ArrayLeftRotationTest.java

packagecom.thealgorithms.others;

importstaticorg.junit.jupiter.api.Assertions.assertArrayEquals;

importorg.junit.jupiter.api.Test;

classArrayLeftRotationTest {

@Test
voidtestForOneElement() {
int[] arr = {3};
int[] result = ArrayLeftRotation.rotateLeft(arr, 3);
assertArrayEquals(arr, result);
 }

@Test
voidtestForZeroStep() {
int[] arr = {3, 1, 5, 8, 6};
int[] result = ArrayLeftRotation.rotateLeft(arr, 0);
assertArrayEquals(arr, result);
 }

@Test
voidtestForEqualSizeStep() {
int[] arr = {3, 1, 5, 8, 6};
int[] result = ArrayLeftRotation.rotateLeft(arr, 5);
assertArrayEquals(arr, result);
 }

@Test
voidtestForLowerSizeStep() {
int[] arr = {3, 1, 5, 8, 6};
intn = 2;
int[] expected = {5, 8, 6, 3, 1};
int[] result = ArrayLeftRotation.rotateLeft(arr, n);
assertArrayEquals(expected, result);
 }

@Test
voidtestForHigherSizeStep() {
int[] arr = {3, 1, 5, 8, 6};
intn = 7;
int[] expected = {5, 8, 6, 3, 1};
int[] result = ArrayLeftRotation.rotateLeft(arr, n);
assertArrayEquals(expected, result);
 }

@Test
voidtestForEmptyArray() {
int[] arr = {};
int[] result = ArrayLeftRotation.rotateLeft(arr, 3);
assertArrayEquals(arr, result);
 }
}