Java/src/test/java/com/thealgorithms/bitmanipulation/GenerateSubsetsTest.java at master · TheAlgorithms/Java · GitHub

Name: Java/src/test/java/com/thealgorithms/bitmanipulation/GenerateSubsetsTest.java at master · TheAlgorithms/Java · GitHub
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packagecom.thealgorithms.bitmanipulation;

importstaticjava.util.Collections.singletonList;
importstaticorg.junit.jupiter.api.Assertions.assertEquals;

importjava.util.ArrayList;
importjava.util.Arrays;
importjava.util.List;
importorg.junit.jupiter.api.Test;

classGenerateSubsetsTest {

@Test
voidtestGenerateSubsetsWithTwoElements() {
int[] set = {1, 2};
List<List<Integer>> expected = newArrayList<>();
expected.add(newArrayList<>());
expected.add(singletonList(1));
expected.add(singletonList(2));
expected.add(Arrays.asList(1, 2));

List<List<Integer>> result = GenerateSubsets.generateSubsets(set);
assertEquals(expected, result);
 }

@Test
voidtestGenerateSubsetsWithOneElement() {
int[] set = {3};
List<List<Integer>> expected = newArrayList<>();
expected.add(newArrayList<>());
expected.add(singletonList(3));

List<List<Integer>> result = GenerateSubsets.generateSubsets(set);
assertEquals(expected, result);
 }

@Test
voidtestGenerateSubsetsWithThreeElements() {
int[] set = {4, 5, 6};
List<List<Integer>> expected = newArrayList<>();
expected.add(newArrayList<>());
expected.add(singletonList(4));
expected.add(singletonList(5));
expected.add(Arrays.asList(4, 5));
expected.add(singletonList(6));
expected.add(Arrays.asList(4, 6));
expected.add(Arrays.asList(5, 6));
expected.add(Arrays.asList(4, 5, 6));

List<List<Integer>> result = GenerateSubsets.generateSubsets(set);
assertEquals(expected, result);
 }
}