Bootstrap material state across production runs

tests/test_enlyze_gateway.py

@@ -290,3 +290,64 @@ def test_malformed_later_page(timeseries, data, error) -> None:
     with pytest.raises(ValueError, match=f"Invalid timeseries response on page 2:.*{error}"):
         gateway.get_material_samples(**args)
     assert client.post_json.call_count == 2
+
+
+def test_production_runs_follow_pages_and_find_open_run() -> None:
+    client = Mock()
+    closed = dict(uuid="closed", machine="m", production_order="opaque-order",
+                  start="2026-09-01T00:00:00Z", end="2026-09-01T01:00:00Z")
+    opened = {**closed, "uuid": "open", "end": None}
+    pages = [
+        Mock(body={"data": [closed], "metadata": {"next_cursor": "a"}}),
+        Mock(body={"data": [opened], "metadata": {"next_cursor": None}}),
+    ]
+    client.get.side_effect = pages
+    gateway = EnlyzeApiGateway(client)
+    runs = gateway.get_production_runs("m")
+    assert [run.uuid for run in runs] == ["closed", "open"]
+    assert runs[0].end == datetime(2026, 9, 1, 1, tzinfo=UTC)
+    assert [call.args for call in client.get.call_args_list] == [
+        ("/v2/production-runs", {"machine": "m"}),
+        ("/v2/production-runs", {"machine": "m", "cursor": "a"}),
+    ]
+    client.get.side_effect = pages
+    assert gateway.get_open_production_run("m") == runs[1]
+
+
+@pytest.mark.parametrize("metadata", [
+    None, [], "bad", {}, {"next_cursor": ""}, {"next_cursor": 1},
+    {"next_cursor": False}, {"next_cursor": []}, {"next_cursor": {}},
+])
+def test_production_run_invalid_pagination(metadata) -> None:
+    client = Mock()
+    client.get.return_value.body = {"data": [], "metadata": metadata}
+    with pytest.raises(ValueError, match="Invalid production-run response.*next_cursor"):
+        EnlyzeApiGateway(client).get_production_runs("m")
+
+
+@pytest.mark.parametrize("cursors", [["a", "a"], ["a", "b", "a"]])
+def test_production_run_cyclic_pagination(cursors) -> None:
+    client = Mock()
+    client.get.side_effect = [
+        Mock(body={"data": [], "metadata": {"next_cursor": cursor}})
+        for cursor in cursors
+    ]
+    with pytest.raises(ValueError, match="next_cursor has already been followed"):
+        EnlyzeApiGateway(client).get_production_runs("m")
+    assert client.get.call_count == len(cursors)
+
+
+@pytest.mark.parametrize("body", [
+    None, [], {}, {"data": {}}, {"data": [None]},
+    {"data": [dict(uuid="r", machine="wrong", production_order="o",
+                   start="2026-09-03T00:00:00Z", end=None)]},
+    {"data": [dict(uuid="r", machine="m", production_order="o",
+                   start="2026-09-03T00:00:00Z", end="2026-09-02T00:00:00Z")]},
+])
+def test_production_run_malformed_later_page(body) -> None:
+    client = Mock()
+    client.get.side_effect = [
+        Mock(body={"data": [], "metadata": {"next_cursor": "a"}}), Mock(body=body),
+    ]
+    with pytest.raises(ValueError, match="Invalid production-run response on page 2"):
+        EnlyzeApiGateway(client).get_production_runs("m")