CSC error AD0001 IndexOutOfRangeException

[starosta33]

Description

I get exceptions both in Visual Studio and from CLI

CSC error AD0001: Analyzer 'FluentAssertions.Analyzers.FluentAssertionsAnalyzer' threw an exception of type 'System.IndexOutOfRangeException' with message 'Index was outside the bounds of the array.'.

System.IndexOutOfRangeException : Index was outside the bounds of the array.
   at FluentAssertions.Analyzers.NunitCodeFixProvider.MethodInvocationMatcher.TryGetNext(IOperation operation)
   at FluentAssertions.Analyzers.NunitCodeFixProvider.AssertThatMatcher.Matches(INamedTypeSymbol type,IOperationMatcher[] matchers)
   at FluentAssertions.Analyzers.NunitCodeFixProvider.AssertThatMatcher.Matches(INamedTypeSymbol type,IOperationMatcher[] matchers,MethodInvocationMatcher methodMatcher,IArgumentOperation& argument)
   at FluentAssertions.Analyzers.NunitCodeFixProvider.AssertThatMatcher.Is(String propertyMatcher,MethodInvocationMatcher methodMatcher,IArgumentOperation& argument)
   at FluentAssertions.Analyzers.NunitCodeFixProvider.TryComputeFixForNunitThat(IInvocationOperation invocation,CodeFixContext context,NunitCodeFixContext t)
   at FluentAssertions.Analyzers.NunitCodeFixProvider.TryComputeFixCore(IInvocationOperation invocation,CodeFixContext context,NunitCodeFixContext t,Diagnostic diagnostic)
   at FluentAssertions.Analyzers.TestingFrameworkCodeFixProvider`1.TryComputeFix(IInvocationOperation invocation,CodeFixContext context,TTestContext t,Diagnostic diagnostic)
   at async FluentAssertions.Analyzers.CodeFixProviderBase`1.RegisterCodeFixesAsync[TTestContext](<Unknown Parameters>)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at async Microsoft.CodeAnalysis.CodeFixes.CodeFixService.GetCodeFixesAsync(<Unknown Parameters>)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at async Microsoft.CodeAnalysis.Extensions.IExtensionManagerExtensions.PerformFunctionAsync[T](<Unknown Parameters>)

Complete minimal example reproducing the issue

Newtonsoft.Json.Linq.JObject actual = new ();
actual.ContainsKey("whatever").Should().BeTrue();

Expected behavior:

no exception thrown during analysis or autofix

Actual behavior:

crash in VS / failed build

Versions

• Which version of Fluent Assertions Analyzers are you using?
  0.34.1

• Which .NET runtime and version are you targeting? E.g. .NET framework 4.6.1 or .NET Core 2.0.
  .Net 4.6.1, .Net 6.0, .Net 8.0

Additional Information

The CLI issue goes away when upgrading the FluentAssertions from 6.12.2 to 7.0.0

[starosta33]

I was able to find the particular assertion for one of the reported issues:

it crashes on this simplification:

ContainsKey("whatever").Should().BeTrue()

where the asserted object is JObject

[starosta33]

And it crashes here

invocation.TargetMethod.ContainingType.TypeArguments is empty