diff --git a/module/CLI/test/Factory/InstallApplicationFactoryTest.php b/module/CLI/test/Factory/InstallApplicationFactoryTest.php
index 35820bba..c7e87bc7 100644
--- a/module/CLI/test/Factory/InstallApplicationFactoryTest.php
+++ b/module/CLI/test/Factory/InstallApplicationFactoryTest.php
@@ -1,6 +1,4 @@
 <?php
-declare(strict_types=1);
-
 namespace ShlinkioTest\Shlink\CLI\Factory;
 
 use PHPUnit\Framework\TestCase;
diff --git a/module/Core/src/Entity/Tag.php b/module/Core/src/Entity/Tag.php
index 47123ff9..ba212ebc 100644
--- a/module/Core/src/Entity/Tag.php
+++ b/module/Core/src/Entity/Tag.php
@@ -20,6 +20,11 @@ class Tag extends AbstractEntity implements \JsonSerializable
      */
     protected $name;
 
+    public function __construct($name = null)
+    {
+        $this->name = $name;
+    }
+
     /**
      * @return string
      */
diff --git a/module/Core/test/Service/Tag/TagServiceTest.php b/module/Core/test/Service/Tag/TagServiceTest.php
index 2a629c4f..d111afbb 100644
--- a/module/Core/test/Service/Tag/TagServiceTest.php
+++ b/module/Core/test/Service/Tag/TagServiceTest.php
@@ -1,6 +1,4 @@
 <?php
-declare(strict_types=1);
-
 namespace ShlinkioTest\Shlink\Core\Service\Tag;
 
 use Doctrine\ORM\EntityManagerInterface;
diff --git a/module/Rest/test/Action/ListTagsActionTest.php b/module/Rest/test/Action/ListTagsActionTest.php
new file mode 100644
index 00000000..cf768843
--- /dev/null
+++ b/module/Rest/test/Action/ListTagsActionTest.php
@@ -0,0 +1,50 @@
+<?php
+namespace ShlinkioTest\Shlink\Rest\Action;
+
+use Interop\Http\ServerMiddleware\DelegateInterface;
+use PHPUnit\Framework\TestCase;
+use Prophecy\Prophecy\MethodProphecy;
+use Prophecy\Prophecy\ObjectProphecy;
+use Shlinkio\Shlink\Core\Entity\Tag;
+use Shlinkio\Shlink\Core\Service\Tag\TagServiceInterface;
+use Shlinkio\Shlink\Rest\Action\ListTagsAction;
+use Zend\Diactoros\ServerRequestFactory;
+
+class ListTagsActionTest extends TestCase
+{
+    /**
+     * @var ListTagsAction
+     */
+    private $action;
+    /**
+     * @var ObjectProphecy
+     */
+    private $tagService;
+
+    public function setUp()
+    {
+        $this->tagService = $this->prophesize(TagServiceInterface::class);
+        $this->action = new ListTagsAction($this->tagService->reveal());
+    }
+
+    /**
+     * @test
+     */
+    public function returnsDataFromService()
+    {
+        /** @var MethodProphecy $listTags */
+        $listTags = $this->tagService->listTags()->willReturn([new Tag('foo'), new Tag('bar')]);
+
+        $resp = $this->action->process(
+            ServerRequestFactory::fromGlobals(),
+            $this->prophesize(DelegateInterface::class)->reveal()
+        );
+
+        $this->assertEquals([
+            'tags' => [
+                'data' => ['foo', 'bar'],
+            ],
+        ], \json_decode((string) $resp->getBody(), true));
+        $listTags->shouldHaveBeenCalled();
+    }
+}