Example Code for BAEL-1048 (#2316)

* 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
2017-07-27 21:59:45 +01:00
parent 7ffd8ecb12
commit 0a631ac326
2 changed files with 97 additions and 0 deletions
@@ -0,0 +1,91 @@
+package com.baeldung.pcollections;
+
+import org.junit.Test;
+import org.pcollections.*;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class PCollectionsUnitTest {
+
+    @Test
+    public void whenEmpty_thenCreateEmptyHashPMap() {
+        HashPMap<String, String> pmap = HashTreePMap.empty();
+        assertEquals(pmap.size(), 0);
+    }
+
+    @Test
+    public void givenKeyValue_whenSingleton_thenCreateNonEmptyHashPMap() {
+        HashPMap<String, String> pmap1 = HashTreePMap.singleton("key1", "value1");
+        assertEquals(pmap1.size(), 1);
+    }
+
+    @Test
+    public void givenExistingHashMap_whenFrom_thenCreateHashPMap() {
+        Map map = new HashMap();
+        map.put("mkey1", "mval1");
+        map.put("mkey2", "mval2");
+
+        HashPMap<String, String> pmap2 = HashTreePMap.from(map);
+        assertEquals(pmap2.size(), 2);
+    }
+
+    @Test
+    public void whenHashPMapMethods_thenPerformOperations() {
+
+        HashPMap<String, String> pmap = HashTreePMap.empty();
+        pmap = pmap.plus("key1", "value1");
+        assertEquals(pmap.size(), 1);
+
+        Map map = new HashMap();
+        map.put("key2", "val2");
+        map.put("key3", "val3");
+        pmap = pmap.plusAll(map);
+
+        assertEquals(pmap.size(), 3);
+
+        pmap = pmap.minus("key1");
+        assertFalse(pmap.containsKey("key1"));
+
+        pmap = pmap.minusAll(map.keySet());
+        assertEquals(pmap.size(), 0);
+
+    }
+
+    @Test
+    public void whenTreePVectorMethods_thenPerformOperations() {
+        TreePVector pVector = TreePVector.empty();
+
+        pVector = pVector.plus("e1");
+        pVector = pVector.plusAll(Arrays.asList("e2", "e3", "e4"));
+        assertEquals(4, pVector.size());
+
+        TreePVector pSub = pVector.subList(0, 2);
+        assertTrue(pSub.contains("e1") && pSub.contains("e2"));
+
+        TreePVector pVW = (TreePVector) pVector.with(0, "e10");
+        assertEquals(pVW.get(0), "e10");
+
+        pVector = pVector.minus("e1");
+        TreePVector pV1 = pVector.minusAll(Arrays.asList("e2", "e3"));
+        assertEquals(pV1.size(), 1);
+    }
+
+    @Test
+    public void whenMapPSetMethods_thenPerformOperations() {
+
+        MapPSet pSet = HashTreePSet.empty()
+                .plusAll(Arrays.asList("e1","e2","e3","e4"));
+        assertEquals(pSet.size(), 4);
+
+        pSet = pSet.minus("e4");
+        assertFalse(pSet.contains("e4"));
+
+    }
+
+}