Define create_module()/exec_module() in AssertionRewritingHook to avo…

…id ImportWarning

    __________ ERROR collecting testing/python/show_fixtures_per_test.py ___________
    /usr/lib/python3.10/site-packages/py/_path/local.py:704: in pyimport
        __import__(modname)
    <frozen importlib._bootstrap>:1026: in _find_and_load
        ???
    <frozen importlib._bootstrap>:1005: in _find_and_load_unlocked
        ???
    <frozen importlib._bootstrap>:681: in _load_unlocked
        ???
    E   ImportWarning: AssertionRewritingHook.exec_module() not found; falling back to load_module()
    !!!!!!!!!!!!!!!!!!! Interrupted: 59 errors during collection !!!!!!!!!!!!!!!!!!!
    =========================== 59 error in 3.65 seconds ===========================

changelog/8236.bugfix.rst

@@ -0,0 +1,2 @@
+Define ``create_module()`` and ``exec_module()`` methods in
+``AssertionRewritingHook`` to get rid of ``ImportWarning`` on Python 3.10+.

src/_pytest/assertion/rewrite.py

@@ -308,6 +308,12 @@ def load_module(self, name):
             raise
         return sys.modules[name]
 
+    def create_module(self, spec):
+        return self.load_module(spec.name)
+
+    def exec_module(self, module):
+        pass
+
     def is_package(self, name):
         try:
             fd, fn, desc = self._imp_find_module(name)