Fix #710

Description:

This pull request introduces an enhancement to the ConfigManagerTest, specifically the testBasicReplacement method. Previously, this test method relied on manual verification of test outcomes through console output, which is not in line with automated testing best practices. To address this, the proposed changes refactor the test to utilize AtomicReference for capturing changes in property values and assert these changes using JUnit Jupiter's Assertions.assertEquals. This modification ensures that the test outcomes can be automatically and precisely validated, thus improving the overall reliability and efficiency of our testing process.

Key Changes:

• Utilized AtomicReference to capture changes in property values within the test.
• Replaced manual console output verification with Assertions.assertEquals to automatically verify the expected behavior.