public void VisitAndConvertSameResultAsVisit()
{
ConstantExpression constant = Expression.Constant(0);
ConstantExpression visited = new ConstantRefreshingVisitor().VisitAndConvert(constant, "");
Assert.NotSame(constant, visited);
Assert.Equal(0, visited.Value);
}
public void VisitCollectionDifferOnFirst()
{
string value = new string(new[] { 'a', 'b', 'c' });
ReadOnlyCollection <Expression> collection = new List <Expression> {
Expression.Constant(value)
}.AsReadOnly();
ReadOnlyCollection <Expression> visited = new ConstantRefreshingVisitor().Visit(collection);
Assert.NotSame(collection, visited);
Assert.NotSame(collection[0], visited[0]);
Assert.Same(value, ((ConstantExpression)visited[0]).Value);
}
public void VisitAndConvertSameResultAsVisit()
{
var constant = Expression.Constant(0);
var visited = new ConstantRefreshingVisitor().VisitAndConvert(constant, "");
Assert.NotSame(constant, visited);
Assert.Equal(0, visited.Value);
}
public void VisitCollectionDifferOnLater()
{
string value = new string(new[] { 'a', 'b', 'c' });
var collection = new List<Expression> { Expression.Empty(), Expression.Constant(value) }.AsReadOnly();
var visited = new ConstantRefreshingVisitor().Visit(collection);
Assert.NotSame(collection, visited);
Assert.Same(collection[0], visited[0]);
Assert.NotSame(collection[1], visited[1]);
Assert.Same(value, ((ConstantExpression)visited[1]).Value);
}
