[35/N] Add unit tests for AlgoList registry, algorithm index, and InfoModals

[karkir0003]

PR Stack

1. ⬅️ [1/N] Update CI to run frontend unit tests #91 (Add test infrastructure and Jest setup)
2. ⬅️ [2/N] Configure React Testing Library and Setup Tests #92 (Add unit tests for Header, Footer, and Blob components)
3. ⬅️ [3/N] Add unit tests for SideButton component #94 (Add unit tests for HomeScreen components (SideButton, SearchFilter))
4. ⬅️ [4/N] Add unit tests for SearchFilter component #95 (Add unit tests for AlgoScreen components (AlgoSection, Pseudocode, ModalSidebarSectionTab))
5. ⬅️ [6/N] Add unit tests for Blob mascot component #97 (Add unit tests for modals (BigOModal, InfoModals))
6. ⬅️ [5/N] Add unit tests for Header and Footer components #96 (Add unit tests for AlgorithmNotFound404 component)
7. ⬅️ [7/N] Add unit tests for AboutScreen screen #98 (Add unit tests for HomeScreen page)
8. ⬅️ [8/N] Add integration tests for HomeScreen screen #99 (Add unit tests for AboutScreen page)
9. ⬅️ [9/N] Add unit tests for AlgorithmNotFound404 component #100 (Add unit tests for AlgoScreen page)
10. ⬅️ [10/N] Add integration tests for AlgoScreen screen #101 (Add unit tests for App root component and routes)
11. ⬅️ [11/N] Add unit tests for ModalSidebarSectionTab component #102 (Add test coverage workflow for CI)
12. ⬅️ [12/N] Add unit tests for BigOModal component #103 (Add unit tests for CustomEvents animation utility)
13. ⬅️ [13/N] Add unit tests for Pseudocode component #104 (Add unit tests for UndoFunctions animation utility)
14. ⬅️ [14/N] Add unit and integration tests for AlgoSection component #105 (Add unit tests for AnimatedCircle animation primitive)
15. ⬅️ [15/N] Add unit and integration tests for root App component #106 (Add unit tests for AnimatedHighlightCircle)
16. ⬅️ [16/N] Add unit tests for animation events and undo functions #107 (Add unit tests for SingleAnimation)
17. ⬅️ [17/N] Add unit tests for AnimatedObject, AnimatedCircle, and AnimatedHighlightCircle #108 (Add unit tests for AnimatedObject base class)
18. ⬅️ [18/N] Add unit tests for AnimatedRectangle, AnimatedLabel, and AnimatedLine #109 (Add unit tests for AnimatedRectangle, AnimatedLabel, and AnimatedLine)
19. ⬅️ [19/N] Add unit tests for AnimatedLinkedListNode, AnimatedDoublyLinkedListNode, and AnimatedCircularlyLinkedListNode #110 (Add unit tests for AnimatedLinkedListNode, AnimatedDoublyLinkedListNode, and AnimatedCircularlyLinkedListNode)
20. ⬅️ [20/N] Add unit tests for AnimatedBTreeNode and AnimatedSkipListNode #111 (Add unit tests for AnimatedBTreeNode and AnimatedSkipListNode)
21. ⬅️ [21/N] Add unit tests for ObjectManager #112 (Add unit tests for ObjectManager)
22. ⬅️ [22/N] Add unit tests for AnimationMain #113 (Add unit tests for AnimationMain)
23. ⬅️ [23/N] Add unit tests for algo util helpers (PriorityQueue, SkipListHeads, GraphValues) #114 (Add unit tests for algo util helpers (PriorityQueue, SkipListHeads, GraphValues))
24. ⬅️ [24/N] Add unit tests for base Algorithm class and control bar helpers #115 (Add unit tests for base Algorithm class and control bar helpers)
25. ⬅️ [25/N] Add unit tests for ArrayList algorithm #116 (Add unit tests for ArrayList algorithm)
26. ⬅️ [26/N] Add unit tests for LinkedList, DoublyLinkedList, and CircularlyLinkedList algorithms #117 (Add unit tests for LinkedList, DoublyLinkedList, and CircularlyLinkedList algorithms)
27. ⬅️ [27/N] Add unit tests for Stack, Queue, and Deque algorithms (Array and LL variants) #118 (Add unit tests for Stack, Queue, and Deque algorithms (Array and LL variants))
28. ⬅️ [28/N] Add unit tests for BST, AVL, Heap, and SplayTree algorithms #119 (Add unit tests for BST, AVL, Heap, and SplayTree algorithms)
29. ⬅️ [29/N] Add unit tests for BTree, TreeMap, SkipList, and DisjointSet algorithms #120 (Add unit tests for BTree, TreeMap, SkipList, and DisjointSet algorithms)
30. ⬅️ [30/N] Add unit tests for Hash, OpenHash, ClosedHash, and NonLinearProbing algorithms #121 (Add unit tests for Hash, OpenHash, ClosedHash, and NonLinearProbing algorithms)
31. ⬅️ [31/N] Add unit tests for BruteForce, BoyerMoore, KMP, RabinKarp, and LCS pattern matching algorithms #122 (Add unit tests for BruteForce, BoyerMoore, KMP, RabinKarp, and LCS pattern matching algorithms)
32. ⬅️ [32/N] Add unit tests for BubbleSort, CocktailSort, SelectionSort, InsertionSort, MergeSort, Quicksort, Quickselect, and HeapSort algorithms #123 (Add unit tests for BubbleSort, CocktailSort, SelectionSort, InsertionSort, MergeSort, Quicksort, Quickselect, and HeapSort algorithms)
33. ⬅️ [33/N] Add unit tests for LSDRadix, RadixSort, BogoSort, DropSort, FredSort, MiracleSort, and SleepSort algorithms #124 (Add unit tests for LSDRadix, RadixSort, BogoSort, DropSort, FredSort, MiracleSort, and SleepSort algorithms)
34. ⬅️ [34/N] Add unit tests for Graph, BFS, DFS, Dijkstras, Prims, Kruskals, Floyd, CreateGraph, and LVA algorithms #125 (Add unit tests for Graph, BFS, DFS, Dijkstras, Prims, Kruskals, Floyd, CreateGraph, and LVA algorithms)
35. 👉 #CURRENT — Add unit tests for AlgoList registry, algorithm index, and InfoModals (this PR)

