Actions

Testing Area/Behat Testing/Setup: Difference between revisions

From Mahara Wiki

< Testing Area‎ | Behat Testing
No edit summary
 
(20 intermediate revisions by 7 users not shown)
Line 4: Line 4:


2. Install Behat's dependencies:
2. Install Behat's dependencies:
<source lang="bash" enclose="div">
<syntaxhighlight lang="bash">
$ sudo apt-get install curl openjdk-7-jre-headless
$ sudo apt-get install curl openjdk-8-jre-headless
</source>
</syntaxhighlight>


3. Add the following config settings to the bottom of your Mahara config.php file inside the htdocs/ subdirectory of the Mahara codebase.  
3. Add the following config settings to the bottom of your Mahara config.php file inside the htdocs/ subdirectory of the Mahara codebase.  
Line 12: Line 12:
{{note|If /var/www/maharadata is not where you created your dataroot, you'll need to replace that with the correct path in the following commands}}
{{note|If /var/www/maharadata is not where you created your dataroot, you'll need to replace that with the correct path in the following commands}}


<source lang="bash" enclose="div">
<syntaxhighlight lang="bash">
// Behat config
// Behat config
$cfg->behat_test = true; // Turn this off when you are not behat testing
$cfg->behat_dbprefix = 'behat_'; // must not empty
$cfg->behat_dbprefix = 'behat_'; // must not empty
$cfg->behat_dataroot = "/var/lib/maharadata/master_behat"; // Behat's copy of maharadata
$cfg->behat_dataroot = "/var/lib/maharadata/main_behat"; // The Behat copy of maharadata.
$cfg->behat_wwwroot = 'http://localhost:8000'; // Must be this
$cfg->behat_wwwroot = 'http://localhost:8000'; // Must be this
$cfg->behat_selenium2 = "http://127.0.0.1:4444/wd/hub"; // Must be this
$cfg->behat_selenium2 = "http://127.0.0.1:4444/wd/hub"; // Must be this
</source>


{{note|There should be a behat_dataroot for each Mahara instance that you set up. Here the one for the master branch / this Mahara instance is created.}}
// If you want failed step screenshots appear directly on screen while the step fails (only Ubuntu)
$cfg->behat_view_screenshots = true;
</syntaxhighlight>
 
{{note|There should be a behat_dataroot for each Mahara instance that you set up. Here the one for the main branch / this Mahara instance is created.}}
{{note|If the directory for $cfg->behat_dataroot does not exist then it will need to be created.}}
{{note|If the directory for $cfg->behat_dataroot does not exist then it will need to be created.}}


4. Make your Behat data directory (check this matches what you set in config.php):
4. Make your Behat data directory (check this matches what you set in config.php):
<source lang="bash" enclose="div">
<syntaxhighlight lang="bash">
$ sudo mkdir /var/lib/maharadata/master_behat
$ sudo mkdir /var/lib/maharadata/main_behat
</source>
</syntaxhighlight>


5. Make the directory and any subdirectories writeable by Mahara (check this is correct):  
5. Make the directory and any subdirectories writeable by Mahara (check the directory is correct):  
<source lang="bash" enclose="div">
<syntaxhighlight lang="bash">
$ sudo chmod 777 -R /var/lib/maharadata/master_behat
$ sudo chmod 777 -R /var/lib/maharadata/main_behat
</source>
</syntaxhighlight>
<span id="chown"></span>
6. Change the directory and any subdirectories permissions to be owned by apache user (check the directory is correct):
<syntaxhighlight lang="bash">
$ sudo chown -R www-data:www-data /var/lib/maharadata/main_behat
</syntaxhighlight>


6. Change the directory and any subdirectories permissions to be owned by apache user (check this is correct):
*For Ubuntu, apache runs with user www-data
<source lang="bash" enclose="div">
*For Centos, apache runs with user apache
$ sudo chown -R www-data.www-data /var/lib/maharadata/master_behat
</source>
 
* For Ubuntu, apache runs with user www-data
* For Centos, apache runs with user apache


7. Run Behat tests (change into your Mahara code directory first) as the apache user:
7. Run Behat tests (change into your Mahara code directory first) as the apache user:
<source lang="bash" enclose="div">
<syntaxhighlight lang="bash">
$ cd
$ cd
$ cd code/mahara
$ cd code/mahara
./test/behat/mahara_behat.sh run
./test/behat/mahara_behat.sh run
</source>
</syntaxhighlight>


Or if you have sudo access:
Or if you have sudo access:
<source lang="bash" enclose="div">
<syntaxhighlight lang="bash">
$ cd
$ cd
$ cd code/mahara
$ cd code/mahara
sudo -u www-data ./test/behat/mahara_behat.sh run
sudo -u www-data ./test/behat/mahara_behat.sh run
</source>
</syntaxhighlight>




Line 71: Line 75:
[[Category:Behat]]
[[Category:Behat]]


== How to Run Mahara behat test on Chrome ==
==Running Behat tests with html report and screenshots on failed steps==
 
To run tests with html output, add the flag 'html' to your test run command, e.g:
 
<syntaxhighlight lang="bash">./test/behat/mahara_behat.sh run create_page.feature html</syntaxhighlight>
 
This will automatically open an html report of the test run in your browser. If there were failed steps, the the html report plugin takes a screenshot of the page that failed.
You can find the screenshots in your behat dataroot (usually /var/lib/maharadata/main_behat) at the following path:
behat/html_results/<feature title>/<scenario title>.png
 
Ubuntu only (you need the image viewer '[https://packages.ubuntu.com/search?keywords=eog eog]'): If you set
 
$cfg->behat_view_screenshots = true;
 
in your config.php file then the images will be opened up in image browser.
 
