Pomodoro Timer failing tests when timer reaches 00:00

Hey everyone,
I have been working on building the Pomodoro timer for the Front-End library certificate, and have come across some errors that I am really having a hard time figuring out. The tests that I am having difficulty completing are in the #Timer section (user stories 13 - 15) The display in my program reads 00:00, and then it switches from session to break (or vice versa), but the tests do not recognize that the string has changed. One of the errors that I get states “Expects ‘session’ to not equal ‘session’”. I feel like it has something to do with when the app re-renders, but I’m really not sure. I put my project into a CodeSandbox, if anyone has any insight, I would greatly appreciate it.

Here is a link to my project in CodeSandbox.io - https://codesandbox.io/s/pomodoro-w2vt6?fontsize=14
Here is the same code on GitHub, if you prefer to clone from there - https://github.com/jeffn12/pomodoro-timer.git

Thanks!!

P.S. I have not included any audio yet, so it should fail the final three tests.