public void Returns_Parameter()
{
const string propertyName = "TestProperty";
var result = _propertyResolver.Resolve(null, propertyName);
result.ShouldBeSameAs(propertyName);
}
public JsonPatchPathParserResult ParsePath <T>(string path, T target)
{
var pathObject = new JsonPatchPath();
object targetObject = target;
// Iterate the path finding the target object and property
if (string.IsNullOrEmpty(path))
{
return(Failure("Could not parse the path \"\". Nancy.Json cannot modify the root of the object"));
}
if (!path.StartsWith("/"))
{
return(Failure("Could not parse the path \"" + path + "\". Path must start with a '/'"));
}
if (path.Equals("/"))
{
return(Failure("Could not parse the path \"/\". This path is not valid in Nancy.Json"));
}
// Split and remove the initial slash
var pathSections = path.Split('/').Skip(1).ToArray();
for (var i = 0; i < pathSections.Length - 1; i++)
{
int ind;
if (int.TryParse(pathSections[i], out ind))
{
// This property refers to an item in the collection. Check we are acting on a collection
if (!IsCollectionType(targetObject))
{
return(Failure("Could not access path '{0}' in target object. Parent object for '{1}' is not a collection", path, pathSections[i]));
}
targetObject = ((IList)targetObject)[ind];
}
else
{
// This is a normal property, rather than a collection
targetObject = GetValueOfProperty(targetObject, pathSections[i]);
if (targetObject == null)
{
return(Failure("Could not access path '{0}' in target object. '{1}' is null", path, pathSections[i]));
}
}
}
var lastProperty = pathSections.Last();
int indexer;
if (int.TryParse(lastProperty, out indexer) || lastProperty.Equals("-"))
{
// Last section of path is an indexer, return the parent object as the target
pathObject.IsCollection = true;
if (!IsCollectionType(targetObject))
{
return(Failure("Could not access path '{0}' in target object. Parent object for '{1}' is not a collection", path, lastProperty));
}
}
else
{
lastProperty = _propertyResolver.Resolve(targetObject.GetType(), lastProperty);
// Property is not a collection, return
var targetProperty = targetObject.GetType().GetProperty(lastProperty);
if (targetProperty == null)
{
return(Failure("Could not find path '{0}' in target object", path));
}
if (!targetProperty.CanWrite)
{
return(Failure("Property '{0}' on target object cannot be set", path));
}
}
pathObject.TargetObject = targetObject;
pathObject.TargetPropertyName = lastProperty;
return(new JsonPatchPathParserResult
{
Path = pathObject
});
}
