import static org.junit.jupiter.api.Assertions.*;

import org.junit.jupiter.api.Test;

public class FibLastDigitTest {
	@Test
	void testFibonacci0() {
		assertEquals(0, FibLastDigit.lastDigitNaive(0));
		assertEquals(0, FibLastDigit.lastDigitOptimized(0));
	}

	@Test
	void testFibonacci1() {
		assertEquals(1, FibLastDigit.lastDigitNaive(1));
		assertEquals(2, FibLastDigit.lastDigitNaive(3));
		assertEquals(1, FibLastDigit.lastDigitOptimized(1));
		assertEquals(2, FibLastDigit.lastDigitOptimized(3));
	}

	@Test
	void testFibonacci40() {
		assertEquals(5, FibLastDigit.lastDigitNaive(40));
		assertEquals(5, FibLastDigit.lastDigitOptimized(40));
		assertEquals(9, FibLastDigit.lastDigitOptimized(331));
		assertEquals(5, FibLastDigit.lastDigitOptimized(327305));
//		assertEquals(1, Fibonacci.fib_optimized1(2));
//		assertEquals(2, Fibonacci.fib_optimized1(3));
//		assertEquals(3, Fibonacci.fib_optimized1(4));
//		assertEquals(102334155, Fibonacci.fib_optimized1(40));
	}

}