tree to check reports generated in correct place

Author: ruaridhg

tox.ini

@@ -14,9 +14,10 @@ extras = testing
 allowlist_externals =
     cp
     ls
+    tree
 commands =
     cp -R {toxinidir}/src/napari_matplotlib/tests/baseline {envdir}/baseline
     ls {toxinidir}/src/napari_matplotlib/tests/baseline
     python -c 'from skimage import data; data.brain()'
     python -m pytest --mpl --mpl-results-path=./reports -v --color=yes --cov=napari_matplotlib --cov-report=xml
-    ls {toxinidir}/reports
+    tree {toxinidir}