UFT Descriptive Programming: When to Use It

UFT Descriptive Programming: A Comprehensive Guide on When and How to Use It

Descriptive Programming in UFT (Unified Functional Testing) represents a powerful alternative to the traditional Object Repository approach, enabling testers to create more flexible and resilient automated test scripts. This technique allows direct identification of objects in the application under test using their properties and values, rather than relying on stored object references. Understanding when to implement descriptive programming can significantly enhance the maintainability and reliability of your automation framework.

Understanding UFT Descriptive Programming Fundamentals

Descriptive Programming is a method in UFT that allows testers to identify objects during runtime without adding them to the Object Repository. Instead of referencing objects by their stored names, descriptive programming uses a collection of properties and values to uniquely identify objects in the application. This approach provides greater flexibility in test script development, particularly when dealing with dynamic applications or environments where object properties may vary.

The fundamental concept behind descriptive programming is the ability to describe objects on the fly using their distinctive characteristics. When you use the Object Repository approach, UFT stores object properties during recording and references them during execution. With descriptive programming, you bypass this storage mechanism and provide the necessary object identification details directly in your test script. This direct approach eliminates dependencies on the Object Repository and allows for more dynamic object handling.

Key components of descriptive programming include:

• Object properties (like name, id, class, etc.)
• Property values that uniquely identify objects
• Description objects that encapsulate property-value pairs
• Methods to apply these descriptions to test objects

' Basic example of descriptive programming in UFT
Browser("title:=My Application").Page("title:=Login").WebElement("name:=username").Set "testuser"

This code snippet demonstrates how to identify and interact with a web element without having it stored in the Object Repository. The properties "title" and "name" are used directly in the script to locate the objects.

When to Use Descriptive Programming in UFT

Descriptive Programming becomes particularly valuable in several scenarios where the traditional Object Repository approach falls short. Understanding these situations can help you make informed decisions about when to implement this technique in your testing strategy.

One primary use case is when dealing with objects that cannot be added to the Object Repository. This commonly occurs with dynamically generated elements, such as those created through AJAX or JavaScript frameworks. These objects often don't exist during the recording phase but appear during test execution, making them impossible to capture in a traditional Object Repository.

Descriptive programming is also essential for cross-browser testing. When your application behaves differently across various browsers, object properties may change, causing tests that rely on the Object Repository to fail. By using descriptive programming, you can create more resilient tests that adapt to these differences.

Additional scenarios where descriptive programming shines include:

• Testing environments with varying object properties
• Handling large-scale applications with thousands of objects
• Creating data-driven tests where object properties change based on input
• Testing third-party components or external applications
• Implementing framework designs that minimize Object Repository dependencies

' Example of dynamic object identification using descriptive programming
Dim usernameField
Set usernameField = Browser("CreationTime:=0").Page("title:=.*").WebElement("name:=username", "html tag:=INPUT")
usernameField.Set "testuser"

In this example, the regular expression ".*" in the page title allows the script to work across different pages, demonstrating how descriptive programming can handle dynamic scenarios.

Types of Descriptive Programming: Static vs Dynamic

Descriptive Programming can be implemented in two primary forms: static and dynamic. Understanding the differences between these approaches is crucial for selecting the most appropriate method for your specific testing needs.

Static descriptive programming involves writing object descriptions directly within the test statements. This approach is straightforward and easy to implement for simple scenarios. When using static descriptive programming, you specify all necessary properties and values inline with each test action. While this method is simple to understand and implement, it can become cumbersome for complex scenarios or when reusing the same object descriptions multiple times.

Dynamic descriptive programming, on the other hand, separates object descriptions from test actions. This approach involves creating description objects that can be reused throughout the test script. Dynamic descriptive programming offers greater flexibility and maintainability, especially for complex applications or when the same objects need to be referenced multiple times.

Here's a comparison of the two approaches:

Static Descriptive Programming:

• Pros: Simple to implement, straightforward debugging
• Cons: Code duplication, harder to maintain, less flexible

Dynamic Descriptive Programming:

• Pros: Reusable descriptions, easier maintenance, more flexible
• Cons: Requires additional setup, slightly more complex syntax

' Static descriptive programming example
Browser("title:=Application").Page("title:=Login").WebElement("name:=username").Set "testuser"
Browser("title:=Application").Page("title:=Login").WebElement("name:=password").Set "testpass"
Browser("title:=Application").Page("title:=Login").WebElement("name:=loginButton").Click

' Dynamic descriptive programming example
Dim objDesc, pgDesc, brDesc
Set brDesc = Description.Create()
brDesc("title").Value = "Application"

Set pgDesc = Description.Create()
pgDesc("title").Value = "Login"

Set objDesc = Description.Create()
objDesc("name").Value = "username"

Browser(brDesc).Page(pgDesc).WebElement(objDesc).Set "testuser"

The dynamic example shows how description objects can be created and reused, making the code more maintainable and easier to modify when object properties change.

Implementing Descriptive Programming: Syntax and Best Practices

Implementing descriptive programming effectively requires understanding its syntax and following best practices to ensure maintainable and efficient test scripts. The syntax for descriptive programming in UFT involves specifying properties and values within parentheses following the object hierarchy.

The basic syntax follows this pattern: Object("Property1:=Value1", "Property2:=Value2").Action. Each property-value pair is separated by a comma, allowing you to include multiple properties to uniquely identify objects. When implementing descriptive programming, it's crucial to select properties that are both unique and stable across test executions.

