Bump xunit.v3 from 3.2.2 to 4.0.0 (#561)

* Bump xunit.v3 from 3.2.2 to 4.0.0

---
updated-dependencies:
- dependency-name: xunit.v3
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

* Use MTP

* Specify paths to test projects in justfile

* Pre-enumerate theories in the unit tests

The custom tag helper discoverer re-wraps each discovered case in a
TagHelperTestCase that carries its data row, so a delay-enumerated theory
case arrives with no arguments and the test fails. The VSTest adapter
pre-enumerated theories for us; the MTP runner does not, so ask for it
explicitly.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: James Gunn <james@gunn.io>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

Author: 3 people

global.json

@@ -1,5 +1,8 @@
 {
   "sdk": {
     "version": "10.0.100"
+  },
+  "test": {
+    "runner": "Microsoft.Testing.Platform"
   }
 }

justfile

@@ -33,15 +33,15 @@ test *ARGS: (unit-tests ARGS) (integration-tests ARGS) (package-tests ARGS)
 
 # Run the unit tests
 unit-tests *ARGS:
-  @dotnet test tests/GovUk.Frontend.AspNetCore.Tests/ {{ARGS}}
+  @dotnet test --project tests/GovUk.Frontend.AspNetCore.Tests/GovUk.Frontend.AspNetCore.Tests.csproj {{ARGS}}
 
 # Run the integration tests
 integration-tests *ARGS:
-  @dotnet test tests/GovUk.Frontend.AspNetCore.IntegrationTests/ {{ARGS}}
+  @dotnet test --project tests/GovUk.Frontend.AspNetCore.IntegrationTests/GovUk.Frontend.AspNetCore.IntegrationTests.csproj {{ARGS}}
 
 # Run the package tests; these pack the library and build throwaway projects against it
 package-tests *ARGS:
-  @dotnet test tests/GovUk.Frontend.AspNetCore.PackageTests/ {{ARGS}}
+  @dotnet test --project tests/GovUk.Frontend.AspNetCore.PackageTests/GovUk.Frontend.AspNetCore.PackageTests.csproj {{ARGS}}
 
 # Format the C# code
 format *ARGS:

tests/GovUk.Frontend.AspNetCore.PackageTests/GovUk.Frontend.AspNetCore.PackageTests.csproj

@@ -20,7 +20,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="xunit.v3" Version="3.2.2" />
+    <PackageReference Include="xunit.v3" Version="4.0.0" />
   </ItemGroup>
 
   <!-- Deliberately no ProjectReference to the library: these tests must only ever see it through the

tests/GovUk.Frontend.AspNetCore.Tests/TagHelpers/TagHelperTestCase.cs

@@ -45,6 +45,8 @@ public override async ValueTask<IReadOnlyCollection<IXunitTestCase>> Discover(
     }
 }
 
+// Every discovered case is re-wrapped as a plain TagHelperTestCase, which carries its data row with it, so the
+// theories have to be pre-enumerated by the time we see them; xunit.runner.json turns that on for the assembly.
 public class TagHelperTheoryDiscoverer : TheoryDiscoverer
 {
     public override async ValueTask<IReadOnlyCollection<IXunitTestCase>> Discover(

tests/GovUk.Frontend.AspNetCore.Tests/xunit.runner.json

@@ -0,0 +1,4 @@
+{
+  "$schema": "https://xunit.net/schema/current/xunit.runner.schema.json",
+  "preEnumerateTheories": true
+}