Hopefully we will rig up the report to link to the screenshot soon.
 
==How to Run Mahara behat test on Chrome for versions older than 17.04==


{{note|Mahara behat is running on chrome driver by default in 17:04+}}
{{note|Mahara behat is running on chrome driver by default in 17:04+}}
Line 85: Line 107:
3. Change the behat.yml file as follows,
3. Change the behat.yml file as follows,


Here is the file path var/lib/maharadata/master_behat/behat.yml
Here is the file path var/lib/maharadata/main_behat/behat.yml


when you open the beaht.yml file replace the following code with the lines that contain sessions to goutte=NUll( Niranjan or Lovesh can exactly tell you where to replcae the code if it is confusing) and save it
when you open the beaht.yml file replace the following code with the lines that contain sessions to go


javascript_session: selenium2
javascript_session: selenium2
Line 98: Line 120:
for example  ./test/behat/mahara_behat.sh run example.feature
for example  ./test/behat/mahara_behat.sh run example.feature


== Steps for creating a html report and a screenshot for behat tests ==
==Debugging==
 
=== 1- Install BehatHtmlFormatterPlugin ===
 
This is from https://github.com/dutchiexl/BehatHtmlFormatterPlugin.
Open your /mahara/external/composer.json and add the following line in the "require" block:
  "emuse/behat-html-formatter": ">=0.1",
''(you don't need the trailing comma if it's the last requirement.)''
 
Then navigate to your code checkout in a terminal and run
  make initcomposer
 
Check the /mahara/external/vendor folder and you should see a subfolder called emuse. If not, look for and try to resolve any composer errors.
 
=== 2- Edit your behat.yml to use the html formatter ===
 
You'll find the behat.yml file in your behat dataroot. If you're not sure where that is, look in your config.php file (/mahara/htdocs/config.php).
In my case it says
  $cfg->behat_dataroot = "/var/lib/maharadata/master_behat";
So, my behat.yml will be in var/lib/maharadata/master_behat/behat/behat.yml
 
You'll need to add two things to the file. Under formatters add the html output path for the report like this:
  formatters: 
    html:
      output_path: %paths.base%/results/html/
So after a test run your html report will be found here: ''your behat_dataroot''/behat/results/html/''my_report''.html  '''''(NB: I'm thinking about making this simpler so there are less nested folders.)'''''
 
Then, under extensions, add the following settings for the HTML report, making sure the line beginning 'emuse...' is indented to the same level as Behat\MinkExtension.
  extensions:
    emuse\BehatHTMLFormatter\BehatHTMLFormatterExtension:
      name: html
      renderer: Twig,Behat2
      file_name: index
      print_args: true
      print_outp: true
      loop_break: true 
Here the filename is index, meaning that the report file will be called index.html and overwritten after every test run.
If you leave out the file_name line here, the default will prevail, which is that every test run will produce two separate reports, Twig_''date/time'' and Behat2_''datetime''.
'''''(NB: Useful to look into producing a combined report with a unique name for each test run?)'''''
 
It should look like the below code(copied my yml file for reference)
 
default:
  autoload:
    - /home/niranjanbandi/code/mahara/htdocs/testing/frameworks/behat/classes
  formatters:
    html:
      output_path: %paths.base%/results/html/
  extensions:
    Behat\MinkExtension:
      base_url: 'http://localhost:8000'
      files_path: /home/niranjanbandi/code/mahara/test/behat/upload_files
      javascript_session: selenium2
      selenium2:
        browser: chrome
      goutte: ~
    emuse\BehatHTMLFormatter\BehatHTMLFormatterExtension:
      name: html
      renderer: Twig,Behat2
      file_name: index
      print_args: true
      print_outp: true
      loop_break: true
  suites:
    core_features:
      paths:
        - /home/loveshjain/code/mahara/test/behat/features
      contexts:
        - BehatMaharaCoreContext
        - BehatHooks
        - BehatGeneral
        - BehatNavigation
        - BehatView
        - BehatDataGenerators
        - BehatAccount
        - BehatAdmin
        - BehatForms
      filters:
        tags: '@core'
 
3- Change code/mahara/test/behat/mahar_behat.sh
 
you can copy paste the below code with the existing code
 
#!/bin/bash
 
# Get action and Mahara dir
ACTION=$1
SCRIPTPATH=`readlink -f "${BASH_SOURCE[0]}"`
MAHARAROOT=`dirname $( dirname $( dirname "$SCRIPTPATH" ))`
SERVER=0
test -z $SELENIUM_PORT && export SELENIUM_PORT=4400
test -z $PHP_PORT && export PHP_PORT=8000
test -z $XVFB_PORT && export XVFB_PORT=10
 
echo "S: $SELENIUM_PORT"
echo "P: $PHP_PORT"
 
