ISTQB FOUNDATION 4.0 | Tutorial 30-1 | Equivalence Partition | Test Case Design Techniques | CTFL

Summary

This tutorial delves into the ISTQB Foundation Level certification, focusing on Chapter 4: Test Analysis and Design. It particularly explores blackbox test techniques, specifically the concept of equivalence partitioning with multiple inputs. The instructor uses examples of an apartment search form and a flight booking application to illustrate how to minimize test cases while ensuring every condition is covered at least once. The goal is to achieve 100% equivalence partition coverage with the least number of test cases, a critical skill for software testers.

Takeaways

• 📚 The tutorial is focused on ISTQB Foundation Level certification, specifically covering Chapter 4 on Test Analysis and Design.
• 🔍 The segment 4.2 discusses blackbox test techniques, with an emphasis on equivalence partitioning (EP) as a method to minimize test cases while ensuring all conditions are tested at least once.
• 📝 The tutorial begins by explaining how to handle multiple inputs in a test scenario, using example questions to illustrate the process.
• 🏠 An example of a simplified apartment search form is used to demonstrate how to apply EP with multiple input types such as floor options and garden types.
• 🌿 The example clarifies that only ground floor apartments can have gardens, and this constraint is used to reduce the number of test cases by eliminating invalid combinations.
• 🛫 A second example involves a flight booking application with three constraints: staff eligibility, weekday booking, and specific time windows for booking.
• ⏰ The flight booking example highlights the importance of considering time partitions carefully, especially when dealing with edge cases like midnight.
• 📉 The tutorial emphasizes the goal of minimizing test cases while ensuring complete coverage of all valid and invalid input combinations.
• 📝 The script provides a step-by-step approach to creating test cases for both examples, showing how to combine inputs to achieve 100% EP coverage.
• 📉 The minimum number of test cases required for 100% EP coverage is identified for each example, demonstrating the effectiveness of the method.
• 💡 The tutorial concludes by encouraging learners to ask questions and continue exploring the subject, emphasizing the importance of ongoing learning and understanding.

Q & A

What is the main topic of this tutorial?

The main topic of this tutorial is test analysis and design, specifically focusing on blackbox test techniques and equivalence partitioning with multiple inputs.

What is the goal of using equivalence partitioning in testing?

The goal of using equivalence partitioning in testing is to minimize the number of test cases while ensuring that every condition is tested at least once.

What is the significance of the example of the apartment search form in the tutorial?

The apartment search form example illustrates how to apply equivalence partitioning to a scenario with multiple inputs (floor and garden type) and constraints to determine the minimum number of test cases needed for full coverage.

How many search criteria does the apartment search form in the example have?

The apartment search form has two search criteria: floor and garden type.

What are the constraints given for the garden type in the apartment search form example?

The constraint is that only apartments on the ground floor can have a garden, and there is a built-in validation mechanism that prevents selecting a garden type for first floor or higher floors.

What is the minimum number of test cases required to cover 100% equivalence partition coverage for the apartment search form example?

The minimum number of test cases required is four, as shown by the provided test cases in the tutorial.

What is the scenario in the second example about?

The second example scenario is about testing a flight booking application with constraints related to who can book (staff of the airline only), when the booking can be made (only on weekdays and between 9:00 a.m. to 5:00 p.m.), and considering the date change at midnight.

How many constraints are there for booking a flight in the flight booking application example?

There are three constraints for booking a flight: the person must be a staff member of the airline, the booking must be on a weekday, and it must be between 9:00 a.m. and 5:00 p.m.

What is the minimum number of test cases needed to achieve 100% equivalence partition coverage for the flight booking application example?

The minimum number of test cases needed is four, covering valid and invalid scenarios for each constraint.

What is the importance of considering the date change at midnight when creating test cases for the flight booking application?

Considering the date change at midnight is important because it affects the validity of the booking; for example, a booking attempted late on a weekday could change the date to the weekend, which is an invalid input scenario.

How does the tutorial suggest combining multiple inputs to form test cases?

The tutorial suggests combining multiple inputs by creating test cases that cover each input value at least once, ensuring full coverage with the minimum number of test cases.