split node tests into standalone files

tests/node_tests/test_mask_draw.py

@@ -0,0 +1,40 @@
+import json
+import numpy as np
+from tests.node_tests._shared import make_field
+
+
+def test_draw_mask():
+    from backend.nodes.mask_draw import DrawMask
+    node = DrawMask()
+
+    field = make_field(data=np.zeros((32, 32), dtype=np.float64))
+    overlays = []
+    DrawMask._broadcast_overlay_fn = lambda nid, data: overlays.append(data)
+    DrawMask._current_node_id = "test"
+
+    mask_paths = [{"size": 5, "points": [{"x": 0.2, "y": 0.5}, {"x": 0.8, "y": 0.5}]}]
+
+    mask, = node.process(field, pen_size=2, invert=False, mask_paths=json.dumps(mask_paths))
+    assert mask.dtype == np.uint8
+    assert mask.shape == (32, 32)
+    assert mask[16, 16] == 255
+    assert mask[14, 16] == 255
+    assert mask[0, 0] == 0
+
+    assert len(overlays) == 1
+    assert overlays[0]["kind"] == "mask_paint"
+    assert overlays[0]["section_title"] == "Mask"
+    assert overlays[0]["image"].startswith("data:image/png;base64,")
+    assert overlays[0]["image_width"] == field.xres
+    assert overlays[0]["image_height"] == field.yres
+    assert overlays[0]["invert"] is False
+
+    inverted, = node.process(field, pen_size=2, invert=True, mask_paths=json.dumps(mask_paths))
+    assert inverted[16, 16] == 0
+    assert inverted[0, 0] == 255
+    assert overlays[-1]["invert"] is True
+
+    cleared, = node.process(field, pen_size=12, invert=False, mask_paths="[]")
+    assert np.count_nonzero(cleared) == 0
+
+    DrawMask._broadcast_overlay_fn = None