# Wait and check if the selenium server is running in maximum 15 seconds
function is_selenium_running {
    for i in `seq 1 15`; do
        sleep 1
        res=$(curl -o /dev/null --silent --write-out '%{http_code}\n' http://localhost:${SELENIUM_PORT}/wd/hub/status)
        if [ $res == "200" ]; then
            return 0;
        fi
    done
    return 1;
}
 
function cleanup {
    echo "Shutdown Selenium"
    curl -o /dev/null --silent http://localhost:${SELENIUM_PORT}/selenium-server/driver/?cmd=shutDownSeleniumServer
 
    if [[ $SERVER ]]
    then
        echo "Shutdown PHP server"
        kill $SERVER
    fi
 
    if [[ $1 ]]
    then
        exit $1
    else
        exit 255
    fi
 
    echo "Disable behat test environment"
    php htdocs/testing/frameworks/behat/cli/util.php -d
}
 
# Check we are not running as root for some weird reason
if [[ "$USER" = "root" ]]
then
    echo "This script should not be run as root"
    exit 1
fi
 
cd $MAHARAROOT
 
# Trap errors so we can cleanup
trap cleanup ERR
trap cleanup INT
 
if [ "$ACTION" = "action" ]
then
 
    # Wrap the util.php script
 
    PERFORM=$2
    php htdocs/testing/frameworks/behat/cli/util.php --$PERFORM
 
elif [ "$ACTION" = "run" -o "$ACTION" = "runheadless" -o "$ACTION" = "rundebug" -o "$ACTION" = "runfresh" -o $ACTION = 'rundebugheadless' ]
then
 
    if [[ $2 == @* ]]; then
        TAGS=$2
        echo "Only run tests with the tag: $TAGS"
    elif [ $2 ]; then
        if [[ $2 == */* ]]; then
            FEATURE="test/behat/features/$2"
        else
            FEATURE=`find test/behat/features -name $2 | head -n 1`
        fi
        echo "Only run tests in file: $FEATURE"
    else
        echo "Run all tests"
    fi
 
    if [ "$ACTION" = "runfresh" ]
    then
        echo "Drop the old test site if exist"
        php htdocs/testing/frameworks/behat/cli/util.php --drop
    fi
 
    # Initialise the test site for behat (database, dataroot, behat yml config)
    php htdocs/testing/frameworks/behat/cli/init.php
 
    # Run the Behat tests themselves (after any intial setup)
    if is_selenium_running; then
        echo "Selenium is running"
    else
        echo "Start Selenium..."
 
        SELENIUM_VERSION_MAJOR=2.53
        SELENIUM_VERSION_MINOR=1
 
        SELENIUM_FILENAME=selenium-server-standalone-$SELENIUM_VERSION_MAJOR.$SELENIUM_VERSION_MINOR.jar
        SELENIUM_PATH=./test/behat/$SELENIUM_FILENAME
 
        # If no Selenium installed, download it
        if [ ! -f $SELENIUM_PATH ]; then
            echo "Downloading Selenium..."
            wget -q -O $SELENIUM_PATH http://selenium-release.storage.googleapis.com/$SELENIUM_VERSION_MAJOR/$SELENIUM_FILENAME
            echo "Downloaded"
        fi
 
        if [ $ACTION = 'runheadless' -o $ACTION = 'rundebugheadless' ]
        then
            # we want to run selenium headless on a different display - this allows for that ;)
            echo "Starting Xvfb ..."
            Xvfb :${XVFB_PORT} -ac > /tmp/xvfb.log 2>&1 & echo "PID [$!]"
 
            DISPLAY=:${XVFB_PORT} nohup java -jar $SELENIUM_PATH -port ${SELENIUM_PORT} > /tmp/selenium.log 2>&1 & echo $!
        else
            java -jar $SELENIUM_PATH -port ${SELENIUM_PORT} &> /tmp/selenium.log &
        fi
 
        if is_selenium_running; then
            echo "Selenium started"
        echo "Selenium started lovesh"   
        else
            echo "Selenium can't be started"
            exit 1
        fi
    fi
 
    echo "Start PHP server"
    php --server localhost:${PHP_PORT} --docroot $MAHARAROOT/htdocs &> /tmp/php.log &
    SERVER=$!
 
    BEHATCONFIGFILE=`php htdocs/testing/frameworks/behat/cli/util.php --config`
    echo "Run Behat..."
 
