Test 3: Testing main.py output...
SUCCESS: main.py prints the correct message!
Output was: Calculator ready!
Add 5 + 3 = 8
Subtract 5 - 3 = 2
Multiply 5 * 3 = 15
Divide 6 / 3 = 2.0
Divide 5 / 0 = Error: Division by zero is not allowed
Main output test passed!