diff --git a/module/CLI/src/Command/Shortcode/GeneratePreviewCommand.php b/module/CLI/src/Command/Shortcode/GeneratePreviewCommand.php
index 358eb034..b224ad61 100644
--- a/module/CLI/src/Command/Shortcode/GeneratePreviewCommand.php
+++ b/module/CLI/src/Command/Shortcode/GeneratePreviewCommand.php
@@ -40,9 +40,9 @@ class GeneratePreviewCommand extends Command
         PreviewGeneratorInterface $previewGenerator,
         TranslatorInterface $translator
     ) {
+        $this->shortUrlService = $shortUrlService;
         $this->previewGenerator = $previewGenerator;
         $this->translator = $translator;
-        $this->shortUrlService = $shortUrlService;
         parent::__construct(null);
     }
 
diff --git a/module/CLI/test/Command/Shortcode/GeneratePreviewCommandTest.php b/module/CLI/test/Command/Shortcode/GeneratePreviewCommandTest.php
new file mode 100644
index 00000000..216c004a
--- /dev/null
+++ b/module/CLI/test/Command/Shortcode/GeneratePreviewCommandTest.php
@@ -0,0 +1,99 @@
+<?php
+namespace ShlinkioTest\Shlink\CLI\Command\Shortcode;
+
+use PHPUnit_Framework_TestCase as TestCase;
+use Prophecy\Argument;
+use Prophecy\Prophecy\ObjectProphecy;
+use Shlinkio\Shlink\CLI\Command\Shortcode\GeneratePreviewCommand;
+use Shlinkio\Shlink\Common\Exception\PreviewGenerationException;
+use Shlinkio\Shlink\Common\Service\PreviewGenerator;
+use Shlinkio\Shlink\Core\Entity\ShortUrl;
+use Shlinkio\Shlink\Core\Service\ShortUrlService;
+use Symfony\Component\Console\Application;
+use Symfony\Component\Console\Tester\CommandTester;
+use Zend\I18n\Translator\Translator;
+use Zend\Paginator\Adapter\ArrayAdapter;
+use Zend\Paginator\Paginator;
+
+class GeneratePreviewCommandTest extends TestCase
+{
+    /**
+     * @var CommandTester
+     */
+    protected $commandTester;
+    /**
+     * @var ObjectProphecy
+     */
+    private $previewGenerator;
+    /**
+     * @var ObjectProphecy
+     */
+    private $shortUrlService;
+
+    public function setUp()
+    {
+        $this->previewGenerator = $this->prophesize(PreviewGenerator::class);
+        $this->shortUrlService = $this->prophesize(ShortUrlService::class);
+
+        $command = new GeneratePreviewCommand(
+            $this->shortUrlService->reveal(),
+            $this->previewGenerator->reveal(),
+            Translator::factory([])
+        );
+        $app = new Application();
+        $app->add($command);
+
+        $this->commandTester = new CommandTester($command);
+    }
+
+    /**
+     * @test
+     */
+    public function previewsForEveryUrlAreGenerated()
+    {
+        $paginator = $this->createPaginator([
+            (new ShortUrl())->setOriginalUrl('http://foo.com'),
+            (new ShortUrl())->setOriginalUrl('https://bar.com'),
+            (new ShortUrl())->setOriginalUrl('http://baz.com/something'),
+        ]);
+        $this->shortUrlService->listShortUrls(1)->willReturn($paginator)->shouldBeCalledTimes(1);
+
+        $this->previewGenerator->generatePreview('http://foo.com')->shouldBeCalledTimes(1);
+        $this->previewGenerator->generatePreview('https://bar.com')->shouldBeCalledTimes(1);
+        $this->previewGenerator->generatePreview('http://baz.com/something')->shouldBeCalledTimes(1);
+
+        $this->commandTester->execute([
+            'command' => 'shortcode:process-previews'
+        ]);
+    }
+
+    /**
+     * @test
+     */
+    public function exceptionWillOutputError()
+    {
+        $items = [
+            (new ShortUrl())->setOriginalUrl('http://foo.com'),
+            (new ShortUrl())->setOriginalUrl('https://bar.com'),
+            (new ShortUrl())->setOriginalUrl('http://baz.com/something'),
+        ];
+        $paginator = $this->createPaginator($items);
+        $this->shortUrlService->listShortUrls(1)->willReturn($paginator)->shouldBeCalledTimes(1);
+        $this->previewGenerator->generatePreview(Argument::any())->willThrow(PreviewGenerationException::class)
+                                                                 ->shouldBeCalledTimes(count($items));
+
+        $this->commandTester->execute([
+            'command' => 'shortcode:process-previews'
+        ]);
+        $output = $this->commandTester->getDisplay();
+        $this->assertEquals(count($items), substr_count($output, 'Error'));
+    }
+
+    protected function createPaginator(array $items)
+    {
+        $paginator = new Paginator(new ArrayAdapter($items));
+        $paginator->setItemCountPerPage(count($items));
+
+        return $paginator;
+    }
+}