 
    OPTIONS=''
    if [ $ACTION = 'rundebug' -o $ACTION = 'rundebugheadless' ]
    then
        OPTIONS=$OPTIONS"--format=pretty --format=html"
    else
        OPTIONS=$OPTIONS" --format=pretty --format=html"       
    fi
 
    if [ "$TAGS" ]; then
        OPTIONS=$OPTIONS" --tags "$TAGS
    elif [ "$FEATURE" ]; then
        OPTIONS=$OPTIONS" "$FEATURE
    fi
 
    echo
    echo "=================================================="
    echo
 
    echo ./external/vendor/bin/behat --config $BEHATCONFIGFILE $OPTIONS
    ./external/vendor/bin/behat --config $BEHATCONFIGFILE $OPTIONS
 
    echo
    echo "=================================================="
    echo
    echo "Shutdown"
    cleanup 0
else
    # Help text if we got an unexpected (or empty) first param
    echo "Expected something like one of the following:"
    echo
    echo "# Run all tests:"
    echo "mahara_behat run"
    echo ""
    echo "# Run tests in file \"example.feature\""
    echo "mahara_behat run example.feature"
    echo ""
    echo "# Run tests with specific tag:"
    echo "mahara_behat run @tagname"
    echo ""
    echo "# Run tests with extra debug output:"
    echo "mahara_behat rundebug"
    echo "mahara_behat rundebug example.feature"
    echo "mahara_behat rundebug @tagname"
    echo ""
    echo "# Run in headless mode (requires xvfb):"
    echo "mahara_behat runheadless"
    echo ""
    echo "# Run in headless mode with extra debug output:"
    echo "mahara_behat rundebugheadless"
    echo ""
    echo "# Enable test site:"
    echo "mahara_behat action enable"
    echo ""
    echo "# Disable test site:"
    echo "mahara_behat action disable"
    echo ""
    echo "# List other actions you can perform:"
    echo "mahara_behat action help"
    exit 1
fi
 
Step 4 :- Change Behat hooks for getting screenshots :-
 
 
<?php
/**
* @package    mahara
* @subpackage test/behat
* @author    Son Nguyen, Catalyst IT Ltd
* @license    http://www.gnu.org/copyleft/gpl.html GNU GPL version 3 or later
* @copyright  For copyright information on Mahara, please see the README file distributed with this software.
* @copyright  portions from mahara Behat, 2013 David Monllaó
*
*/
 
/**
* Behat accepts hooks after and before each
* suite, feature, scenario and step.
*
* This methods are used by Behat CLI command.
*
*/
 
 
require_once(__DIR__ . '/BehatBase.php');
 
use Behat\Behat\Event\SuiteEvent as SuiteEvent,
    Behat\Behat\Event\FeatureEvent as FeatureEvent,
    Behat\Behat\Event\ScenarioEvent as ScenarioEvent,
    Behat\Behat\Event\StepEvent as StepEvent,
    Behat\Mink\Exception\DriverException as DriverException,
    WebDriver\Exception\NoSuchWindow as NoSuchWindow,
    WebDriver\Exception\UnexpectedAlertOpen as UnexpectedAlertOpen,
    WebDriver\Exception\UnknownError as UnknownError,
    WebDriver\Exception\CurlExec as CurlExec,
    WebDriver\Exception\NoAlertOpenError as NoAlertOpenError;
 
use Behat\Behat\Hook\Scope\BeforeStepScope;
use Behat\Behat\Hook\Scope\AfterStepScope;
/**
* Hooks to the behat process.
*
* Implement hooks after and before each
* suite, feature, scenario and step for Mahara
*
* Throws generic Exception because they are captured by Behat.
*
*/
class BehatHooks extends BehatBase {
 
    /**
    * @var For actions that should only run once.
    */
    protected static $initprocessesfinished = false;
 
    /**
    * Some exceptions can only be caught in a before or after step hook,
    * they can not be thrown there as they will provoke a framework level
    * failure, but we can store them here to fail the step in i_look_for_exceptions()
    * which result will be parsed by the framework as the last step result.
    *
    * @var Null or the exception last step throw in the before or after hook.
    */
    protected static $currentstepexception = null;
 
    /**
    * If we are saving any kind of dump on failure we should use the same parent dir during a run.
    *
    * @var The parent dir name
    */
    protected static $faildumpdirname = false;
 
    /**
    * Make sure the test site is installed and enabled for behat tests.
    *
    * @static
    * @throws Exception
    * @BeforeSuite
    */
    public static function before_suite($event) {
        global $CFG, $db, $SESSION, $USER, $THEME;
 
        // Defined only when the behat CLI command is running, the mahara init setup process will
        // read this value and switch to $CFG->behat_dataroot and $CFG->behat_dbprefix instead of
        // the normal site.
        define('BEHAT_UTIL', 1);
 
        define('INTERNAL', 1);
        define('CLI', 1);
 
        // With BEHAT_TEST we will be using $CFG->behat_* instead of $CFG->dataroot, $CFG->dbprefix and $CFG->wwwroot.
        require_once(dirname(dirname(dirname(dirname(__DIR__)))) . '/init.php');
 
        // Now that we are in Mahara env.
        require_once('upgrade.php');
        require_once('file.php');
        require_once(dirname(dirname(dirname(__DIR__))) . '/classes/TestLock.php');
        require_once(__DIR__ . '/util.php');
 
