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INF3705 Assignment 2 (COMPLETE ANSWERS) 2024 - DUE 6 September 2024
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INF3705Assignment 2
(COMPLETE
ANSWERS)
2024 - DUE 6
September 2024
, Question 1 [15 marks] Explain the difference between Development testing
and Test-driven development.
Development testing and Test-driven development (TDD) are both approaches to software
testing, but they differ in their timing, methodology, and primary objectives.
1. Development Testing:
Timing: Development testing typically occurs after the code has been written or
during the development process.
Methodology: It involves testing the software incrementally as it is being
developed. Developers write test cases to verify the correctness of individual units
or components of the software.
Objective: The primary goal of development testing is to identify and fix defects
in the code before it is released to a wider audience. It helps ensure that each
component of the software functions correctly in isolation.
2. Test-driven Development (TDD):
Timing: TDD, on the other hand, occurs before the code is written.
Methodology: In TDD, developers write test cases before they write the actual
code. These test cases define the desired behavior or functionality of the code.
The code is then written in small increments to pass these test cases.
Objective: The main objective of TDD is to drive the development process by
focusing on writing code to fulfill specific test cases. This iterative approach helps
ensure that the code meets the requirements and remains maintainable and
extensible.
In summary, development testing focuses on testing the software during or after development to
identify and fix defects, while TDD emphasizes writing test cases before writing the actual code
to drive the development process and ensure code quality from the outset.
Question 2 [09 marks] What are the strategic options for legacy system
evolution? When would you normally replace all or part of a system rather
than continue maintenance of the software?
Strategic options for legacy system evolution typically involve several approaches aimed at
modernizing or improving an existing system while considering factors such as cost, time, and
business needs. Some common strategic options include:
1. Reengineering or Refactoring:
This involves restructuring or rewriting the existing codebase to improve its
maintainability, scalability, or performance without changing its external
behavior.
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