Calculator Program Using QTP: Effort & Time Estimator

A specialized tool to estimate the development effort for automating a calculator application test using Micro Focus UFT (formerly QTP).

Estimated effort based on varying project complexity.

Complexity Level	Example Scenario	Estimated Hours (Intermediate Engineer)
Low	5 test cases, 15 controls	4.4 hours
Medium	20 test cases, 18 controls	14.8 hours
High	50 test cases, 25 controls	34.4 hours

What is a “Calculator Program using QTP”?

The phrase “calculator program using QTP” refers to the process of creating an automated test script with Micro Focus Unified Functional Testing (UFT), formerly known as QuickTest Professional (QTP), to validate the functionality of a calculator application. This isn’t about building a calculator in QTP, but rather using QTP’s VBScript environment to interact with a calculator’s UI, perform operations, and verify that the results are correct. It’s a classic example used in test automation training to demonstrate object identification, script logic, and result validation.

QTP Test Effort Estimation Formula and Explanation

Estimating the effort for a calculator program using QTP involves assessing several factors. This calculator uses a simplified formula to provide a baseline estimate:

Total Effort (Hours) = (BaseScriptingTime + DebuggingTime) * ExperienceMultiplier

Where:

• BaseScriptingTime: Calculated from the number of test cases and UI controls. Each element adds a base time unit.
• DebuggingTime: A percentage of the scripting time, as debugging is an integral part of development.
• ExperienceMultiplier: A factor that adjusts the total time based on the engineer’s skill level. Experts are faster, while beginners require more time.

Variable	Meaning	Unit	Typical Range
Number of Test Cases	The count of unique scenarios to be automated.	Count (unitless)	5 – 100
Number of UI Controls	The number of buttons, text fields, and labels to interact with.	Count (unitless)	10 – 50
Experience Multiplier	A factor representing the engineer’s efficiency.	Ratio (unitless)	0.75 (Expert) – 1.5 (Beginner)

Practical Examples

Example 1: Simple Sanity Check

A team wants to automate a quick sanity test for a basic calculator.

• Inputs: 10 Test Cases, 16 UI Controls, Intermediate Engineer.
• Results: This would result in an estimated 10.0 hours of work, ideal for a quick regression check within a sprint.

Example 2: Full Regression Suite

A more comprehensive project to automate all functionalities of a scientific calculator.

• Inputs: 75 Test Cases, 40 UI Controls, Beginner Engineer.
• Results: The estimate would be significantly higher, around 70.3 hours, reflecting the increased complexity and the learning curve for the engineer.

How to Use This Calculator Program Using QTP Estimator

1. Enter Test Case Count: Input the total number of test scenarios you plan to automate. This is a primary driver of the overall effort for any calculator program using qtp.
2. Enter UI Control Count: Add the number of buttons, display fields, and other GUI elements your script will need to recognize and interact with.
3. Select Experience Level: Choose the proficiency of the automation engineer who will be performing the work.
4. Provide Hourly Rate: For cost estimation, enter the average hourly rate for your team.
5. Calculate and Review: Click “Calculate Effort” to see the estimated time and cost, along with a breakdown in the chart and an updated value in the complexity table.

Key Factors That Affect QTP Automation Effort

• Object Identification Robustness: How easily QTP can identify the calculator’s buttons and display. Poorly designed applications can dramatically increase effort.
• Framework Overhead: If you are using a Data-Driven or Keyword-Driven framework, there is an initial setup cost, but it pays off for larger projects.
• Test Data Management: Even for a calculator, managing the input numbers and expected results for dozens of tests requires a structured approach.
• Reporting Requirements: Custom reporting beyond QTP’s default results adds to the development time.
• Application Stability: Automating an application that is constantly changing will lead to high script maintenance effort.
• Environment Setup: Ensuring QTP, the necessary add-ins, and the calculator application are all configured correctly takes time.

Frequently Asked Questions (FAQ)

1. What language does QTP use for programming?

QTP (now UFT) uses VBScript, a scripting language from Microsoft, to write automation scripts.

2. Is this calculator 100% accurate?

No, this is an estimation tool. It provides a reasonable baseline but cannot account for all project-specific variables and complexities. It’s meant for planning purposes.

3. Why does engineer experience matter so much?

An experienced engineer writes more efficient code, debugs faster, and is better at handling unexpected errors and object recognition challenges, significantly reducing the total time.

4. What is a “UI Control” in this context?

It refers to any element of the calculator’s graphical user interface that the script needs to interact with, such as the ‘7’ button, the ‘+’ button, or the results display field.

5. Can I use QTP to test a web-based calculator?

Yes, QTP supports web applications. You would need to ensure the Web add-in is active during the test recording and execution.

6. What is the difference between QTP and UFT?

UFT (Unified Functional Testing) is the modern evolution of QTP. It combines QTP’s capabilities for GUI testing with tools for API testing into a single platform.

7. Does the cost calculation include software licensing?

No, the cost shown is purely an estimate of the man-hours involved. It does not include the licensing cost for UFT or other tools.

8. What is a “test case”?

A test case is a specific sequence of actions and inputs to verify a particular behavior. For a calculator, a test case could be “Enter 5, Press +, Enter 3, Press =, Verify Result is 8.”