add test for creating mask hydro buffer

test/vectors/test_create_mask_hydro_buffer.py

@@ -0,0 +1,44 @@
+import os
+import shutil
+from pathlib import Path
+
+import geopandas as gpd
+from pyproj import CRS
+from shapely.geometry import MultiPolygon
+
+from lidro.create_virtual_point.vectors.create_mask_hydro_buffer import (
+    create_mask_hydro_buffer,
+)
+
+TMP_PATH = Path("./tmp/create_virtual_point/vectors/create_mask_hydro_buffer/")
+
+file_mask = "./data/merge_mask_hydro/MaskHydro_merge.geojson"
+output = Path("./tmp/create_virtual_point/vectors/create_mask_hydro_buffer/MaskHydro_merge_buffer.geojson")
+
+
+def setup_module(module):
+    if TMP_PATH.is_dir():
+        shutil.rmtree(TMP_PATH)
+    os.makedirs(TMP_PATH)
+
+
+def test_create_mask_hydro_buffer_default():
+    # Parameters
+    buffer = 2
+    crs = CRS.from_epsg(2154)
+
+    result = create_mask_hydro_buffer(file_mask, buffer, crs)
+
+    # Save the result to GeoJSON
+    d = {"nom": "mask_hydro_merge_buffer", "geometry": [result]}
+    gdf = gpd.GeoDataFrame(d, crs=crs)
+    gdf.to_file(output, driver="GeoJSON", crs=crs)
+
+    assert Path(output).exists()
+
+    gdf = gpd.read_file(output)
+
+    assert not gdf.empty  # GeoDataFrame shouldn't empty
+    assert gdf.crs.to_string() == crs  # CRS is identical
+
+    assert all(isinstance(geom, MultiPolygon) for geom in gdf.geometry)  # All geometry should MultiPolygone