Java tutorial
/** * Copyright 2009 Bamboozle Who * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.google.code.trapo.controller; import static java.util.Arrays.asList; import static org.hamcrest.CoreMatchers.equalTo; import static org.hamcrest.CoreMatchers.is; import static org.hamcrest.CoreMatchers.notNullValue; import static org.junit.Assert.assertThat; import static org.mockito.BDDMockito.given; import static org.mockito.Mockito.mock; import static org.mockito.Mockito.verify; import static org.mockito.Mockito.when; import java.util.List; import org.hamcrest.CoreMatchers; import org.junit.Test; import org.mockito.BDDMockito; import org.mockito.Mockito; import org.mockito.invocation.InvocationOnMock; import org.mockito.stubbing.Answer; import org.springframework.ui.ExtendedModelMap; import org.springframework.ui.Model; import org.springframework.validation.BindingResult; import org.springframework.validation.Validator; import com.google.code.trapo.domain.Forum; import com.google.code.trapo.persistence.ForumRepository; import com.google.code.trapo.persistence.TopicRepository; import com.google.code.trapo.web.Message; /** * @author Bamboozle Who * * @since 31/08/2009 */ public class ForumControllerTests { @Test public void should_update_a_existent_forum() { Forum forum = forum(); forum.setId("1234"); // already on database Validator validator = mock(Validator.class); ForumRepository repository = this.repository(); ForumsController controller = controllerWith(repository, validator); String result = controller.save(forum, errors(), model()); assertThat(result, equalTo("forums/show")); verify(repository).update(forum); } @Test public void should_not_update_forum_when_there_are_invalid_field_values() { Validator validator = mock(Validator.class); ForumRepository repository = this.repository(); ForumsController controller = controllerWith(repository, validator); BindingResult errors = errors(); BDDMockito.given(errors.hasErrors()).willReturn(true); String result = controller.save(forum(), errors, model()); assertThat(result, equalTo("forums/create")); } @Test public void verify_that_update_method_add_a_information_message() { Forum forum = forum(); forum.setId("1234"); Model model = this.model(); ForumRepository repository = repository(); Validator validator = mock(Validator.class); ForumsController controller = controllerWith(repository, validator); controller.save(forum, errors(), model); Message message = (Message) model.asMap().get("message"); assertThat(message, notNullValue()); verify(repository).update(forum); } @Test public void should_redirect_to_show_page_when_saving_a_new_forum() { Forum forum = forum(); Validator validator = mock(Validator.class); ForumsController controller = controllerWith(repository(), validator); String result = controller.save(forum, errors(), model()); assertThat(result, equalTo("forums/show")); } @Test public void should_save_a_forum_when_all_properties_are_ok() { Forum forum = forum(); BindingResult errors = errors(); given(errors.hasErrors()).willReturn(false); Validator validator = mock(Validator.class); ForumsController controller = controllerWith(repositoryFor(forum), validator); controller.save(forum, errors, model()); assertThat(forum.getId(), notNullValue()); } @Test public void should_open_forums_when_saving() { Forum forum = forum(); Validator validator = mock(Validator.class); ForumsController controller = controllerWith(repositoryFor(forum), validator); controller.save(forum, errors(), model()); assertThat(forum.isOpen(), is(true)); } @Test public void should_add_forum_attribute_to_model_when_saving_with_success() { Model model = model(); Forum forum = forum(); Validator validator = mock(Validator.class); ForumsController controller = controllerWith(repository(), validator); controller.save(forum, errors(), model); assertThat(model.containsAttribute("forum"), is(true)); } @Test @SuppressWarnings("unchecked") public void should_return_all_forums_when_listing() { Model model = this.model(); ForumRepository repository = mock(ForumRepository.class); when(repository.listAll()).thenReturn(asList(forum(), forum(), forum())); ForumsController controller = controllerWith(repository); controller.list(model); List<Forum> forums = (List<Forum>) model.asMap().get("forums"); assertThat(forums.size(), CoreMatchers.equalTo(3)); assertThat(model.containsAttribute("forums"), is(true)); } @Test public void should_redirect_to_list_page_when_listing_all_forums() { ForumsController controller = controllerWith(repository()); String result = controller.list(model()); assertThat(result, equalTo("forums/list")); } @Test public void should_redirect_to_create_page_when_asking_to_create_a_new_forum() { ForumsController controller = controllerWith(repository()); String result = controller.create(model()); assertThat(result, equalTo("forums/create")); } @Test