Software Testing Principles and Concepts

The video tutorial discusses various testing principles, emphasizing the impracticality of exhaustive testing and the importance of risk assessment. It highlights defect clustering, the pesticide paradox, and the limitations of testing in proving software correctness. The tutorial also covers the fallacy of error absence, the significance of early testing, and the context-dependent nature of testing. Real-world examples, such as the Windows 98 launch, illustrate these concepts.

What is one of the conditions you can test when moving a file from Folder A to Folder B?

• When Folder B is empty

• When the file is open

• When the file is not present in Folder A

• When Folder A is empty

Why is exhaustive testing not feasible?

• It is too complex

• It is unnecessary

• It is too expensive and time-consuming

• It is too simple

What is the principle that states a small number of modules contain most of the defects?

• Exhaustive Testing

• Defect Clustering

• Early Testing

• Pesticide Paradox

What is the likely outcome of repeating the same tests over and over again?

• Finding new bugs

• No longer finding new bugs

• Increasing the number of bugs

• Decreasing the number of bugs

What principle suggests that test cases need to be regularly reviewed and revised?

• Context-Dependent Testing

• Early Testing

• Pesticide Paradox

• Defect Clustering

What does the principle 'testing shows the presence of defects' imply?

• Testing proves the software is defect-free

• Testing increases the number of defects

• Testing reduces the probability of undiscovered defects

• Testing is unnecessary

What is the fallacy of 'absence of error'?

• Finding and fixing defects ensures the system is usable

• Finding and fixing defects does not ensure the system is usable

• Absence of error means no further testing is needed

• Absence of error means the system is perfect

When should testing start according to the principle of Early Testing?

• After the software is fully developed

• During the deployment phase

• During the coding phase

• As early as possible in the software development lifecycle

What does the principle of Context-Dependent Testing state?

• All software should be tested the same way

• Testing should be done only once

• Testing methods vary based on the type of application

• Testing is not necessary for all applications

What is the main focus of the principle of Early Testing?

• To test only the user interface

• To test only the final product

• To capture defects in the requirements or design phase

• To start testing after the software is developed