styles: Enable the trailing comma PHP-CS-Fixer rule

.php-cs-fixer.php

@@ -40,8 +40,8 @@
     'This code is licensed under the BSD 3-Clause License.%s',
     \substr(
         \file_get_contents('LICENSE'),
-        \strlen('BSD 3-Clause License')
-    )
+        \strlen('BSD 3-Clause License'),
+    ),
 ));
 
 $finder = Finder::create()
@@ -160,6 +160,10 @@
         'static_lambda' => true,
         'strict_comparison' => true,
         'strict_param' => true,
+        'trailing_comma_in_multiline' => [
+            'after_heredoc' => true,
+            'elements' => ['arguments', 'arrays', 'match', 'parameters'],
+        ],
         'yoda_style' => [
             'equal' => false,
             'identical' => false,

bin/infection

@@ -67,7 +67,7 @@ You need to set up the project dependencies using Composer:
     $ composer install
 You can learn all about Composer on https://getcomposer.org/.
 
-ERROR
+ERROR,
     );
 
     throw new RuntimeException('Unable to find the Composer autoloader.');

src/Command/BaseCommand.php

@@ -57,7 +57,7 @@ final public function getApplication(): Application
             $application,
             Application::class,
             'Cannot access to the command application if the command has not been '
-            . 'registered to the application yet'
+            . 'registered to the application yet',
         );
 
         return $application;
@@ -81,7 +81,7 @@ final protected function getIO(): IO
     {
         Assert::notNull(
             $this->io,
-            'Cannot retrieve the IO object before the command was initialized'
+            'Cannot retrieve the IO object before the command was initialized',
         );
 
         return $this->io;

src/Command/ConfigureCommand.php

@@ -90,9 +90,9 @@ protected function configure(): void
                 InputOption::VALUE_REQUIRED,
                 sprintf(
                     'Name of the Test framework to use ("%s")',
-                    implode('", "', TestFrameworkTypes::getTypes())
+                    implode('", "', TestFrameworkTypes::getTypes()),
                 ),
-                TestFrameworkTypes::PHPUNIT
+                TestFrameworkTypes::PHPUNIT,
             );
     }
 
@@ -110,7 +110,7 @@ protected function executeCommand(IO $io): bool
         $consoleHelper = new ConsoleHelper($formatterHelper);
         $consoleHelper->writeSection(
             $io->getOutput(),
-            'Welcome to the Infection config generator'
+            'Welcome to the Infection config generator',
         );
 
         $io->newLine();
@@ -145,7 +145,7 @@ protected function executeCommand(IO $io): bool
         $excludeDirsProvider = new ExcludeDirsProvider(
             $consoleHelper,
             $questionHelper,
-            $fileSystem
+            $fileSystem,
         );
 
         $excludedDirs = $excludeDirsProvider->get($io, $dirsInCurrentDir, $sourceDirs);
@@ -154,7 +154,7 @@ protected function executeCommand(IO $io): bool
         $phpUnitConfigPath = $phpUnitConfigPathProvider->get(
             $io,
             $dirsInCurrentDir,
-            $io->getInput()->getOption(self::OPTION_TEST_FRAMEWORK)
+            $io->getInput()->getOption(self::OPTION_TEST_FRAMEWORK),
         );
 
         $phpUnitExecutableFinder = new TestFrameworkFinder();
@@ -169,7 +169,7 @@ protected function executeCommand(IO $io): bool
         $io->newLine();
         $io->writeln(sprintf(
             'Configuration file "<comment>%s</comment>" was created.',
-            SchemaConfigurationLoader::DEFAULT_JSON5_CONFIG_FILE
+            SchemaConfigurationLoader::DEFAULT_JSON5_CONFIG_FILE,
         ));
         $io->newLine();
 
@@ -185,7 +185,7 @@ private function saveConfig(
         array $excludedDirs,
         ?string $phpUnitConfigPath = null,
         ?string $phpUnitCustomExecutablePath = null,
-        ?string $textLogFilePath = null
+        ?string $textLogFilePath = null,
     ): void {
         $configObject = new stdClass();
 
@@ -230,7 +230,7 @@ private function saveConfig(
 
         file_put_contents(
             SchemaConfigurationLoader::DEFAULT_JSON5_CONFIG_FILE,
-            json_encode($configObject, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES)
+            json_encode($configObject, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES),
         );
     }
 

src/Command/DescribeCommand.php

@@ -67,14 +67,14 @@
             $question = new Question('What mutator do you wish to describe?');
             $question->setAutocompleterValues(array_keys(ProfileList::ALL_MUTATORS));
             $mutator = $io->askQuestion(
-                $question
+                $question,
             );
         }
 
         if (!array_key_exists($mutator, ProfileList::ALL_MUTATORS)) {
             $io->error(sprintf(
                 '"The %s mutator does not exist"',
-                $mutator
+                $mutator,
             ));
 
             return false;
@@ -90,7 +90,7 @@
         if ($definition === null) {
             $io->error(sprintf(
                 'Mutator "%s" does not have a definition',
-                $mutator
+                $mutator,
             ));
 
             return false;
@@ -103,12 +103,12 @@
         $diff = $definition->getDiff();
 
         $diffColorizer = $this->getApplication()->getContainer()->getDiffColorizer();
         $io->writeln(
             [
                 '',
                 'For example:',
                 $diffColorizer->colorize($diff),
-            ]
+            ],
         );
 
         $remedy = $definition->getRemedies();