MDL-48374 behat: new steps for detecting page loads.

This commit is contained in:
Tim Hunt 2014-11-28 14:54:27 +00:00 committed by Sam Hemelryk
parent d87bcfb325
commit a109a3ca35

View File

@ -32,7 +32,8 @@ use Behat\Mink\Exception\ExpectationException as ExpectationException,
Behat\Mink\Exception\DriverException as DriverException,
WebDriver\Exception\NoSuchElement as NoSuchElement,
WebDriver\Exception\StaleElementReference as StaleElementReference,
Behat\Gherkin\Node\TableNode as TableNode;
Behat\Gherkin\Node\TableNode as TableNode,
Behat\Behat\Context\Step\Given as Given;
/**
* Cross component steps definitions.
@ -55,6 +56,13 @@ class behat_general extends behat_base {
*/
const MAIN_WINDOW_NAME = '__moodle_behat_main_window_name';
/**
* @var string when we want to check whether or not a new page has loaded,
* we first write this unique string into the page. Then later, by checking
* whether it is still there, we can tell if a new page has been loaded.
*/
const PAGE_LOAD_DETECTION_STRING = 'new_page_not_loaded_since_behat_started_watching';
/**
* Opens Moodle homepage.
*
@ -1221,4 +1229,47 @@ class behat_general extends behat_base {
$maxexpectedsize, $this->getSession());
}
}
/**
* Prepare to detect whether or not a new page has loaded (or the same page reloaded) some time in the future.
* @Given /^I start watching to see if a new page loads$/
*/
public function i_start_watching_to_see_if_a_new_page_loads() {
if (!$this->running_javascript()) {
throw new DriverException('Page load detection requires JavaScript.');
}
$this->getSession()->evaluateScript(
'var span = document.createElement("span");
span.innerHTML = "' . self::PAGE_LOAD_DETECTION_STRING . '";
span.setAttribute("style", "display: none;");
document.body.appendChild(span);');
}
/**
* Verify that a new page has loaded (or the same page has reloaded) since the last "I start watching to see if a new page loads" step.
* @Given /^a new page should have loaded since I started watching$/
*/
public function a_new_page_should_have_loaded_since_i_started_watching() {
return array(new Given("\"{$this->get_page_load_xpath()}\" " .
"\"xpath_element\" should not exist"));
}
/**
* Verify that a new page has not loaded (or the same page has reloaded) since the last "I start watching to see if a new page loads" step.
* @Given /^a new page should not have loaded since I started watching$/
*/
public function a_new_page_should_not_have_loaded_since_i_started_watching() {
return array(new Given("\"{$this->get_page_load_xpath()}\" " .
"\"xpath_element\" should exist"));
}
/**
* Helper used by {@link a_new_page_should_have_loaded_since_i_started_watching}
* and {@link a_new_page_should_not_have_loaded_since_i_started_watching}
* @return string xpath expression.
*/
protected function get_page_load_xpath() {
return "//span[@style = 'display: none;'][. = '" . self::PAGE_LOAD_DETECTION_STRING . "']";
}
}