Unit Testing in Nim: Is it possible to get the name of a source file at compile time?

I'm planning a project with multiple modules, and I was looking for a nice solution to run all existing unit tests in the project at once. I came up with the following idea: I can run nim --define:testing main.nim and use the following template as a wrapper for all my unit tests.

# located in some general utils module:
template runUnitTests*(code: stmt): stmt =
  when defined(testing):
    echo "Running units test in ..."
    code

This seems to be working well so far.

As a minor tweak, I was wondering if I can actually print out the file name which is calling the runUnitTests template. Is there any reflection mechanism to get the source file name at compile time?

instantiationInfo seems to be what you want: http://nim-lang.org/docs/system.html#instantiationInfo,

template filename: string = instantiationInfo().filename

echo filename()