Discover the correct strategic approach towards software testing, emphasizing the sequence of sub-modules, modules, and system projects to ensure comprehensive test coverage and quality assurance.
Table of Contents
Question
Which of the following option is the strategic approach towards testing?
A. Sub-modules – Modules – System project
B. System project – Modules – Sub-modules
C. Modules – Sub-modules – System project
D. None of these
Answer
A. Sub-modules – Modules – System project
Explanation
The strategic approach to software testing involves a structured and hierarchical process that ensures thorough evaluation of software components at different levels. The correct answer, “Sub-modules – Modules – System project,” reflects this logical progression.
A strategic approach to software testing is designed to systematically uncover defects and validate the software against requirements. It begins with testing smaller, more manageable components (sub-modules), progresses to larger integrated units (modules), and culminates in testing the entire system (system project). This sequence aligns with best practices in software testing strategies for the following reasons:
Component-Level Testing (Sub-modules)
- Testing starts at the smallest unit level, such as functions or classes, ensuring that each sub-module works as intended.
- This phase often involves unit testing, which isolates individual components to detect errors early.
Integration Testing (Modules)
- Once sub-modules are verified, they are integrated into modules.
- Integration testing ensures that these combined units work together seamlessly and identifies interface defects.
System Testing (System Project)
- The final step involves testing the entire system as a whole.
- This phase validates that the complete software meets specified requirements and performs effectively in its intended environment.
Why Other Options Are Incorrect
B. System project – Modules – Sub-modules: This reverse order is impractical because starting with system-level testing without verifying smaller components can lead to inefficiencies and missed defects in foundational elements.
C. Modules – Sub-modules – System project: Testing modules before sub-modules skips essential unit tests, increasing the risk of propagating undetected errors into higher levels.
D. None of these: This is incorrect because option A represents a well-established strategic approach in software testing.
Supporting Principles
A strategic approach incorporates:
- Formal Technical Reviews (FTRs): To identify defects early.
- Progressive Testing Levels: Starting from individual components and moving up to integrated systems.
- Validation and Verification: Ensuring the software meets both functional and non-functional requirements at every stage.
This structured methodology ensures cost-effectiveness, reduces defect propagation, and improves overall software quality.
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