internal static void VerifyClone(SemanticModel model)
{
foreach (var node in model.SyntaxTree.GetRoot().DescendantNodes())
{
var operation = model.GetOperation(node);
if (operation == null)
{
continue;
}
var clonedOperation = model.CloneOperation(operation);
// check whether cloned IOperation is same as original one
var original = OperationTreeVerifier.GetOperationTree(model.Compilation, operation);
var cloned = OperationTreeVerifier.GetOperationTree(model.Compilation, clonedOperation);
Assert.Equal(original, cloned);
// make sure cloned operation is value equal but doesn't share any IOperations
var originalSet = new HashSet <IOperation>(operation.DescendantsAndSelf());
var clonedSet = new HashSet <IOperation>(clonedOperation.DescendantsAndSelf());
Assert.Equal(originalSet.Count, clonedSet.Count);
Assert.Equal(0, originalSet.Intersect(clonedSet).Count());
}
}