Adds contains method

Author: patrickfav

CHANGELOG

@@ -1,5 +1,10 @@
 # Releases
 
+## v0.4.2
+
+* add check method if transformer supports inplace
+* adds contains method
+
 ## v0.4.1
 
 * add bitAt() utility

src/main/java/at/favre/lib/bytes/Bytes.java

@@ -856,6 +856,16 @@ public boolean isReadOnly() {
         return false;
     }
 
+    /**
+     * Checks if given byte value is contained in internal array
+     *
+     * @param target a primitive {@code byte} value
+     * @return true if this Bytes instance contains the specified element
+     */
+    public boolean contains(byte target) {
+        return indexOf(target) != -1;
+    }
+
     /**
      * Returns the index of the first appearance of the value {@code target} in
      * {@code array}.

src/test/java/at/favre/lib/bytes/BytesMiscTest.java

@@ -112,6 +112,15 @@ public void testIsEmpty() throws Exception {
         assertFalse(Bytes.from(example_bytes_seven).isEmpty());
     }
 
+    @Test
+    public void containsTest() throws Exception {
+        assertEquals(false, Bytes.allocate(0).contains((byte) 0xFD));
+        assertEquals(true, Bytes.allocate(128).contains((byte) 0x00));
+        assertEquals(true, Bytes.from(example_bytes_seven).contains((byte) 0xFD));
+        assertEquals(true, Bytes.from(example_bytes_seven).contains((byte) 0xAF));
+        assertEquals(false, Bytes.from(example_bytes_seven).contains((byte) 0x00));
+    }
+
     @Test
     public void indexOfByte() throws Exception {
         assertEquals(-1, Bytes.allocate(0).indexOf((byte) 0xFD));

src/test/java/at/favre/lib/bytes/BytesTransformTest.java

@@ -367,6 +367,6 @@ public int compare(Byte o1, Byte o2) {
                 return 0;
             }
         }).supportInPlaceTransformation());
-        assertFalse(new BytesTransformers.ShuffleTransformer(new SecureRandom()).supportInPlaceTransformation());
+        assertTrue(new BytesTransformers.ShuffleTransformer(new SecureRandom()).supportInPlaceTransformation());
     }
 }