Updated Example Code for Vavr Collections (#2472)
* added updated example codes * updated example code StringToCharStream * deleted StringToCharStream.java locally * removed redundant file * added code for apache commons collection SetUtils * refactored example code * added example code for bytebuddy * added example code for PCollections * update pom * refactored tests for PCollections * spring security xml config * spring security xml config * remove redundant comment * example code for apache-shiro * updated example code for Vavr Collections * updated Vavr's Collection example * updated Vavr Collection file
This commit is contained in:
Seun Matt
Zeger Hendrikse
parent
b00a9e61bc
commit
154b59fc8b
@ -30,16 +30,67 @@ import static org.junit.Assert.assertTrue;
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public class CollectionAPIUnitTest {
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@Test
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public void givenEmptyList_whenStacked_thenCorrect() {
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public void givenParams_whenListAPI_thenCorrect() {
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List<String> list
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= List.of("Java", "PHP", "Jquery", "JavaScript", "JShell", "JAVA");
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List list1 = list.drop(2);
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assertFalse(list1.contains("Java") && list1.contains("PHP"));
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List list2 = list.dropRight(2);
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assertFalse(list2.contains("JAVA") && list2.contains("JShell"));
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List list3 = list.dropUntil(s -> s.contains("Shell"));
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assertEquals(list3.size(), 2);
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List list4 = list.dropWhile(s -> s.length() > 0);
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assertTrue(list4.isEmpty());
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List list5 = list.take(1);
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assertEquals(list5.single(), "Java");
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List list6 = list.takeRight(1);
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assertEquals(list6.single(), "JAVA");
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List list7 = list.takeUntil(s -> s.length() > 6);
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assertEquals(list7.size(), 3);
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List list8
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= list.distinctBy( (s1, s2) -> s1.startsWith(s2.charAt(0)+"") ? 0 : 1);
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assertEquals(list8.size(), 2);
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Iterator<List<String>> iterator = list.grouped(2);
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assertEquals(iterator.head().size(), 2);
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Map<Boolean, List<String>> map = list.groupBy(e -> e.startsWith("J"));
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assertEquals(map.size(), 2);
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assertEquals(map.get(false).get().size(), 1);
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assertEquals(map.get(true).get().size(), 5);
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String words = List.of("Boys", "Girls")
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.intersperse("and")
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.reduce((s1, s2) -> s1.concat( " " + s2 ))
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.trim();
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assertEquals(words, "Boys and Girls");
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}
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@Test
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public void givenEmptyList_whenStackAPI_thenCorrect() {
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List<Integer> intList = List.empty();
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List<Integer> anotherList = intList.push(4)
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.push(0);
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Iterator<Integer> iterator = anotherList.iterator();
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List<Integer> intList1 = intList.pushAll(List.rangeClosed(5,10));
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assertEquals(intList1.peek(), Integer.valueOf(10));
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List intList2 = intList1.pop();
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assertEquals(intList2.size(), (intList1.size() - 1) );
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assertEquals(new Integer(0), iterator.next());
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assertEquals(new Integer(4), iterator.next());
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}
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@Test
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@ -61,27 +112,33 @@ public class CollectionAPIUnitTest {
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@Test
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public void givenQueue_whenEnqueued_thenCorrect() {
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Queue<Integer> queue = Queue.of(1, 2, 3);
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Queue<Integer> secondQueue = queue.enqueue(4)
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.enqueue(5);
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Queue<Integer> secondQueue = queue.enqueueAll(List.of(4,5));
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assertEquals(3, queue.size());
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assertEquals(5, secondQueue.size());
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Tuple2<Integer, Queue<Integer>> result = secondQueue.dequeue();
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Integer headValue = result.apply((head, tail) -> head);
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assertEquals(new Integer(1), headValue);
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assertEquals(Integer.valueOf(1), result._1);
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Iterator<Integer> iterator = result.apply((head, tail) -> tail.iterator());
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assertEquals(new Integer(2), iterator.next());
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assertEquals(new Integer(3), iterator.next());
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assertEquals(new Integer(4), iterator.next());
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assertEquals(new Integer(5), iterator.next());
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Queue<Integer> tailQueue = result._2;
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assertFalse(tailQueue.contains(secondQueue.get(0)));
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}
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@Test
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public void givenStream_whenProcessed_thenCorrect() {
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Stream<Integer> s1 = Stream.tabulate(5, (i)-> i + 1);
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assertEquals(s1.get(2).intValue(), 3);
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Stream<Integer> s = Stream.of(2,1,3,4);
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Stream<Tuple2<Integer, Integer>> s2 = s.zip(List.of(7,8,9));
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Tuple2<Integer, Integer> t1 = s2.get(0);
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assertEquals(t1._1().intValue(), 2);
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assertEquals(t1._2().intValue(), 7);
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Stream<Integer> intStream = Stream.iterate(0, i -> i + 1)
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.take(10);
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@ -92,7 +149,6 @@ public class CollectionAPIUnitTest {
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.longValue();
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assertEquals(20, evenSum);
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assertEquals(new Integer(5), intStream.get(5));
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}
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@Test
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@ -102,11 +158,12 @@ public class CollectionAPIUnitTest {
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assertEquals(3, intArray.size());
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assertEquals(2, newArray.size());
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assertEquals(3, newArray.get(1).intValue());
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Array<Integer> array2 = intArray.replace(1, 5);
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assertEquals(array2.get(0).intValue(), 5);
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assertEquals(new Integer(1), intArray.get(0));
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assertEquals(new Integer(2), intArray.get(1));
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assertEquals(new Integer(3), intArray.get(2));
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assertEquals(new Integer(3), newArray.get(1));
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}
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@Test
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@ -117,10 +174,8 @@ public class CollectionAPIUnitTest {
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assertEquals(4, intVector.size());
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assertEquals(4, newVector.size());
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assertEquals(new Integer(1), intVector.get(0));
