Wait for AJAX Complete (Selenium Web Driver + JUnit + ExtJS)

With AJAX, Seleinum testing can have a lot of tricky timing issue. Tests can fail due to slightly delayed AJAX response. Implicit wait solved the problem to some extent, but would be nicer to have a way to wait for all AJAX calls to be finished.

Here is a solution for ExtJS AJAX requests:

	public waitForAjax(WebDriver driver, int timeOutInSeconds) {
	(new WebDriverWait(driver, timeOutInSeconds))
	.until(new ExpectedCondition<Boolean>() {
	public Boolean apply(WebDriver d) {
	return (Boolean) ((JavascriptExecutor) d)
	.executeScript("return !(ExtJSUtil.hasActiveAjaxCalls(Ext.Ajax.requests && !_.isEmpty(Ext.Ajax.requests));");
	}
	});
	}

view raw waitForAjax.java hosted with ❤ by GitHub

Core concept is this JS code: Ext.Ajax.requests && !_.isEmpty(Ext.Ajax.requests). It works for ExtJS 4 only, might change for future or older version of ExtJS due to how AJAX calls are managed.