Perl Selenium::Remote::Driver test to check button element is formed? - perl

Question

I need to test web site where button is formed at the bottom of the page after
user scroll the page for two times.
I have written a small script to test if the required element is formed.
the condition tested always return false even though required element is formed in the page.
use Selenium::Remote::Driver;
use Scalar::Util qw/blessed reftype/;
my $driver= Selenium::Remote::Driver->new;
$driver->get('http://www.foo.com');
while ( 1 ) {
$query = $driver->find_element_by_xpath(q{//button[#class='button']});
#to test the if the element is present
if ( blessed($query) && $query->isa('Selenium::Remote::Driver') ) {
$query->click;
last;
}
else {
#always goes into else loop
#to go to the end of the webpage
my $script = q{window.scrollTo(0,document.body.scrollHeight);};
my $elem = $driver->execute_script($script);
}
}
Is there any way to test if the button element has been formed in the script?

Answer 1

Use the below to find the element
my $elem = $driver->find_element_by_xpath($locator);
If this doesn't return 0 you've found your element, then you could run below:
To check whether the element is displayed
$elem->is_displayed();
To check whether the element is hidden
$elem->is_hidden();
Check out more methods at: https://metacpan.org/pod/Selenium::Remote::WebElement

Answer 2

All these function return 0 when element is not found.
Read the doc carefully.
find_element_by_xpath
These functions all take a single STRING argument: the locator
search target of the element you want. If the element is found, we
will receive a WebElement. Otherwise, we will return 0. Note that
invoking methods on 0 will of course kill your script.