Get group collections

scm-webapp/src/test/java/sonia/scm/api/v2/resources/GroupCollectionToDtoMapperTest.java

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+package sonia.scm.api.v2.resources;
+
+import de.otto.edison.hal.HalRepresentation;
+import org.apache.shiro.subject.Subject;
+import org.apache.shiro.subject.support.SubjectThreadState;
+import org.apache.shiro.util.ThreadContext;
+import org.apache.shiro.util.ThreadState;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import sonia.scm.PageResult;
+import sonia.scm.group.Group;
+
+import javax.ws.rs.core.UriInfo;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+
+import static java.util.stream.Collectors.toList;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class GroupCollectionToDtoMapperTest {
+
+  private final UriInfo uriInfo = mock(UriInfo.class);
+  private final GroupToGroupDtoMapper groupToDtoMapper = mock(GroupToGroupDtoMapper.class);
+  private final Subject subject = mock(Subject.class);
+  private final ThreadState subjectThreadState = new SubjectThreadState(subject);
+
+  private final GroupCollectionToDtoMapper mapper = new GroupCollectionToDtoMapper(groupToDtoMapper);
+
+  private URI expectedBaseUri;
+
+  @Before
+  public void init() throws URISyntaxException {
+    URI baseUri = new URI("http://example.com/base/");
+    expectedBaseUri = baseUri.resolve(GroupV2Resource.GROUPS_PATH_V2 + "/");
+    when(uriInfo.getBaseUri()).thenReturn(baseUri);
+    subjectThreadState.bind();
+    ThreadContext.bind(subject);
+  }
+
+  @After
+  public void unbindSubject() {
+    ThreadContext.unbindSubject();
+  }
+
+  @Test
+  public void shouldSetPageNumber() {
+    PageResult<Group> pageResult = mockPageResult(true, "nobodies");
+    GroupCollectionDto groupCollectionDto = mapper.map(uriInfo, 1, 1, pageResult);
+    assertEquals(1, groupCollectionDto.getPage());
+  }
+
+  @Test
+  public void shouldHaveSelfLink() {
+    PageResult<Group> pageResult = mockPageResult(true, "nobodies");
+    GroupCollectionDto groupCollectionDto = mapper.map(uriInfo, 1, 1, pageResult);
+    assertTrue(groupCollectionDto.getLinks().getLinkBy("self").get().getHref().startsWith(expectedBaseUri.toString()));
+  }
+
+  @Test
+  public void shouldCreateNextPageLink_whenHasMore() {
+    PageResult<Group> pageResult = mockPageResult(true, "nobodies");
+    GroupCollectionDto groupCollectionDto = mapper.map(uriInfo, 1, 1, pageResult);
+    assertTrue(groupCollectionDto.getLinks().getLinkBy("next").get().getHref().contains("page=2"));
+  }
+
+  @Test
+  public void shouldNotCreateNextPageLink_whenNoMore() {
+    PageResult<Group> pageResult = mockPageResult(false, "nobodies");
+    GroupCollectionDto groupCollectionDto = mapper.map(uriInfo, 1, 1, pageResult);
+    assertFalse(groupCollectionDto.getLinks().stream().anyMatch(link -> link.getHref().contains("page=2")));
+  }
+
+  @Test
+  public void shouldHaveCreateLink_whenHasPermission() {
+    PageResult<Group> pageResult = mockPageResult(false, "nobodies");
+    when(subject.isPermitted("group:create")).thenReturn(true);
+
+    GroupCollectionDto groupCollectionDto = mapper.map(uriInfo, 1, 1, pageResult);
+
+    assertTrue(groupCollectionDto.getLinks().getLinkBy("create").isPresent());
+  }
+
+  @Test
+  public void shouldNotHaveCreateLink_whenHasNoPermission() {
+    PageResult<Group> pageResult = mockPageResult(false, "nobodies");
+    when(subject.isPermitted("group:create")).thenReturn(false);
+
+    GroupCollectionDto groupCollectionDto = mapper.map(uriInfo, 1, 1, pageResult);
+
+    assertFalse(groupCollectionDto.getLinks().getLinkBy("create").isPresent());
+  }
+
+  @Test
+  public void shouldMapGroups() {
+    PageResult<Group> pageResult = mockPageResult(false, "nobodies", "bosses");
+    GroupCollectionDto groupCollectionDto = mapper.map(uriInfo, 1, 2, pageResult);
+    List<HalRepresentation> groups = groupCollectionDto.getEmbedded().getItemsBy("groups");
+    assertEquals(2, groups.size());
+    assertEquals("nobodies", ((GroupDto) groups.get(0)).getName());
+    assertEquals("bosses", ((GroupDto) groups.get(1)).getName());
+  }
+
+  private PageResult<Group> mockPageResult(boolean hasMore, String... groupNames) {
+    Collection<Group> groups = Arrays.stream(groupNames).map(this::mockGroupWithDto).collect(toList());
+    return new PageResult<>(groups, hasMore);
+  }
+
+  private Group mockGroupWithDto(String groupName) {
+    Group group = new Group();
+    group.setName(groupName);
+    when(groupToDtoMapper.map(group, uriInfo)).thenReturn(createGroupDto(group));
+    return group;
+  }
+
+  private GroupDto createGroupDto(Group group) {
+    GroupDto dto = new GroupDto();
+    dto.setName(group.getName());
+    return dto;
+  }
+
+}