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Division by zero in Step when maxLength < 0 #3922

mlespiau opened this issue Jan 16, 2017 · 5 comments

Division by zero in Step when maxLength < 0 #3922

mlespiau opened this issue Jan 16, 2017 · 5 comments


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@mlespiau mlespiau commented Jan 16, 2017

What are you trying to achieve?

I'm trying to use acceptPopup or cancelPopup from Codeception WebDriver to cancel or accept a popup in an Acceptance test.

What do you get instead?

The test case fails with no errors no related debug information.


  • Codeception version:
  • PHP Version: PHP 5.6.27
  • Operating System: Alpine Linux Docker Image
  • Installation type: Composer
  • List of installed packages (composer show)
behat/gherkin                        v4.4.5  Gherkin DSL parser for PHP 5.3
codeception/codeception              2.2.7   BDD-style testing framework
doctrine/annotations                 v1.3.1  Docblock Annotations Parser
doctrine/cache                       v1.6.1  Caching library offering an object-oriented API for many cache backends
doctrine/collections                 v1.3.0  Collections Abstraction library
doctrine/common                      v2.7.2  Common Library for Doctrine projects
doctrine/dbal                        v2.5.7  Database Abstraction Layer
doctrine/doctrine-bundle             1.6.6   Symfony DoctrineBundle
doctrine/doctrine-cache-bundle       1.3.0   Symfony Bundle for Doctrine Cache
doctrine/inflector                   v1.1.0  Common String Manipulations with regard to casing and singular/plural rules.
doctrine/instantiator                1.0.5   A small, lightweight utility to instantiate objects in PHP without invoking their constructors
doctrine/lexer                       v1.0.1  Base library for a lexer that can be used in Top-Down, Recursive Descent Parsers.
doctrine/orm                         v2.5.6  Object-Relational-Mapper for PHP
facebook/webdriver                   1.3.0   A PHP client for WebDriver
guzzlehttp/guzzle                    6.2.2   Guzzle is a PHP HTTP client library
guzzlehttp/promises                  v1.3.1  Guzzle promises library
guzzlehttp/psr7                      1.3.1   PSR-7 message implementation
incenteev/composer-parameter-handler v2.1.2  Composer script handling your ignored parameter file
jdorn/sql-formatter                  v1.2.17 a PHP SQL highlighting library
monolog/monolog                      1.22.0  Sends your logs to files, sockets, inboxes, databases and various web services
myclabs/deep-copy                    1.5.5   Create deep copies (clones) of your objects
paragonie/random_compat              v2.0.4  PHP 5.x polyfill for random_bytes() and random_int() from PHP 7
phpdocumentor/reflection-common      1.0     Common reflection classes used by phpdocumentor to reflect the code structure
phpdocumentor/reflection-docblock    3.1.1   With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.
phpdocumentor/type-resolver          0.2.1
phpspec/prophecy                     v1.6.2  Highly opinionated mocking framework for PHP 5.3+
phpunit/php-code-coverage            4.0.4   Library that provides collection, processing, and rendering functionality for PHP code coverage information.
phpunit/php-file-iterator            1.4.2   FilterIterator implementation that filters files based on a list of suffixes.
phpunit/php-text-template            1.2.1   Simple template engine.
phpunit/php-timer                    1.0.8   Utility class for timing
phpunit/php-token-stream             1.4.9   Wrapper around PHP's tokenizer extension.
phpunit/phpunit                      5.4.8   The PHP Unit Testing framework.
phpunit/phpunit-mock-objects         3.4.3   Mock Object library for PHPUnit
psr/cache                            1.0.1   Common interface for caching libraries
psr/http-message                     1.0.1   Common interface for HTTP messages
psr/log                              1.0.2   Common interface for logging libraries
sebastian/code-unit-reverse-lookup   1.0.0   Looks up which function or method a line of code belongs to
sebastian/comparator                 1.2.2   Provides the functionality to compare PHP values for equality
sebastian/diff                       1.4.1   Diff implementation
sebastian/environment                2.0.0   Provides functionality to handle HHVM/PHP environments
sebastian/exporter                   1.2.2   Provides the functionality to export PHP variables for visualization
sebastian/global-state               1.1.1   Snapshotting of global state
sebastian/object-enumerator          1.0.0   Traverses array structures and object graphs to enumerate all referenced objects
sebastian/recursion-context          1.0.2   Provides functionality to recursively process PHP variables
sebastian/resource-operations        1.0.0   Provides a list of PHP built-in functions that operate on resources
sebastian/version                    2.0.1   Library that helps with managing the version number of Git-hosted PHP projects
sensio/distribution-bundle           v5.0.18 Base bundle for Symfony Distributions
sensio/framework-extra-bundle        v3.0.19 This bundle provides a way to configure your controllers with annotations
sensio/generator-bundle              v3.1.2  This bundle generates code for you
sensiolabs/security-checker          v4.0.0  A security checker for your composer.lock
swiftmailer/swiftmailer              v5.4.5  Swiftmailer, free feature-rich PHP mailer
symfony/monolog-bundle               v3.0.3  Symfony MonologBundle
symfony/phpunit-bridge               v3.2.2  Symfony PHPUnit Bridge
symfony/polyfill-apcu                v1.3.0  Symfony polyfill backporting apcu_* functions to lower PHP versions
symfony/polyfill-intl-icu            v1.3.0  Symfony polyfill for intl's ICU-related data and classes
symfony/polyfill-mbstring            v1.3.0  Symfony polyfill for the Mbstring extension
symfony/polyfill-php56               v1.3.0  Symfony polyfill backporting some PHP 5.6+ features to lower PHP versions
symfony/polyfill-php70               v1.3.0  Symfony polyfill backporting some PHP 7.0+ features to lower PHP versions
symfony/polyfill-util                v1.3.0  Symfony utilities for portability of PHP codes
symfony/swiftmailer-bundle           v2.4.2  Symfony SwiftmailerBundle
symfony/symfony                      v3.2.2  The Symfony PHP framework
twig/twig                            v1.31.0 Twig, the flexible, fast, and secure template language for PHP
webmozart/assert                     1.2.0   Assertions to validate method input/output with nice error messages.
  • Suite configuration:
class_name: AcceptanceTester
        - WebDriver:
            url: 'http://opencats/' # put your local url
            host: selenium
            browser: firefox
        - AppBundle\Helper\Acceptance
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@mlespiau mlespiau commented Jan 16, 2017

