More uniform binding of Numpy arrays (#381)

- Introduce a standard way to bind numpy arrays: py::array_t<T> and
.noconvert() on the argument
- Take py::array_t by value since it's just a small wrapper
- Update bindings

python/tests/test_Cluster.py

@@ -162,3 +162,21 @@ def test_3x3_reduction():
 
 
 
+
+
+@pytest.mark.parametrize(
+    "cluster_type, n_pixels",
+    [(_aare.Cluster3x3i, 9), (_aare.Cluster2x2i, 4)],
+)
+def test_cluster_constructor_requires_exact_data_length(cluster_type, n_pixels):
+    """Data must hold exactly one value per pixel"""
+    for bad in (
+        np.ones(n_pixels - 1, dtype=np.int32),
+        np.ones(n_pixels + 1, dtype=np.int32),
+        np.ones((n_pixels, 1), dtype=np.int32),
+    ):
+        with pytest.raises(ValueError, match=f"{n_pixels} values"):
+            cluster_type(0, 0, bad)
+
+    cluster = cluster_type(0, 0, np.arange(n_pixels, dtype=np.int32))
+    assert (cluster.data.ravel() == np.arange(n_pixels)).all()

python/tests/test_ClusterVector.py

@@ -146,7 +146,7 @@ def test_masking_requires_c_contiguous_array():
     mask = np.array([True, False, True, False], dtype=bool)[::2]
     assert not mask.flags.c_contiguous
 
-    with pytest.raises(TypeError):
+    with pytest.raises(ValueError, match="C-contiguous"):
         cv(mask)
 
 

python/tests/test_Pedestal.py

@@ -172,7 +172,7 @@ def test_pedestal_rejects_noncontiguous_inputs(dtype, input_name, layout):
         invalid = np.ones((4, 6), dtype=input_dtype)[:2, :3][:, ::-1]
     assert not invalid.flags.c_contiguous
 
-    with pytest.raises(TypeError):
+    with pytest.raises(ValueError, match="C-contiguous"):
         if input_name == "push_frame":
             pedestal.push(invalid)
         elif input_name == "threshold_frame":
@@ -192,9 +192,8 @@ def test_pedestal_rejects_inputs_with_wrong_ndim(dtype, input_name, shape):
     threshold = np.full((2, 3), 10, dtype=dtype)
     input_dtype = dtype if input_name == "threshold" else np.uint16
     invalid = np.ones(shape, dtype=input_dtype)
-    name = "Threshold" if input_name == "threshold" else "Frame"
 
-    with pytest.raises(ValueError, match=f"{name} must be 2-dimensional"):
+    with pytest.raises(ValueError):
         if input_name == "push_frame":
             pedestal.push(invalid)
         elif input_name == "threshold_frame":