Added Weather API

roadcast/tests/test_openweather_client.py

@@ -0,0 +1,70 @@
+import os
+import builtins
+import pytest
+from unittest.mock import patch, MagicMock
+
+from openweather_client import fetch_road_risk, fetch_weather, _get_api_key
+
+class DummyResp:
+    def __init__(self, json_data, status=200):
+        self._json = json_data
+        self.status = status
+    def raise_for_status(self):
+        if self.status >= 400:
+            raise Exception("HTTP error")
+    def json(self):
+        return self._json
+
+def make_get(mock_json, status=200):
+    return MagicMock(return_value=DummyResp(mock_json, status=status))
+
+def test_get_api_key_prefers_explicit(monkeypatch):
+    # explicit key should be returned
+    assert _get_api_key("EXPLICIT") == "EXPLICIT"
+    monkeypatch.delenv("OPENWEATHER_API_KEY", raising=False)
+    monkeypatch.delenv("OPENWEATHER_KEY", raising=False)
+    assert _get_api_key(None) is None
+
+def test_fetch_road_risk_direct_score(monkeypatch):
+    # roadrisk returns direct numeric field
+    resp_json = {"road_risk_score": 2.5, "detail": "ok"}
+    with patch("openweather_client.requests.get", make_get(resp_json)):
+        data, features = fetch_road_risk(1.0, 2.0, api_key="TESTKEY")
+    assert data["road_risk_score"] == 2.5
+    assert features["road_risk_score"] == 2.5
+
+def test_fetch_road_risk_numeric_fields(monkeypatch):
+    # roadrisk returns top-level numeric fields, expect average of contributors
+    resp_json = {"precipitation": 4.0, "visibility": 2000, "other": 3}
+    with patch("openweather_client.requests.get", make_get(resp_json)):
+        data, features = fetch_road_risk(1.0, 2.0, api_key="TESTKEY")
+    # contributors list contains precipitation and visibility and maybe others; check road_risk_score numeric
+    assert "road_risk_score" in features
+    assert features["road_risk_score"] > 0
+
+def test_fetch_road_risk_fallback_to_weather(monkeypatch):
+    # roadrisk returns empty dict; requests.get called first for roadrisk then for weather.
+    seq = [
+        DummyResp({}, status=200),  # roadrisk empty
+        DummyResp({
+            "main": {"temp": 10, "humidity": 80},
+            "wind": {"speed": 7.5},
+            "visibility": 3000,
+            "weather": [{"main": "Rain"}]
+        }, status=200)
+    ]
+    # iterate returns next DummyResp
+    def side_effect(url, params=None, timeout=None):
+        return seq.pop(0)
+    with patch("openweather_client.requests.get", side_effect=side_effect):
+        data, features = fetch_road_risk(1.0, 2.0, api_key="TESTKEY")
+    # derived heuristic: rain=1.0 + wind>6 => 0.5 + visibility<5000 =>1.0 => total 2.5
+    assert abs(features["road_risk_score"] - 2.5) < 1e-6
+    assert features["weather_main"] == "Rain" or features.get("weather_main") == "Rain"
+
+def test_fetch_road_risk_missing_api_key(monkeypatch):
+    # ensure no env var present
+    monkeypatch.delenv("OPENWEATHER_API_KEY", raising=False)
+    monkeypatch.delenv("OPENWEATHER_KEY", raising=False)
+    with pytest.raises(RuntimeError):
+        fetch_road_risk(1.0, 2.0)