01Current
NPQuest
Mission 1
Mission 1: Map debugging flow. Read the briefing, solve the practice quest, and bank the XP.
+40 XP
World 10 / Builder Zone
Testing and Debugging
Practice debugging real React Native issues: error reading, debug panels, validation test cases, component scenarios, counter bugs, stable list keys, error boundary concept and a final Debug Lab App. Clear lessons to unlock next zone. Boss Project waits at the end.
NP
World entranceDebug DungeonBiome: Cave
The dungeon trains precision: forms, validation, errors, and resilience when the app breaks.
Guide: Debug Ranger
Reward skill: Debug discipline
Objective: Clear lessons, solve quests, bank XP, and open the next part of the map.
Route progress0%
Debug Dungeon
Find weak spots in the interface and fix them through practice.
Route progress0%
Free quest
0 / 9 lessons
World 2Builder ZoneBoss Project
World route
What you will build
Find defects, test flows, and make the app reliable.
What you should know
World 9: State Management
Recommended previous world
World 9: State ManagementNext world
World 11: PublishingStatus
Free
World
World 2
Time
8 h 30 min
Map
4 zones / 9 lessons
Lessons
0 / 9 lessons
Sign in to save progress and XP.
Quest mapDebug Dungeon0/9
Validation Warden
02Locked
Quest
Mission 2
Mission 2: Read error state. Read the briefing, solve the practice quest, and bank the XP.
+45 XP
03Locked
Challenge
Mission 3
Mission 3: Debug state panel. Read the briefing, solve the practice quest, and bank the XP.
+55 XP
04Locked
Quest
Mission 4
Mission 4: Validation test cases. Read the briefing, solve the practice quest, and bank the XP.
+60 XP
05Locked
Quest
Mission 5
Mission 5: Component scenarios. Read the briefing, solve the practice quest, and bank the XP.
+60 XP
06Locked
Reward
Mission 6
Mission 6: Bug fix: counter не должен уходить ниже нуля. Read the briefing, solve the practice quest, and bank the XP.
+55 XP
07Locked
Quest
Mission 7
Mission 7: Bug fix: стабильный key в списке. Read the briefing, solve the practice quest, and bank the XP.
+50 XP
08Locked
Quest
Mission 8
Mission 8: Error boundary concept. Read the briefing, solve the practice quest, and bank the XP.
+55 XP
09Locked
Boss
Boss mission
Boss mission: Final project: Debug Lab App. Combine the zone patterns into one final result. Find weak spots in the interface and fix them through practice.
+100 XP
Mission 1
Mission 1: Map debugging flow. Read the briefing, solve the practice quest, and bank the XP.
Skill collectedDebug discipline
Final objectiveDebug Dungeon
Validation Warden
World goal: Find weak spots in the interface and fix them through practice.
Skill collected: Debug discipline
/course-assets/lessons/testing-debugging/debugging-flow-map.svg
Level 1
Debugging flow и error details
This module moves through a focused part of Testing and Debugging. Each lesson includes a practical task, validation rules and a hidden solution.
Zone 1
Zone 1: Debugging flow и error details. Clear the missions inside this zone to charge the path forward.
Level 1NEXT LEVEL+40 XP
Map debugging flow
Mission 1: Map debugging flow. Read the briefing, solve the practice quest, and bank the XP.
40 min
Level 2LOCKED+45 XP
Read error state
Mission 2: Read error state. Read the briefing, solve the practice quest, and bank the XP.
45 minComplete previous level
Level 3LOCKED+55 XP
Debug state panel
Mission 3: Debug state panel. Read the briefing, solve the practice quest, and bank the XP.
55 minComplete previous level
/course-assets/lessons/testing-debugging/validation-test-cases.svg
Level 2
Test cases и component scenarios
This module moves through a focused part of Testing and Debugging. Each lesson includes a practical task, validation rules and a hidden solution.
Zone 2
Zone 2: Test cases и component scenarios. Clear the missions inside this zone to charge the path forward.
Level 1LOCKED+60 XP
Validation test cases
Mission 4: Validation test cases. Read the briefing, solve the practice quest, and bank the XP.
1 hComplete previous level
Level 2LOCKED+60 XP
Component scenarios
Mission 5: Component scenarios. Read the briefing, solve the practice quest, and bank the XP.
1 hComplete previous level
/course-assets/lessons/testing-debugging/bug-fix-counter.svg
Level 3
Bug fixing patterns
This module moves through a focused part of Testing and Debugging. Each lesson includes a practical task, validation rules and a hidden solution.
Zone 3
Zone 3: Bug fixing patterns. Clear the missions inside this zone to charge the path forward.
Level 1LOCKED+55 XP
Bug fix: counter не должен уходить ниже нуля
Mission 6: Bug fix: counter не должен уходить ниже нуля. Read the briefing, solve the practice quest, and bank the XP.
55 minComplete previous level
Level 2LOCKED+50 XP
Bug fix: стабильный key в списке
Mission 7: Bug fix: стабильный key в списке. Read the briefing, solve the practice quest, and bank the XP.
50 minComplete previous level
Level 3LOCKED+55 XP
Error boundary concept
Mission 8: Error boundary concept. Read the briefing, solve the practice quest, and bank the XP.
55 minComplete previous level
Boss Level
Boss LevelBoss Project
Финальный Debug Lab App
This module moves through a focused part of Testing and Debugging. Each lesson includes a practical task, validation rules and a hidden solution.
Boss zone
Boss zone: Финальный Debug Lab App. This is where the world turns into a portfolio proof. Final boss project.
Level 1Boss LevelLOCKED+100 XP
Final project: Debug Lab App
Boss mission: Final project: Debug Lab App. Combine the zone patterns into one final result. Find weak spots in the interface and fix them through practice.
1 h 30 minFinal QuestComplete previous level
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XP PRACTICE
Reinforce what you learned
Need a break from lessons? Play a short code game or test your speed in the Arena.