I've narrowed down the cause by capturing Exception and it's a Division by 0 error in Step.php class in the following line $allowedLength = floor(($maxLength - $argumentCount + 1) / $argumentCount);:

    public function getArgumentsAsString($maxLength = 200)
        $arguments = $this->arguments;
        $argumentCount = count($arguments);
        $totalLength = $argumentCount - 1; // count separators before adding length of individual arguments
        if ($totalLength > $maxLength) {
            $allowedLength = floor(($maxLength - $argumentCount + 1) / $argumentCount);

If I follow the executions this is because the acceptPopup and closePopup do not receive any parameters. I wonder if there are any other test methods facing the same issue.

EDIT: The problem seems to be that the number of arguments (maxLimit) is coming in negative numbers, which is not the intended behaviour.

EDIT: In my case the negative numbers are coming from here: Codeception\Subscriber\Console.php:

 #0 /var/www/code/vendor/codeception/codeception/src/Codeception/Step.php(237): Codeception\Step->getArgumentsAsString(-18)
  #1 /var/www/code/vendor/codeception/codeception/src/Codeception/Step.php(218): Codeception\Step->getHumanizedArguments(-18)
  #2 /var/www/code/vendor/codeception/codeception/src/Codeception/Subscriber/Console.php(322): Codeception\Step->toString(-7)
  #3 /var/www/code/vendor/codeception/codeception/src/Codeception/Subscriber/Console.php(304): Codeception\Subscriber\Console->printStep(Object(Codeception\Step\Condition))
  #4 [internal function]: Codeception\Subscriber\Console->beforeStep(Object(Codeception\Event\StepEvent), 'step.before', Object(Symfony\Component\EventDispatcher\EventDispatcher))
  #5 /var/www/code/vendor/symfony/symfony/src/Symfony/Component/EventDispatcher/EventDispatcher.php(174): call_user_func(Array, Object(Codeception\Event\StepEvent), 'step.before', Object(Symfony\Component\EventDispatcher\EventDispatcher))
  #6 /var/www/code/vendor/symfony/symfony/src/Symfony/Component/EventDispatcher/EventDispatcher.php(43): Symfony\Component\EventDispatcher\EventDispatcher->doDispatch(Array, 'step.before', Object(Codeception\Event\StepEvent))
  #7 /var/www/code/vendor/codeception/codeception/src/Codeception/Scenario.php(78): Symfony\Component\EventDispatcher\EventDispatcher->dispatch('step.before', Object(Codeception\Event\StepEvent))
  #8 /var/www/code/src/AppBundle/tests/_support/_generated/AcceptanceTesterActions.php(268): Codeception\Scenario->runStep(Object(Codeception\Step\Condition))
  #9 /var/www/code/src/AppBundle/tests/_support/AcceptanceTester.php(61): AppBundle\AcceptanceTester->amOnPage('/index.php?m=lo...')
  #10 /var/www/code/src/AppBundle/tests/_support/AcceptanceTester.php(53): AppBundle\AcceptanceTester->iLoginAs('admin', 'admin')
  #11 [internal function]: AppBundle\AcceptanceTester->iAmAuthenticatedAs('Administrator')
  #12 /var/www/code/vendor/codeception/codeception/src/Codeception/Test/Gherkin.php(130): call_user_func_array(Array, Array)
  #13 /var/www/code/vendor/codeception/codeception/src/Codeception/Test/Gherkin.php(88): Codeception\Test\Gherkin->runStep(Object(Behat\Gherkin\Node\StepNode))
  #14 /var/www/code/vendor/codeception/codeception/src/Codeception/Test/Test.php(90): Codeception\Test\Gherkin->test()
