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    <h3>Editing: TesterTrait.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier &lt;fabien@symfony.com&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Tester;

use PHPUnit\Framework\Assert;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\ConsoleOutput;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Output\StreamOutput;
use Symfony\Component\Console\Tester\Constraint\CommandIsSuccessful;

/**
 * @author Amrouche Hamza &lt;hamza.simperfit@gmail.com&gt;
 */
trait TesterTrait
{
    private StreamOutput $output;
    private array $inputs = [];
    private bool $captureStreamsIndependently = false;
    private InputInterface $input;
    private int $statusCode;

    /**
     * Gets the display returned by the last execution of the command or application.
     *
     * @throws \RuntimeException If it's called before the execute method
     */
    public function getDisplay(bool $normalize = false): string
    {
        if (!isset($this-&gt;output)) {
            throw new \RuntimeException('Output not initialized, did you execute the command before requesting the display?');
        }

        rewind($this-&gt;output-&gt;getStream());

        $display = stream_get_contents($this-&gt;output-&gt;getStream());

        if ($normalize) {
            $display = str_replace(\PHP_EOL, &quot;\n&quot;, $display);
        }

        return $display;
    }

    /**
     * Gets the output written to STDERR by the application.
     *
     * @param bool $normalize Whether to normalize end of lines to \n or not
     */
    public function getErrorOutput(bool $normalize = false): string
    {
        if (!$this-&gt;captureStreamsIndependently) {
            throw new \LogicException('The error output is not available when the tester is run without &quot;capture_stderr_separately&quot; option set.');
        }

        rewind($this-&gt;output-&gt;getErrorOutput()-&gt;getStream());

        $display = stream_get_contents($this-&gt;output-&gt;getErrorOutput()-&gt;getStream());

        if ($normalize) {
            $display = str_replace(\PHP_EOL, &quot;\n&quot;, $display);
        }

        return $display;
    }

    /**
     * Gets the input instance used by the last execution of the command or application.
     */
    public function getInput(): InputInterface
    {
        return $this-&gt;input;
    }

    /**
     * Gets the output instance used by the last execution of the command or application.
     */
    public function getOutput(): OutputInterface
    {
        return $this-&gt;output;
    }

    /**
     * Gets the status code returned by the last execution of the command or application.
     *
     * @throws \RuntimeException If it's called before the execute method
     */
    public function getStatusCode(): int
    {
        return $this-&gt;statusCode ?? throw new \RuntimeException('Status code not initialized, did you execute the command before requesting the status code?');
    }

    public function assertCommandIsSuccessful(string $message = ''): void
    {
        Assert::assertThat($this-&gt;statusCode, new CommandIsSuccessful(), $message);
    }

    /**
     * Sets the user inputs.
     *
     * @param array $inputs An array of strings representing each input
     *                      passed to the command input stream
     *
     * @return $this
     */
    public function setInputs(array $inputs): static
    {
        $this-&gt;inputs = $inputs;

        return $this;
    }

    /**
     * Initializes the output property.
     *
     * Available options:
     *
     *  * decorated:                 Sets the output decorated flag
     *  * verbosity:                 Sets the output verbosity flag
     *  * capture_stderr_separately: Make output of stdOut and stdErr separately available
     */
    private function initOutput(array $options)
    {
        $this-&gt;captureStreamsIndependently = \array_key_exists('capture_stderr_separately', $options) &amp;&amp; $options['capture_stderr_separately'];
        if (!$this-&gt;captureStreamsIndependently) {
            $this-&gt;output = new StreamOutput(fopen('php://memory', 'w', false));
            if (isset($options['decorated'])) {
                $this-&gt;output-&gt;setDecorated($options['decorated']);
            }
            if (isset($options['verbosity'])) {
                $this-&gt;output-&gt;setVerbosity($options['verbosity']);
            }
        } else {
            $this-&gt;output = new ConsoleOutput(
                $options['verbosity'] ?? ConsoleOutput::VERBOSITY_NORMAL,
                $options['decorated'] ?? null
            );

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

            $reflectedOutput = new \ReflectionObject($this-&gt;output);
            $strErrProperty = $reflectedOutput-&gt;getProperty('stderr');
            $strErrProperty-&gt;setValue($this-&gt;output, $errorOutput);

            $reflectedParent = $reflectedOutput-&gt;getParentClass();
            $streamProperty = $reflectedParent-&gt;getProperty('stream');
            $streamProperty-&gt;setValue($this-&gt;output, fopen('php://memory', 'w', false));
        }
    }

    /**
     * @return resource
     */
    private static function createStream(array $inputs)
    {
        $stream = fopen('php://memory', 'r+', false);

        foreach ($inputs as $input) {
            fwrite($stream, $input.\PHP_EOL);
        }

        rewind($stream);

        return $stream;
    }
}
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