Problem 1
Explain why testing can only detect the presence of errors, not their absence.
Problem 2
Compare top-down and bottom-up integration and testing by discussing their advantages and disadvantages for architectural testing, demonstrating a version of the system to users and for the practical implementation and observation of tests. Explain why most large system integration, in practice, has to use a mixture of top-down and bottom-up approaches.
Problem 3
What is regression testing? Explain how the use of automated tests and a testing framework such as JUnit simplifies regression testing.
Problem 7
Explain why interface testing is necessary even when individual components have been extensively validated through component testing and program inspections.
Problem 9
You have been asked to test a method called catWhiteSpace in a Paragraph object that, within the paragraph, replaces sequences of blank characters with a single blank character. Identify testing partitions for this example and derive a set of tests for the catWhiteSpace method.
Problem 10
Give three situations where the testing of all independent paths through a program may not detect program errors.
