Test characters with 4 bytes mixed with single bytes

Author: FagnerMartinsBrack

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

@@ -53,6 +53,12 @@ public void character_with_4_bytes_in_name() {
 		Mockito.verify( response ).addHeader( "Set-Cookie", "c=%F0%A9%B8%BD; Path=/" );
 	}
 
+	@Test
+	public void character_with_4_bytes_mixed_with_single_bytes() {
+		cookies.set( "c", "a𩸽b" );
+		Mockito.verify( response ).addHeader( "Set-Cookie", "c=a%F0%A9%B8%BDb; Path=/" );
+	}
+
 	@Test
 	public void characters_allowed_in_cookie_value() {
 		cookies.set( "c", "/:<=>?@[]{}" );