Inconsistent behaviour of `file` function compared to nextflow

[Midnighter]

Greetings,

I recently ran into some trouble coming from misaligned expectations with the file function. I wanted to assert a few file properties and expected file to return Path instance, just as nextflow does. However, within nf-test, I get a java.io.File which lacks many of the attributes that I expect from nextflow.

When instead I use the path function, I get a sun.nio.fs.UnixPath which you have extended slightly in nf-test. However, it does not support the full range of methods that the nextflow Path does, for example, .name/.getName(). Since nf-test is very much focused on testing nextflow, I feel that it would cause the least confusion to simply let file do the same thing as in nextflow.