Software Testing - Exercises

A software company is about to ship a product. The development manager states: 'We still have 47 known defects in the system, but they are all low-severity. We will fix them in a patch.' How does the number of known defects remaining in a program at delivery affect product support costs and operations?

Testing is meant to show that a program does what it is intended to do. However, testers may not always know what a program is intended to do. Which of the following are reasons why this knowledge gap can occur? Select all that apply.

Some argue developers should test their own code rather than handing it to a separate testing team. Which of the following are valid arguments in favor of developers testing their own code? Select all that apply.

What is the strongest argument against developers being solely responsible for testing their own code?

A method called catWhiteSpace is part of a 'Paragraph' object. Within a paragraph, it replaces sequences of blank characters with a single blank character. For example, 'Hello   World' becomes 'Hello World'. Which of the following correctly identifies the input partitions for testing this method? Select all that apply.

Complete the explanation of how automated testing frameworks simplify regression testing: "Regression testing involves re-running 1($) tests after changes have been made. Automated frameworks like JUnit allow all tests to be encoded in a 2($) that can be run every time a change is made. This makes regression testing 3($) and reduces the risk of missing important tests."

A hospital acquires a patient records system by adapting an existing off-the-shelf information system. How does testing an adapted off-the-shelf system differ from testing software developed from scratch using an object-oriented language?

You need to design a scenario for testing a wilderness weather station system. The system collects meteorological data, summarizes it, and reports to a remote mapping system. Which of the following would be characteristics of a well-designed test scenario for this system? Select all that apply.

The Mentcare system is a mental health patient records system. Suggest how you might stress test the Mentcare system. Which of the following would constitute an appropriate stress testing approach for this system?

Involving users at an early stage in release testing has several benefits. Which of the following are genuine benefits of early user involvement in release testing? Select all that apply.

A system testing approach tests the most important functionalities first, followed by less important ones, until the testing budget is exhausted - leaving some functionality untested. A debate arises: who decides what is 'more important'? Which of the following ethical issues does this approach raise? Select all that apply.