public void input_single() {
browser.get(contextPath.toExternalForm());
WebElement input;
input = browser.findElement(By.id("myForm:input"));
Assert.assertEquals("0", input.getAttribute("value"));
input.sendKeys("123");
WebElement submit = browser.findElement(By.id("myForm:submit"));
Graphene.guardAjax(submit).click();
Assert.assertEquals("0123", input.getAttribute("value"));
WebElement clear = browser.findElement(By.id("myForm:clear"));
Graphene.guardAjax(clear).click();