Testes de Software: Teste Caixa-Branca e Teste Caixa-Preta - Teste Estrutural e Teste Funcional

Summary

In this video, the presenter explains the concepts of white-box and black-box software testing. White-box testing, also known as structural testing, focuses on evaluating the internal workings of software, involving the code itself to identify errors. Tools like Unity for Java are used for this purpose. On the other hand, black-box testing, also called functional testing, treats the software as a 'black box,' where only the inputs and outputs are considered without analyzing the internal structure. The video compares the two testing approaches, emphasizing their differences in terms of code access and focus on functionality versus internal structure.

Takeaways

• 😀 Software testing is a process of executing a product to determine if it meets specifications and works correctly within the environment it was designed for.
• 😀 The main goal of software testing is to identify failures in a product, so the causes can be corrected before the final delivery to production.
• 😀 White-box testing, also known as structural testing, focuses on evaluating the internal behavior of a software component by analyzing its source code.
• 😀 In white-box testing, testers have access to the source code and can write code to link libraries and components.
• 😀 An example of white-box testing is the use of the open-source tool, JUnit, for creating automated test cases for Java applications.
• 😀 Black-box testing, or functional testing, treats the software component as a 'black box,' where the internal structure is not considered, and only inputs and outputs matter.
• 😀 In black-box testing, inputs are provided, tests are executed, and the result is compared to a known expected outcome.
• 😀 A black-box test is successful if the actual result matches the expected result, without considering the software's internal workings.
• 😀 A component tested through black-box testing can be a method, function, program, or any software feature.
• 😀 The key difference between white-box and black-box testing is that white-box testing examines the internal structure of the software, while black-box testing is based on external requirements and predefined outputs.

Q & A

What is the primary goal of software testing?

The primary goal of software testing is to ensure that the product meets its specifications and functions correctly within the designated environment, while also identifying and fixing flaws before the final release.

What does white-box testing focus on?

White-box testing, also known as structural testing, focuses on evaluating the internal behavior and structure of the software. Testers have access to the source code and can test conditions, data flows, cycles, and logic paths.

What kind of access does a tester have in white-box testing?

In white-box testing, the tester has access to the source code of the software, allowing them to evaluate its internal structure and behavior.

Can you give an example of a tool used in white-box testing?

An example of a tool used in white-box testing is JUnit, an open-source framework for testing Java code.

How is black-box testing different from white-box testing?

Black-box testing focuses on testing the software's functionality without considering its internal structure or code. In contrast, white-box testing evaluates the internal workings of the software, requiring access to the source code.

What is the main focus of black-box testing?

The main focus of black-box testing is on the software's external behavior. It involves providing input and comparing the output to the expected result, without considering the internal workings of the software.

What is required for successful black-box testing?

For successful black-box testing, the input data is provided to the software, and the test is executed. The test is successful if the actual output matches the expected result that was predefined.

How are white-box and black-box testing related to each other?

White-box and black-box testing are complementary approaches to software testing. While white-box testing examines the internal structure and logic of the software, black-box testing focuses on validating its functionality through input and output tests.

What type of software components can be tested using white-box and black-box testing?

Both white-box and black-box testing can be used to test various software components, such as individual methods, functions, programs, sets of programs, or overall software functionality. White-box testing focuses on internal components, while black-box testing evaluates external behavior.

What is one key difference between white-box and black-box testing?

A key difference between white-box and black-box testing is that white-box testing requires knowledge of the internal code and structure of the software, while black-box testing does not involve any understanding of the internal workings and only focuses on inputs and expected outputs.