PAM-based Test Experiences Error During Tear Down Phase

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Introduction

In this article, we will discuss a bug that occurs during the tear down phase of a test class for the Python REP in iRODS 5. The error is related to the PAM-based test and is caused by the tear down logic not handling the core.py file. This article will provide a detailed explanation of the issue, its causes, and potential solutions.

Bug Report

The following error occurs while tearing down a test class for the Python REP:

<?xml version="1.0" encoding="UTF-8"?>
<testsuite name="unittest.suite._ErrorHolder-20250425200740" tests="1" file="unittest/suite.py" time="0.000" timestamp="0001-01-01T00:00:00" failures="0" errors="1" skipped="0">
        <testcase classname="" name="tearDownClass (irods.test.test_pam_password_authentication.test_configurations)" time="0.000" timestamp="0001-01-01T00:00:00" file="scripts/irods/test/test_pam_password_authentication.py" line="569">
                <error type="AssertionError" message=""><![CDATA[Traceback (most recent call last):
  File "/var/lib/irods/scripts/irods/test/test_pam_password_authentication.py", line 153, in tearDownClass
    with session.make_session_for_existing_admin() as admin_session:
  File "/var/lib/irods/scripts/irods/test/session.py", line 35, in make_session_for_existing_admin
    return IrodsSession(env_dict, test.settings.PREEXISTING_ADMIN_PASSWORD, False)
  File "/var/lib/irods/scripts/irods/test/session.py", line 101, in __init__
    self.assert_icommand('iinit', 'STDOUT_SINGLELINE',
  File "/var/lib/irods/scripts/irods/test/session.py", line 162, in assert_icommand
    return assert_command(*args, **kwargs)
  File "/var/lib/irods/scripts/irods/test/command.py", line 76, in assert_command
    return _assert_helper(*args, should_fail=False, **kwargs)
  File "/var/lib/irods/scripts/irods/test/command.py", line 104, in _assert_helper
    assert result
AssertionError
]]></error>

Causes of the Issue

The tear down logic in the test class does not handle the core.py file, which is the root cause of the issue. The core.py file is a part of the iRODS test suite and is used to initialize the test environment. However, the tear down logic only handles the core.re file, which is a part of the iRODS test suite, but it does not handle the core.py file.

Potential Solutions

To resolve this issue, the tear down logic needs to be modified to handle the core.py file. This can be achieved by adding a new method to the tear down logic that handles the core.py file. The new method should be called after the core.re file has been handled.

Here is an example of how the modified tear down logic could look:

defClass(self):
    # Handle core.re file
    self.tearDownCoreRe()
    
    # Handle core.py file
    self.tearDownCorePy()

In the above example, the tearDownClass method is modified to call two new methods: tearDownCoreRe and tearDownCorePy. The tearDownCoreRe method handles the core.re file, and the tearDownCorePy method handles the core.py file.

Conclusion

In conclusion, the PAM-based test experiences an error during the tear down phase due to the tear down logic not handling the core.py file. This issue can be resolved by modifying the tear down logic to handle the core.py file. The modified tear down logic should call a new method that handles the core.py file after handling the core.re file.

Recommendations

To avoid this issue in the future, it is recommended to:

  • Always handle all files in the test environment, including the core.py file.
  • Modify the tear down logic to handle the core.py file.
  • Test the modified tear down logic thoroughly to ensure that it works correctly.

Introduction

In our previous article, we discussed a bug that occurs during the tear down phase of a test class for the Python REP in iRODS 5. The error is related to the PAM-based test and is caused by the tear down logic not handling the core.py file. In this article, we will provide a Q&A section to help you better understand the issue and its causes.

Q: What is the PAM-based test?

A: The PAM-based test is a type of test that uses the Pluggable Authentication Module (PAM) to authenticate users. In the context of iRODS, the PAM-based test is used to test the authentication mechanism of the iRODS system.

Q: What is the tear down phase of a test class?

A: The tear down phase of a test class is the process of cleaning up the test environment after each test has been executed. This includes closing any open connections, deleting any temporary files, and restoring the original state of the system.

Q: Why is the tear down logic not handling the core.py file?

A: The tear down logic is not handling the core.py file because it is not designed to handle it. The core.py file is a part of the iRODS test suite and is used to initialize the test environment. However, the tear down logic only handles the core.re file, which is a part of the iRODS test suite, but it does not handle the core.py file.

Q: How can I modify the tear down logic to handle the core.py file?

A: To modify the tear down logic to handle the core.py file, you need to add a new method to the tear down logic that handles the core.py file. This method should be called after the core.re file has been handled. Here is an example of how the modified tear down logic could look:

defClass(self):
    # Handle core.re file
    self.tearDownCoreRe()
    
    # Handle core.py file
    self.tearDownCorePy()

Q: What are the potential consequences of not handling the core.py file?

A: If the core.py file is not handled, it can cause issues with the test environment, such as:

  • Temporary files not being deleted
  • Open connections not being closed
  • Original state of the system not being restored

These issues can lead to incorrect test results and can make it difficult to debug the test environment.

Q: How can I avoid this issue in the future?

A: To avoid this issue in the future, you should:

  • Always handle all files in the test environment, including the core.py file.
  • Modify the tear down logic to handle the core.py file.
  • Test the modified tear down logic thoroughly to ensure that it works correctly.

By following these recommendations, you can ensure that your test environment is properly cleaned up after each test, and you can avoid issues like the one described in this article.

Conclusion

In conclusion, the PAM-based test experiences an error during the tear down phase due to the tear down logic not handling the core.py file. This issue can be resolved by modifying the tear down logic to handle the core.py file. We hope that this Q&A section has helped you better understand the issue and its causes.