public void should_find_a_forum_by_name() { Forum forum = forum(); Model model = model(); ForumRepository repository = mock(ForumRepository.class); when(repository.byName("my new forum")).thenReturn(forum); ForumsController controller = controllerWith(repository); controller.setTopicsRepository(mock(TopicRepository.class)); controller.show("my new forum", model); assertThat(model.containsAttribute("forum"), is(true)); } @Test public void should_redirect_to_list_when_trying_to_show_a_forum_that_not_exists() { ForumRepository repository = repository(); when(repository.byName("non existent forum")).thenReturn(null); ForumsController controller = controllerWith(repository); String result = controller.show("non existent forum", model()); assertThat(result, equalTo("forums/list")); } @Test public void should_warning_the_user_when_trying_to_show_a_forum_that_not_exists() { ForumRepository repository = repository(); when(repository.byName("non existent forum")).thenReturn(null); Model model = model(); ForumsController controller = controllerWith(repository); controller.show("non existent forum", model); Message message = (Message) model.asMap().get("message"); assertThat(message.isWarning(), is(true)); } @Test public void should_redirect_to_list_when_trying_to_edit_a_forum_that_not_exists() { ForumsController controller = controllerForNonExistentForum(); String result = controller.edit("to edit", model()); assertThat(result, equalTo("forums/list")); } @Test public void should_put_a_message_in_model_when_trying_edit_a_forum_that_not_exists() { Model model = model(); ForumsController controller = controllerForNonExistentForum(); controller.edit("to edit", model); Message message = (Message) model.asMap().get("message"); assertThat(message.getText(), equalTo("Forum to edit was not found.")); } @Test public void should_redirects_to_create_page_when_editing_a_existent_forum() { ForumsController controller = controllerToExistentForum(forum()); assertThat(controller.edit("to edit", model()), equalTo("forums/create")); } @Test public void should_put_forum_in_model_when_editing_a_existent_forum() { Forum forum = forum(); Model model = model(); ForumsController controller = controllerToExistentForum(forum); controller.edit("to edit", model); assertThat((Forum) model.asMap().get("forum"), equalTo(forum)); } @Test public void should_delete_a_existent_forum() { ForumRepository repository = repository(); when(repository.get("1234")).thenReturn(forum()); ForumsController controller = controllerWith(repository); Model model = model(); String result = controller.delete("1234", model); assertThat(result, equalTo("forums/list")); Message message = (Message) model.asMap().get("message"); assertThat(message.isInformation(), is(true)); } @Test public void should_redirect_to_list_with_message_when_trying_to_delete_a_non_existent_forum() { ForumRepository repository = repository(); when(repository.get("1234")).thenReturn(null); ForumsController controller = controllerWith(repository); Model model = model(); String result = controller.delete("1234", model); assertThat(result, equalTo("forums/list")); Message message = (Message) model.asMap().get("message"); assertThat(message.isWarning(), is(true)); } private ForumsController controllerWith(ForumRepository repository, Validator validator) { ForumsController controller = controllerWith(repository); return controller; } private ForumsController controllerWith(ForumRepository repository) { ForumsController controller = new ForumsController(); controller.setForumRepository(repository); return controller; } private Forum forum() { Forum forum = new Forum(); forum.setName("my new name"); forum.setDescription("my description"); forum.open(); return forum; } private ForumRepository repository() { return Mockito.mock(ForumRepository.class); } private ForumRepository repositoryFor(final Forum forum) { ForumRepository repository = Mockito.mock(ForumRepository.class); when(repository.add(forum)).thenAnswer(new Answer<Forum>() { public Forum answer(InvocationOnMock invocation) throws Throwable { forum.setId("1234"); return forum; } }); return repository; } private ForumsController controllerToExistentForum(Forum forum) { ForumRepository forumRepository = mock(ForumRepository.class); when(forumRepository.get("to edit")).thenReturn(forum); ForumsController controller = controllerWith(forumRepository); return controller; } private ForumsController controllerForNonExistentForum() { ForumRepository repository = mock(ForumRepository.class); when(repository.byName("to edit")).thenReturn(null); ForumsController controller = controllerWith(repository); return controller; } private Model model() { return new ExtendedModelMap(); } private BindingResult errors() { return mock(BindingResult.class); } }