White-Box and Black-Box Testing

The video tutorial explains the differences between black-box and white-box testing using examples. It starts with a black-box testing scenario where the specification is known but not the implementation. The example involves testing a function that prints integer values. The tutorial then highlights a code discrepancy where a typo in the implementation could be missed by black-box testing but identified through white-box testing. The importance of examining the code to uncover hidden issues is emphasized.

What are the two types of testing discussed in the video?

• Unit testing and Integration testing

• Black-box testing and White-box testing

• Functional testing and Non-functional testing

• Manual testing and Automated testing

In black-box testing, what do testers primarily work with?

• The database

• The source code

• The user interface

• The specification

What kind of inputs would you select for black-box testing of a function that prints an integer?

• Only positive integers

• Only negative integers

• Positive, negative integers, and zero

• Only zero

What is the function name used in the example provided in the video?

• printNumber

• printNumBytes

• printValue

• printInt

What mistake did the developer make in the code?

• Used 102 instead of 1024

• Used 124 instead of 1024

• Used 1000 instead of 1024

• Used 2048 instead of 1024

Why might black-box testing miss the problem in the code?

• Because it only tests the user interface

• Because it does not consider the code implementation

• Because it only tests the database

• Because it only tests the performance

What additional step does white-box testing involve that helps identify the problem?

• Reviewing the user interface

• Reviewing the database

• Reviewing the code

• Reviewing the performance

What specific test case would white-box testing add to identify the problem?

• A test case with a parameter equal to zero

• A test case with a parameter less than 1024

• A test case with a parameter equal to 1024

• A test case with a parameter greater than 1024

What is the main advantage of white-box testing over black-box testing as illustrated in the video?

• It requires less knowledge of the specification

• It is faster

• It is easier

• It can identify issues in the code implementation