public void Unbound_Parameter()
{
var uvs = new UnboundVariableScanner();
var p = Expression.Parameter(typeof(int));
uvs.Visit(p);
Assert.IsTrue(uvs.UnboundVariables.SetEquals(new[] { p }));
}
public void Bound_Lambda()
{
var uvs = new UnboundVariableScanner();
var e = (Expression<Func<int, int>>)(x => x);
uvs.Visit(e);
Assert.AreEqual(0, uvs.UnboundVariables.Count);
}
public void Unbound_Catch_Body()
{
var uvs = new UnboundVariableScanner();
var p = Expression.Parameter(typeof(int));
var e = Expression.TryCatch(Expression.Default(typeof(int)), Expression.Catch(typeof(Exception), p));
uvs.Visit(e);
Assert.IsTrue(uvs.UnboundVariables.SetEquals(new[] { p }));
}
public void Bound_Catch()
{
var uvs = new UnboundVariableScanner();
var p = Expression.Parameter(typeof(Exception));
var e = Expression.TryCatch(Expression.Empty(), Expression.Catch(p, Expression.Empty()));
uvs.Visit(e);
Assert.AreEqual(0, uvs.UnboundVariables.Count);
}
public void Bound_Block()
{
var uvs = new UnboundVariableScanner();
var p = Expression.Parameter(typeof(int));
var e = Expression.Block(new[] { p }, p);
uvs.Visit(e);
Assert.AreEqual(0, uvs.UnboundVariables.Count);
}
public void Unbound_Nested()
{
var uvs = new UnboundVariableScanner();
var p = Expression.Parameter(typeof(int));
var x = Expression.Parameter(typeof(int));
var y = Expression.Parameter(typeof(int));
var z = Expression.Parameter(typeof(Exception));
var e = Expression.Lambda(Expression.Block(new[] { x }, Expression.TryCatch(Expression.Default(typeof(int)), Expression.Catch(z, Expression.Add(x, y))), p), y);
uvs.Visit(e);
Assert.IsTrue(uvs.UnboundVariables.SetEquals(new[] { p }));
}