        // Initialize and enable the test site if possible
        $statuscode = BehatTestingUtil::get_test_env_status();
        switch ($statuscode) {
            case BEHAT_MAHARA_EXITCODE_OUTOFDATEDB:
                BehatTestingUtil::drop_site();
            case BEHAT_MAHARA_EXITCODE_NOTINSTALLED:
                BehatTestingUtil::install_site();
            case BEHAT_MAHARA_EXITCODE_NOTENABLED:
                BehatTestingUtil::start_test_mode();
            case 0:
                break;
            default:
                throw new Exception($statuscode.'The test site is not ready to test.
    Please run php ' . dirname(dirname(dirname(dirname(__DIR__)))) . 'testing/frameworks/behat/cli/init.php to initialize the test site');;
            break;
        }
 
        if (!empty($CFG->behat_faildump_path) && !is_writable($CFG->behat_faildump_path)) {
            throw new Exception('You set $CFG->behat_faildump_path to a non-writable directory');
        }
    }
 
    /**
    * Clean test database and dataroot and disable the test environment.
    *
    * @static
    * @throws Exception
    * @AfterSuite
    */
    public static function after_suite($event) {
        global $CFG, $db, $SESSION, $USER, $THEME;
 
        // Check if the test environment is ready: dataroot, database, server
        if (!defined('BEHAT_TEST')) {
            throw new Exception('The test site is not enabled for behat testing');
        }
 
        //BehatTestingUtil::drop_site();
        BehatTestingUtil::stop_test_mode();
    }
 
    /**
    * Resets the test environment.
    *
    * @throws Exception If here we are not using the test database it should be because of a coding error
    * @BeforeScenario
    */
    public function before_scenario($event) {
        global $CFG;
 
        // Check if the test environment is ready: dataroot, database, server
        if (!defined('BEHAT_TEST')) {
            throw new Exception('The test site is not enabled for behat testing');
        }
 
        // Check if the browser is running and supports javascript
        $moreinfo = 'More info in ' . BehatCommand::DOCS_URL . '#Running_tests';
        $driverexceptionmsg = 'Selenium server is not running, you need to start it to run tests that involve Javascript. ' . $moreinfo;
        try {
            $session = $this->getSession();
        }
        catch (CurlExec $e) {
            // Exception thrown by WebDriver, so only @javascript tests will be caugth; in
            throw new Exception($driverexceptionmsg);
        }
        catch (DriverException $e) {
            throw new Exception($driverexceptionmsg);
        }
        catch (UnknownError $e) {
            // Generic 'I have no idea' Selenium error. Custom exception to provide more feedback about possible solutions.
            throw new Exception($e);
        }
 
        // Register the named selectors for mahara
        if (self::is_first_scenario()) {
            BehatSelectors::register_mahara_selectors($session);
            BehatContextHelper::set_session($session);
            // Reset the browser
            $session->restart();
            // Run all test with medium (1024x768) screen size, to avoid responsive problems.
            $this->resize_window('medium');
        }
 
        // Reset $SESSION.
        $_SESSION = array();
        $SESSION = new stdClass();
        $_SESSION['SESSION'] =& $SESSION;
 
        BehatTestingUtil::reset_database();
        BehatTestingUtil::reset_dataroot();
 
        // Reset the nasty strings list used during the last test.
        //NastyStrings::reset_used_strings();
 
        // Set current user is admin
 
        // Start always in the the homepage.
        try {
            // Let's be conservative as we never know when new upstream issues will affect us.
            $session->visit($this->locate_path('/'));
        }
        catch (UnknownError $e) {
            throw new Exception($e);
        }
 
        // Checking that the root path is a mahara test site.
        if (!self::$initprocessesfinished) {
            $notestsiteexception = new Exception('The base URL (' . $CFG->wwwroot . ') is not a behat test site, ' .
                'ensure you started the built-in web server in the correct directory or your web server is correctly started and set up');
            $this->find("xpath", "//head/child::title[contains(., '" . BehatTestingUtil::BEHATSITENAME . "')]", $notestsiteexception);
 
            self::$initprocessesfinished = true;
        }
    }
 
    /**
    * Wait for JS to complete before beginning interacting with the DOM.
    *
    * Executed only when running against a real browser. We wrap it
    * all in a try & catch to forward the exception to i_look_for_exceptions
    * so the exception will be at scenario level, which causes a failure, by
    * default would be at framework level, which will stop the execution of
    * the run.
    *
    * @BeforeStep
    */
 
//    public function before_step(BeforeStepScope $scope) {
 
//        if ($this->running_javascript()) {
//            try {
//                $this->wait_for_pending_js();
//                self::$currentstepexception = null;
//            }
//            catch (Exception $e) {
//                self::$currentstepexception = $e;
//            }
//        }
//    }
 
 
/**
        * @BeforeScenario
        *
        * @param BeforeScenarioScope $scope
        *
        */
        public function setUpTestEnvironment($scope)
        {
            $this->currentScenario = $scope->getScenario();
        }
 
