diff --git a/module/Rest/test/Action/EditTagsActionTest.php b/module/Rest/test/Action/EditTagsActionTest.php
new file mode 100644
index 00000000..b0813519
--- /dev/null
+++ b/module/Rest/test/Action/EditTagsActionTest.php
@@ -0,0 +1,76 @@
+<?php
+namespace ShlinkioTest\Shlink\Rest\Action;
+
+use PHPUnit_Framework_TestCase as TestCase;
+use Prophecy\Prophecy\ObjectProphecy;
+use Shlinkio\Shlink\Core\Entity\ShortUrl;
+use Shlinkio\Shlink\Core\Exception\InvalidShortCodeException;
+use Shlinkio\Shlink\Core\Service\ShortUrlService;
+use Shlinkio\Shlink\Rest\Action\EditTagsAction;
+use Zend\Diactoros\Response;
+use Zend\Diactoros\ServerRequestFactory;
+use Zend\I18n\Translator\Translator;
+
+class EditTagsActionTest extends TestCase
+{
+    /**
+     * @var EditTagsAction
+     */
+    protected $action;
+    /**
+     * @var ObjectProphecy
+     */
+    private $shortUrlService;
+
+    public function setUp()
+    {
+        $this->shortUrlService = $this->prophesize(ShortUrlService::class);
+        $this->action = new EditTagsAction($this->shortUrlService->reveal(), Translator::factory([]));
+    }
+
+    /**
+     * @test
+     */
+    public function notProvidingTagsReturnsError()
+    {
+        $response = $this->action->__invoke(
+            ServerRequestFactory::fromGlobals()->withAttribute('shortCode', 'abc123'),
+            new Response()
+        );
+        $this->assertEquals(400, $response->getStatusCode());
+    }
+
+    /**
+     * @test
+     */
+    public function anInvalidShortCodeReturnsNotFound()
+    {
+        $shortCode = 'abc123';
+        $this->shortUrlService->setTagsByShortCode($shortCode, [])->willThrow(InvalidShortCodeException::class)
+                                                                  ->shouldBeCalledTimes(1);
+
+        $response = $this->action->__invoke(
+            ServerRequestFactory::fromGlobals()->withAttribute('shortCode', 'abc123')
+                                               ->withParsedBody(['tags' => []]),
+            new Response()
+        );
+        $this->assertEquals(404, $response->getStatusCode());
+    }
+
+    /**
+     * @test
+     */
+    public function tagsListIsReturnedIfCorrectShortCodeIsProvided()
+    {
+        $shortCode = 'abc123';
+        $this->shortUrlService->setTagsByShortCode($shortCode, [])->willReturn(new ShortUrl())
+                                                                  ->shouldBeCalledTimes(1);
+
+        $response = $this->action->__invoke(
+            ServerRequestFactory::fromGlobals()->withAttribute('shortCode', 'abc123')
+                ->withParsedBody(['tags' => []]),
+            new Response()
+        );
+        $this->assertEquals(200, $response->getStatusCode());
+    }
+}