Unable to run tests on already published apps (Global scope)

[Thomas-Torggler-EOS]

1. Describe the bug
When running tests through the new BC28 test runner forces a deploy of the app being tested before running tests. It does so in Developer-Mode. If I already have the app deployed through other means (PowerShell or API) I cannot use the test runner because it fails with the following error:

[2026-04-27 10:56:20.16] The request for path /local28/dev/apps?SchemaUpdateMode=synchronize&DependencyPublishingOption=ignore failed with code UnprocessableEntity. 
Reason: The extension could not be deployed because it is already deployed as a global application or a per tenant application. 
The extension that is already deployed is <redacted> by <redacted> 28.0.0.0 published as Global application.

I understand that publishing the app first ensures that the code that is ran/tested is effectively the one currently present in VS Code. This should be configurable though, so it becomes the developers job to ensure this. This wouldn't force me into a workflow that I don't want or can apply.

2. To Reproduce

1. Publish an app via PowerShell in global scope
2. Try to run a test from VS Code

3. Expected behavior
Two options basically. One does not exclude the other:

1. If the app being tested is already deployed into a global scope (and therefore a development-deploy is not possible), do not attempt to re-deploy it, give a warning rather. Thus, run tests on the already deployed app. It is my responsibility to ensure the correct one is deployed.
2. Add a setting where I can configure if a pre-test deployment should be done. This allows me to disable it for my use cases.

4. Actual behavior
Running a test will always attempt a deploy first. This adds a series of problems/requirements that aren't strictly necessary.

5. Versions:

• AL Language: 18.0.2293710
• Visual Studio Code: 1.117.0
• Business Central: 28.x