added land

api/tests/test_landcover.py

@@ -0,0 +1,62 @@
+from pathlib import Path
+
+import numpy as np
+import rasterio
+from rasterio.transform import from_origin
+
+from app.core.geo import PathPoint
+from app.core.landcover import landcover_path, worldcover_class
+
+
+def write_raster(path: Path, data: np.ndarray, nodata: float = -9999.0) -> None:
+    transform = from_origin(30.0, 60.0, 0.01, 0.01)
+    with rasterio.open(
+        path,
+        "w",
+        driver="GTiff",
+        height=data.shape[0],
+        width=data.shape[1],
+        count=1,
+        dtype=data.dtype,
+        crs="EPSG:4326",
+        transform=transform,
+        nodata=nodata,
+    ) as dataset:
+        dataset.write(data, 1)
+
+
+def test_worldcover_class_mapping() -> None:
+    assert worldcover_class(10) == "tree_cover"
+    assert worldcover_class(50) == "built_up"
+    assert worldcover_class(255) == "unknown"
+
+
+def test_landcover_path_segments_and_vegetation_depth(tmp_path: Path) -> None:
+    landcover_dir = tmp_path / "landcover"
+    canopy_dir = tmp_path / "canopy"
+    landcover_dir.mkdir()
+    canopy_dir.mkdir()
+    write_raster(
+        landcover_dir / "worldcover.tif",
+        np.array([[10, 10, 50, 50]], dtype="uint8"),
+        nodata=0,
+    )
+    write_raster(
+        canopy_dir / "canopy.tif",
+        np.array([[12.0, 14.0, 0.0, 0.0]], dtype="float32"),
+    )
+    points = [
+        PathPoint(lat=59.995, lon=30.005, distance_m=0),
+        PathPoint(lat=59.995, lon=30.015, distance_m=10),
+        PathPoint(lat=59.995, lon=30.025, distance_m=20),
+        PathPoint(lat=59.995, lon=30.035, distance_m=30),
+    ]
+
+    result = landcover_path(points, landcover_dir, canopy_dir)
+
+    assert result.vegetation_depth_m == 20
+    assert len(result.segments) == 2
+    assert result.segments[0].class_name == "tree_cover"
+    assert result.segments[0].forest_type == "unknown"
+    assert result.segments[0].canopy_height_m == 13.0
+    assert result.segments[1].class_name == "built_up"