Which is the expected workflow for "Test-Driven Development"?

Write a new fating unit test, write the new functional code to fix the test, verify that the test passes, and then refactor the code.

Write a new test, validate with the CI system, and then write the new functional code.

Validate with the G system, write the new functional code, and then verify that the test passes.

Write a new failing unit test, write the new functional code to fix the test, and then verify that the test passes.