 
    /**
    * Wait for JS to complete after finishing the step.
    *
    * With this we ensure that there are not AJAX calls
    * still in progress.
    *
    * Executed only when running against a real browser. We wrap it
    * all in a try & catch to forward the exception to i_look_for_exceptions
    * so the exception will be at scenario level, which causes a failure, by
    * default would be at framework level, which will stop the execution of
    * the run.
    *
    * Take screenshot if the step failed
    *
    * This includes creating an HTML dump of the content if there was a failure.
    *
    * @AfterStep
    */
    public function after_step(AfterStepScope $scope) {
        global $CFG;
 
        if ($this->running_javascript()) {
//            && in_array($scope->getStep()->getKeywordType(), array('Given', 'When'))) {
            try {
                $this->wait_for_pending_js();
                self::$currentstepexception = null;
            }
            catch (UnexpectedAlertOpen $e) {
                self::$currentstepexception = $e;
 
                // Accepting the alert so the framework can continue properly running
                // the following scenarios. Some browsers already closes the alert, so
                // wrapping in a try & catch.
                try {
                    $this->getSession()->getDriver()->getWebDriverSession()->accept_alert();
                }
                catch (Exception $e) {
                    // Catching the generic one as we never know how drivers reacts here.
                }
            }
            catch (Exception $e) {
                self::$currentstepexception = $e;
            }
        }
        if (!empty($CFG->behat_faildump_path) &&
                $scope->getTestResult()->getResultCode() === 99) {
            $this->take_contentdump($scope);
        }
 
//if test has failed, and is not an api test, get screenshot
            if(!$scope->getTestResult()->isPassed())
            {
                //create filename string
 
              $featureFolder = preg_replace('/\W/', '', $scope->getFeature()->getTitle());
                 
                              $scenarioName = $this->currentScenario->getTitle();
                              $fileName = preg_replace('/\W/', '', $scenarioName) . '.png';
 
                //create screenshots directory if it doesn't exist
                if (!file_exists('/var/lib/maharadata/master_behat/behat/results/html/assets/screenshots/' . $featureFolder)) {
                    mkdir('/var/lib/maharadata/master_behat/behat/results/html/assets/screenshots/' . $featureFolder);
                }
 
                //take screenshot and save as the previously defined filename
                //$this->getDriver()->takeScreenshot('/var/lib/maharadata/master_behat/behat/results/html/assets/screenshots/' . $featureFolder . '/' . $fileName);
                // For Selenium2 Driver you can use:
                file_put_contents('/var/lib/maharadata/master_behat/behat/results/html/assets/screenshots/' . $featureFolder . '/' . $fileName, $this->getSession()->getDriver()->getScreenshot());
            }
    }
 
    /**
    * Getter for self::$faildumpdirname
    *
    * @return string
    */
    protected function get_run_faildump_dir() {
        return self::$faildumpdirname;
    }
 
    /**
    * Take screenshot when a step fails.
    *
    * @throws Exception
    * @param AfterStepScope $scope
    */
    protected function take_screenshot(AfterStepScope $scope) {
        // Goutte can't save screenshots.
        if (!$this->running_javascript()) {
            return false;
        }
 
        list ($dir, $filename) = $this->get_faildump_filename($scope, 'png');
        $this->saveScreenshot($filename, $dir);
    }
 
    /**
    * Take a dump of the page content when a step fails.
    *
    * @throws Exception
    * @param AfterStepScope $scope
    */
    protected function take_contentdump(AfterStepScope $scope) {
        list ($dir, $filename) = $this->get_faildump_filename($scope, 'html');
 
        $fh = fopen($dir . DIRECTORY_SEPARATOR . $filename, 'w');
        fwrite($fh, $this->getSession()->getPage()->getContent());
        fclose($fh);
    }
 
    /**
    * Determine the full pathname to store a failure-related dump.
    *
    * This is used for content such as the DOM, and screenshots.
    *
    * @param AfterStepScope $scope
    * @param String $filetype The file suffix to use. Limited to 4 chars.
    */
    protected function get_faildump_filename(AfterStepScope $scope, $filetype) {
        global $CFG;
 
        // All the contentdumps should be in the same parent dir.
        if (!$faildumpdir = self::get_run_faildump_dir()) {
            $faildumpdir = self::$faildumpdirname = date('Ymd_His');
 
            $dir = $CFG->behat_faildump_path . DIRECTORY_SEPARATOR . $faildumpdir;
 
            if (!is_dir($dir) && !mkdir($dir, $CFG->directorypermissions, true)) {
                // It shouldn't, we already checked that the directory is writable.
                throw new Exception('No directories can be created inside $CFG->behat_faildump_path, check the directory permissions.');
            }
        }
        else {
            // We will always need to know the full path.
            $dir = $CFG->behat_faildump_path . DIRECTORY_SEPARATOR . $faildumpdir;
        }
 
        // The scenario title + the failed step text.
        // We want a i-am-the-scenario-title_i-am-the-failed-step.$filetype format.
        $filename = $scope->getStep()->getParent()->getTitle() . '_' . $scope->getStep()->getText();
        $filename = preg_replace('/([^a-zA-Z0-9\_]+)/', '-', $filename);
 
