adding more nodes

tests/node_tests/laplace_interpolation.py

@@ -0,0 +1,39 @@
+import numpy as np
+import pytest
+from tests.node_tests._shared import make_field
+from backend.nodes.helpers import bool_to_mask
+
+
+def test_laplace_fills_hole():
+    from backend.nodes.laplace_interpolation import LaplaceInterpolation
+
+    node = LaplaceInterpolation()
+    data = np.ones((32, 32)) * 5.0
+    mask = np.zeros((32, 32), dtype=bool)
+    mask[10:20, 10:20] = True
+    data[mask] = 0.0  # hole
+    field = make_field(data=data)
+    result, = node.process(field, bool_to_mask(mask), 200)
+    # Filled region should be close to surrounding value of 5.0
+    assert result.data[15, 15] > 3.0
+
+
+def test_laplace_no_mask_unchanged():
+    from backend.nodes.laplace_interpolation import LaplaceInterpolation
+
+    node = LaplaceInterpolation()
+    field = make_field(shape=(32, 32))
+    mask = bool_to_mask(np.zeros((32, 32), dtype=bool))
+    result, = node.process(field, mask, 100)
+    assert np.allclose(result.data, field.data)
+
+
+def test_laplace_preserves_shape():
+    from backend.nodes.laplace_interpolation import LaplaceInterpolation
+
+    node = LaplaceInterpolation()
+    field = make_field(shape=(48, 64))
+    mask = np.zeros((48, 64), dtype=bool)
+    mask[20:30, 20:40] = True
+    result, = node.process(field, bool_to_mask(mask), 50)
+    assert result.data.shape == (48, 64)