Added GetCourseGroupsResponse(-Test)

Signed-off-by: Marcin Woźniak <y0rune@aol.com>

restservice/src/main/java/com/plannaplan/responses/models/GetCourseGroupsResponse.java

@@ -0,0 +1,32 @@
+package com.plannaplan.responses.models;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import com.plannaplan.entities.Groups;
+import com.plannaplan.types.GroupType;
+
+public class GetCourseGroupsResponse {
+
+    private List<DefaultGroupResponse> lectures = new ArrayList<>();
+    private List<DefaultGroupResponse> classes = new ArrayList<>();
+
+    public GetCourseGroupsResponse(List<Groups> groups ){
+        groups.stream().forEach(group -> {
+            if (group.getType() == GroupType.CLASS) {
+                this.classes.add(new DefaultGroupResponse(group));
+            } else {
+                this.lectures.add(new DefaultGroupResponse(group));
+            }
+        });
+    }
+
+    public List<DefaultGroupResponse> getClasses() {
+        return this.classes;
+    }
+
+    public List<DefaultGroupResponse> getLectures() {
+        return this.lectures;
+    }
+
+}

restservice/src/test/java/com/plannaplan/responses/models/GetCourseGroupResponseTest.java

@@ -0,0 +1,24 @@
+package com.plannaplan.responses.models;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.util.Arrays;
+import java.util.List;
+
+import com.plannaplan.entities.Groups;
+import com.plannaplan.types.WeekDay;
+
+import org.junit.Test;
+
+public class GetCourseGroupResponseTest {
+
+    @Test
+    public void shouldMapListGroupsToResponse() {
+        final List<Groups> groups = Arrays.asList(new Groups(32,"A1-1", null, 480, WeekDay.MONDAY, null), new Groups(150,"A1-2", null, 500, WeekDay.THURSDAY, null));
+        
+        final GetCourseGroupsResponse response = new GetCourseGroupsResponse(groups);
+        assertTrue(response.getClasses().size() == 1);
+        assertTrue(response.getLectures().size() == 1);
+    }
+
+}