private static T TryGetActual <T>(ICanAddMatcher <T> matcher)
{
if (matcher == null)
{
throw new InvalidOperationException(
$"Can't get an Actual value from a NULL matcher"
);
}
var prop = matcher?.GetType()
.GetProperties()
.FirstOrDefault(pi => pi.Name.ToLower() == "actual");
if (prop == null)
{
throw new InvalidOperationException(
$"Failed to GetActual on type {typeof(T)}. GetActual only works on IHasActual<T> or objects with an 'Actual' property");
}
try
{
return((T)prop.GetValue(matcher));
}
catch
{
throw new InvalidOperationException(
@$ "Unable to get Actual value matching type {
typeof(T)
} from {
matcher.Stringify()
}"