Test UI with no visuals (tests #1)

tests/test_ui.py

@@ -0,0 +1,42 @@
+import numpy as np
+import picturedrocks as pr
+try:
+    import scanpy as sc
+    sc.pp
+except AttributeError:
+    sc = sc.api
+import pytest
+import importlib
+
+ipyw_spec = importlib.util.find_spec("ipywidgets")
+
+@pytest.fixture()
+def pauldata():
+    adata = sc.datasets.paul15()
+    pr.read.process_clusts(adata, "paul15_clusters")
+    infoset = pr.markers.makeinfoset(adata, True)
+    sc.pp.normalize_per_cell(adata)
+    sc.pp.log1p(adata)
+    return (adata, infoset)
+
+
+@pytest.mark.skipif(ipyw_spec is None, reason="ipywidgets not installed (optional dependency)")
+def test_empty_visuals(pauldata):
+    adata, infoset = pauldata
+    cife = pr.markers.CIFE(infoset)
+    im = pr.markers.interactive.InteractiveMarkerSelection(adata, cife, [])
+    im.show()
+
+@pytest.mark.skipif(ipyw_spec is None, reason="ipywidgets not installed (optional dependency)")
+def test_tsne_violin(pauldata):
+    adata, infoset = pauldata
+    cife = pr.markers.CIFE(infoset)
+    im = pr.markers.interactive.InteractiveMarkerSelection(adata, cife,["tsne","violin"])
+    im.show()
+
+@pytest.mark.skip(reason="current version runs too slowly")
+def test_umap_violin(pauldata):
+    adata, infoset = pauldata
+    cife = pr.markers.CIFE(infoset)
+    im = pr.markers.interactive.InteractiveMarkerSelection(adata, cife,["tsne","violin"])
+    im.show()