From 8ef39f81b42964da6914eeaa1259c18f4435cdd0 Mon Sep 17 00:00:00 2001
From: DOHA <dohae243@gmail.com>
Date: Tue, 16 Oct 2018 23:04:15 +0300
Subject: [PATCH] string to byte array

---
 .../base64/StringToByteArrayUnitTest.java     | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 java-strings/src/test/java/com/baeldung/java8/base64/StringToByteArrayUnitTest.java

diff --git a/java-strings/src/test/java/com/baeldung/java8/base64/StringToByteArrayUnitTest.java b/java-strings/src/test/java/com/baeldung/java8/base64/StringToByteArrayUnitTest.java
new file mode 100644
index 0000000000..5bb97e111a
--- /dev/null
+++ b/java-strings/src/test/java/com/baeldung/java8/base64/StringToByteArrayUnitTest.java
@@ -0,0 +1,60 @@
+package com.baeldung.java8.base64;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.io.UnsupportedEncodingException;
+import java.nio.charset.StandardCharsets;
+import java.util.Arrays;
+import java.util.Base64;
+
+import javax.xml.bind.DatatypeConverter;
+
+import org.junit.Test;
+
+public class StringToByteArrayUnitTest {
+
+    @Test
+    public void whenConvertStringToByteArrayUsingStringClass_thenOk() {
+        final String originalInput = "test input";
+        byte[] result = originalInput.getBytes();
+        System.out.println(Arrays.toString(result));
+        
+        assertEquals(originalInput.length(), result.length);
+    }
+
+    @Test
+    public void givenCharset_whenConvertStringToByteArrayUsingStringClass_thenOk() throws UnsupportedEncodingException {
+        final String originalInput = "test input";
+        byte[] result = originalInput.getBytes(StandardCharsets.UTF_16);
+        System.out.println(Arrays.toString(result));
+        
+        assertTrue(originalInput.length() < result.length);
+    }
+    
+    @Test
+    public void whenConvertStringToByteArrayUsingBase64Decoder_thenOk() {
+        final String originalInput = "dGVzdCBpbnB1dA==";
+        byte[] result = Base64.getDecoder().decode(originalInput);
+        
+        assertEquals("test input", new String(result));
+    }
+    
+    @Test
+    public void whenConvertStringToByteArrayUsingDatatypeConverter_thenOk() {
+        final String originalInput = "dGVzdCBpbnB1dA==";
+        byte[] result = DatatypeConverter.parseBase64Binary(originalInput);
+        
+        assertEquals("test input", new String(result));
+    }    
+    
+    @Test
+    public void whenConvertStringToByteArray_thenOk(){
+        String originalInput = "7465737420696E707574";
+        byte[] result = DatatypeConverter.parseHexBinary(originalInput);
+        System.out.println(Arrays.toString(result));
+        
+        assertEquals("test input", new String(result));
+    }
+    
+}