Skip stderr checks in nbval (#358)

* Add conftest

* temporarily disable snapshot test

* Add init file

* move conftest, fix up deprecated flags

* Add the conftest file properly

* pull back everything but stderr

* make it a tuple

* fix various hook issues

* bring back snapshots

* revert typos

Author: IAlibay

.gitignore

@@ -36,6 +36,8 @@ doc/build
 
 # example files
 doc/source/examples/**/*.*
+!doc/source/examples/conftest.py
+!doc/source/examples/__init__.py
 !doc/source/examples/**/*.ipynb
 !doc/source/examples/**/*.rst
 !doc/source/examples/**/*.gif

doc/source/examples/__init__.py

@@ -0,0 +1,6 @@
+# type: ignore
+
+
+def pytest_collectstart(collector):
+    if collector.fspath and collector.fspath.ext == ".ipynb":
+        collector.skip_compare += ("stderr",)

doc/source/examples/conftest.py

@@ -2,3 +2,4 @@
 mypy_path = doc/source/scripts/
 exclude =
     conf.py
+    conftest.py

mypy.ini

@@ -1,5 +1,5 @@
 [pytest]
-addopts = --nbval --current-env --sanitize-with ./sanitize_output.cfg
+addopts = --nbval --nbval-current-env --nbval-sanitize-with ./sanitize_output.cfg
 testpaths =
     ../doc/source/examples/analysis/volumetric/
     ../doc/source/examples/analysis/custom_parallel_analysis.ipynb