  #15 /var/www/code/vendor/phpunit/phpunit/src/Framework/TestSuite.php(753): Codeception\Test\Test->run(Object(PHPUnit_Framework_TestResult))
  #16 /var/www/code/vendor/codeception/codeception/src/Codeception/PHPUnit/Runner.php(98): PHPUnit_Framework_TestSuite->run(Object(PHPUnit_Framework_TestResult))
  #17 /var/www/code/vendor/codeception/codeception/src/Codeception/SuiteManager.php(162): Codeception\PHPUnit\Runner->doEnhancedRun(Object(Codeception\Suite), Object(PHPUnit_Framework_TestResult), Array)
  #18 /var/www/code/vendor/codeception/codeception/src/Codeception/Codecept.php(183): Codeception\SuiteManager->run(Object(Codeception\PHPUnit\Runner), Object(PHPUnit_Framework_TestResult), Array)
  #19 /var/www/code/vendor/codeception/codeception/src/Codeception/Codecept.php(152): Codeception\Codecept->runSuite(Array, 'acceptance', 'job-orders.feat...')
  #20 /var/www/code/vendor/codeception/codeception/src/Codeception/Command/Run.php(282): Codeception\Codecept->run('acceptance', 'job-orders.feat...')
  #21 /var/www/code/vendor/symfony/symfony/src/Symfony/Component/Console/Command/Command.php(262): Codeception\Command\Run->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
  #22 /var/www/code/vendor/symfony/symfony/src/Symfony/Component/Console/Application.php(826): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
  #23 /var/www/code/vendor/symfony/symfony/src/Symfony/Component/Console/Application.php(189): Symfony\Component\Console\Application->doRunCommand(Object(Codeception\Command\Run), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
  #24 /var/www/code/vendor/symfony/symfony/src/Symfony/Component/Console/Application.php(120): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
  #25 /var/www/code/vendor/codeception/codeception/src/Codeception/Application.php(103): Symfony\Component\Console\Application->run(Object(Symfony\Component\Console\Input\ArgvInput), NULL)
  #26 /var/www/code/vendor/codeception/codeception/codecept(34): Codeception\Application->run()
  #27 {main}

I'm proposing a small change that will make this problem go away, but I do not know what the right approach is. It seems the logic for limiting the amount of characters displayed on the console is all over the place!!!

My simple "fix":

$allowedLength = floor(($maxLength - $argumentCount + 1) / max($argumentCount, 1));
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@edno edno commented Jan 16, 2017

Possible fix is to quit the function if $argumentCount equals 0 after line 94 in Step.php.

if ($argumentCount == 0) {
    return '';
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@DavertMik DavertMik commented Jan 19, 2017

Thanks for investigation. Hopefully it is unrelated to acceptPopup and closePopup, so I will remove that from issue description. Also I have applied a quick fix and test for this case

@DavertMik DavertMik changed the title WebDriver acceptPopup and cancelPopup are not working in Division by zero in Step when maxLength < 0 Jan 19, 2017
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@mlespiau mlespiau commented Jan 19, 2017

Thanks @DavertMik, do you know when a version with this patch will be available in composer/packagist?

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@DavertMik DavertMik commented Jan 19, 2017

DavertMik added a commit that referenced this issue Jan 19, 2017
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