Java Bubble Sort

public class BubbleSort {
    public static void sort(int[] array) {
        for (int i = 0; i < array.length - 1; i++) {
            for (int j = 0; j < array.length - 1; j++) {
                if (array[j] > array[j + 1]) {
                    int temp = array[j];
                    array[j] = array[j + 1];
                    array[j + 1] = temp;
                }
            }
        }
    }
}

import org.junit.jupiter.api.Test;

import static org.assertj.core.api.Assertions.assertThat;

class BubbleSortTest {
    @Test
    void testEmptyArray() {
        int[] array = {};
        BubbleSort.sort(array);
        assertThat(array).isEmpty();
    }

    @Test
    void testSingleElement() {
        int[] array = {5};
        BubbleSort.sort(array);
        assertThat(array).isEqualTo(new int[]{5});
    }

    @Test
    void testTwoElements() {
        int[] array = {2, 1};
        BubbleSort.sort(array);
        assertThat(array).isEqualTo(new int[]{1, 2});
    }

    @Test
    void testThreeElements() {
        int[] array = {3, 1, 2};
        BubbleSort.sort(array);
        assertThat(array).isEqualTo(new int[]{1, 2, 3});
    }

    @Test
    void testFourElements() {
        int[] array = {3, 1, 4, 2};
        BubbleSort.sort(array);
        assertThat(array).isEqualTo(new int[]{1, 2, 3, 4});
    }

    @Test
    void testFiveElements() {
        int[] array = {3, 4, 2, 5, 1};
        BubbleSort.sort(array);
        assertThat(array).isEqualTo(new int[]{1, 2, 3, 4, 5});
    }

    @Test
    void testSortedArray() {
        int[] array = {1, 2, 3, 4, 5};
        BubbleSort.sort(array);
        assertThat(array).isEqualTo(new int[]{1, 2, 3, 4, 5});
    }

    @Test
    void testReversedArray() {
        int[] array = {5, 4, 3, 2, 1};
        BubbleSort.sort(array);
        assertThat(array).isEqualTo(new int[]{1, 2, 3, 4, 5});
    }
}