Sample code for article - JIRA: (BAEL-1079) Java 8 Streams distinctBy() some property(+ external tools)

2017-08-15 23:48:47 -03:00
parent bcc122b724
commit 7ec1db1be2
8 changed files with 260 additions and 8 deletions
@@ -0,0 +1,32 @@
+package com.baeldung.distinct;
+
+import static org.junit.Assert.assertTrue;
+
+import java.util.List;
+
+import org.eclipse.collections.impl.block.factory.HashingStrategies;
+import org.eclipse.collections.impl.utility.ListIterate;
+import org.junit.Before;
+import org.junit.Test;
+
+public class DistinctWithEclipseCollectionsUnitTest {
+    List<Person> personList;
+
+    @Before
+    public void init() {
+        personList = PersonDataGenerator.getPersonListWithFakeValues();
+    }
+
+    @Test
+    public void whenFilterListByName_thenSizeShouldBe4() {
+        List<Person> personListFiltered = ListIterate.distinct(personList, HashingStrategies.fromFunction(Person::getName));
+        assertTrue(personListFiltered.size() == 4);
+    }
+
+    @Test
+    public void whenFilterListByAge_thenSizeShouldBe2() {
+        List<Person> personListFiltered = ListIterate.distinct(personList, HashingStrategies.fromIntFunction(Person::getAge));
+        assertTrue(personListFiltered.size() == 2);
+    }
+
+}