added generator test

lite/tests/semantic_segmentation/test_annotation.py

@@ -1,6 +1,10 @@
 import numpy as np
 import pytest
-from valor_lite.semantic_segmentation import Bitmask, Segmentation
+from valor_lite.semantic_segmentation import (
+    Bitmask,
+    Segmentation,
+    generate_segmentation,
+)
 
 
 def test_bitmask():
@@ -78,3 +82,25 @@ def test_segmentation():
             predictions=[],
         )
     assert "missing predictions" in str(e)
+
+
+def test_generate_segmentation():
+
+    segmentation = generate_segmentation(
+        datum_uid="uid1",
+        number_of_unique_labels=3,
+        mask_height=2,
+        mask_width=3,
+    )
+
+    assert segmentation.uid == "uid1"
+    assert segmentation.shape == (2, 3)
+    assert segmentation.size == 6
+
+    assert len(segmentation.groundtruths) == 3
+    assert all(gt.mask.dtype == np.bool_ for gt in segmentation.groundtruths)
+    assert all(gt.mask.shape == (2, 3) for gt in segmentation.groundtruths)
+
+    assert len(segmentation.predictions)
+    assert all(pd.mask.dtype == np.bool_ for pd in segmentation.predictions)
+    assert all(pd.mask.shape == (2, 3) for pd in segmentation.predictions)