Add an integration test for consistency with common-definitions

.github/workflows/integration.yaml

@@ -0,0 +1,30 @@
+# This workflow checks that no conflicts exist with the common-definitions repo
+
+name: Check consistency with common-definitions
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ '**' ]
+  schedule:
+    - cron:  '45 5 * * *'
+
+jobs:
+  project-validation:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Python 3.11
+      uses: actions/setup-python@v4
+      with:
+        python-version: 3.11
+
+    - name: Install requirements
+      run: pip install nomenclature-iamc pytest
+
+    - name: Run the integration test
+      run: pytest tests/test_integration.py

tests/test_integration.py

@@ -0,0 +1,27 @@
+import pathlib
+import yaml
+
+import nomenclature
+
+
+def test_integration_common_definitions():
+
+    config_file = "../definitions/nomenclature.yaml"
+    config = {
+        "repositories": {
+            "common-definitions": {
+                "url": "https://github.com/IAMconsortium/common-definitions.git/"
+            }
+        },
+        "definitions": {
+            "region": {"repository": "common-definitions"},
+            "variable": {"repository": "common-definitions"},
+        },
+    }
+
+    with open(config_file, "w") as file:
+        yaml.dump(config, file)
+
+    nomenclature.DataStructureDefinition("../definitions")
+
+    pathlib.Path(config_file).unlink()