Unable to load JS file from a swift package unit test

Question

I am trying to load a Javascript file from within a Unit Test for a Swift Package I am working on and it is failing.

Here is what I have so far ...

1. The sample files are located in MyPackage/Tests/MyPackageTests/Resources/Sample.js

2. Within the Package.swift I have added the recources attribute to the .testTarget as follows:

import PackageDescription

let package = Package(
    name: "MyPackage",
    products: [
        .library(
            name: "MyPackage",
            targets: ["MyPackage"]),
    ],
    dependencies: [],
    targets: [
        .target(
            name: "MyPackage"
        ),
        
        .testTarget(
            name: "MyPackageTests",
            dependencies: ["MyPackage"],
            resources: [.process("Resources")] // <---- Here is where I declare the Resources
        ),
        
    ]
)

3. In my test case I have the following code:

import XCTest
import JavaScriptCore

class JavaScriptCoreTest: XCTestCase {

    func testParseJSFile() throws {
        let testBundle = Bundle(for: type(of: self))
        XCTAssertNotNil(testBundle)

        let file = "Sample"

        guard let url = testBundle.url(forResource: file, withExtension: "js") else {
            fatalError("Unable to find resource \(file)") // <--- ERROR HERE
        }

        guard let data = try? Data(contentsOf: url) else {
            fatalError("Failed to load \(file) from bundle.")
        }
        
        let js = String(decoding: data, as: UTF8.self)

        let ctx = JSContext()!
        ctx.evaluateScript(js)
        
        // Rest of test logic here
                
                
    }

For some reason I keep getting nil for the url. Any thoughts on what I might be doing wrong here?

NOTE I did read this other answer on StackOverflow but it did not help me here.