package org.apidesign.anagram.gui;

 import org.apidesign.anagram.api.Scrambler;

 import org.apidesign.anagram.api.WordLibrary;

 import org.junit.Before;

 import static org.junit.Assert.*;

 import org.junit.Test;

 import org.netbeans.junit.MockServices;

 public abstract class AnagramsTestBase {

     protected abstract Anagrams create();

     @Before

     public void cleanUpServices() {

         MockServices.setServices();

     }

     @Test public void testInjectionOfServices() throws Exception {

         Anagrams ui = create();

         assertNull("No scrambler injected yet", ui.getScrambler());

         assertNull("No scrambler injected yet", ui.getWordLibrary());

         MockServices.setServices(

             ReversingMockScrambler.class, SingleMockLibrary.class

         );

         Scrambler s = ui.getScrambler();

         assertNotNull("Now we have scrambler", s);

         assertEquals(

             "It is the mock one", ReversingMockScrambler.class, s.getClass()

         );

         WordLibrary l = ui.getWordLibrary();

         assertNotNull("Now we have library", l);

         assertEquals(

             "It is the mock one", SingleMockLibrary.class, l.getClass()

         );

         ui.display();

         assertEquals(

             "The word from SingleMockLibrary is taken",

             "Hello World!", ui.getOriginalWord()

         );

         assertEquals(

             "The word is rotated using ReversingMockScrambler",

             "!dlroW olleH", ui.getScrambledWord()

         );

     }

     public static final class ReversingMockScrambler implements Scrambler {

         public String scramble(String word) {

             return new StringBuilder(word).reverse().toString();

         }

     }

     public static final class SingleMockLibrary implements WordLibrary {

         public String[] getWords() {

             return new String[] { "Hello World!" };

         }

     }

 }