kahlan\Log::exception PHP Метод

    public function exception($exception = null)
    {
        if (!func_num_args()) {
            return $this->_exception;
        }
        $this->_exception = $exception;
        return $this;
    }

use Exception;
use Kahlan\Log;
use Kahlan\Scope;
describe("Log", function () {
    describe("->__construct()", function () {
        it("correctly sets default values", function () {
            $log = new Log();
            expect($log->scope())->toBe(null);
            expect($log->type())->toBe('passed');
            expect($log->not())->toBe(false);
            expect($log->description())->toBe(null);
            expect($log->matcher())->toBe(null);
            expect($log->matcherName())->toBe(null);
            expect($log->data())->toBe([]);
            expect($log->backtrace())->toBe([]);
            expect($log->exception())->toBe(null);
            expect($log->file())->toBe(null);
            expect($log->line())->toBe(null);
            expect($log->children())->toBe([]);
        });
    });
    describe("->add()", function () {
        beforeEach(function () {
            $this->scope = new Scope();
            $this->pattern = '*Suite.php';
            $this->regExp = strtr(preg_quote($this->pattern, '~'), ['\\*' => '.*', '\\?' => '.']);
            $this->scope->backtraceFocus($this->pattern);
            $this->reports = new Log(["scope" => $this->scope]);
        });
        it("rebases backtrace on fail report", function () {
            $this->reports->add('fail', ['backtrace' => debug_backtrace()]);