How Modified Condition Decision Coverage Ensures Correctness in Complex Code?
How Modified Condition Decision Coverage Ensures Correctness in Complex Code?
Modified Condition Decision Coverage is an advanced code coverage metric that verifies whether complex decision logic behaves correctly by proving that each individual condition within a decision can independently affect the overall outcome. Instead of merely confirming that branches or conditions are executed, MC/DC requires test cases to demonstrate a clear cause-and-effect relationship between a single condition and the final decision result, while all other conditions remain unchanged.
This approach is especially valuable in systems where subtle logical errors can lead to serious failures. By enforcing precise test design, Modified Condition Decision Coverage exposes hidden defects in boolean expressions that simpler coverage techniques often miss. As a result, it has become a trusted standard in safety-critical and compliance-driven environments, helping teams achieve higher confidence in their software’s correctness without relying on excessive or redundant test cases.
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