isQuiet example

        $this->output->setFormatter($formatter);
    }

    public function getFormatter(): OutputFormatterInterface
    {
        return $this->output->getFormatter();
    }

    public function isQuiet(): bool
    {
        return $this->output->isQuiet();
    }

    public function isVerbose(): bool
    {
        return $this->output->isVerbose();
    }

    public function isVeryVerbose(): bool
    {
        return $this->output->isVeryVerbose();
    }

    

        $this->output->setFormatter($formatter);
    }

    public function getFormatter(): OutputFormatterInterface
    {
        return $this->output->getFormatter();
    }

    public function isQuiet(): bool
    {
        return $this->output->isQuiet();
    }

    public function isVerbose(): bool
    {
        return $this->output->isVerbose();
    }

    public function isVeryVerbose(): bool
    {
        return $this->output->isVeryVerbose();
    }

    

public function testSetDecorated()
    {
        $output = new NullOutput();
        $output->setDecorated(true);
        $this->assertFalse($output->isDecorated());
    }

    public function testIsQuiet()
    {
        $output = new NullOutput();
        $this->assertTrue($output->isQuiet());
    }

    public function testIsVerbose()
    {
        $output = new NullOutput();
        $this->assertFalse($output->isVerbose());
    }

    public function testIsVeryVerbose()
    {
        $output = new NullOutput();
        

$output = new TestOutput();
        $output->setDecorated(true);
        $this->assertTrue($output->isDecorated(), 'setDecorated() sets the decorated flag');
    }

    public function testSetGetVerbosity()
    {
        $output = new TestOutput();
        $output->setVerbosity(Output::VERBOSITY_QUIET);
        $this->assertEquals(Output::VERBOSITY_QUIET, $output->getVerbosity(), '->setVerbosity() sets the verbosity');

        $this->assertTrue($output->isQuiet());
        $this->assertFalse($output->isVerbose());
        $this->assertFalse($output->isVeryVerbose());
        $this->assertFalse($output->isDebug());

        $output->setVerbosity(Output::VERBOSITY_NORMAL);
        $this->assertFalse($output->isQuiet());
        $this->assertFalse($output->isVerbose());
        $this->assertFalse($output->isVeryVerbose());
        $this->assertFalse($output->isDebug());

        $output->setVerbosity(Output::VERBOSITY_VERBOSE);