Unit test to ensure invalid timestamp conversions do not occur

[bwhelan212]

• What new feature is being introduced with this PR?
  Created a unit test function that takes data from validate_timestamp_conversion.csv and prevents invalid timestamp conversion by someone editing the codebase.

Checks

• All tests succeed.
• Unit tests added.
• e2e tests added.
• Documentation updated.

Co-authors: @hankngo @Isaac-G5900

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[berggren]

Thanks for contributing!