internal static bool SetupReturns(Mock mock, LambdaExpression expression, object value)
{
PropertyInfo propertyToSet = null;
if (expression.Body is MemberExpression me &&
me.Member is PropertyInfo pi &&
!(pi.CanRead(out var getter) && getter.CanOverride() && ProxyFactory.Instance.IsMethodVisible(getter, out _)) &&
pi.CanWrite(out _))
{
// LINQ to Mocks allows setting non-interceptable properties, which is handy e.g. when initializing DTOs.
// Generally, we prefer having a setup for a property's return value, but if that isn't possible (e.g.
// with a non-virtual or sealed property), we will have to fall back to simply setting that property
// through reflection.
//
// The above condition detects exactly those cases.
propertyToSet = pi;
// The property access (which is one that cannot be setup) must be subtracted from the setup expression:
expression = Expression.Lambda(me.Expression, expression.Parameters);
if (!expression.CanSplit())
{
Mocks.SetProperty(mock, propertyToSet, value);
return(true);
}
}
var setup = Mock.Setup(mock, expression, condition: null);
if (propertyToSet == null)
{
setup.SetEagerReturnsResponse(value);
}
else
{
Mocks.SetProperty(setup.Mock, propertyToSet, value);
}
return(true);
}