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assertEquals(new Integer(2), intVector.get(1));
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assertEquals(new Integer(3), intVector.get(2));
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assertEquals(new Integer(6), newVector.get(1));
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assertEquals(2, intVector.get(1).intValue());
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assertEquals(6, newVector.get(1).intValue());
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}
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@Test
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@ -143,28 +198,27 @@ public class CollectionAPIUnitTest {
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assertEquals(3, set.size());
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assertEquals(4, newSet.size());
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assertFalse(set.contains("Yellow"));
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assertTrue(newSet.contains("Yellow"));
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}
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@Test
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public void givenSortedSet_whenIterated_thenCorrect() {
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SortedSet<String> set = TreeSet.of("Red", "Green", "Blue");
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assertEquals("Blue", set.head());
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SortedSet<Integer> intSet = TreeSet.of(1,2,3);
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assertEquals(2, intSet.average().get().intValue());
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Iterator<String> iterator = set.iterator();
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assertEquals("Blue", iterator.next());
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assertEquals("Green", iterator.next());
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assertEquals("Red", iterator.next());
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}
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@Test
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public void givenSortedSet_whenReversed_thenCorrect() {
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SortedSet<String> set = TreeSet.of(Comparator.reverseOrder(), "Green", "Red", "Blue");
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SortedSet<String> reversedSet
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= TreeSet.of(Comparator.reverseOrder(), "Green", "Red", "Blue");
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assertEquals("Red", reversedSet.head());
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Iterator<String> iterator = set.iterator();
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assertEquals("Red", iterator.next());
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assertEquals("Green", iterator.next());
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assertEquals("Blue", iterator.next());
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String str = reversedSet.mkString(" and ");
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assertEquals("Red and Green and Blue", str);
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}
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@Test
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@ -173,27 +227,17 @@ public class CollectionAPIUnitTest {
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.groupBy(i -> i % 2);
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assertEquals(2, map.size());
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Iterator<Tuple2<Integer, List<Integer>>> iterator = map.iterator();
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assertEquals(6, iterator.next()
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._2()
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.size());
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assertEquals(5, iterator.next()
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._2()
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.size());
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assertEquals(6, map.get(0).get().size());
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assertEquals(5, map.get(1).get().size());
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}
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@Test
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public void givenTreeMap_whenIterated_thenCorrect() {
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SortedMap<Integer, String> map = TreeMap.of(3, "Three", 2, "Two", 4, "Four", 1, "One");
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SortedMap<Integer, String> map
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= TreeMap.of(3, "Three", 2, "Two", 4, "Four", 1, "One");
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Iterator<Tuple2<Integer, String>> iterator = map.iterator();
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assertEquals(new Integer(1), iterator.next()
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._1());
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assertEquals(new Integer(2), iterator.next()
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._1());
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assertEquals(new Integer(3), iterator.next()
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._1());
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assertEquals(1, map.keySet().toJavaArray()[0]);
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assertEquals("Four", map.get(4).get());
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}
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@Test
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@ -202,14 +246,13 @@ public class CollectionAPIUnitTest {
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List<Integer> vavrList = List.ofAll(javaList);
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assertEquals(4, vavrList.size());
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assertEquals(new Integer(1), vavrList.head());
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assertEquals(1, vavrList.head().intValue());
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java.util.stream.Stream<Integer> javaStream = javaList.stream();
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Set<Integer> vavrSet = HashSet.ofAll(javaStream);
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assertEquals(4, vavrSet.size());
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assertEquals(new Integer(2), vavrSet.tail()
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.head());
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assertEquals(2, vavrSet.tail().head().intValue());
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}
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@Test
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@ -220,7 +263,7 @@ public class CollectionAPIUnitTest {
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.collect(List.collector());
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assertEquals(4, vavrList.size());
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assertEquals(new Integer(2), vavrList.head());
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assertEquals(2, vavrList.head().intValue());
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}
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@Test
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@ -231,7 +274,7 @@ public class CollectionAPIUnitTest {
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java.util.Map<String, Integer> map = List.of("1", "2", "3")
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.toJavaMap(i -> Tuple.of(i, Integer.valueOf(i)));
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assertEquals(new Integer(2), map.get("2"));
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assertEquals(2, map.get("2").intValue());
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}
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@Test
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@ -240,8 +283,7 @@ public class CollectionAPIUnitTest {
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.collect(Collectors.toSet());
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assertEquals(3, javaSet.size());
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assertEquals(new Integer(1), javaSet.iterator()
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.next());
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assertEquals(1, javaSet.toArray()[0]);
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}
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@Test
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@ -250,7 +292,7 @@ public class CollectionAPIUnitTest {
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.asJavaMutable();
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javaList.add(4);
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assertEquals(new Integer(4), javaList.get(3));
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assertEquals(4, javaList.get(3).intValue());
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}
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@Test(expected = UnsupportedOperationException.class)
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@ -258,7 +300,7 @@ public class CollectionAPIUnitTest {
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java.util.List<Integer> javaList = List.of(1, 2, 3)
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.asJava();
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assertEquals(new Integer(3), javaList.get(2));
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assertEquals(3, javaList.get(2).intValue());
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javaList.add(4);
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}
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