Adding GHA CI file

.github/workflows/ci.yml

@@ -0,0 +1,37 @@
+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Conda
+        uses: conda-incubator/setup-miniconda@v3
+          with:
+            auto-activate-base: true
+            activate-environment: ""
+
+      - name: Install OpenMC
+        shell: bash
+        run: |
+          conda config --add channels conda-forge
+          conda install -c conda_forge openmc==0.15.0
+
+      - name: Clone OpenMC
+        run: |
+          git clone https://github.com/openmc-dev/openmc --branch v0.15.0 $HOME
+
+
+      - name: Test examples
+        run: |
+          OPENMC_EXAMPLES_DIR=$HOME/openmc/examples pytest -v ./test/test_examples.py

test/test_examples.py

@@ -0,0 +1,32 @@
+import os
+from pathlib import Path
+
+import pytest
+
+from openmc_cad_adapter import to_cubit_journal
+import openmc
+
+
+examples = ["pincell/build_xml.py",
+            "lattice/hexagonal/build_xml.py",
+            "assembly/assembly.py"]
+
+if 'OPENMC_EXAMPLES_DIR' not in os.environ:
+    raise EnvironmentError('Variable OPENMC_EXAMPLES_DIR is required')
+
+OPENMC_EXAMPLES_DIR = Path(os.environ['OPENMC_EXAMPLES_DIR']).resolve()
+
+def example_name(example):
+    return '-'.join(example.split('/')[:-1])
+
+@pytest.mark.parametrize("example", examples, ids=example_name)
+def test_example(example):
+
+    openmc.reset_auto_ids()
+    exec(open(OPENMC_EXAMPLES_DIR / example).read())
+
+    openmc.reset_auto_ids()
+    model = openmc.Model.from_xml()
+
+    world = [500, 500, 500]
+    to_cubit_journal(model.geometry, world=world, filename=example_name(example))