writing test when using "source": "src"

[tonyfettes]

Feature Request

Summary

It's an often case of mine that I need to write some standalone test programs that I don't want them to be in the source directory. Therefore, I want to be able to write/run test program outside the source directory.

Motivation

I have written a tensor library my self at tonyfettes/torch.mbt, and now I want to try my tensor library to build a model, and train it on the infamous iris dataset.

I don't want any code related to the iris model to be inside the src directory since they are totally unrelated to the implementation of the tensor library.

Detailed Description

I want to be able to develop MoonBit program with such project structure,

.
├── LICENSE
├── README.md
├── moon.mod.json
├── src
│   ├── distributions.mbt
│   ├── moon.pkg.json
│   ├── nn.mbt
│   ├── random.mbt
│   ├── tensor.mbt
│   ├── value.mbt
│   └── value_test.mbt
└── test
    └── iris
        ├── iris.mbt
        └── moon.pkg.json

4 directories, 12 files

with some extra properties such as:

• Any user of mine won't be able to use the @test or @test/iris package. They should be internal/private.

Circumvents

1. Put all source at top-level of the directory and remove "source": "src" in the moon.mod.json, and move the test directory to internal/test.
2. Move the test directory to src/internal/test.

Possible Implementations

1. Provided an extra option to set "test-directory", for example:

   {
     // ...
     "test-directory": "test"
   }

2. Allow multiple directory to be used as "source directory", for example:

   {
     // ...
     "source": ["src", "test"]
   }

3. Treat any directory that is not the source directory as internal package.

Related Issues

Checklist

• I have added all necessary details to make it easy for the maintainers to understand my request.