diff --git a/tests/test_pointcloud.py b/tests/test_pointcloud.py
index 8a7ac1d8..9823489c 100644
--- a/tests/test_pointcloud.py
+++ b/tests/test_pointcloud.py
@@ -1,5 +1,6 @@
 """Test module for point cloud functionalities."""
 
+import pytest
 import geopandas as gpd
 import numpy as np
 import rasterio as rio
@@ -10,7 +11,7 @@
 
 
 class TestPointCloud:
-    def test_grid_pc__chull(self) -> None:
+    def test_grid_pc(self) -> None:
         """Test point cloud gridding."""
 
         # 1/ Check gridding interpolation falls back exactly on original raster
@@ -105,3 +106,11 @@ def test_grid_pc__chull(self) -> None:
         ifarchull, jfarchull = list(zip(*far_in_chull))
 
         assert all(~np.isfinite(gridded_pc[ifarchull, jfarchull]))
+
+        # 3/ Errors
+        with pytest.raises(TypeError, match="Input grid coordinates must be 1D arrays.*"):
+            Raster.from_pointcloud_regular(pc, grid_coords=(1, "lol"))  # type: ignore
+        with pytest.raises(ValueError, match="Grid coordinates must be regular*"):
+            grid_coords[0][0] += 1
+            Raster.from_pointcloud_regular(pc, grid_coords=grid_coords)  # type: ignore
+