Test encode of null and empty array with an offset

Author: aherbert

src/test/java/org/apache/commons/codec/binary/Base16Test.java

@@ -141,6 +141,9 @@ public void testEmptyBase16() {
         byte[] result = new Base16().encode(empty);
         assertEquals("empty Base16 encode", 0, result.length);
         assertEquals("empty Base16 encode", null, new Base16().encode(null));
+        result = new Base16().encode(empty, 0, 1);
+        assertEquals("empty Base16 encode with offset", 0, result.length);
+        assertEquals("empty Base16 encode with offset", null, new Base16().encode(null));
 
         empty = new byte[0];
         result = new Base16().decode(empty);

src/test/java/org/apache/commons/codec/binary/Base32Test.java

@@ -240,6 +240,25 @@ public void testCodec200() {
         assertNotNull(codec);
     }
 
+    /**
+     * Test encode and decode of empty byte array.
+     */
+    @Test
+    public void testEmptyBase32() {
+        byte[] empty = new byte[0];
+        byte[] result = new Base32().encode(empty);
+        assertEquals("empty Base32 encode", 0, result.length);
+        assertEquals("empty Base32 encode", null, new Base32().encode(null));
+        result = new Base32().encode(empty, 0, 1);
+        assertEquals("empty Base32 encode with offset", 0, result.length);
+        assertEquals("empty Base32 encode with offset", null, new Base32().encode(null));
+
+        empty = new byte[0];
+        result = new Base32().decode(empty);
+        assertEquals("empty Base32 decode", 0, result.length);
+        assertEquals("empty Base32 encode", null, new Base32().decode((byte[]) null));
+    }
+
     @Test
     public void testRandomBytes() {
         for (int i = 0; i < 20; i++) {

src/test/java/org/apache/commons/codec/binary/Base64Test.java

@@ -400,6 +400,9 @@ public void testEmptyBase64() {
         byte[] result = Base64.encodeBase64(empty);
         assertEquals("empty base64 encode", 0, result.length);
         assertEquals("empty base64 encode", null, Base64.encodeBase64(null));
+        result = new Base64().encode(empty, 0, 1);
+        assertEquals("empty base64 encode", 0, result.length);
+        assertEquals("empty base64 encode", null, new Base64().encode(null, 0, 1));
 
         empty = new byte[0];
         result = Base64.decodeBase64(empty);