Tutorial Pengujian Perangkat Lunak dengan contoh | Black Box Testing Part 1 (ECP & BVA)

Summary

In this video, Asri discusses the importance of black box testing in software development, explaining its practical application and methods such as equivalence class partitioning and boundary value analysis. The focus is on verifying that software behaves as expected by testing its output against the expected results. Asri outlines how software testers create test cases, including handling both normal and boundary conditions. The video provides a detailed approach to test design and execution, emphasizing the need for thorough testing to ensure reliable software performance.

Takeaways

• 😀 Black-box testing is essential for ensuring that software behaves as expected by the user, regardless of how the code is implemented.
• 😀 The key focus of black-box testing is evaluating the output of a program based on selected inputs and execution conditions.
• 😀 When the actual output matches the expected output, the test passes; otherwise, it fails, even with small differences.
• 😀 A good tester performs tests based on specific test cases and scenarios that evaluate different aspects of software behavior.
• 😀 Test design can involve methods like equivalence class partitioning and boundary value analysis to reduce the number of test cases while maintaining coverage.
• 😀 Equivalence class partitioning divides data into valid and invalid classes to optimize testing and prevent redundant test cases.
• 😀 Boundary value analysis focuses on testing the edge values at the boundaries of data ranges to catch errors that may occur at extremes.
• 😀 In equivalence class partitioning, testers focus on identifying patterns in input data, categorizing them into different classes based on expected behavior.
• 😀 Boundary value analysis uses formulas to select test data that specifically targets boundary conditions like the minimum and maximum values.
• 😀 The combination of equivalence class partitioning and boundary value analysis ensures comprehensive test coverage and helps detect potential software defects.

Q & A

What is Black Box Testing and why is it important in software development?

Black Box Testing is a method where the tester does not need to know the internal workings of the software. It focuses on validating whether the software behaves as expected based on its requirements. It is important for ensuring that the software meets the user's needs and functions correctly after deployment.

What is the role of the tester in Black Box Testing?

The tester's role is to observe how the software responds to various inputs and execution conditions. The tester provides input and compares the resulting output with the expected output to determine if the software is functioning correctly.

What are the two possible outcomes of Black Box Testing?

The two possible outcomes of Black Box Testing are 'Pass' or 'Fail.' 'Pass' occurs when the actual output matches the expected output, while 'Fail' happens when there is a discrepancy between the two.

What are Test Cases, and what do they typically include?

Test Cases are structured scenarios designed to validate specific software functionality. They usually include items to test, input values, and expected outputs. Test cases may also identify boundaries or conditions for the software to handle.

What is the significance of the Equivalence Partitioning method in Black Box Testing?

Equivalence Partitioning involves dividing input data into groups that are expected to be treated similarly by the software. This reduces the number of test cases needed by selecting representative values from each group to test the software's behavior.

How does Boundary Value Analysis (BVA) enhance Black Box Testing?

Boundary Value Analysis focuses on testing the edge values of input ranges. By examining values at the limits and just beyond them, BVA helps identify potential issues that might arise at the boundaries of input ranges, improving test coverage.

What is the difference between Equivalence Partitioning and Boundary Value Analysis?

Equivalence Partitioning divides input data into equivalence classes, each expected to produce the same result. Boundary Value Analysis, on the other hand, focuses specifically on the edges of input ranges and checks if the software handles these boundaries correctly.

Can you provide an example of how Equivalence Partitioning works?

For example, if the software accepts ages between 18 and 65, the input data can be divided into equivalence classes like: below 18 (invalid), 18-65 (valid), and above 65 (invalid). Test cases would be created from each class to check software behavior.

Why is it important to test edge cases in software?

Testing edge cases is crucial because these are the points where the software is most likely to experience failures or unexpected behavior, especially when handling boundary values or ranges of input data.

How does Boundary Value Analysis handle extreme cases in testing?

Boundary Value Analysis tests not only the boundary values (e.g., minimum and maximum) but also the values immediately outside these boundaries. This ensures that the software behaves correctly even in unusual or extreme conditions.