java - Verify list elements by Selenium WebDriver

Question

WebElement select = myD.findElement(By.xpath("//*[@id='custfoodtable']/tbody/tr[2]/td/div/select"));
List<WebElement> allOptions = select.findElements(By.tagName("option"));
for (WebElement option : allOptions) {
    System.out.println(String.format("Value is: %s", option.getAttribute("value")));
    option.click();
    Object vaLue = "Gram";
    if (option.getAttribute("value").equals(vaLue)) {
        System.out.println("Pass");
    } else {
        System.out.println("fail");
    }
}

I can verify one element in a list, but there are like 20 elements in a dropdown I need to verify and I do not want to use above logic 20 times. Is there any easier way to do it?

Answer 1

Don't use the for-each construct. It's only useful when iterating over a single Iterable / array. You need to iterate over the List<WebElement> and the array simultaneously.

// assert that the number of found <option> elements matches the expectations
assertEquals(exp.length, allOptions.size());
// assert that the value of every <option> element equals the expected value
for (int i = 0; i < exp.length; i++) {
    assertEquals(exp[i], allOptions.get(i).getAttribute("value"));
}

---

EDIT after OP's changed his question a bit:

Assuming you have an array of expected values, you can do this:

String[] expected = {"GRAM", "OUNCE", "POUND", "MILLIMETER", "TSP", "TBSP", "FLUID_OUNCE"};
List<WebElement> allOptions = select.findElements(By.tagName("option"));

// make sure you found the right number of elements
if (expected.length != allOptions.size()) {
    System.out.println("fail, wrong number of elements found");
}
// make sure that the value of every <option> element equals the expected value
for (int i = 0; i < expected.length; i++) {
    String optionValue = allOptions.get(i).getAttribute("value");
    if (optionValue.equals(expected[i])) {
        System.out.println("passed on: " + optionValue);
    } else {
        System.out.println("failed on: " + optionValue);
    }
}

This code essentially does what my first code did. The only real difference is that now you're doing the work manually and are printing the results out.

Before, I used the assertEquals() static method from the Assert class of the JUnit framework. This framework is a de-facto standard in writing Java tests and the assertEquals() method family is the standard way to verify the results of your program. They make sure the arguments passed into the method are equal and if they are not, they throw an AssertionError.

Anyway, you can do it the manual way, too, no problem.