Move IPYKERNEL_CELL_NAME from tox to pytest

This allows pytest to be executed directly without tox and without manual setting of the variable. Tox works well as before.
jupyter · Nov 9, 2021 · e32310e · e32310e
1 parent 1a87c0b
commit e32310e
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diff --git a/nbclient/tests/conftest.py b/nbclient/tests/conftest.py
@@ -0,0 +1,6 @@
+import os
+
+# This is important for ipykernel to show the same string
+# instead of randomly generated file names in outputs.
+# See: https://github.com/ipython/ipykernel/blob/360685c67c71cd33691c72c1e9e88d23a88f4021/ipykernel/compiler.py#L50-L55
+os.environ["IPYKERNEL_CELL_NAME"] = "<IPY-INPUT>"
diff --git a/tox.ini b/tox.ini
@@ -39,7 +39,6 @@ commands =
 # disable Python's hash randomization for tests that stringify dicts, etc
 setenv =
     PYTHONHASHSEED = 0
-    IPYKERNEL_CELL_NAME = <IPY-INPUT>
 passenv = *
 basepython =
     py36: python3.6