Windows Script Host: Cannot retrieve referenced URL (512KB File Size)

I'm trying to append OpenLayer.js file to the test since I'm writing tests for code that is using this library.

But either the test throws this exception: Windows Script Host: Cannot retrieve referenced URL

Or it says FileNotFoundException

Clearly the file is there and I have checked multiple times that it is not corrupted. I tried using both absolute and relative path but no dice.

I have just started using JSTest.NET and my test is basically a simple example test.

Can you please help me with this.

[cbaxter]

The FileNotFoundException is thrown from AppendFile when the ScriptIncludeElement cannot find the physical file on disk at the location specified (i.e., the file is truly missing).

The interesting issue is the Windows Script Host: Cannot retrieve referenced URL

Initial research suggests that the Windows Script Host won't load individual files over 512KB and OpenLayers.js is a massive 957KB. I will investigate tomorrow if there is a way to work around the file size limit.

Outside of some third-party libraries that I have always mocked out in my test cases (no need to test their code); I cannot say I have ever hit a single file that big before.

FileNotFoundException was encountered when file was placed somewhere other than (..\Examples\OpenLayers.js) I made sure like 10 times that file is there because on pasting the same path in the browser displayed the file correctly. So does this mean that all shared files must be placed under (..\Project_Name\xyz.js)?

I also tried to use OpenLayers.js as a ScriptLibrary like JsAssertLibrary, JsHamcrest...etc but this time it shoots out StreamReader is null exception, which is pretty interesting since obviously file is not null.

[cbaxter]

JavaScript files can be placed anywhere on the file system (relative to the test runner's executing folder -- typically bin).

Creating an embedded resource will throw a NullReferenceException if the resourceName is incorrect (should make that throw a cleaner message) or the file Build Action is not Embedded Resource. I confirmed with a sample:

public class OpenLayersLibrary : EmbeddedScriptBlock
{
    public OpenLayersLibrary()
        : base(typeof(OpenLayersLibrary).Assembly, "Sample.OpenLayers.js")
    { }
}

The issue comes back to the File Size; even with the embedded resource it will fail saying the file could not be found even though the path does exist.

As mentioned, I will research tomorrow if I can get around the apparent file size limitation.

[kiswa]

cbaxter, you may find this forum thread useful: http://www.tek-tips.com/viewthread.cfm?qid=1345627

@kiswa - Hmmm I will give it a try, but I'm a bit hesitant to change OpenLayers.js because it is an external library and I do not want to deal with all those licensing issues (though it is open source) that come with changing the original file.

Also that thread says that file size limit might not be an issue? Any other guesses from your side?

[cbaxter]

@kiswa - Thank you, I have read the referenced thread.

@absharma - There does appear to be an unofficial limit of 512KB for a script file. When time permits, I may look in to the suggested ExecGlobal/Execute statements for dynamically loading very large files. To be honest, consuming such a large file is atypical from my experience (I personally have never hit the issue in 4 years).

@cbaxter - Thanks for the quick response.Yeah I agree with you that dealing with such a large file is not common, but again I can split file into pieces and load it, but not everyone will do that since it is a third party library.
I will also try make it work with ExecGlobal/Execute statements, and will keep you posted.