Added unit tests for getProjectLanguages().

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

@@ -28,6 +28,7 @@ import static org.junit.Assert.assertTrue;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.util.List;
+import java.util.Map;
 
 import org.gitlab4j.api.models.ArtifactsFile;
 import org.gitlab4j.api.models.Branch;
@@ -271,15 +272,26 @@ public class TestGitLabApiBeans {
         }
     }
 
+    @Test
+    public void testProjectLanguages() {
+
+        try {
+            InputStreamReader reader = new InputStreamReader(GitLabApi.class.getResourceAsStream("project-languages.json"));
+            ObjectMapper objectMapper = jacksonJson.getContext(null);
+            Map<String, Float> projectLanguages = objectMapper.readValue(reader, new TypeReference<Map<String, Float>>() {});
+            assertTrue(compareJson(projectLanguages, "project-languages"));
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
     @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"));
-
+            List<ProjectUser> projectUsers = objectMapper.readValue(reader, new TypeReference<List<ProjectUser>>() {});
+            assertTrue(compareJson(projectUsers, "project-users"));
         } catch (Exception e) {
             e.printStackTrace();
         }

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

@@ -31,6 +31,7 @@ import static org.junit.Assume.assumeTrue;
 
 import java.util.Arrays;
 import java.util.List;
+import java.util.Map;
 import java.util.Optional;
 
 import javax.ws.rs.core.Response;
@@ -461,6 +462,18 @@ public class TestProjectApi {
         assertTrue(projects.size() > 0);
     }
 
+    @Test
+    public void testProjectLanguages() throws GitLabApiException {
+
+        assumeTrue(TEST_GROUP != null && TEST_GROUP_PROJECT != null);
+        assumeTrue(TEST_GROUP.trim().length() > 0 && TEST_GROUP_PROJECT.trim().length() > 0);
+
+        Project project = gitLabApi.getProjectApi().getProject(TEST_GROUP, TEST_GROUP_PROJECT);
+        assertNotNull(project);
+        Map<String, Float> projectLanguages = gitLabApi.getProjectApi().getProjectLanguages(project.getId());
+        assertNotNull(projectLanguages);
+    }
+
     @Test
     public void testForkProject() throws GitLabApiException {
 

src/test/resources/org/gitlab4j/api/project-languages.json

+{
+  "Ruby": 66.69,
+  "JavaScript": 22.98,
+  "HTML": 7.91,
+  "CoffeeScript": 2.42
+}
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