cleanup work and starting new tests

core-java/src/test/java/org/baeldung/java/io/JavaInputStreamToXUnitTest.java

@@ -1,4 +1,4 @@
-package org.baeldung.java;
+package org.baeldung.java.io;
 
 import static org.apache.commons.lang3.RandomStringUtils.randomAlphabetic;
 import static org.hamcrest.Matchers.equalTo;
@@ -25,7 +25,7 @@ import com.google.common.base.Charsets;
 import com.google.common.io.CharStreams;
 import com.google.common.io.InputSupplier;
 
-public class CoreJavaIoUnitTest {
+public class JavaInputStreamToXUnitTest {
     protected final Logger logger = LoggerFactory.getLogger(getClass());
     private static final int DEFAULT_SIZE = 150000000;
 

core-java/src/test/java/org/baeldung/java/io/JavaXToInputStreamUnitTest.java

@@ -0,0 +1,41 @@
+package org.baeldung.java.io;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.Reader;
+
+import org.apache.commons.io.IOUtils;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.io.CharSource;
+
+@SuppressWarnings("unused")
+public class JavaXToInputStreamUnitTest {
+    protected final Logger logger = LoggerFactory.getLogger(getClass());
+
+    @Test
+    public void givenUsingPlainJava_whenConvertingStringToInputStream_thenCorrect() throws IOException {
+        final String initialString = "text";
+        final InputStream targetStream = new ByteArrayInputStream(initialString.getBytes());
+        final byte[] buffer = new byte[targetStream.available()];
+        targetStream.read(buffer);
+        final String targetString = new String(buffer);
+    }
+
+    @Test
+    public void givenUsingGuava_whenConvertingStringToInputStream_thenCorrect() throws IOException {
+        final String initialString = "text";
+        final CharSource source = CharSource.wrap(initialString);
+        final Reader targetStream = source.openStream();
+    }
+
+    @Test
+    public void givenUsingCommonsIO_whenConvertingStringToInputStream_thenCorrect() throws IOException {
+        final String initialString = "text";
+        final InputStream targetStream = IOUtils.toInputStream(initialString);
+    }
+
+}