BAEL-3200 Error handling with Spring AMQP

libraries/src/test/java/com/baeldung/distinct/DistinctWithEclipseCollectionsUnitTest.java

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+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);
+    }
+
+}

libraries/src/test/java/com/baeldung/distinct/DistinctWithJavaFunctionUnitTest.java

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+package com.baeldung.distinct;
+
+import static org.junit.Assert.assertTrue;
+import static com.baeldung.distinct.DistinctWithJavaFunction.distinctByKey;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.junit.Before;
+import org.junit.Test;
+
+public class DistinctWithJavaFunctionUnitTest {
+    List<Person> personList;
+
+    @Before
+    public void init() {
+        personList = PersonDataGenerator.getPersonListWithFakeValues();
+    }
+
+    @Test
+    public void whenFilterListByName_thenSizeShouldBe4() {
+        List<Person> personListFiltered = personList.stream().filter(distinctByKey(p -> p.getName())).collect(Collectors.toList());
+        assertTrue(personListFiltered.size() == 4);
+    }
+
+    @Test
+    public void whenFilterListByAge_thenSizeShouldBe2() {
+        List<Person> personListFiltered = personList.stream().filter(distinctByKey(p -> p.getAge())).collect(Collectors.toList());
+        assertTrue(personListFiltered.size() == 2);
+    }
+
+    @Test
+    public void whenFilterListWithDefaultDistinct_thenSizeShouldBe5() {
+        List<Person> personListFiltered = personList.stream().distinct().collect(Collectors.toList());
+        assertTrue(personListFiltered.size() == 5);
+    }
+
+}

libraries/src/test/java/com/baeldung/distinct/DistinctWithStreamexUnitTest.java

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+package com.baeldung.distinct;
+
+import static org.junit.Assert.assertTrue;
+
+import java.util.List;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import one.util.streamex.StreamEx;
+
+public class DistinctWithStreamexUnitTest {
+    List<Person> personList;
+
+    @Before
+    public void init() {
+        personList = PersonDataGenerator.getPersonListWithFakeValues();
+    }
+
+    @Test
+    public void whenFilterListByName_thenSizeShouldBe4() {
+        List<Person> personListFiltered = StreamEx.of(personList).distinct(Person::getName).toList();
+        assertTrue(personListFiltered.size() == 4);
+    }
+
+    @Test
+    public void whenFilterListByAge_thenSizeShouldBe2() {
+        List<Person> personListFiltered = StreamEx.of(personList).distinct(Person::getAge).toList();
+        assertTrue(personListFiltered.size() == 2);
+    }
+
+}

libraries/src/test/java/com/baeldung/distinct/DistinctWithVavrUnitTest.java

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+package com.baeldung.distinct;
+
+import static org.junit.Assert.assertTrue;
+
+import java.util.List;
+
+import org.junit.Before;
+import org.junit.Test;
+
+public class DistinctWithVavrUnitTest {
+    List<Person> personList;
+
+    @Before
+    public void init() {
+        personList = PersonDataGenerator.getPersonListWithFakeValues();
+    }
+
+    @Test
+    public void whenFilterListByName_thenSizeShouldBe4() {
+        List<Person> personListFiltered = io.vavr.collection.List.ofAll(personList).distinctBy(Person::getName).toJavaList();
+        assertTrue(personListFiltered.size() == 4);
+    }
+
+    @Test
+    public void whenFilterListByAge_thenSizeShouldBe2() {
+        List<Person> personListFiltered = io.vavr.collection.List.ofAll(personList).distinctBy(Person::getAge).toJavaList();
+        assertTrue(personListFiltered.size() == 2);
+    }
+
+}

libraries/src/test/java/com/baeldung/distinct/PersonDataGenerator.java

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+package com.baeldung.distinct;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class PersonDataGenerator {
+
+    public static List<Person> getPersonListWithFakeValues() {
+        // @formatter:off
+        return Arrays.asList(
+            new Person(20, "Jhon", "jhon@test.com"), 
+            new Person(20, "Jhon", "jhon1@test.com"), 
+            new Person(20, "Jhon", "jhon2@test.com"), 
+            new Person(21, "Tom", "Tom@test.com"), 
+            new Person(21, "Mark", "Mark@test.com"),
+            new Person(20, "Julia", "jhon@test.com"));
+        // @formatter:on
+    }
+}