Add test coverage for Merchants Deposit page

[Copilot]

Missing test coverage for the Merchants Deposit page (/merchants/{MerchantId:guid}/deposit).

Changes

Created MerchantsDepositPageTests.cs with 8 tests covering:

• Page rendering: Title, merchant name display, form field presence
• Form submission: Success path with navigation to /merchants, failure path with error message
• Button interactions: Cancel button navigation, deposit button with form validation
• Error handling: Navigation to error page on merchant load failure

Implementation

Followed Estate Index Page test patterns:

// Find buttons by text content
var buttons = cut.FindAll("button");
var makeDepositButton = buttons.FirstOrDefault(b => 
    b.TextContent.Contains("Make Deposit") && 
    (b.GetAttribute("id") ?? "") == "makeDepositButton");

// Verify navigation
_fakeNavigationManager.Uri.ShouldContain("/merchants");

// Use SetDelayOverride for faster execution
cut.Instance.SetDelayOverride(0);

Uses Bunit, Moq, Shouldly, and BaseTest infrastructure consistent with existing test suite.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• f.feedz.io
  • Triggering command: /usr/bin/dotnet dotnet test EstateManagementUI.BlazorServer.Tests/EstateManagementUI.BlazorServer.Tests.csproj --filter FullyQualifiedName~MerchantsDepositPageTests --logger console;verbosity=detailed (dns block)
  • Triggering command: /opt/hostedtoolcache/CodeQL/2.24.0/x64/codeql/csharp/tools/linux64/Semmle.Autobuild.CSharp /opt/hostedtoolcache/CodeQL/2.24.0/x64/codeql/csharp/tools/linux64/Semmle.Autobuild.CSharp (dns block)
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/EstateManagementUI/EstateManagementUI/EstateManagementUI.sln --packages /home/REDACTED/work/EstateManagementUI/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/EstateManagementUI/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/EstateManagementUI/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:AllowMissingPrunePackageData=true (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

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This section details on the original issue you should resolve

<issue_title>Improve Code Coverage on Merchants Deposit Page</issue_title>
<issue_description>Use the estate index page tests as a guide on how to find buttons and also verify navigation</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Improve Code Coverage on Merchants Deposit Page #720

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