JAVA-8365: Split or move core-java-io-conversions module

core-java-modules/core-java-io-conversions-2/src/test/java/com/baeldung/stringtoinputstream/JavaXToInputStreamUnitTest.java

@@ -0,0 +1,44 @@
+package com.baeldung.stringtoinputstream;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+
+import org.apache.commons.io.IOUtils;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.io.CharSource;
+
+public class JavaXToInputStreamUnitTest {
+    protected final Logger logger = LoggerFactory.getLogger(getClass());
+
+    // tests - String - InputStream
+
+    @Test
+    public final void givenUsingPlainJava_whenConvertingStringToInputStream_thenCorrect() throws IOException {
+        final String initialString = "text";
+        final InputStream targetStream = new ByteArrayInputStream(initialString.getBytes());
+
+        IOUtils.closeQuietly(targetStream);
+    }
+
+    @Test
+    public final void givenUsingGuava_whenConvertingStringToInputStream_thenCorrect() throws IOException {
+        final String initialString = "text";
+        final InputStream targetStream = CharSource.wrap(initialString).asByteSource(StandardCharsets.UTF_8).openStream();
+
+        IOUtils.closeQuietly(targetStream);
+    }
+
+    @Test
+    public final void givenUsingCommonsIO_whenConvertingStringToInputStream_thenCorrect() throws IOException {
+        final String initialString = "text";
+        final InputStream targetStream = IOUtils.toInputStream(initialString);
+
+        IOUtils.closeQuietly(targetStream);
+    }
+
+}