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def setUpClass(cls):
super(DataLakeTestSpec, cls).setUpClass()
# Skip these tests unless connected to data lake.
if not client_context.is_data_lake:
raise unittest.SkipTest('Not connected to Atlas Data Lake')
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@ShaneHarvey ShaneHarvey Dec 22, 2020

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Explanation:

  1. The super class' setUpClass method calls client_knobs.enable().
  2. Here we raise SkipTest
  3. tearDownClass is never called because setUpClass raised an error.
  4. The side-effects of client_knobs are still present.

The change here fixes the bug by raising SkipTest before calling setUpClass.

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@prashantmital prashantmital left a comment

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Nice work diagnosing this!

@ShaneHarvey ShaneHarvey merged commit 2eecf52 into mongodb:master Dec 22, 2020
@ShaneHarvey ShaneHarvey deleted the PYTHON-2474-real-fix branch December 22, 2020 01:54
ShaneHarvey added a commit that referenced this pull request Dec 22, 2020
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2 participants