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Addresses #93

Context

Adds comprehensive unit test coverage for the master algorithm registry, algorithm re-exports, and example guidance modals across the application:

• src/AlgoList.js: The central registry mapping algorithm routes to metadata tuples ([displayName, ComponentClass, hasPseudocode, verboseDisplayName?, rainbowColor?]), list ordering, category headers, related search recommendations, and filter categorization.
• src/algo/index.js: The barrel file re-exporting all 48 visualizer classes used across the application.
• src/modals/InfoModals.js: The dictionary of educational tips and operational guidance modals displayed when users open the information drawer for each algorithm.

Changes Made

• Introduced src/__tests__/AlgoList.test.js:
  • Validates algoMap entries for all standard and April Fools algorithms.
  • Verifies entry tuple lengths, display names, component constructor types, and boolean flags.
  • Verifies algoList ordering, structure, and category section headers.
  • Verifies relatedSearches mapping keys and values resolve to known algorithm keys.
  • Verifies algoFilter category grouping and algorithm ID integrity.
• Introduced src/algo/__tests__/index.test.js:
  • Verifies all 48 visualizers are exported cleanly as valid constructor functions.
• Introduced src/modals/__tests__/InfoModals.test.js:
  • Asserts existence and validity of all 25 algorithm modal elements.
  • Renders each modal element with @testing-library/react and asserts key instructional text in the DOM.

Test Plan

• Ran npm test -- --watchAll=false (all 3 new test suites pass, 37 unit tests passing; 87 suites, 923 tests passing repository-wide).
• Ran npm run lint and npm run prettier (0 errors, 0 warnings).