public void ExternalStaticMethodPreloadedFromAssembly()
{
var currentDirectory = Path.GetDirectoryName(typeof(ExternalAssemblyBugTests).Assembly.Location);
var searchPath = Path.GetFullPath(currentDirectory + @"\..\..\..\..\");
var assemblyFilePath = Directory.GetFiles(
searchPath, "ExternalMethods.dll", SearchOption.AllDirectories).First();
var loadContext = new AssemblyLoadContext(name: Guid.NewGuid().ToString(), isCollectible: true);
{
// read the file and release it immediately (do not keep handle)
var stream = new FileStream(assemblyFilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
// alternatively can be used the line below:
//using var stream = new MemoryStream(File.ReadAllBytes(assemblyFilePath));
var loadedAssembly = loadContext.LoadFromStream(stream);
Assert.AreEqual("<Unknown>", loadedAssembly.ManifestModule.FullyQualifiedName);
Assert.AreEqual("<Unknown>", loadedAssembly.ManifestModule.Name);
Assert.AreEqual("ExternalMethods.dll", loadedAssembly.ManifestModule.ScopeName);
// it seems that ScopeName is only reliable information in this case
}
const string input = "{ }";
const string transformer = "{ \"result\": \"#StaticMethod()\" }";
_context.RegisterCustomFunction("ExternalMethods", "ExternalMethods.ExternalClass", "StaticMethod");
var result = new JsonTransformer(_context).Transform(transformer, input);
Assert.AreEqual("{\"result\":\"External Static\"}", result);
_context.ClearCustomFunctionRegistrations();
loadContext.Unload();
}
public void ClearCustomFunctions()
{
const string unregisteredFunction = "NavigateTypedNullParameters";
const string input = "{ \"lvl1\": { \"some-bool\": true } }";
const string transformer = "{ \"navigated\": \"#NavigateTypedNullParameters(#valueof($.non-existent))\" }";
var context = new JUSTContext(new[] {
new CustomFunction {
AssemblyName = "ExternalMethods",
Namespace = "ExternalMethods.ExternalClass",
MethodName = unregisteredFunction
}
});
context.ClearCustomFunctionRegistrations();
var result = Assert.Throws <Exception>(() => new JsonTransformer(context).Transform(transformer, input));
Assert.AreEqual($"Error while calling function : #{unregisteredFunction}(#valueof($.non-existent)) - Invalid function: #{unregisteredFunction}", result.Message);
}