"Exploring Edge Cases for a Horoscope Determination Function Based on Birthdates"

T

hinking about edge cases for a function that calculates a horoscope based on a birthdate entails evaluating unusual or extreme possibilities that the function should handle. Here are some examples of possible edge cases:

1. **Dates near the cusp:** Ensure that the function correctly assigns the right sign based on the time of birth for individuals born on the cusp between two zodiac signs (i.e., around the transition dates between two signs).

2. **Leap year handling:** Validate how the function handles February 29th for leap years, ensuring no errors or inaccuracies are produced.

3. **Birth date before to the establishment of the current zodiac system:** Consider how the function handles birthdates prior to the present zodiac system (e.g., prior to the adoption of the Gregorian calendar in 1582 or before the establishment of the current zodiac system).