Add httpOnly attribute

Author: FagnerMartinsBrack

src/main/java/org/jscookie/AttributesDefinition.java

@@ -9,4 +9,6 @@ public abstract class AttributesDefinition {
 	abstract String domain();
 	public abstract AttributesDefinition secure( Boolean secure );
 	abstract Boolean secure();
+	public abstract AttributesDefinition httpOnly( Boolean httpOnly );
+	abstract Boolean httpOnly();
 }

src/main/java/org/jscookie/Cookies.java

@@ -136,6 +136,11 @@ public synchronized void set( String name, String value, AttributesDefinition at
 			header.append( "; Secure" );
 		}
 
+		Boolean httpOnly = attributes.httpOnly();
+		if ( Boolean.TRUE.equals( httpOnly ) ) {
+			header.append( "; HttpOnly" );
+		}
+
 		if ( response.isCommitted() ) {
 			return;
 		}
@@ -400,6 +405,7 @@ public static class Attributes extends AttributesDefinition {
 		private String path;
 		private String domain;
 		private Boolean secure;
+		private Boolean httpOnly;
 
 		private Attributes() {}
 
@@ -447,6 +453,16 @@ public Attributes secure( Boolean secure ) {
 			return this;
 		}
 
+		@Override
+		Boolean httpOnly() {
+			return httpOnly;
+		}
+		@Override
+		public Attributes httpOnly( Boolean httpOnly ) {
+			this.httpOnly = httpOnly;
+			return this;
+		}
+
 		private Attributes merge( AttributesDefinition reference ) {
 			if ( reference.path() != null ) {
 				path = reference.path();
@@ -460,6 +476,9 @@ private Attributes merge( AttributesDefinition reference ) {
 			if ( reference.secure() != null ) {
 				secure = reference.secure();
 			}
+			if ( reference.httpOnly() != null ) {
+				httpOnly = reference.httpOnly();
+			}
 			return this;
 		}
 	}

src/test/java/org/jscookie/test/unit/CookiesWriteTest.java

@@ -87,4 +87,12 @@ public void expires_attribute() {
 		);
 		Mockito.verify( response ).addHeader( "Set-Cookie", "c=v; Path=/; Expires=Sun, 07 Jun 2015 23:38:46 GMT" );
 	}
+
+	@Test
+	public void httponly_attribute() {
+		cookies.set( "c", "v", Attributes.empty()
+			.httpOnly( true )
+		);
+		Mockito.verify( response ).addHeader( "Set-Cookie", "c=v; Path=/; HttpOnly" );
+	}
 }