ArithmeticException 방어 처리

[unam98]

📌 개요

✨ 작업 내용

✨ PR 포인트

📸 스크린샷/동영상

Summary by CodeRabbit

• Bug Fixes

  • Prevented crashes when the banner list is empty in Discover.
  • Ensured the banner carousel behaves correctly with no items and retains infinite scrolling when banners exist.
  • Improved overall stability of banner display.

• Chores

  • Cleaned up unused code for better maintainability.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

The adapter’s item count logic now returns 0 when the banner list is empty and Int.MAX_VALUE otherwise. Unused imports were removed. No other logic or public APIs were changed.

Changes

Cohort / File(s)	Summary
Discover Banner Adapter app/src/main/java/com/runnect/runnect/presentation/discover/adapter/BannerAdapter.kt	Removed unused imports. Updated getItemCount() to return 0 when banners is empty; otherwise Int.MAX_VALUE. Prevents empty-list binding/modulo issues while keeping infinite scroll for non-empty banners.

Sequence Diagram(s)

sequenceDiagram
    participant RV as RecyclerView
    participant BA as BannerAdapter
    participant VH as BannerViewHolder

    RV->>BA: getItemCount()
    alt banners empty
        BA-->>RV: 0
        note right of RV: No onBindViewHolder calls
    else banners non-empty
        BA-->>RV: Int.MAX_VALUE
        loop Binding cycle
            RV->>BA: onBindViewHolder(position)
            BA->>VH: bind(banners[position % size])
        end
    end

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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

I hop through code where banners spin,
An empty field? I won’t jump in—
Zero carrots, zero scroll,
But when they sprout, I roll and roll!
Infinite laps on silky grass,
Guard in place, no tripping pass.

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📥 Commits

Reviewing files that changed from the base of the PR and between aa9cac5 and cfa3581.

📒 Files selected for processing (1)

• app/src/main/java/com/runnect/runnect/presentation/discover/adapter/BannerAdapter.kt (1 hunks)

✨ Finishing Touches

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🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feature/arithmetic-exception-handling

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