Fixes broken unit test - test_evadb_client

[Tanish0019]

Problem

Unit test suite is broken. (Last run)
Broken test - CMDClientTest::test_evadb_client
Error: RuntimeError: There is no current event loop in thread 'MainThread'
The test runs fine when run individually but fails when whole suite is run together because other asyncio tests update the asyncio loop settings and policies.

Solution

Update test class to extend from IsolatedAsyncioTestCase which provides better isolation when running multiple asyncio test units.

[github-actions]

👋 Hello @Tanish0019, thanks for submitting a EVA DB PR 🙏 To allow your work to be integrated as seamlessly as possible, we advise you to:

• ✅ Verify that your PR is up-to-date with georgia-tech-db/eva master branch. If your PR is behind you can update your code by clicking the 'Update branch' button or by running git pull and git merge master locally.
• ✅ Verify that all EVA DB Continuous Integration (CI) checks are passing.
• ✅ Reduce changes to the absolute minimum required for your bug fix or feature addition.

[Tanish0019]

Hi @xzdandy, I was just playing around with the project and caught this quick fix so thought about contributing back. Currently the build is failing in the Install Evadb package step unrelated to my change. Do you know if this is a known issue or we can trigger a retry maybe? Thanks!