Class FactorialTest

java.lang.Object

topics.divideconquer.factorial.FactorialTest

@DisplayName("Factorial Paradigms")
class FactorialTest
extends Object

Validation Suite for Factorial

Ensures mathematical parity across iterative and recursive approaches, validates base cases, and confirms execution stability up to the 64-bit long ceiling (20!).

Author:

vicegd

Constructor Summary

Constructors

Constructor	Description
FactorialTest()

Method Summary

Modifier and Type	Method	Description
(package private) static void	setup()
(package private) void	shouldCalculateIterativeFactorial()
(package private) void	shouldCalculateRecursiveFactorial()
(package private) void	shouldHandleIterativeBaseCase()
(package private) void	shouldHandleLongCeiling()
(package private) void	shouldHandleRecursiveBaseCase()
(package private) void	shouldRejectNegativeInputs()

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

FactorialTest

FactorialTest()

Method Details

setup

@BeforeAll
static void setup()

shouldCalculateIterativeFactorial

@Test
@DisplayName("Iterative: Calculate standard factorial (6!)")
void shouldCalculateIterativeFactorial()

shouldHandleIterativeBaseCase

@Test
@DisplayName("Iterative: Handle mathematical base case (0!)")
void shouldHandleIterativeBaseCase()

shouldCalculateRecursiveFactorial

@Test
@DisplayName("Recursive: Calculate standard factorial (6!)")
void shouldCalculateRecursiveFactorial()

shouldHandleRecursiveBaseCase

@Test
@DisplayName("Recursive: Handle mathematical base case (0!)")
void shouldHandleRecursiveBaseCase()

shouldHandleLongCeiling

@Test
@DisplayName("Both: Safely calculate maximum 64-bit bounds (20!)")
void shouldHandleLongCeiling()

shouldRejectNegativeInputs

@Test
@DisplayName("Both: Reject negative inputs safely")
void shouldRejectNegativeInputs()