Remove obsolete Symfony feature detections (#10425)

src/Composer/IO/ConsoleIO.php

@@ -97,7 +97,7 @@ class ConsoleIO extends BaseIO
      */
     public function isVerbose()
     {
-        return $this->output->getVerbosity() >= OutputInterface::VERBOSITY_VERBOSE;
+        return $this->output->isVerbose();
     }
 
     /**
@@ -105,7 +105,7 @@ class ConsoleIO extends BaseIO
      */
     public function isVeryVerbose()
     {
-        return $this->output->getVerbosity() >= OutputInterface::VERBOSITY_VERY_VERBOSE;
+        return $this->output->isVeryVerbose();
     }
 
     /**
@@ -113,7 +113,7 @@ class ConsoleIO extends BaseIO
      */
     public function isDebug()
     {
-        return $this->output->getVerbosity() >= OutputInterface::VERBOSITY_DEBUG;
+        return $this->output->isDebug();
     }
 
     /**

src/Composer/Util/ProcessExecutor.php

@@ -118,13 +118,7 @@ class ProcessExecutor
         $this->captureOutput = func_num_args() > 3;
         $this->errorOutput = '';
 
-        // TODO in v3, commands should be passed in as arrays of cmd + args
-        if (method_exists('Symfony\Component\Process\Process', 'fromShellCommandline')) {
-            $process = Process::fromShellCommandline($command, $cwd, null, null, static::getTimeout());
-        } else {
-            /** @phpstan-ignore-next-line */
-            $process = new Process($command, $cwd, null, null, static::getTimeout());
-        }
+        $process = Process::fromShellCommandline($command, $cwd, null, null, static::getTimeout());
         if (!Platform::isWindows() && $tty) {
             try {
                 $process->setTty(true);
@@ -249,12 +243,7 @@ class ProcessExecutor
         }
 
         try {
-            // TODO in v3, commands should be passed in as arrays of cmd + args
-            if (method_exists('Symfony\Component\Process\Process', 'fromShellCommandline')) {
-                $process = Process::fromShellCommandline($command, $cwd, null, null, static::getTimeout());
-            } else {
-                $process = new Process($command, $cwd, null, null, static::getTimeout());
-            }
+            $process = Process::fromShellCommandline($command, $cwd, null, null, static::getTimeout());
         } catch (\Throwable $e) {
             call_user_func($job['reject'], $e);
 

tests/Composer/Test/Package/Archiver/ArchivableFilesFinderTest.php

@@ -281,12 +281,7 @@ class ArchivableFilesFinderTest extends TestCase
      */
     protected function getArchivedFiles($command)
     {
-        if (method_exists('Symfony\Component\Process\Process', 'fromShellCommandline')) {
-            $process = Process::fromShellCommandline($command, $this->sources);
-        } else {
-            // @phpstan-ignore-next-line symfony/process 2.8 accepts a string but not 5.3 which is used only for PHPStan
-            $process = new Process($command, $this->sources);
-        }
+        $process = Process::fromShellCommandline($command, $this->sources);
         $process->run();
 
         $archive = new \PharData($this->sources.'/archive.zip');

tests/Composer/Test/Question/StrictConfirmationQuestionTest.php

@@ -134,16 +134,10 @@ class StrictConfirmationQuestionTest extends TestCase
      */
     protected function createInput($entry)
     {
-        $stream = $this->getInputStream($entry);
         $input = new ArrayInput(array('--no-interaction'));
-        $dialog = new QuestionHelper();
+        $input->setStream($this->getInputStream($entry));
 
-        if (method_exists($dialog, 'setInputStream')) {
-            $dialog->setInputStream($stream);
-        }
-        if ($input instanceof StreamableInputInterface) {
-            $input->setStream($stream);
-        }
+        $dialog = new QuestionHelper();
 
         return array($input, $dialog);
     }