hasErrored example

LogLevel::ALERT, OutputInterface::VERBOSITY_QUIET, false],
            [LogLevel::EMERGENCY, OutputInterface::VERBOSITY_QUIET, false],
            [LogLevel::ALERT, OutputInterface::VERBOSITY_QUIET, false, $quietMap],
            [LogLevel::EMERGENCY, OutputInterface::VERBOSITY_QUIET, true, $quietMap],
        ];
    }

    public function testHasErrored()
    {
        $logger = new ConsoleLogger(new BufferedOutput());

        $this->assertFalse($logger->hasErrored());

        $logger->warning('foo');
        $this->assertFalse($logger->hasErrored());

        $logger->error('bar');
        $this->assertTrue($logger->hasErrored());
    }

    public function testImplements()
    {
        $this->assertInstanceOf(LoggerInterface::class, $this->getLogger());
    }