Added test for ProjectUser.

Author: gmessner

src/test/java/org/gitlab4j/api/TestGitLabApiBeans.java

@@ -49,6 +49,7 @@
 import org.gitlab4j.api.models.Pipeline;
 import org.gitlab4j.api.models.Project;
 import org.gitlab4j.api.models.ProjectHook;
+import org.gitlab4j.api.models.ProjectUser;
 import org.gitlab4j.api.models.Session;
 import org.gitlab4j.api.models.Snippet;
 import org.gitlab4j.api.models.SshKey;
@@ -221,6 +222,20 @@ public void testArtifactsFile() {
         }
     }
 
+    @Test
+    public void testProjectUsers() {
+
+        try {
+            InputStreamReader reader = new InputStreamReader(GitLabApi.class.getResourceAsStream("project-users.json"));
+            ObjectMapper objectMapper = jacksonJson.getContext(null);
+            List<ProjectUser> projectUsres = objectMapper.readValue(reader, new TypeReference<List<ProjectUser>>() {});
+            assertTrue(compareJson(projectUsres, "project-users"));
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
     @Test
     public void testProjectHook() {