[Bug 1950335] Re: FTBFS 2.0.1+dfsg1-2 DeprecationWarning: There is no current event loop

[Athos Ribeiro]

Fix forwarded to Debian at https://salsa.debian.org/python-
team/packages/python-werkzeug/-/merge_requests/2

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https://bugs.launchpad.net/bugs/1950335

Title:
  FTBFS 2.0.1+dfsg1-2 DeprecationWarning: There is no current event loop

Status in python-werkzeug package in Ubuntu:
  New

Bug description:
  python-werkzeug fails to build from source for Python 3.10 as per
  https://launchpadlibrarian.net/567964431/buildlog_ubuntu-jammy-
  amd64.python-werkzeug_2.0.1+dfsg1-2_BUILDING.txt.gz

  =================================== FAILURES ===================================
  ___________________________ test_local_stack_asyncio ___________________________

      @pytest.mark.skipif(
          sys.version_info < (3, 7),
          reason="Locals are not task local in Python 3.6",
      )
      def test_local_stack_asyncio():
          ls = local.LocalStack()
          ls.push(1)
      
          async def task():
              ls.push(1)
              assert len(ls._local.stack) == 2
      
  >       loop = asyncio.get_event_loop()
  E       DeprecationWarning: There is no current event loop

  tests/test_local.py:121: DeprecationWarning
  _______________________________ test_proxy_await _______________________________

      def test_proxy_await():
          async def get():
              return 1
      
          _, p = _make_proxy(get())
      
          async def main():
              return await p
      
  >       out = asyncio.get_event_loop().run_until_complete(main())
  E       DeprecationWarning: There is no current event loop

  tests/test_local.py:574: DeprecationWarning
  _______________________________ test_proxy_aiter _______________________________

      def test_proxy_aiter():
          class Example:
              value = 3
      
              def __aiter__(self):
                  return self
      
              async def __anext__(self):
                  if self.value:
                      self.value -= 1
                      return self.value
      
                  raise StopAsyncIteration
      
          _, p = _make_proxy(Example())
      
          async def main():
              out = []
      
              async for v in p:
                  out.append(v)
      
              return out
      
  >       out = asyncio.get_event_loop().run_until_complete(main())
  E       DeprecationWarning: There is no current event loop

  tests/test_local.py:602: DeprecationWarning
  _______________________ test_proxy_async_context_manager _______________________

      def test_proxy_async_context_manager():
          class Example:
              value = 2
      
              async def __aenter__(self):
                  self.value += 1
                  return self
      
              async def __aexit__(self, exc_type, exc_val, exc_tb):
                  self.value -= 1
      
          _, p = _make_proxy(Example())
      
          async def main():
              async with p:
                  assert p.value == 3
      
              assert p.value == 2
              return True
      
  >       assert asyncio.get_event_loop().run_until_complete(main())
  E       DeprecationWarning: There is no current event loop

  tests/test_local.py:626: DeprecationWarning
  =========================== short test summary info ============================
  FAILED tests/test_local.py::test_local_stack_asyncio - DeprecationWarning: Th...
  FAILED tests/test_local.py::test_proxy_await - DeprecationWarning: There is n...
  FAILED tests/test_local.py::test_proxy_aiter - DeprecationWarning: There is n...
  FAILED tests/test_local.py::test_proxy_async_context_manager - DeprecationWar...
  =========== 4 failed, 757 passed, 1 skipped, 39 deselected in 6.44s ============

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