adding more nodes

tests/node_tests/immerse_detail.py

@@ -0,0 +1,42 @@
+import numpy as np
+import pytest
+from tests.node_tests._shared import make_field
+
+
+def test_output_shape_matches_overview():
+    from backend.nodes.immerse_detail import ImmerseDetail
+
+    node = ImmerseDetail()
+    overview = make_field(shape=(64, 64))
+    # Detail must have matching pixel size (smaller physical area)
+    detail = make_field(shape=(16, 16), xreal=0.25e-6, yreal=0.25e-6)
+    (combined,) = node.process(overview, detail, blend="replace")
+    assert combined.data.shape == overview.data.shape
+
+
+def test_detail_larger_returns_overview():
+    from backend.nodes.immerse_detail import ImmerseDetail
+
+    node = ImmerseDetail()
+    overview = make_field(shape=(32, 32))
+    # Detail larger than overview after resampling
+    detail = make_field(shape=(64, 64))
+    (combined,) = node.process(overview, detail, blend="replace")
+    # Should return the overview unchanged
+    assert np.array_equal(combined.data, overview.data)
+
+
+def test_replace_mode():
+    from backend.nodes.immerse_detail import ImmerseDetail
+
+    node = ImmerseDetail()
+    overview_data = np.zeros((64, 64))
+    detail_data = np.ones((16, 16)) * 5.0
+    overview = make_field(data=overview_data)
+    # Match pixel size so detail stays 16x16 (smaller than 64x64)
+    detail = make_field(data=detail_data, xreal=0.25e-6, yreal=0.25e-6)
+    (combined,) = node.process(overview, detail, blend="replace")
+    # After immersion, some pixels should now equal 5.0
+    assert np.any(combined.data == 5.0), "Detail should modify some pixels in replace mode"
+    # But not all pixels changed
+    assert combined.data.shape == (64, 64)