public string Evaluate(TagModel model)
{
try
{
XPathNodeIterator result = XmlHelper.GetAndEvaluate(Source, Select, model);
var escapeXml = GetAutoValueAsBool("EscapeXml", model);
string resultStr = result != null?CollectionUtils.ToString(result, info) : String.Empty;
return(escapeXml ? StringUtils.EscapeXml(resultStr) : resultStr);
} catch (XPathException XPe)
{
throw TagException.IllegalXPath(XPe).Decorate(Context);
}
}
public void CheckSelectWrongXpathSyntax()
{
var tag = new Out();
tag.Select = new MockAttribute(new Constant("//note[@id=\"3\"/body"));
tag.Source = new MockAttribute(new Constant("xml"));
try
{
Assert.That(tag.Evaluate(_model), Is.EqualTo(String.Empty));
Assert.Fail("Expected exception");
}
catch (TagException XPe)
{
Assert.That(XPe.Message.StartsWith(TagException.IllegalXPath(new Exception("")).Message), Is.True);
}
}
public static bool GetAndEvaluateAsBool(ITagAttribute source, ITagAttribute xPath, TagModel model, bool fallBack)
{
bool result = fallBack;
try
{
XPathNodeIterator nodes = GetAndEvaluate(source, xPath, model);
if (nodes != null && nodes.Count > 0)
{
XPathNavigator node = GuardSingleNode(model, nodes, xPath);
result = ParseBoolean(nodes.Current) ?? fallBack;
}
} catch (FormatException Fe)
{
throw TagException.IllegalXPath(Fe).Decorate(xPath.Context);
}
return(result);
}
public void IfShouldThrowExceptionWhenNoneBoolIsFound()
{
var tag = new If
{
Select = new MockAttribute(new Constant("/results/value[position()=3]")),
Source = new MockAttribute(new Constant("xml")),
Body = new MockAttribute(new Constant("Show me"))
};
try
{
tag.Evaluate(_model);
Assert.Fail("Expected exception");
}
catch (TagException e)
{
Console.WriteLine(e.Message);
Console.WriteLine(TagException.IllegalXPath(new FormatException()).Message);
Assert.That(e.Message.StartsWith(TagException.IllegalXPath(new FormatException("")).Message));
}
}
