clion swift XCTest resource file access?

I am trying to do what should be a simple test but I'm 110% stuck.  Hopefully someone has done this before and can save me from my pit of frustration.  I'm new to CLion so please be patient.

I have installed CLion and the swift extension.  I have a project which includes tests.  My Package.Swift includes a declaration asking for TestData files to be copied to the bundle:

import PackageDescription

let package = Package(
    name: "asmtobin",
    dependencies: [],
    targets: [
        .target(name: "asmtobin", dependencies: []),
        .testTarget(name: "asmtobinTests", dependencies: ["asmtobin"], 
            resources: [.process("TestData")]
)

In my test project I have a TestData folder:

The CommentsOnly.txt file is what I am trying to access in a XCTest.  There are quite a few examples around the Internet but for some reason I can't get anything to work.  Any assistance is greatly appreciated.  The following code fails:

func testBundleResources() throws {
    let testBundle = Bundle(for: type(of: self))
    let fooTxtPath = testBundle.path(forResource: "CommentsOnly", ofType: "txt")
    let fooTxtURL = testBundle.url(forResource: "CommentsOnly", withExtension: "txt")

    XCTAssertTrue(fooTxtURL != nil || fooTxtPath != nil)
}

Note: if I try and use Bundle.module.path(forResource, ofType) (like some of the Swift 5.3 examples say to) I get told that Bundle doesn't have a module member.

When I print some of the values the output is:

Testing started at 4:56 pm ...
/Applications/Xcode.app/Contents/Developer/usr/bin/xctest -XCTest asmtobinTests.asmtobinTests/testBundleResources /Users/ty/CLionProjects/asmtobin/.build/debug/asmtobinPackageTests.xctest
testBundle = Optional(Contents/Resources/ -- file:///Users/ty/CLionProjects/asmtobin/.build/x86_64-apple-macosx/debug/asmtobinPackageTests.xctest/)
fooTxtPath = nil
fooTxtURL = nil

XCTAssertTrue failed
/Users/ty/CLionProjects/asmtobin/Tests/asmtobinTests/asmtobinTests.swift:102: error: -[asmtobinTests.asmtobinTests testBundleResources] : XCTAssertTrue failed