5. Construct a Python Unit Test 200-901 Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A function get_interfaces() returns a list of interface names. The test needs to verify that the list contains 'GigabitEthernet0/1'. Which assertion method is appropriate?

   • Aself.assertIn('GigabitEthernet0/1', get_interfaces())
   • Bself.assertEqual(get_interfaces(), 'GigabitEthernet0/1')
   • Cself.assertIsNotNone(get_interfaces())
   • Dself.assertTrue(get_interfaces() == ['GigabitEthernet0/1'])
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2. 12foundation · easy

   Which of the following is a recommended practice for organizing tests in a Python project?

   • APlace all test functions in a single large file to simplify execution.
   • BCreate a separate tests package with modules that mirror the structure of the application code.
   • CKeep test modules in the same directory as the source code to reduce imports.
   • DName test files with a .test extension to distinguish them from source files.
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4. 13foundation · easy

   You want to assert that the value returned by a function is in a list of allowed values. Which unittest assertion method is most appropriate?

   • AassertEqual
   • BassertTrue
   • CassertIs
   • DassertIn
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5. 14expert · hard

   A project has a large test suite that takes a long time to run. The team wants to run only the tests that are affected by recent code changes to speed up the feedback loop. They are using a version control system. Which approach is most effective?

   • ARun the entire test suite every time, but in parallel to reduce wall-clock time.
   • BUse unittest discovery to run all tests in the directory containing the changed code.
   • CUse a test coverage tool to identify which tests cover the changed code and run only those tests.
   • DManually identify which tests are likely affected by the changes and run those.
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6. 15foundation · easy

   What is the purpose of a TestSuite in the unittest framework?

   • ATo group multiple test cases or test methods so they can be executed together.
   • BTo provide a base class for all test classes.
   • CTo automatically discover tests in a directory.
   • DTo define the setup and teardown for a group of tests.
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