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ConsoleOutput example

        $this->captureStreamsIndependently = \array_key_exists('capture_stderr_separately', $options) && $options['capture_stderr_separately'];
        if (!$this->captureStreamsIndependently) {
            $this->output = new StreamOutput(fopen('php://memory', 'w', false));
            if (isset($options['decorated'])) {
                $this->output->setDecorated($options['decorated']);
            }
            if (isset($options['verbosity'])) {
                $this->output->setVerbosity($options['verbosity']);
            }
        } else {
            $this->output = new ConsoleOutput(
                $options['verbosity'] ?? ConsoleOutput::VERBOSITY_NORMAL,
                $options['decorated'] ?? null
            );

            $errorOutput = new StreamOutput(fopen('php://memory', 'w', false));
            $errorOutput->setFormatter($this->output->getFormatter());
            $errorOutput->setVerbosity($this->output->getVerbosity());
            $errorOutput->setDecorated($this->output->isDecorated());

            $reflectedOutput = new \ReflectionObject($this->output);
            $strErrProperty = $reflectedOutput->getProperty('stderr');

    public function run(InputInterface $input = null, OutputInterface $output = null): int
    {
        if (\function_exists('putenv')) {
            @putenv('LINES='.$this->terminal->getHeight());
            @putenv('COLUMNS='.$this->terminal->getWidth());
        }

        $input ??= new ArgvInput();
        $output ??= new ConsoleOutput();

        $renderException = function D\Throwable $e) use ($output) {
            if ($output instanceof ConsoleOutputInterface) {
                $this->renderThrowable($e, $output->getErrorOutput());
            } else {
                $this->renderThrowable($e, $output);
            }
        };
        if ($phpHandler = set_exception_handler($renderException)) {
            restore_exception_handler();
            if (!\is_array($phpHandler) || !$phpHandler[0] instanceof ErrorHandler) {

$this->assertNull($h);
    }

    public function testConsoleEvent()
    {
        $dispatcher = new EventDispatcher();
        $listener = new DebugHandlersListener(null);
        $app = $this->createMock(Application::class);
        $app->expects($this->once())->method('getHelperSet')->willReturn(new HelperSet());
        $command = new Command(__FUNCTION__);
        $command->setApplication($app);
        $event = new ConsoleEvent($command, new ArgvInput(), new ConsoleOutput());

        $dispatcher->addSubscriber($listener);

        $xListeners = [
            KernelEvents::REQUEST => [[$listener, 'configure']],
            ConsoleEvents::COMMAND => [[$listener, 'configure']],
        ];
        $this->assertSame($xListeners, $dispatcher->getListeners());

        $exception = null;
        $eHandler = new ErrorHandler();

return $this->getRunner($console);
        }

        if ($application instanceof Application) {
            if (!\in_array(\PHP_SAPI, ['cli', 'phpdbg', 'embed'], true)) {
                echo 'Warning: The console should be invoked via the CLI version of PHP, not the '.\PHP_SAPI.' SAPI'.\PHP_EOL;
            }

            set_time_limit(0);
            $defaultEnv = !isset($this->options['env']) ? ($_SERVER[$this->options['env_var_name']] ?? 'dev') : null;
            $output = $this->output ??= new ConsoleOutput();

            return new ConsoleApplicationRunner($application, $defaultEnv, $this->getInput(), $output);
        }

        if (isset($this->command)) {
            $this->getInput()->bind($this->command->getDefinition());
        }

        return parent::getRunner($application);
    }

namespace Symfony\Component\Console\Tests\Output;

use PHPUnit\Framework\TestCase;
use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Output\ConsoleOutput;
use Symfony\Component\Console\Output\Output;

class ConsoleOutputTest extends TestCase
{
    public function testConstructorWithoutFormatter()
    {
        $output = new ConsoleOutput(Output::VERBOSITY_QUIET, true);
        $this->assertEquals(Output::VERBOSITY_QUIET, $output->getVerbosity(), '__construct() takes the verbosity as its first argument');
        $this->assertNotSame($output->getFormatter(), $output->getErrorOutput()->getFormatter(), 'ErrorOutput should use it own formatter');
    }

    public function testConstructorWithFormatter()
    {
        $output = new ConsoleOutput(Output::VERBOSITY_QUIET, true, $formatter = new OutputFormatter());
        $this->assertEquals(Output::VERBOSITY_QUIET, $output->getVerbosity(), '__construct() takes the verbosity as its first argument');
        $this->assertSame($formatter, $output->getFormatter());
        $this->assertSame($formatter, $output->getErrorOutput()->getFormatter(), 'Output and ErrorOutput should use the same provided formatter');
    }

        $this->captureStreamsIndependently = $options['capture_stderr_separately'] ?? false;
        if (!$this->captureStreamsIndependently) {
            $this->output = new StreamOutput(fopen('php://memory', 'w', false));
            if (isset($options['decorated'])) {
                $this->output->setDecorated($options['decorated']);
            }
            if (isset($options['verbosity'])) {
                $this->output->setVerbosity($options['verbosity']);
            }
        } else {
            $this->output = new ConsoleOutput(
                $options['verbosity'] ?? ConsoleOutput::VERBOSITY_NORMAL,
                $options['decorated'] ?? null
            );

            $errorOutput = new StreamOutput(fopen('php://memory', 'w', false));
            $errorOutput->setFormatter($this->output->getFormatter());
            $errorOutput->setVerbosity($this->output->getVerbosity());
            $errorOutput->setDecorated($this->output->isDecorated());

            $reflectedOutput = new \ReflectionObject($this->output);
            $strErrProperty = $reflectedOutput->getProperty('stderr');