easyDebugging & Testing
Inclusive Age Band Repair
Fix an off-by-one age-band filter.
Practice challengeCodeArena challenge library
12 challenges match your filters.
easyDebugging & Testing
Score Threshold Repair
Retain scores at both inclusive threshold boundaries.
Practice challengemediumDebugging & Testing
Date Window Boundary Repair
Correct inclusive date-window selection.
Practice challengehardDebugging & Testing
Inventory Limit Repair
Preserve values exactly at stock-policy limits.
Practice challengeeasyDebugging & Testing
Content Review State Machine
Replay content-review transitions and stop on an illegal move.
Practice challengeeasyDebugging & Testing
Application State Machine
Validate an application lifecycle transition sequence.
Practice challengemediumDebugging & Testing
Order State Machine
Replay order states with strict transition rules.
Practice challengehardDebugging & Testing
Incident State Machine
Validate incident response state changes.
Practice challengeeasyDebugging & Testing
Authorization Test Gap
List authorization branches missing from the test plan.
Practice challengeeasyDebugging & Testing
Payment Test Gap
Find uncovered payment decision branches.
Practice challengemediumDebugging & Testing
Mobile Navigation Test Gap
Identify mobile-navigation branches lacking coverage.
Practice challengehardDebugging & Testing
Runner Security Test Gap
List untested code-runner security outcomes.
Practice challenge