Added test for RCS1196

[jakubreznak]

added test for RCS1196
resolve #1128

I tested it and there were no redundant parentheses. I also wrote test for it.

[josefpihrt]

I took a look at it and I turned out that the problem is with the refactoring which has the same functionality as the analyzer:

roslynator/src/Refactorings/CSharp/Refactorings/InvocationExpressionRefactoring.cs

Lines 55 to 64 in d52ec57

	context.RegisterRefactoring(
	CallExtensionMethodAsInstanceMethodRefactoring.Title,
	ct =>
	{
	return context.Document.ReplaceNodeAsync(
	analysis.InvocationExpression,
	analysis.NewInvocationExpression,
	ct);
	},
	RefactoringDescriptors.CallExtensionMethodAsInstanceMethod);

[josefpihrt]

@jakubreznak Could you fix it?

[jakubreznak]

Yeah, sorry, i will look at it, but I am not able to do it this week.

[jakubreznak]

I looked at it and fixed it, also added a test. Thank you for your suggestion.

[josefpihrt]

@jakubreznak Thanks for the contribution!