use testmodule outside of vscode

[CarloLucibello]

Assuming I have a test_module.jl file containing

@testmodule TestModule begin
 ...
end

I would like to use it as a standard module outside of the vscode testing framework.
Unfortunately though, the following happens

julia> using TestItems

julia> include("test/test_module.jl")

julia> using .TestModule
ERROR: UndefVarError: `TestModule` not defined in `Main`
Suggestion: check for spelling errors or missing imports.

[CarloLucibello]

Related discord post https://discourse.julialang.org/t/using-testitemrunner-snippets-modules-when-troubleshooting/123057/1