Add char array constructor

Author: patrickfav

CHANGELOG

@@ -3,7 +3,7 @@
 ## v0.4.6
 
 * add appending with strings
-* add boolean, float and double constructor
+* add boolean, float, double and char array constructor
 
 ## v0.4.5
 

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

@@ -25,6 +25,7 @@
 import java.math.BigInteger;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
+import java.nio.CharBuffer;
 import java.nio.ReadOnlyBufferException;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
@@ -433,6 +434,16 @@ public static Bytes from(CharSequence string, Charset charset) {
         return wrap(string.toString().getBytes(charset));
     }
 
+    /**
+     * Creates a new instance from given char array using utf-8 encoding
+     *
+     * @param charArray to get the internal byte array from
+     * @return new instance
+     */
+    public static Bytes from(char[] charArray) {
+        return from(CharBuffer.wrap(charArray).toString(), StandardCharsets.UTF_8);
+    }
+
     /**
      * Parses a big endian binary string (e.g. <code>10010001</code>)
      *

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

@@ -241,6 +241,15 @@ public void fromString() {
         checkString("7asdh#ö01^^`´dµ@€", StandardCharsets.ISO_8859_1);
     }
 
+    @Test
+    public void fromCharArray() {
+        checkCharArray("");
+        checkCharArray(" ");
+        checkCharArray("\t");
+        checkCharArray("a");
+        checkCharArray("12345678abcdefjkl");
+    }
+
     @Test
     public void fromMultipleBytes() {
         assertArrayEquals(new byte[]{0x01, 0x02, 0x03}, Bytes.from(Bytes.from((byte) 0x01), Bytes.from((byte) 0x02), Bytes.from((byte) 0x03)).array());
@@ -261,6 +270,11 @@ private void checkString(String string, Charset charset) {
         }
     }
 
+    private void checkCharArray(String s) {
+        Bytes b = Bytes.from(s.toCharArray());
+        assertArrayEquals(String.valueOf(s.toCharArray()).getBytes(StandardCharsets.UTF_8), b.array());
+    }
+
     @Test
     public void fromInputStream() {
         checkInputStream(example_bytes_one);