test_inputsplitter: suppress self-deprecation warning

IPython/core/tests/test_inputsplitter.py

@@ -6,9 +6,11 b''
 # Distributed under the terms of the Modified BSD License.
 
 import unittest
+import pytest
 import sys
 
-from IPython.core import inputsplitter as isp
+with pytest.warns(DeprecationWarning, match="inputsplitter"):
+    from IPython.core import inputsplitter as isp
 from IPython.core.inputtransformer import InputTransformer
 from IPython.core.tests.test_inputtransformer import syntax, syntax_ml
 from IPython.testing import tools as tt