Clean up test cases.
Start each testcase by creating a notebook, and assign a unique name to the notebook, and remove the notebook at the end of the testcase.
This is so that we do not have Untitled*pynb lingering around at the end of running test suite.
Clean up test cases. Start each testcase by creating a notebook, and assign a unique name to the notebook, and remove the notebook at the end of the testcase. This is so that we do not have Untitled*pynb lingering around at the end of running test suite.