Resolving Common Issues with Custom Java Functions in Katalon Studio

26 February 2025 Stephan Petzl Leave a comment Katalon Issues

When working with Katalon Studio to enhance test cases through custom Java functions, developers often encounter challenges. This guide will walk you through a practical solution to two common problems: retrieving a TestObject and obtaining a WebDriver instance.

Problem 1: Accessing TestObject Properties

In Katalon Studio, developers may need to extract properties from a TestObject within a custom Java class. A common mistake is attempting to use String locator = object.findPropertyValue('xpath'); directly. Instead, you can implement a method to fetch field names and values effectively:

public static String getFieldNamesAndValues(final Object obj, boolean publicOnly)
        throws IllegalArgumentException, IllegalAccessException {
    Class c1 = obj.getClass();
    Map map = new HashMap();
    Field[] fields = c1.getDeclaredFields();
    for (Field field : fields) {
        String name = field.getName();
        if (publicOnly) {
            if (Modifier.isPublic(field.getModifiers())) {
                Object value = field.get(obj);
                map.put(name, value);
            }
        } else {
            field.setAccessible(true);
            Object value = field.get(obj);
            map.put(name, value);
        }
    }
    return (String) map.get("selectorCollection");
}
    

Use the above function by passing your TestObject as a parameter: getFieldNamesAndValues(TestObject, false).

Problem 2: Obtaining WebDriver Instance

Another frequent issue is accessing the WebDriver instance. Instead of trying to retrieve it directly in your Java function, pass it from Katalon Studio as follows:

// Wait for element to be present up to 10 seconds
WaitForObject.waitTillObjectPresent(DriverFactory.getWebDriver(), findTestObject('V3-Web/WaitForObject/Page_Livtten/button_Results'), 10);
    

By passing the WebDriver instance this way, you ensure seamless integration between Katalon Studio and your Java code.

Enhancing Test Automation with Repeato

If you’re looking for a robust solution to automate tests across iOS, Android, and web apps, consider using Repeato. This no-code test automation tool simplifies the creation, execution, and maintenance of automated tests. With Repeato, you can run command line scripts or JavaScript code, supporting complex task automation. Additionally, the tool’s compatibility with data-driven and keyword-driven testing, along with easy version control, makes it a practical alternative to Katalon. For more insights, explore our advanced testing techniques documentation.

Check it out!

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