Behat and “The current node list is empty.” error.

If your receiving the error “The current node list is empty” while using Behat, then likely your project is returning an HTTP 500 error. This may be because your bundle depends on some other bundle not available in your test environment. This was the case when for me when testing a bundle on travis-ci and i was not able to find documentation on this error.

One solution as suggested on github is to try dumping the contents of the scraper/browser to see what kind of error your getting.

     /**
     * @Then /^I dump the contents$/
     */
    public function iDumpTheContents()
    {
        print_r($this->getSession()->getPage()->getContent());
        //or print_r($this->getSession()->getDriver()->getContent());
        // The following produces "The current node list is empty."
        //print_r($this->getSession()->getDriver()->getText('//html'));
    }

/**

* @Then /^I dump the contents$/

public function iDumpTheContents()

{

print_r($this->getSession()->getPage()->getContent());

//or print_r($this->getSession()->getDriver()->getContent());

// The following produces "The current node list is empty."

//print_r($this->getSession()->getDriver()->getText('//html'));

}

However that will likely not give you any output if the server is returning an HTTP 500 internal server error. Your best bet is to just check your logs and do a search for any errors.

If your trying to run your functional tests on travis-ci then you might want to check out this great article on running Behat scenarios in isolation of your project.

Best of luck.

Simple Method for Checking for Order With Behat

While needing to write a test to check the order of 2 items (within a given CSS query) in Behat, I did a little googling and came across this website here.

The tutorial is great and i just wanted to give a shout out to the author for their great content. I also made a slight change to include testing for the existing of the 2 items.

Here is my slightly updated version:

    /**
     * 
     * @Then /^"([^"]*)" should precede "([^"]*)" for the query "([^"]*)"$/
     */
    public function shouldPrecedeForTheQuery($textBefore, $textAfter, $cssQuery)
    {
		// http://neverstopbuilding.net/simple-method-for-checking-for-order-with-behat/
        $items = array_map(
            function ($element) {
                return $element->getText();
            },
            $this->getPage()->findAll('css', $cssQuery)
        );

		WebTestCase::assertTrue(in_array($textBefore, $items), 'The before text was not found!');
		WebTestCase::assertTrue(in_array($textAfter,  $items), 'The after text was not found!');
			
        WebTestCase::assertGreaterThan(
            array_search($textBefore, $items),
            array_search($textAfter, $items),
            "$textBefore does not proceed $textAfter"
        );
    }

/**

* @Then /^"([^"]*)" should precede "([^"]*)" for the query "([^"]*)"$/

public function shouldPrecedeForTheQuery($textBefore, $textAfter, $cssQuery)

{

// http://neverstopbuilding.net/simple-method-for-checking-for-order-with-behat/

$items = array_map(

function ($element) {

return $element->getText();

$this->getPage()->findAll('css', $cssQuery)

);

WebTestCase::assertTrue(in_array($textBefore, $items), 'The before text was not found!');

WebTestCase::assertTrue(in_array($textAfter, $items), 'The after text was not found!');

WebTestCase::assertGreaterThan(

array_search($textBefore, $items),

array_search($textAfter, $items),

"$textBefore does not proceed $textAfter"

);

}

You can see an example of the test i wrote using this method here.

Setting up LAMP and PHPUnit on CentOS for staging.

I needing to setup a staging environment that more or less emulates the platform of your deployment system, i needed to setup a LAMP stack with PHPUnit for testing on the target platform.

Using CentOS and help from my good friend Cordoval (you can check out his cutting edge blog at http://www.craftitonline.com) we setup using Apache, PHP and MySQL.

We used the yum package manager to get things up and running:

First we needed to setup php :

$ yum install php

1	$ yum install php

$ yum install php-dom

1	$ yum install php-dom

and mysql:

$ yum install mysql

1	$ yum install mysql

$ yum install mysql-server

1	$ yum install mysql-server

$ yum install mysql-devel

1	$ yum install mysql-devel

$ chgrp -R mysql /var/lib/mysql

1	$ chgrp -R mysql /var/lib/mysql

$ chmod -R 770 /var/lib/mysql

1	$ chmod -R 770 /var/lib/mysql

$ service mysqld start

1	$ service mysqld start

With that done, we needed to then setup PEAR:

$ yum install php-pear

1	$ yum install php-pear

Then i followed the guides found here: (http://ulaptech.blogspot.co.uk/2011/07/install-phpunit-in-rhel-centos-or.html)

I will copy the instructions but all credit goes to the link above:

1. Make sure that you’re PEAR is version 1.9.2 or above.

$ pear upgrade pear

1	$ pear upgrade pear

2. Discover all channels required.

$ pear channel-discover pear.phpunit.de

1	$ pear channel-discover pear.phpunit.de

$ pear channel-discover pear.symfony-project.com

1	$ pear channel-discover pear.symfony-project.com

$ pear channel-discover components.ez.no

1	$ pear channel-discover components.ez.no

3. Install PHPUnit with all the dependencies

$ pear install --force --alldeps channel://pear.php.net/HTTP_Request2-2.0.0RC1

1	$ pear install --force --alldeps channel://pear.php.net/HTTP_Request2-2.0.0RC1

<–

optional, at the time of writing this is beta so I had to force install it

$ pear install --alldeps phpunit/PHPUnit

1	$ pear install --alldeps phpunit/PHPUnit

4. Done. Test PHPUNIT.

$ phpunit

$ phpunit

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Tag: phpUnit

Behat and “The current node list is empty.” error.

Simple Method for Checking for Order With Behat

Setting up LAMP and PHPUnit on CentOS for staging.