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Test Types (Functional / Non-Functional / Regression)

Functional and Non-Functional Parameters

The success of software depends on both its functional accuracy and its structural robustness (performance, security, etc.).

Functional Testing and Techniques

Functional testing verifies if the system performs correctly according to requirements. Black Box techniques, which do not require knowledge of the internal code structure, are typically used:

  • Equivalence Partitioning: Dividing inputs into logical groups.
  • Decision Table: Testing combinations of inputs.
  • State Transition: Examining changes in states.
  • All-pairs Testing: Covering input pairs.
  • Regression Testing: Verifies that a change has not broken existing functionality. It can focus on only the changed unit (URT) or the entire product (FRT).

Non-Functional Testing

Tests conducted to increase the efficiency and reliability of the software:

  • Performance Testing: Measures the 3S (Speed, Scalability, Stability). It includes Load Testing (measuring daily use) and Stress Testing (pushing limits).
  • Security Testing: Identifies system vulnerabilities through scans, penetration tests, and risk assessments.
  • Accessibility Testing: Measures the usability of the system for individuals with disabilities using assistive technologies like screen readers.