public void EvaluateSimpleNewExpression()
{
IExpression expression = new NewExpression("System.Data.DataSet", null);
object result = expression.Evaluate(new Context());
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(System.Data.DataSet));
}
public void EvaluateNewExpression()
{
NewExpression expression = new NewExpression(new ConstantExpression("System.IO.FileInfo"), new IExpression[] { new ConstantExpression("myfile.txt") });
object result = expression.Evaluate(new ValueEnvironment());
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(System.IO.FileInfo));
}
public void EvaluateNewExpressionWithAliasedType()
{
IExpression expression = new NewExpression("Channel", null);
BindingEnvironment environment = new BindingEnvironment();
environment.SetValue("Channel", typeof(Channel));
object result = expression.Evaluate(environment);
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(Channel));
}
public void EvaluateNewExpressionWithAliasedType()
{
IExpression expression = new NewExpression("Lexer", new List <IExpression>()
{
new ConstantExpression(string.Empty)
});
Context context = new Context();
context.SetValue("Lexer", typeof(Lexer));
object result = expression.Evaluate(context);
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(Lexer));
}
public void EvaluateNewExpressionWithArguments()
{
IExpression expression = new NewExpression("System.IO.DirectoryInfo", new IExpression[] { new ConstantExpression(".") });
object result = expression.Evaluate(new Context());
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(System.IO.DirectoryInfo));
DirectoryInfo di = (DirectoryInfo)result;
DirectoryInfo current = new DirectoryInfo(".");
Assert.AreEqual(current.FullName, di.FullName);
}
public void EvaluateNewExpressionUsingTypeName()
{
Context parent = new Context();
IExpression texpr = new DotExpression(new NameExpression("BScript"), "Context");
IList <IExpression> exprs = new List <IExpression>()
{
new ConstantExpression(parent)
};
var expr = new NewExpression(texpr, exprs);
var result = expr.Evaluate(null);
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(Context));
var context = (Context)result;
Assert.AreSame(parent, context.Parent);
}