public void PartialEvalMemberInit()
{
Expression <Func <int, Test> > expr = x => new Test
{
List = new List <int>(x),
Next =
{
Next =
{
List = { 1, 2, 3, x }
},
List = { 1, 2, 3 }
}
};
var evaled = (LambdaExpression)ExpressionEx.PartialEval(expr);
Assert.Equal(ExpressionType.MemberInit, evaled.Body.NodeType);
expr = x => new Test
{
List = new List <int>(3),
Next =
{
Next =
{
List = { 1, 2, 3 }
},
List = { 1, 2, 3 }
}
};
evaled = (LambdaExpression)ExpressionEx.PartialEval(expr);
Assert.Equal(ExpressionType.Constant, evaled.Body.NodeType);
}
public void PartialEvalListInit()
{
Expression <Func <int, List <int> > > expr = x => new List <int> {
x, x, x, 2
};
Assert.Equal(ExpressionType.ListInit, expr.Body.NodeType);
var evaled = (LambdaExpression)ExpressionEx.PartialEval(expr);
Assert.Equal(ExpressionType.ListInit, evaled.Body.NodeType);
expr = x => new List <int> {
1, 2, 3, 4
};
Assert.Equal(ExpressionType.ListInit, expr.Body.NodeType);
evaled = (LambdaExpression)ExpressionEx.PartialEval(expr);
Assert.Equal(ExpressionType.Constant, evaled.Body.NodeType);
expr = x => new List <int> {
FuncEval(1), x
};
Assert.Equal(ExpressionType.ListInit, expr.Body.NodeType);
var listInit = (ListInitExpression)expr.Body;
Assert.Equal(ExpressionType.Call, listInit.Initializers[0].Arguments[0].NodeType);
evaled = (LambdaExpression)ExpressionEx.PartialEval(expr);
Assert.Equal(ExpressionType.ListInit, evaled.Body.NodeType);
listInit = (ListInitExpression)evaled.Body;
Assert.Equal(ExpressionType.Constant, listInit.Initializers[0].Arguments[0].NodeType);
}
public void PartialEvalDontEvalsWhatThrows()
{
Expression <Func <int> > test = () => 2 + FuncDontEval(1);
var expr = test.Body;
Assert.Equal(ExpressionType.Add, expr.NodeType);
var evaled = ExpressionEx.PartialEval(expr);
Assert.Equal(ExpressionType.Add, evaled.NodeType);
}
public void PartialEvalEvalsAll()
{
Expression <Func <int> > test = () => 2 + FuncEval(1);
var expr = test.Body;
Assert.Equal(ExpressionType.Add, expr.NodeType);
var evaled = ExpressionEx.PartialEval(expr);
Assert.Equal(ExpressionType.Constant, evaled.NodeType);
}
public void PartialEvalEvalsVoid()
{
var c = new ClassWithVoid();
Expression <Action> test = () => c.SetValue(12);
var expr = test.Body;
Assert.Equal(ExpressionType.Call, expr.NodeType);
var evaled = ExpressionEx.PartialEval(expr);
Assert.Equal(ExpressionType.Default, evaled.NodeType);
Assert.Equal(12, c.Value);
}
public void PartialDontEvalsVoidThatThrows()
{
var c = new ClassWithVoid();
Expression <Action> test = () => c.InvokeWith42(10);
var expr = test.Body;
Assert.Equal(ExpressionType.Call, expr.NodeType);
var evaled = ExpressionEx.PartialEval(expr);
Assert.Equal(ExpressionType.Call, evaled.NodeType);
test = () => c.InvokeWith42(42);
expr = test.Body;
Assert.Equal(ExpressionType.Call, expr.NodeType);
evaled = ExpressionEx.PartialEval(expr);
Assert.Equal(ExpressionType.Default, evaled.NodeType);
Assert.Equal(42, c.Value);
}
