cleanup work

core-java/src/test/java/org/baeldung/java/CoreJavaCollectionsUnitTest.java

@@ -10,7 +10,7 @@ import org.junit.Test;
 
 import com.google.common.collect.ImmutableList;
 
-public class CoreJavaUnitTest {
+public class CoreJavaCollectionsUnitTest {
 
     // tests -
 

core-java/src/test/java/org/baeldung/java/CoreJavaIoUnitTest.java

@@ -0,0 +1,14 @@
+package org.baeldung.java;
+
+import org.junit.Test;
+
+public class CoreJavaIoUnitTest {
+
+    // tests -
+
+    @Test
+    public final void whenIteratingAFile_thenCorrect() {
+        //
+    }
+
+}