added conopy

api/tests/test_api.py

@@ -17,6 +17,7 @@ def test_openapi_contains_expected_paths() -> None:
     paths = response.json()["paths"]
     assert "/api/v1/terrain/profile" in paths
     assert "/api/v1/terrain/los" in paths
+    assert "/api/v1/terrain/fresnel-slice" in paths
     assert "/api/v1/link/budget" in paths
     assert "/api/v1/coverage" in paths
     assert "/api/v1/status/data" in paths
@@ -100,6 +101,28 @@ def test_los_endpoint_returns_obstruction_summary_fields() -> None:
     )
 
 
+def test_fresnel_slice_endpoint_returns_geojson() -> None:
+    response = client.post(
+        "/api/v1/terrain/fresnel-slice",
+        json={
+            "tx": {"lat": 59.935, "lon": 30.305, "height_agl": 30},
+            "rx": {"lat": 59.945, "lon": 30.325, "height_agl": 2},
+            "frequency_mhz": 433,
+            "fresnel_fraction": 0.6,
+            "include_buildings": False,
+            "include_canopy": False,
+            "samples": 16,
+        },
+    )
+    assert response.status_code == 200
+    data = response.json()
+    assert data["path_geojson"]["type"] == "LineString"
+    assert data["fresnel_geojson"]["type"] == "Feature"
+    assert data["fresnel_geojson"]["geometry"]["type"] in {"Polygon", "MultiPolygon"}
+    assert data["buildings_geojson"]["type"] == "FeatureCollection"
+    assert len(data["profile"]) == 16
+
+
 def test_manual_link_budget_endpoint() -> None:
     response = client.post(
         "/api/v1/link/budget",