        // File name limited to 255 characters. Leaving 4 chars for the file
        // extension as we allow .png for images and .html for DOM contents.
        $filename = substr($filename, 0, 250) . '.' . $filetype;
 
        return array($dir, $filename);
    }
 
    /**
    * Internal step definition to find exceptions, debugging() messages and PHP debug messages.
    *
    * Part of BehatHooks class as is part of the testing framework, is auto-executed
    * after each step so no features will splicitly use it.
    *
    * @Given /^I look for exceptions$/
    * @throw Exception Unknown type, depending on what we caught in the hook or basic \Exception.
    */
    public function i_look_for_exceptions() {
 
        // If the step already failed in a hook throw the exception.
        if (!is_null(self::$currentstepexception)) {
            throw self::$currentstepexception;
        }
 
        // Wrap in try in case we were interacting with a closed window.
        try {
 
            // Exceptions.
            $exceptionsxpath = "//div[@data-rel='fatalerror']";
            // Debugging messages.
            $debuggingxpath = "//div[@data-rel='debugging']";
            // PHP debug messages.
            $phperrorxpath = "//div[@data-rel='phpdebugmessage']";
            // Any other backtrace.
            $othersxpath = "(//*[contains(., ': call to ')])[1]";
 
            $xpaths = array($exceptionsxpath, $debuggingxpath, $phperrorxpath, $othersxpath);
            $joinedxpath = implode(' | ', $xpaths);
 
            // Joined xpath expression. Most of the time there will be no exceptions, so this pre-check
            // is faster than to send the 4 xpath queries for each step.
            if (!$this->getSession()->getDriver()->find($joinedxpath)) {
                return;
            }
 
            // Exceptions.
            if ($errormsg = $this->getSession()->getPage()->find('xpath', $exceptionsxpath)) {
 
                // Getting the debugging info and the backtrace.
                $errorinfoboxes = $this->getSession()->getPage()->findAll('css', 'div.alert-error');
                // If errorinfoboxes is empty, try find notifytiny (original) class.
                if (empty($errorinfoboxes)) {
                    $errorinfoboxes = $this->getSession()->getPage()->findAll('css', 'div.notifytiny');
                }
                $errorinfo = $this->get_debug_text($errorinfoboxes[0]->getHtml()) . "\n" .
                    $this->get_debug_text($errorinfoboxes[1]->getHtml());
 
                $msg = "mahara exception: " . $errormsg->getText() . "\n" . $errorinfo;
                throw new \Exception(html_entity_decode($msg));
            }
 
            // Debugging messages.
            if ($debuggingmessages = $this->getSession()->getPage()->findAll('xpath', $debuggingxpath)) {
                $msgs = array();
                foreach ($debuggingmessages as $debuggingmessage) {
                    $msgs[] = $this->get_debug_text($debuggingmessage->getHtml());
                }
                $msg = "debugging() message/s found:\n" . implode("\n", $msgs);
                throw new \Exception(html_entity_decode($msg));
            }
 
            // PHP debug messages.
            if ($phpmessages = $this->getSession()->getPage()->findAll('xpath', $phperrorxpath)) {
 
                $msgs = array();
                foreach ($phpmessages as $phpmessage) {
                    $msgs[] = $this->get_debug_text($phpmessage->getHtml());
                }
                $msg = "PHP debug message/s found:\n" . implode("\n", $msgs);
                throw new \Exception(html_entity_decode($msg));
            }
 
            // Any other backtrace.
            // First looking through xpath as it is faster than get and parse the whole page contents,
            // we get the contents and look for matches once we found something to suspect that there is a backtrace.
            if ($this->getSession()->getDriver()->find($othersxpath)) {
                $backtracespattern = '/(line [0-9]* of [^:]*: call to [\->&;:a-zA-Z_\x7f-\xff][\->&;:a-zA-Z0-9_\x7f-\xff]*)/';
                if (preg_match_all($backtracespattern, $this->getSession()->getPage()->getContent(), $backtraces)) {
                    $msgs = array();
                    foreach ($backtraces[0] as $backtrace) {
                        $msgs[] = $backtrace . '()';
                    }
                    $msg = "Other backtraces found:\n" . implode("\n", $msgs);
                    throw new \Exception(htmlentities($msg));
                }
            }
 
        }
        catch (NoSuchWindow $e) {
            // If we were interacting with a popup window it will not exists after closing it.
        }
    }
 
    /**
    * Converts HTML tags to line breaks to display the info in CLI
    *
    * @param string $html
    * @return string
    */
    protected function get_debug_text($html) {
 
        // Replacing HTML tags for new lines and keeping only the text.
        $notags = preg_replace('/<+\s*\/*\s*([A-Z][A-Z0-9]*)\b[^>]*\/*\s*>*/i', "\n", $html);
        return preg_replace("/(\n)+/s", "\n", $notags);
    }
 
    /**
    * Returns whether the first scenario of the suite is running
    *
    * @return bool
    */
    protected static function is_first_scenario() {
        return !(self::$initprocessesfinished);
    }
 
