Remove Snapshooter and ChilliCream.Testing.Utilities

[glen-84]

Summary

• Drops the last Snapshooter.Xunit and ChilliCream.Testing.Utilities users from the repo (StrawberryShake CodeGeneration tests) in favor of CookieCrumble, which already powers ~99% of the snapshot suite.
• Reworks GeneratorTestHelper to use [CallerFilePath] and a small inline file-snapshot helper, replacing the Snapshooter-specific SnapshotFullName + custom-path MatchSnapshot mechanic that has no direct CookieCrumble equivalent.
• Removes both PackageVersion entries from Directory.Packages.props and the corresponding PackageReferences from CodeGeneration/test/Directory.Build.props; wires up CookieCrumble.Xunit + CookieCrumble.Analyzers via ProjectReference matching the convention used by HotChocolate/Core/test and StrawberryShake/Client/test.

Test plan

• dotnet build src/StrawberryShake/CodeGeneration/StrawberryShake.CodeGeneration.slnx
• dotnet test src/StrawberryShake/CodeGeneration/test/CodeGeneration.Tests — 29 passed, 1 skipped
• dotnet test src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests — 188 passed, 1 skipped
• dotnet test src/StrawberryShake/CodeGeneration/test/CodeGeneration.Razor.Tests — 1 passed

[Copilot]

Pull request overview

This PR removes the remaining usages of Snapshooter.Xunit and ChilliCream.Testing.Utilities from StrawberryShake CodeGeneration tests by standardizing on CookieCrumble (already used broadly in the repo), and updates test infrastructure accordingly.

Changes:

• Replaces Snapshooter/ChilliCream testing utilities with CookieCrumble across CodeGeneration test projects (global usings + references, updated imports).
• Reworks GeneratorTestHelper integration snapshot path logic to rely on [CallerFilePath] and a custom “match snapshot at path” helper.
• Removes Snapshooter.Xunit / ChilliCream.Testing.Utilities package versions from central package management and cleans up a snapshot file encoding artifact (BOM).

Reviewed changes

Copilot reviewed 26 out of 26 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/StrawberryShake/CodeGeneration/test/Directory.Build.props	Switches test dependencies to CookieCrumble project refs and adds a compile exclude for __mismatch__ artifacts.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.Tests/Utilities/SchemaHelperTests.cs	Removes ChilliCream.Testing import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.Tests/Utilities/QueryDocumentRewriterTests.cs	Removes Snapshooter.Xunit import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.Tests/Utilities/OperationDocumentHelperTests.cs	Switches FileResource static import from ChilliCream to CookieCrumble.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.Tests/Mappers/TestDataHelper.cs	Switches FileResource static import from ChilliCream to CookieCrumble.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.Razor.Tests/GeneratorTestHelper.cs	Removes Snapshooter usage and adds a custom path-based snapshot matcher using [CallerFilePath].
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/StarWarsGeneratorTests.cs	Removes ChilliCream.Testing import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/SchemaGeneratorTests.cs	Removes ChilliCream.Testing import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/ScalarGeneratorTests.cs	Removes ChilliCream.Testing import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/OperationGeneratorTests.cs	Removes ChilliCream.Testing import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/NoStoreStarWarsGeneratorTests.cs	Removes ChilliCream.Testing import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/Integration/TestGeneration.cs	Removes ChilliCream.Testing import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/Integration/StarWarsUnionListTest.cs	Removes Snapshooter.Xunit import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/Integration/StarWarsTypeNameOnUnionsTest.cs	Removes Snapshooter.Xunit import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/Integration/StarWarsTypeNameOnInterfacesTest.cs	Removes Snapshooter.Xunit import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/Integration/StarWarsIntrospectionTest.cs	Removes Snapshooter.Xunit import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/Integration/EntityIdOrDataTest.cs	Removes Snapshooter.Xunit import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/Integration/AnyScalarDefaultSerializationTest.cs	Removes Snapshooter.Xunit import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/Integration/snapshots/StarWarsIntrospectionTest.Execute_StarWarsIntrospection_Test.snap	Removes BOM/normalizes snapshot file start/end formatting.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/InputGeneratorTests.cs	Removes ChilliCream.Testing import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/GeneratorTestHelper.cs	Removes Snapshooter usage and adds a custom path-based snapshot matcher using [CallerFilePath].
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/ErrorGeneratorTests.cs	Removes ChilliCream.Testing import.
src/StrawberryShake/CodeGeneration/test/CodeGeneration.CSharp.Tests/EntityGeneratorTests.cs	Removes ChilliCream.Testing import.
src/StrawberryShake/Client/test/Core.Tests/Integration/Mappers/DroidHeroMapper.cs	Switches from ChilliCream.Testing to CookieCrumble import (currently unused).
src/StrawberryShake/Client/test/Core.Tests/Integration/IntegrationTests.cs	Switches from ChilliCream.Testing to CookieCrumble import (for FileResource).
src/Directory.Packages.props	Removes central package versions for Snapshooter.Xunit and ChilliCream.Testing.Utilities.

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[Copilot]

Pull request overview

Copilot reviewed 26 out of 26 changed files in this pull request and generated 3 comments.