add tests for metatensor-torch subpackage

we move the existing tests into metatensor-core tests

.github/workflows/tests.yml

@@ -28,8 +28,11 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - run: pip install tox
 
-    - name: run Python tests
-      run: tox -e tests
+    - name: run Python metatensor-core tests
+      run: tox -e metatensor-core-tests
+
+    - name: run Python metatensor-torch tests
+      run: tox -e metatensor-torch-tests
 
     - name: try building Python wheel and sdist
       run: tox -e build

tox.ini

@@ -3,22 +3,32 @@ ignore_basepython_conflict = true
 # these are the default environments, i.e. the list of tests running when you
 # execute `tox` in the command-line without anything else
 envlist =
-    tests
+    metatensor-core-tests
+    metatensor-torch-tests
     lint
 
 lint_folders = {toxinidir}/examples {toxinidir}/src {toxinidir}/tests
 
 [testenv]
 
-[testenv:tests]
-# this environement runs Python tests
+[testenv:metatensor-core-tests]
+# this environement runs Python tests with metatensor-core
 usedevelop = true
 deps =
     ase
     pytest
 commands =
     pytest --import-mode=append {posargs}
 
+[testenv:metatensor-torch-tests]
+# this environement runs Python tests with metatensor-torch
+usedevelop = true
+deps =
+    ase
+    pytest
+    metatensor[torch] @ https://github.com/lab-cosmo/metatensor/archive/b17bc4d.zip
+commands =
+    pytest --import-mode=append {posargs}
 
 [testenv:lint]
 skip_install = true