dotnet/maui

[iOS] Improve the CollectionView FindEstimatedSizeUsingWidth to handle grouping and testing

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#20,654 opened on Feb 16, 2024

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area-controls-collectionviewgood first issueplatform/iost/bugt/enhancement ☀️testing-missing-tests

Description

Description

When implementing FindEstimatedSizeUsingWidth to fix a issue with the EstimatedSize I didn't took in account the grouping as this didn't seem to reproduce at the time, but we should address if this needed by adding more tests like to scroll to the last item.

Steps to implement

  • Handle a way to find the better estimated size if we are using groups.
  • Right UItests that go to the end of a bigger list with scroll

Contributor guide

Tech stack
csharp
Domain
mobiletesting
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
iOS CollectionViewGroupingUI testing
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35
Research direction
Examine the current implementation of FindEstimatedSizeUsingWidth in the linked PR #20022. Investigate how to adjust the estimated size calculation when grouping is enabled. Then, write UI tests that scroll to the last item in a grouped collection to ensure correctness.