Created command to rename tag

module/CLI/config/cli.config.php

@@ -19,6 +19,7 @@ return [
             Command\Api\ListKeysCommand::class,
             Command\Tag\ListTagsCommand::class,
             Command\Tag\CreateTagCommand::class,
+            Command\Tag\RenameTagCommand::class,
         ]
     ],
 

module/CLI/config/dependencies.config.php

@@ -23,6 +23,7 @@ return [
             Command\Api\ListKeysCommand::class => AnnotatedFactory::class,
             Command\Tag\ListTagsCommand::class => AnnotatedFactory::class,
             Command\Tag\CreateTagCommand::class => AnnotatedFactory::class,
+            Command\Tag\RenameTagCommand::class => AnnotatedFactory::class,
         ],
     ],
 

module/CLI/src/Command/Tag/CreateTagCommand.php

@@ -40,7 +40,7 @@ class CreateTagCommand extends Command
     {
         $this
             ->setName('tag:create')
-            ->setDescription($this->translator->translate('Creates one or more tags'))
+            ->setDescription($this->translator->translate('Creates one or more tags.'))
             ->addOption(
                 'name',
                 't',

module/CLI/src/Command/Tag/ListTagsCommand.php

@@ -41,7 +41,7 @@ class ListTagsCommand extends Command
     {
         $this
             ->setName('tag:list')
-            ->setDescription($this->translator->translate('Lists existing tags'));
+            ->setDescription($this->translator->translate('Lists existing tags.'));
     }
 
     protected function execute(InputInterface $input, OutputInterface $output)

module/CLI/src/Command/Tag/RenameTagCommand.php

@@ -0,0 +1,65 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\CLI\Command\Tag;
+
+use Acelaya\ZsmAnnotatedServices\Annotation as DI;
+use Shlinkio\Shlink\Core\Exception\EntityDoesNotExistException;
+use Shlinkio\Shlink\Core\Service\Tag\TagService;
+use Shlinkio\Shlink\Core\Service\Tag\TagServiceInterface;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Zend\I18n\Translator\Translator;
+use Zend\I18n\Translator\TranslatorInterface;
+
+class RenameTagCommand extends Command
+{
+    /**
+     * @var TagServiceInterface
+     */
+    private $tagService;
+    /**
+     * @var TranslatorInterface
+     */
+    private $translator;
+
+    /**
+     * RenameTagCommand constructor.
+     * @param TagServiceInterface $tagService
+     * @param TranslatorInterface $translator
+     *
+     * @DI\Inject({TagService::class, Translator::class})
+     */
+    public function __construct(TagServiceInterface $tagService, TranslatorInterface $translator)
+    {
+        $this->tagService = $tagService;
+        $this->translator = $translator;
+        parent::__construct();
+    }
+
+    protected function configure()
+    {
+        $this
+            ->setName('tag:rename')
+            ->setDescription($this->translator->translate('Renames one existing tag.'))
+            ->addArgument('oldName', InputArgument::REQUIRED, $this->translator->translate('Current name of the tag.'))
+            ->addArgument('newName', InputArgument::REQUIRED, $this->translator->translate('New name of the tag.'));
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $oldName = $input->getArgument('oldName');
+        $newName = $input->getArgument('newName');
+
+        try {
+            $this->tagService->renameTag($oldName, $newName);
+            $output->writeln(sprintf('<info>%s</info>', $this->translator->translate('Tag properly renamed.')));
+        } catch (EntityDoesNotExistException $e) {
+            $output->writeln('<error>' . sprintf($this->translator->translate(
+                'A tag with name "%s" was not found'
+            ), $oldName) . '</error>');
+        }
+    }
+}

module/CLI/test/Command/Tag/RenameTagCommandTest.php

@@ -0,0 +1,82 @@
+<?php
+declare(strict_types=1);
+
+namespace ShlinkioTest\Shlink\CLI\Command\Tag;
+
+use PHPUnit\Framework\TestCase;
+use Prophecy\Prophecy\MethodProphecy;
+use Prophecy\Prophecy\ObjectProphecy;
+use Shlinkio\Shlink\CLI\Command\Tag\RenameTagCommand;
+use Shlinkio\Shlink\Core\Entity\Tag;
+use Shlinkio\Shlink\Core\Exception\EntityDoesNotExistException;
+use Shlinkio\Shlink\Core\Service\Tag\TagServiceInterface;
+use Symfony\Component\Console\Application;
+use Symfony\Component\Console\Tester\CommandTester;
+use Zend\I18n\Translator\Translator;
+
+class RenameTagCommandTest extends TestCase
+{
+    /**
+     * @var RenameTagCommand
+     */
+    private $command;
+    /**
+     * @var CommandTester
+     */
+    private $commandTester;
+    /**
+     * @var ObjectProphecy
+     */
+    private $tagService;
+
+    public function setUp()
+    {
+        $this->tagService = $this->prophesize(TagServiceInterface::class);
+
+        $command = new RenameTagCommand($this->tagService->reveal(), Translator::factory([]));
+        $app = new Application();
+        $app->add($command);
+
+        $this->commandTester = new CommandTester($command);
+    }
+
+    /**
+     * @test
+     */
+    public function errorIsPrintedIfExceptionIsThrown()
+    {
+        $oldName = 'foo';
+        $newName = 'bar';
+        /** @var MethodProphecy $renameTag */
+        $renameTag = $this->tagService->renameTag($oldName, $newName)->willThrow(EntityDoesNotExistException::class);
+
+        $this->commandTester->execute([
+            'oldName' => $oldName,
+            'newName' => $newName,
+        ]);
+        $output = $this->commandTester->getDisplay();
+
+        $this->assertContains('A tag with name "foo" was not found', $output);
+        $renameTag->shouldHaveBeenCalled();
+    }
+
+    /**
+     * @test
+     */
+    public function successIsPrintedIfNoErrorOccurs()
+    {
+        $oldName = 'foo';
+        $newName = 'bar';
+        /** @var MethodProphecy $renameTag */
+        $renameTag = $this->tagService->renameTag($oldName, $newName)->willReturn(new Tag());
+
+        $this->commandTester->execute([
+            'oldName' => $oldName,
+            'newName' => $newName,
+        ]);
+        $output = $this->commandTester->getDisplay();
+
+        $this->assertContains('Tag properly renamed', $output);
+        $renameTag->shouldHaveBeenCalled();
+    }
+}