilo\CoreBundle\Tool\GlobalTool;
 use Chamilo\CoreBundle\Tool\ToolChain;
@@ -57,6 +58,23 @@ class ToolChainTest extends AbstractApiTest
 
         $type = $toolChain->getResourceTypeNameByEntity(PersonalFile::class);
         $this->assertSame($typeName, $type);
+
+        $type = $toolChain->getResourceTypeNameByEntity('test');
+        $this->assertNull($type);
+    }
+
+    public function testSetToolPermissions(): void
+    {
+        self::bootKernel();
+
+        $toolChain = self::getContainer()->get(ToolChain::class);
+
+        $em = $this->getManager();
+        $toolRepo = $em->getRepository(Tool::class);
+        $agendaTool = $toolRepo->findOneBy(['name' => 'agenda']);
+        $this->assertNotNull($agendaTool);
+
+        $toolChain->setToolPermissions($agendaTool);
     }
 
     public function testGetTools(): void
@@ -65,9 +83,35 @@ class ToolChainTest extends AbstractApiTest
 
         $toolChain = self::getContainer()->get(ToolChain::class);
 
-        $count = $toolChain->getTools();
+        $tools = $toolChain->getTools();
+
+        foreach ($tools as $tool) {
+            $name = $tool->getName();
+            $this->assertNotEmpty($name);
+
+            $link = $tool->getLink();
+            $this->assertNotEmpty($link, sprintf('Link for tool %s is empty', $name));
+
+            $types = $tool->getResourceTypes();
+            //$icon = $tool->getIcon();
+            //$this->assertNotEmpty($icon, sprintf("Icons for tool %s doesnt exists", $name));
+            //$em = $this->getManager();
+            /*if (!empty($types)) {
+                foreach ($types as $entityName) {
+                    $repo = $em->getRepository($entityName);
+                    //var_dump($repo->getClassName());
+                    $msg = sprintf(
+                        'Error in tool %s, entity: %s repo: %s not instance of ResourceRepository',
+                        $name,
+                        $entityName,
+                        \get_class($repo)
+                    );
+                    $this->assertInstanceOf(ResourceRepository::class, $repo, $msg);
+                }
+            }*/
+        }
 
-        $this->assertTrue(\count($count) > 0);
+        $this->assertTrue(\count($tools) > 0);
     }
 
     public function testCreateTools(): void
diff --git a/tests/CourseBundle/Repository/CDocumentRepositoryTest.php b/tests/CourseBundle/Repository/CDocumentRepositoryTest.php
index a849ae470f..9b944ca0e8 100644
--- a/tests/CourseBundle/Repository/CDocumentRepositoryTest.php
+++ b/tests/CourseBundle/Repository/CDocumentRepositoryTest.php
@@ -19,8 +19,9 @@ class CDocumentRepositoryTest extends AbstractApiTest
 {
     use ChamiloTestTrait;
 
-    public function testGetDocumentsAsAdmin(): void
+    public function testGetDocuments(): void
     {
+        // Test as admin.
         $token = $this->getUserToken([]);
         $response = $this->createClientWithCredentials($token)->request('GET', '/api/documents');
         $this->assertResponseIsSuccessful();
@@ -38,6 +39,8 @@ class CDocumentRepositoryTest extends AbstractApiTest
 
         $this->assertCount(0, $response->toArray()['hydra:member']);
         $this->assertMatchesResourceCollectionJsonSchema(CDocument::class);
+
+        // Test as user
     }
 
     public function testCreateFolder(): void
@@ -185,6 +188,15 @@ class CDocumentRepositoryTest extends AbstractApiTest
 
         // Test access with another user. He cannot see the file, no cid is pass as a parameter.
         $this->createUser('another');
+
+        $token = $this->getUserToken(
+            [
+                'username' => 'another',
+                'password' => 'another',
+            ],
+            true
+        );
+
         $client = $this->getClientWithGuiCredentials('another', 'another');
         $client->request(
             'GET',
@@ -195,6 +207,15 @@ class CDocumentRepositoryTest extends AbstractApiTest
         );
         $this->assertResponseStatusCodeSame(403); // Unauthorized
 
+        $this->createClientWithCredentials($token)->request('GET', '/api/documents', [
+            'query' => [
+                'loadNode' => 1,
+                'resourceNode.parent' => $course->getResourceNode()->getId(),
+                'cid' => $courseId,
+            ],
+        ]);
+        $this->assertResponseStatusCodeSame(403); // Unauthorized
+
         // Test access with another user. He CAN see the file, the cid is pass as a parameter
         // and the course is open to the world by default.
         $client->request(
@@ -366,13 +387,14 @@ class CDocumentRepositoryTest extends AbstractApiTest
 
         $document = (new CDocument())
             ->setFiletype('file')
-            ->setTitle('title')
+            ->setTitle('title 123')
             ->setParent($course)
         ;
 
         $documentRepo->addResourceNode($document, $admin, $course);
 
         $this->assertInstanceOf(ResourceNode::class, $document->getResourceNode());
+        $this->assertSame('title 123', (string) $document);
     }
 
     public function testSetVisibility(): void