Add coverage for Java 8's Base64 utility class.

godfreyduke · godfreyduke · commit a14638c2022f · 2016-10-31T16:35:15.000-07:00
diff --git a/koans/app/config/PathToEnlightenment.xml b/koans/app/config/PathToEnlightenment.xml
@@ -52,5 +52,6 @@
         <suite class="AboutLambdas"/>
         <suite class="AboutStreams"/>
         <suite class="AboutMultipleInheritance"/>
+        <suite class="AboutBase64"/>
     </package>
 </packages>
diff --git a/koans/src/java8/AboutBase64.java b/koans/src/java8/AboutBase64.java
@@ -0,0 +1,40 @@
+package java8;
+
+import com.sandwich.koan.Koan;
+
+import java.util.Base64;
+import java.io.UnsupportedEncodingException;
+
+import static com.sandwich.koan.constant.KoanConstants.__;
+import static com.sandwich.util.Assert.assertEquals;
+
+public class AboutBase64 {
+
+    private final String plainText = "lorem ipsum";
+    private final String encodedText = "bG9yZW0gaXBzdW0=";
+
+    @Koan
+    public void base64Encoding() {
+        try {
+            // Encode the plainText
+            // This uses the basic Base64 encoding scheme but there are corresponding
+            // getMimeEncoder and getUrlEncoder methods available if you require a
+            // different format/Base64 Alphabet 
+            assertEquals(encodedText, Base64.getEncoder().encodeToString(__.getBytes("utf-8")));
+        } catch (UnsupportedEncodingException ex) {}
+    }
+
+    @Koan
+    public void base64Decoding() {
+        // Decode the Base64 encodedText
+        // This uses the basic Base64 decoding scheme but there are corresponding
+        // getMimeDecoder and getUrlDecoder methods available if you require a
+        // different format/Base64 Alphabet
+        byte[] decodedBytes = Base64.getDecoder().decode(__);
+        try {
+            String decodedText = new String(decodedBytes, "utf-8");
+            assertEquals(plainText, decodedText);
+        } catch (UnsupportedEncodingException ex) {}
+    }
+
+}
