JAVA-1470 Move 10 articles to libraries-4 module

libraries-4/src/test/java/com/baeldung/eclipsecollections/ZipUnitTest.java

@@ -0,0 +1,33 @@
+package com.baeldung.eclipsecollections;
+
+import org.eclipse.collections.api.list.MutableList;
+import org.eclipse.collections.api.tuple.Pair;
+import org.eclipse.collections.impl.factory.Lists;
+import org.eclipse.collections.impl.tuple.Tuples;
+
+import org.assertj.core.api.Assertions;
+import org.junit.Before;
+import org.junit.Test;
+
+public class ZipUnitTest {
+
+    MutableList<Pair<String, String>> expectedPairs;
+
+    @SuppressWarnings("unchecked")
+    @Before
+    public void setup() {
+        Pair<String, String> pair1 = Tuples.pair("1", "Porsche");
+        Pair<String, String> pair2 = Tuples.pair("2", "Volvo");
+        Pair<String, String> pair3 = Tuples.pair("3", "Toyota");
+        expectedPairs = Lists.mutable.of(pair1, pair2, pair3);
+    }
+
+    @Test
+    public void whenZip_thenCorrect() {
+        MutableList<String> numbers = Lists.mutable.with("1", "2", "3", "Ignored");
+        MutableList<String> cars = Lists.mutable.with("Porsche", "Volvo", "Toyota");
+        MutableList<Pair<String, String>> pairs = numbers.zip(cars);
+
+        Assertions.assertThat(pairs).containsExactlyElementsOf(this.expectedPairs);
+    }
+}