Introduce tox for testing

.github/workflows/build-and-test.yml

@@ -2,11 +2,10 @@ name: Build and Test
 on:
   push:
     branches:
-      - master
-      - develop
+      - '*'
   pull_request:
     paths:
-      - '**'
+      - '*'
 
 jobs:  
   sdist:
@@ -28,21 +27,18 @@ jobs:
   test:
     name: Run mock unit tests
     runs-on: ubuntu-latest
+    container: precice/precice:nightly
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v2   
-      - name: Install FEniCS and scipy (see https://github.com/precice/fenics-adapter/issues/189)
+      - name: Install FEniCS and tox
         run:  |
-          sudo add-apt-repository ppa:fenics-packages/fenics
-          sudo apt-get update
-          sudo apt-get install -y python3-scipy fenics
-      - name: Install fake precice
-        run:  |
-          mkdir -p precice
-          echo "from setuptools import setup" >> precice/setup.py
-          echo "setup(name='pyprecice', version='3.0.0.0')" >> precice/setup.py
-          pip3 install --break-system-packages ./precice/
+          apt update
+          apt install -y software-properties-common
+          add-apt-repository ppa:fenics-packages/fenics -y
+          apt update
+          apt install -y fenics tox
       - name: Run unit tests
-        run:  python3 setup.py test -s tests.unit
+        run:  tox -e unit
       - name: Run integration tests
-        run:  python3 setup.py test -s tests.integration
+        run:  tox -e integration

README.md

@@ -61,12 +61,13 @@ After cloning this repository and switching to the root directory (`fenics-adapt
 
 As a first test, try to import the adapter via `python3 -c "import fenicsprecice"`.
 
-You can run the other tests via `python3 setup.py test`.
+You can run the other tests via `tox`.
+If you want to run them separately, use `tox -e unit` and `tox -e integration` respectively.
 
 Single tests can be also be run. For example the test `test_vector_write` in the file `test_write_read.py` can be run as follows:
 
 ```bash
-python3 -m unittest tests.test_write_read.TestWriteandReadData.test_vector_write
+tox -e all -- tests/integration/test_write_read.py::TestWriteandReadData::test_vector_write
 ```
 
 #### Troubleshooting

tox.ini

@@ -0,0 +1,30 @@
+[tox]
+requires =
+    tox>=4
+env_list = all
+
+[testenv]
+skip_install = True
+description = base environment for testing
+deps =
+    pytest>=8
+    numpy>=1.13.3,<2
+    scipy<1.15.0
+    mpi4py<4
+sitepackages = True
+
+[testenv:all]
+description = run all tests
+commands =
+    pytest {posargs}
+
+[testenv:unit]
+description = run unit tests
+commands =
+    pytest tests/unit
+
+[testenv:integration]
+description = run integration tests
+commands =
+    pytest tests/integration
+