Switching to a window with no name - codeception

Question

Using the Codeception testing framework and Selenium 2 module to test a website, I end up following a hyperlink that opens a new window with no name. As a result the switchToWindow() function will not work because it is trying to switch to the parent window (which I'm currently on). Without being able to switch to the new window I cannot perform any testing on it.
<a class="external" target="_blank" href="http://mylocalurl/the/page/im/opening">
View Live
</a>
Using both Chrome and Firefox debugging tools I can confirm the new window doesn't have a name, and I cannot give it one because I cannot edit the HTML page I am working on. Ideally I would have changed the HTML to use javascript onclick="window.open('http://mylocalurl/the/page/im/opening', 'myPopupWindow') however this is not possible in my case.
I've looked around on the Selenium forums without any clear method to tackle this problem, and Codeception doesn't appear to have much functionality around this.

Answer 1

After searching around on the Selenium forum and some helpful prods from #Mark Rowlands, I got it to work using raw Selenium.
// before codeception v2.1.1, just typehint on \Webdriver
$I->executeInSelenium(function (\Facebook\WebDriver\Remote\RemoteWebDriver $webdriver) {
$handles=$webdriver->window_handles();
$last_window = end($handles);
$webdriver->focusWindow($last_window);
});
Returning back to the parent window was easy because I could just use Codeception's switchToWindow method:
$I->switchToWindow();

Answer 2

Building on the accepted answer, in Codeception 2.2.9 I was able to add this code to the Acceptance Helper and it seems to work.
/**
* #throws \Codeception\Exception\ModuleException
*/
public function switchToNewWindow()
{
$webdriver = $this->getModule('WebDriver')->webDriver;
$handles = $webdriver->getWindowHandles();
$lastWindow = end($handles);
$webdriver->switchTo()->window($lastWindow);
}
Then in the test class I can do this:
$I->click('#somelink');
$I->switchToNewWindow();
// Some assertions...
$I->switchToWindow(); // this switches back to the previous window
I had a heck of a time trying to figure out how to do this by just searching google, so I hope it helps someone else.

Answer 3

Try this,
String parentWindowHandle = browser.getWindowHandle(); // save the current window handle.
WebDriver popup = null;
Iterator<String> windowIterator = browser.getWindowHandles();
while(windowIterator.hasNext()) {
String windowHandle = windowIterator.next();
popup = browser.switchTo().window(windowHandle);
}
make sure to return on parent window using,
browser.close(); // close the popup.
browser.switchTo().window(parentWindowHandle); // Switch back to parent window.
I hope will help you.

Answer 4

Using Codeception 2.2+ it looks like this:
$I->executeInSelenium(function (\Facebook\WebDriver\Remote\RemoteWebDriver $webdriver) {
$handles = $webdriver->getWindowHandles();
$lastWindow = end($handles);
$webdriver->switchTo()->window($lastWindow);
});