public void FuncletExpression_Basics3()
{
var c = Expression.Constant("bar");
var f = FuncletExpression.Create <string>(c);
var r = new NoOpVisitor().Visit(f);
var eq = new ExpressionEqualityComparator();
Assert.IsTrue(eq.Equals(Expression.Constant("bar"), r));
}
public void FuncletExpression_Basics2()
{
var a = new Foo();
var c = Expression.Constant(a);
var f = FuncletExpression.Create(c);
a.x = 42;
Assert.AreEqual(42, f.Reduce().Evaluate <Foo>().x);
a.x = 43;
Assert.AreEqual(43, f.ReduceAndCheck().Evaluate <Foo>().x);
a.x = 44;
Assert.AreEqual(44, f.ReduceExtensions().Evaluate <Foo>().x);
}
public void FuncletExpression_Basics1()
{
var c = Expression.Constant(42);
var f = FuncletExpression.Create(c);
Assert.IsTrue(f.CanReduce);
Assert.AreEqual(ExpressionType.Extension, f.NodeType);
Assert.AreEqual(typeof(int), f.Type);
Assert.AreEqual("Eval(42)", f.ToString());
Assert.AreEqual(42, f.Reduce().Evaluate <int>());
Assert.AreEqual(42, f.ReduceAndCheck().Evaluate <int>());
Assert.AreEqual(42, f.ReduceExtensions().Evaluate <int>());
var eq = new ExpressionEqualityComparer();
Assert.IsTrue(eq.Equals(c, f.Reduce()));
Assert.IsTrue(eq.Equals(c, f.ReduceAndCheck()));
Assert.IsTrue(eq.Equals(c, f.ReduceExtensions()));
}
public void FuncletExpression_ArgumentChecking()
{
AssertEx.ThrowsException <ArgumentNullException>(() => FuncletExpression.Create(expression: null), ex => Assert.AreEqual("expression", ex.ParamName));
AssertEx.ThrowsException <ArgumentNullException>(() => FuncletExpression.Create <int>(expression: null), ex => Assert.AreEqual("expression", ex.ParamName));
}
protected override Expression ResolveExpression <T>(T expression, MemberInfo member, Func <T, Expression> visit)
{
return(FuncletExpression.Create(expression));
}