    /**
    * Throws an exception after appending an extra info text.
    *
    * @throws Exception
    * @param UnknownError $exception
    * @return void
    */
    protected function throw_unknown_exception(UnknownError $exception) {
        $text = get_string('unknownexceptioninfo', 'tool_behat');
        throw new Exception($text . PHP_EOL . $exception->getMessage());
    }
 
}


5- Create a folder results under /var/lib/maharadata/master_behat/behat/
Go here for tips: https://wiki.mahara.org/wiki/Testing/Behat_Testing/Error_%26_Solutions
6- Create a folder html under /var/lib/maharadata/master_behat/behat/results
7- Create a folder screenshots under /var/lib/maharadata/master_behat/behat/results/html/assests
8- Run the test and delete any screenshot before running tests from screenshot folder.
Note: Screenshots are now manually deleted, we should find a way to delete the screenshot before running a behat tests

Latest revision as of 12:21, 15 Haziran 2023

Note: These instructions for the Behat setup are only for machines running Linux. They will not work for Windows machines.

1. Set up your developer environment if you haven't already done so.

2. Install Behat's dependencies: 

$ sudo apt-get install curl openjdk-8-jre-headless

3. Add the following config settings to the bottom of your Mahara config.php file inside the htdocs/ subdirectory of the Mahara codebase.

Note: If /var/www/maharadata is not where you created your dataroot, you'll need to replace that with the correct path in the following commands
// Behat config
$cfg->behat_test = true; // Turn this off when you are not behat testing
$cfg->behat_dbprefix = 'behat_'; // must not empty
$cfg->behat_dataroot = "/var/lib/maharadata/main_behat"; // The Behat copy of maharadata.
$cfg->behat_wwwroot = 'http://localhost:8000'; // Must be this
$cfg->behat_selenium2 = "http://127.0.0.1:4444/wd/hub"; // Must be this

// If you want failed step screenshots appear directly on screen while the step fails (only Ubuntu)
$cfg->behat_view_screenshots = true;
Note: There should be a behat_dataroot for each Mahara instance that you set up. Here the one for the main branch / this Mahara instance is created.
Note: If the directory for $cfg->behat_dataroot does not exist then it will need to be created.

4. Make your Behat data directory (check this matches what you set in config.php): 

$ sudo mkdir /var/lib/maharadata/main_behat

5. Make the directory and any subdirectories writeable by Mahara (check the directory is correct): 

$ sudo chmod 777 -R /var/lib/maharadata/main_behat

6. Change the directory and any subdirectories permissions to be owned by apache user (check the directory is correct): 

$ sudo chown -R www-data:www-data /var/lib/maharadata/main_behat
  • For Ubuntu, apache runs with user www-data
  • For Centos, apache runs with user apache

7. Run Behat tests (change into your Mahara code directory first) as the apache user: 

$ cd
$ cd code/mahara
./test/behat/mahara_behat.sh run

Or if you have sudo access: 

$ cd
$ cd code/mahara
sudo -u www-data ./test/behat/mahara_behat.sh run


For the first time of running Behat, you need to wait for the Behat environment initialisation. This can take a while.

To run all tests: 

./test/behat/mahara_behat.sh run

To run your specific tests marked with @yourtags: 

./test/behat/mahara_behat.sh run @yourtags

To run a particular feature file: 

./test/behat/mahara_behat.sh run my_file.feature

The run / runheadless / rundebug / rundebugheadless / runfresh are interchangable with run in above commands

Running Behat tests with html report and screenshots on failed steps

To run tests with html output, add the flag 'html' to your test run command, e.g: 

./test/behat/mahara_behat.sh run create_page.feature html

This will automatically open an html report of the test run in your browser. If there were failed steps, the the html report plugin takes a screenshot of the page that failed. You can find the screenshots in your behat dataroot (usually /var/lib/maharadata/main_behat) at the following path: behat/html_results/<feature title>/<scenario title>.png

Ubuntu only (you need the image viewer 'eog'): If you set 

$cfg->behat_view_screenshots = true;

in your config.php file then the images will be opened up in image browser.

Hopefully we will rig up the report to link to the screenshot soon.

How to Run Mahara behat test on Chrome for versions older than 17.04

Note: Mahara behat is running on chrome driver by default in 17:04+

This is steps for older versions of Mahara

1. Download chromedriver here http://www.seleniumhq.org/download/ ( download the latest release)

2. Start selenium Server with chrome driver

$ java -jar selenium-server-standalone-2.53.1.jar -Dwebdriver.chrome.driver=path of chromedriver

3. Change the behat.yml file as follows,

Here is the file path var/lib/maharadata/main_behat/behat.yml

when you open the beaht.yml file replace the following code with the lines that contain sessions to go

javascript_session: selenium2 

        selenium2:
          browser: chrome
           goutte: ~

4. Run the behat test without rundebug

for example ./test/behat/mahara_behat.sh run example.feature

Debugging

Go here for tips: https://wiki.mahara.org/wiki/Testing/Behat_Testing/Error_%26_Solutions

Retrieved from ‘https://wiki.mahara.org/index.php?title=Testing_Area/Behat_Testing/Setup&oldid=13718’