[Testing] Feature Matrix UITest Cases for CollectionView Header/Footer Feature

[LogishaSelvarajSF4525]

Description

This PR includes a comprehensive set of UI test cases for the CollectionView control. The tests validate the Header/Footer feature functionality in CollectionView, including properties such as: Header, Footer, HeaderTemplate, FooterTemplate EmptyView, IsGrouped, GroupHeaderTemplate, GroupFooterTemplate, ItemsLayout, ItemTemplate, ItemsSource.

New feature matrix for CollectionView:

• Added a new CollectionViewControlPage with a detailed layout and bindings for various CollectionView properties (ItemsSource, Header, Footer, etc.) (src/Controls/tests/TestCases.HostApp/FeatureMatrix/CollectionView/CollectionViewControlPage.xaml).
• Implemented the code-behind for CollectionViewControlPage, including a method to navigate to an options page (src/Controls/tests/TestCases.HostApp/FeatureMatrix/CollectionView/CollectionViewControlPage.xaml.cs).
• Added a new CollectionViewOptionsPage to allow users to configure CollectionView options such as header, footer, templates, and layout (src/Controls/tests/TestCases.HostApp/FeatureMatrix/CollectionView/CollectionViewOptionsPage.xaml).

Updates to existing files:

• Updated CorePageView to include a new gallery page for the CollectionView feature matrix (src/Controls/tests/TestCases.HostApp/CoreViews/CorePageView.cs).

Header/Footer-Related Issues Identified in CollectionView

• Header/Footer Template and View Synchronization Issue in .NET MAUI CollectionView (CV2): Header/Footer Template and View Synchronization Issue in .NET MAUI CollectionView (CV2) #28504
• [Testing] EmptyView(null ItemsSource) elements Not Accessible via Automation on Windows Platform: [Testing] EmptyView(null ItemsSource) elements Not Accessible via Automation on Windows Platform #28022
• [Windows] EmptyViewTemplate not displayed when ItemsSource is set to Null: [Windows] EmptyViewTemplate not displayed when ItemsSource is set to Null #28334
• GroupHeaderTemplate and GroupFooterTemplate Not Displaying in CollectionView(CV2): GroupHeaderTemplate and GroupFooterTemplate Not Displaying in CollectionView(CV2) #28509
• [Windows] NullReferenceException thrown When Toggling IsGrouped to True in ObservableCollection Binding: [Windows] NullReferenceException thrown When Toggling IsGrouped to True in ObservableCollection Binding #28824
• TargetInvocationException Occurs When Selecting Header/Footer After Changing ItemsLayout in CV2: TargetInvocationException Occurs When Selecting Header/Footer After Changing ItemsLayout in CV2 #28678
• [Windows] CollectionView ItemsLayout does not update while switch from LinearItemsLayout to GridItemsLayout: [Windows] CollectionView ItemsLayout does not update while switch from LinearItemsLayout to GridItemsLayout #27946
• CollectionView HeaderTemplate and FooterTemplate are not displayed when ItemsSource is initially set to null: CollectionView HeaderTemplate and FooterTemplate are not displayed when ItemsSource is initially set to null #28337
• [Android] CollectionView Header and Footer Do Not Align with Horizontal ItemsLayout When EmptyView is Displayed: [Android] CollectionView Header and Footer Do Not Align with Horizontal ItemsLayout When EmptyView is Displayed #28622
• Footer Not Displayed at the Bottom When EmptyView is Active in CV2: Footer Not Displayed at the Bottom When EmptyView is Active in CV2 #28604
• CollectionView Footer Becomes Scrollable When EmptyView is Active on Android: CollectionView Footer Becomes Scrollable When EmptyView is Active on Android #28101

[dotnet-policy-service]

Hey there @@LogishaSelvarajSF4525! Thank you so much for your PR! Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

[Copilot]

Copilot reviewed 6 out of 9 changed files in this pull request and generated no comments.

Files not reviewed (3)

• src/Controls/tests/TestCases.HostApp/FeatureMatrix/CollectionView/CollectionViewControlPage.xaml: Language not supported
• src/Controls/tests/TestCases.HostApp/FeatureMatrix/CollectionView/CollectionViewOptionsPage.xaml: Language not supported
• src/Controls/tests/TestCases.HostApp/FeatureMatrix/CollectionView/HeaderFooterMainPage.xaml: Language not supported

Comments suppressed due to low confidence (1)

src/Controls/tests/TestCases.HostApp/FeatureMatrix/CollectionView/ColllectionViewViewModel.cs:1

• The file name 'ColllectionViewViewModel.cs' appears to contain a typo with an extra 'l'. Consider renaming it to 'CollectionViewViewModel.cs' for consistency with the class name.

using System;

[PureWeen]

/azp run MAUI-UITests-public

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[rmarinho]

/azp run MAUI-public

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