dsl: refactoring + tests

Author: mtumilowicz

src/main/java/dsl/Mailer.java

@@ -31,7 +31,7 @@ Mailer to(String to) {
         return new Mailer(from, StringUtils.defaultIfEmpty(to, ""));
     }
 
-    public static void send(UnaryOperator<Mailer> block) {
+    static void send(UnaryOperator<Mailer> block) {
         System.out.println(block.apply(EMPTY));
     }
 }

src/test/groovy/dsl/MailerTest.groovy

@@ -6,9 +6,7 @@ import spock.lang.Specification
  * Created by mtumilowicz on 2018-11-30.
  */
 class MailerTest extends Specification {
-    def "_"() {
-        // you don't have access to the object - you cannot reuse it later
-        // there is NO Mailer object
+    def "sending mail"() {
         Mailer.send({
             it.from("mtumilowicz01@gmail.com")
                     .to("abc@o2.pl")