work on java io tests

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

@@ -35,6 +35,11 @@ public class JavaFileIntegrationTest {
         FileUtils.touch(new File("src/test/resources/newFile_commonsio.txt"));
     }
 
+    @Test
+    public final void givenUsingGuava_whenCreatingFile_thenCorrect() throws IOException {
+        com.google.common.io.Files.touch(new File("src/test/resources/newFile_guava.txt"));
+    }
+
     // move a file
 
     @Test

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

@@ -0,0 +1,46 @@
+package org.baeldung.java.io;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.io.StringReader;
+
+import org.apache.commons.io.IOUtils;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.io.CharSource;
+import com.google.common.io.CharStreams;
+
+@SuppressWarnings("unused")
+public class JavaReaderToXUnitTest {
+    protected final Logger logger = LoggerFactory.getLogger(getClass());
+    private static final int DEFAULT_SIZE = 1500000;
+
+    // tests - Reader to String
+
+    @Test
+    public void givenUsingPlainJava_whenConvertingReaderIntoString_thenCorrect() throws IOException {
+        final Reader initialReader = new StringReader("text");
+
+        final char[] mediationArray = new char["text".length()];
+        initialReader.read(mediationArray);
+        initialReader.close();
+        final String targetString = new String(mediationArray);
+    }
+
+    @Test
+    public void givenUsingGuava_whenConvertingReaderIntoString_thenCorrect() throws IOException {
+        final Reader initialReader = CharSource.wrap("Google Guava v.17.0").openStream();
+        final String targetString = CharStreams.toString(initialReader);
+        initialReader.close();
+    }
+
+    @Test
+    public void givenUsingCommonsIo_whenConvertingReaderIntoString_thenCorrect() throws IOException {
+        final Reader initialReader = new StringReader("Apache Commons IO 2.4");
+        final String targetString = IOUtils.toString(initialReader);
+        initialReader.close();
+    }
+
+}