Testing

• What is the main purpose of testing a program?

  To ensure the program works correctly
• Why is it important to test a program?

  To meet user requirements and remove errors
• What is iterative testing?

  Testing during program development
• What occurs during iterative testing?

  The programmer tests and modifies the module
• What is final testing also known as?

  Terminal testing
• When does final testing take place?

  After development and before release
• What is a syntax error?

  A mistake in grammatical rules
• What happens when a syntax error occurs?

  The program cannot be compiled or executed
• Give an example of a syntax error.

  Incorrect spelling: pront("hello")
• What is a logical error?

  A mistake that produces incorrect output
• How does a logical error affect a program?

  The program runs but gives wrong results
• Give an example of a logical error.

  Incorrect calculation: total = num1 - num2
• What is test data used for?

  To test if a program functions correctly
• What should test data cover?

  A range of possible and incorrect inputs
• What are the four types of test data?

  • Normal data: Sensible data the program accepts
  • Boundary data: Data at extreme boundaries
  • Invalid data: Correct type but fails validation
  • Erroneous data: Wrong type that cannot be processed
• What is normal data?

  Sensible data the program should accept
• What is boundary data?

  Data at the extreme boundary of ranges
• What is invalid data?

  Correct type but does not meet validation
• What is erroneous data?

  Data of the wrong data type
• Why should erroneous data not be accepted?

  It cannot be processed by the program
• What is the purpose of defensive design theory?

  To anticipate and mitigate potential errors
• What is Boolean logic used for in programming?

  To create true/false conditions