JAVA-1470 Move 10 articles to libraries-4 module

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

@@ -0,0 +1,30 @@
+package com.baeldung.eclipsecollections;
+
+import static org.junit.Assert.assertEquals;
+
+import org.eclipse.collections.api.tuple.Pair;
+import org.eclipse.collections.impl.map.mutable.UnifiedMap;
+import org.eclipse.collections.impl.tuple.Tuples;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class ForEachPatternUnitTest {
+
+    @SuppressWarnings("unchecked")
+    @Test
+    public void whenInstantiateAndChangeValues_thenCorrect() {
+        Pair<Integer, String> pair1 = Tuples.pair(1, "One");
+        Pair<Integer, String> pair2 = Tuples.pair(2, "Two");
+        Pair<Integer, String> pair3 = Tuples.pair(3, "Three");
+
+        UnifiedMap<Integer, String> map = UnifiedMap.newMapWith(pair1, pair2, pair3);
+
+        for (int i = 0; i < map.size(); i++) {
+            map.put(i + 1, "New Value");
+        }
+
+        for (int i = 0; i < map.size(); i++) {
+            Assert.assertEquals("New Value", map.get(i + 1));
+        }
+    }
+}