add romancal to ci

.github/workflows/ci.yml

@@ -33,3 +33,8 @@ jobs:
     with:
       envs: |
         - linux: rad
+  test_downstream:
+    uses: OpenAstronomy/github-actions-workflows/.github/workflows/tox.yml@v1
+    with:
+      envs: |
+        - linux: romancal

tests/test_open.py

@@ -1,3 +1,4 @@
+import json
 from pathlib import Path
 
 import asdf
@@ -236,3 +237,23 @@ def test_rdm_open_non_datamodel():
 
     with pytest.raises(TypeError, match=r"Unknown datamodel type: .*"):
         rdm_open(Path(__file__).parent / "data" / "not_a_datamodel.asdf")
+
+
+def test_open_asn(tmp_path):
+    romancal = pytest.importorskip("romancal")
+
+    fn = tmp_path / "test.asn"
+    asn = {
+        "product": [
+            {
+                "members": [],
+                "name": "foo",
+            }
+        ],
+    }
+    with open(fn, "w") as f:
+        json.dump(asn, f)
+
+    lib = datamodels.open(fn)
+
+    assert isinstance(lib, romancal.datamodels.ModelLibrary)

tox.ini

@@ -69,3 +69,17 @@ deps =
     build
 commands =
     python -m build .
+
+[testenv:romancal]
+change_dir = {env_tmp_dir}
+allowlist_externals =
+    git
+    bash
+commands_pre =
+    bash -c "pip freeze -q | grep 'roman_datamodels @' > {env_tmp_dir}/requirements.txt"
+    git clone https://github.com/spacetelescope/romancal.git
+    pip install -e romancal[test]
+    pip install -r {env_tmp_dir}/requirements.txt
+    pip freeze
+commands =
+    pytest tests/test_open.py::open_asn