Best practices for descriptive programming include:

• Use the minimum number of properties required to uniquely identify objects
• Prefer properties that are less likely to change during application updates
• Implement error handling to manage objects that cannot be found
• Document your descriptive programming approach for team knowledge sharing
• Regularly review and update descriptive statements as the application evolves

' Example of descriptive programming with error handling
On Error Resume Next
Dim loginButton
Set loginButton = Browser("title:=Application").Page("title:=Login").WebElement("name:=loginButton", "html tag:=INPUT")

If Err.Number <> 0 Then
    Reporter.ReportEvent micFail, "Login Test", "Login button not found"
    ExitTest
End If

loginButton.Click
On Error GoTo 0

This example demonstrates how to implement error handling when using descriptive programming, which is crucial for creating robust test scripts that can handle unexpected scenarios.

Advanced Descriptive Programming Techniques

Once you've mastered the basics of descriptive programming, several advanced techniques can further enhance your test automation capabilities. These methods allow you to handle complex scenarios and create more sophisticated test scripts.

Regular expressions represent one powerful technique in descriptive programming. By using regular expressions, you can create more flexible object identification patterns that can match multiple possible values. This is particularly useful when dealing with dynamic content or when object properties follow predictable patterns.

Another advanced technique involves handling complex object hierarchies. In modern web applications, objects are often nested within multiple containers or frames. Descriptive programming provides the flexibility to navigate these complex structures by specifying properties at each level of the hierarchy.

' Example using regular expressions in descriptive programming
Dim emailField
Set emailField = Browser("title:=.*").Page("title:=.*").WebElement("name:=email.*", "regexp:=True")
emailField.Set "test@example.com"

' Example of handling complex object hierarchies
Dim frameElement, nestedButton
Set frameElement = Browser("title:=Application").Page("title:=Dashboard").Frame("name:=contentFrame")
Set nestedButton = frameElement.WebElement("id:=submitBtn", "class:=btn-primary")
nestedButton.Click

These examples demonstrate how advanced descriptive programming techniques can solve complex identification challenges in modern applications. Regular expressions provide flexibility in matching object properties, while explicit hierarchy handling allows navigation through complex application structures.

Common Challenges and Solutions in Descriptive Programming

While descriptive programming offers significant advantages, it also presents several challenges that testers must address to ensure successful implementation. Understanding these challenges and their solutions is crucial for maintaining effective automated test suites.

One common challenge is identifying unique and stable object properties. In complex applications, finding properties that consistently identify objects across different test executions can be difficult. To address this, testers should use the UFT Object Spy to thoroughly analyze object properties and select those that are least likely to change.

Performance represents another consideration when using descriptive programming. Extensive use of descriptive programming can sometimes lead to slower test execution due to the additional processing required to identify objects during runtime. Optimizing property selection and implementing caching mechanisms can help mitigate these performance issues.

Maintenance concerns also arise with descriptive programming, particularly when objects change frequently. To maintain descriptive programming scripts effectively:

• Implement a centralized location for storing and managing object descriptions
• Use version control to track changes to descriptive statements
• Regularly review and update properties as applications evolve
• Create documentation explaining the descriptive programming approach and its usage

' Example of a centralized description management approach
Class ObjectRepository
    Public Shared Function GetLoginButton()
        Dim objDesc
        Set objDesc = Description.Create()
        objDesc("name").Value = "loginButton"
        objDesc("html tag").Value = "INPUT"
        Set GetLoginButton = objDesc
    End Function
End Class

' Usage in test script
Browser("title:=Application").Page("title:=Login").WebElement(ObjectRepository.GetLoginButton).Click

This example demonstrates a centralized approach to managing object descriptions, which can significantly improve maintainability and consistency across test scripts.

Conclusion

UFT Descriptive Programming offers a powerful alternative to traditional Object Repository-based testing, providing greater flexibility and resilience in automated test scenarios. By understanding when and how to implement descriptive programming, testers can create more robust automation frameworks that adapt to changing application environments. Whether dealing with dynamic objects, cross-browser testing scenarios, or complex application structures, descriptive programming provides the tools necessary to overcome the limitations of Object Repository approaches. As automation continues to evolve, mastering descriptive programming techniques will remain essential for creating maintainable and effective test suites that can withstand the challenges of modern software development cycles.

Frequently Asked Questions

• What is UFT Descriptive Programming?
  UFT Descriptive Programming is a method that allows testers to identify objects during runtime without adding them to the Object Repository, using properties and values directly in test scripts.
• When should I use Descriptive Programming instead of Object Repository?
  Use Descriptive Programming for dynamic objects, cross-browser testing, environments with varying object properties, large-scale applications, and when minimizing Object Repository dependencies.
• What are the main types of Descriptive Programming?
  The two main types are Static Descriptive Programming, where descriptions are written directly in test statements, and Dynamic Descriptive Programming, where descriptions are separated into reusable objects.
• How does Descriptive Programming help with cross-browser testing?
  Descriptive Programming creates more resilient tests that adapt to different browser behaviors by using flexible object identification rather than relying on stored object references.
• What are common challenges when implementing Descriptive Programming?
  Common challenges include identifying unique and stable object properties, potential performance issues, and maintenance concerns when objects change frequently.