BehatPantherExtension

Symfony Panther extension for Behat

Install

composer require --dev robertfausk/behat-panther-extension

Usage example

• Add Robertfausk\Behat\PantherExtension: ~ to your behat.yml.
• Use panther session in Behat\MinkExtension.
• The extension will use options of symfony/panther by default. Have a look at PantherTestCaseTrait::$defaultOptions for this.
• Following are some examples with all sessions using mink-panther-driver:

  # in behat.yml
      extensions:
          Robertfausk\Behat\PantherExtension: ~ # no configuration here
          Behat\MinkExtension:
             javascript_session: javascript_chrome
             sessions:
                 default:
                     panther: ~
                 javascript:
                     panther:
                         options: ~
                 javascript_chrome:
                     panther:
                         options:
                             browser: 'chrome'
                             webServerDir: '%paths.base%/public' # your custom public dir
                 javascript_firefox:
                     panther:
                         options:
                             browser: 'firefox'
                 javascript_with_all_options:
                     panther:
                         options:
                             env:
                                 APP_ENV: 'dev'
                             hostname: '127.0.0.1'    
                         kernel_options: ~ # unused by behat-panther-extension cause it does not extend KernelTestCase
                         manager_options:
                             connection_timeout_in_ms: 5000
                             request_timeout_in_ms: 120000
  

Example on how to pass arguments to ChromeDriver binary

See also https://chromedriver.chromium.org/logging

# in behat.yml enable logging
    extensions:
        Robertfausk\Behat\PantherExtension: ~
        Behat\MinkExtension:
           javascript_session: javascript
           sessions:
               javascript:
                   panther:
                       manager_options:
                           chromedriver_arguments:
                               - --log-path=/var/www/html/chromedriver.log
                               - --verbose

Example on how to test for a downloaded file

# in behat.yml ensure that chrome saves files to the destination you want
    extensions:
        Robertfausk\Behat\PantherExtension: ~
        Behat\MinkExtension:
           javascript_session: javascript
           files_path: '%paths.base%/tests/files'
           sessions:
               javascript:
                   panther:
                       manager_options:
                           capabilities:
                                goog:chromeOptions:
                                    prefs:
                                        download.default_directory: '/var/www/html/tests/files/Downloads'

# acme_download.feature
Feature: Acme files can be downloaded

  Background:
    Given there is no file in download directory
    # additionally setup your database entries etc. if needed

  @javascript
  Scenario: As an user with role Admin i can download an existing acme file
    Given I am authenticated as "[email protected]"
    And I am on "/acme-file-list"
    Then I wait for "acme.pdf" to appear
    When I click on test element "button-acme-download"
    Then I can find file "acme.pdf" in download directory

<?php
#AcmeContext.php

use Assert\Assertion;
use Behat\Mink\Element\NodeElement;
use Symfony\Component\Filesystem\Filesystem;
use Symfony\Component\Finder\Finder;


/**
 * @When /^I click on test element "([^"]*)"$/
 *
 * @param string $locator
 */
public function iClickOnTestElement(string $locator): void
{
    $btn = $this->getTestElement($locator);
    $btn->click();
}

/**
 * @Given /^there is no file in download directory$/
 */
public function thereIsNoFileinDownloadDirectory(): void
{
    $finder = new Finder();
    $fs = new Filesystem();
    $fs->remove($finder->in($this->getDownloadDirectory())->files());
}

/**
 * @Then /^I can find file "([^"]*)" in download directory$/
 */
public function iCanFindFileInDownloadDirectory($filename)
{
    $fs = new Filesystem();
    $path = \sprintf('%s%s%s', $this->getDownloadDirectory(), DIRECTORY_SEPARATOR, $filename);
    $this->spin(
        static function () use ($fs, $path): void {
            $isFileExisting = $fs->exists($path);
            Assertion::true($isFileExisting);
        },
    );
    Assertion::true($fs->exists($path));
}

private function getDownloadDirectory(): string
{
    return \sprintf('%s%sDownloads', $this->getMinkParameter('files_path'), DIRECTORY_SEPARATOR);
}

private function getTestElement(string $dataTestLocator, int $tries = 25): NodeElement
{
    return $this->getNodeElement("[data-test='$dataTestLocator']", $tries);
}

private function spin(\Closure $closure, ?int $tries = 25): ?NodeElement
{
    for ($i = 0; $i <= $tries; $i++) {
        try {
            return $closure();
        } catch (\Throwable $e) {
            if ($i === $tries) {
                throw $e;
            }
        }

        \usleep(100000); // 100 milliseconds
    }
}

How to upgrade?

Have a look at CHANGELOG for detailed information.

How to contribute?

Start docker-compose with php version of your choice. At the moment the following php versions can be used with docker-compose: php7.2, php7.3, php7.4, php8.0, php8.1 and php8.2.

docker-compose up php8.2

Run phpunit tests

docker-compose run php8.2 vendor/bin/phpunit

Credits

Created by Robert Freigang robertfausk.

BehatPantherExtension is built on top of symfony/panther and robertfausk/mink-panther-driver. It is for usage with Behat and Mink.