// ReSharper disable once ParameterOnlyUsedForPreconditionCheck.Local
private static void VerifyMethodSpecification <TReturn>(string methodName
, BindingFlags bindingAttr, params Action <ParameterInfo>[] havingArgs)
{
var actualMethod = SubjectType.GetMethod(methodName, bindingAttr);
Assert.NotNull(actualMethod);
Assert.Equal(typeof(TReturn), actualMethod.ReturnType);
var args = actualMethod.GetParameters();
Assert.Collection(args, havingArgs);
}