PMT-43: Implement Tests and Minor Tweaks

Reviewed-on: #15
Reviewed-by: Dominik Säume <dominik.saeume@hmmh.de>

api/pmt.yml

@@ -46,6 +46,25 @@ components:
         plannedEnd:
           type: string
           format: date-time
+    UpdateProjectDTO:
+      type: object
+      properties:
+        name:
+          type: string
+        goal:
+          type: string
+        customerId:
+          type: integer
+          format: int64
+        administratorId:
+          type: integer
+          format: int64
+        start:
+          type: string
+          format: date-time
+        plannedEnd:
+          type: string
+          format: date-time
     CreatedProjectDTO:
       type: object
       properties:
@@ -77,6 +96,45 @@ components:
         qualificationId:
           type: integer
           format: int64
+    Employee:
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+        lastName:
+          type: string
+        firstName:
+          type: string
+        street:
+          type: string
+        postcode:
+          maxLength: 5
+          minLength: 5
+          type: string
+        city:
+          type: string
+        phone:
+          type: string
+        skillSet:
+          type: array
+          items:
+            $ref: '#/components/schemas/Qualification'
+    Qualification:
+      type: object
+      properties:
+        skill:
+          type: string
+        id:
+          type: integer
+          format: int64
+    ProjectEmployeesDTO:
+      type: object
+      properties:
+        employees:
+          type: array
+          items:
+            $ref: "#/components/schemas/Employee"
   responses:
     Unauthorized:
       description: "Unauthorized"
@@ -154,7 +212,6 @@ paths:
         503:
           $ref: "#/components/responses/ServiceUnavailable"
 
-  
   /project/{id}:
     post:
       operationId: "addEmployee"
@@ -186,7 +243,36 @@ paths:
           $ref: "#/components/responses/InternalError"
         503:
           $ref: "#/components/responses/ServiceUnavailable"
-
+    put:
+      operationId: "updateProject"
+      description: "Updates a project"
+      parameters:
+        - in: path
+          name: id
+          schema:
+            type: integer
+            format: int64
+          required: true
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/UpdateProjectDTO"
+      responses:
+        204:
+          description: "Project updated successfully"
+        401:
+          $ref: "#/components/responses/Unauthorized"
+        404:
+          $ref: "#/components/responses/NotFound"
+        409:
+          $ref: "#/components/responses/Conflict"
+        422:
+          $ref: "#/components/responses/UnprocessableContent"
+        500:
+          $ref: "#/components/responses/InternalError"
+        503:
+          $ref: "#/components/responses/ServiceUnavailable"
     delete:
       operationId: "deleteProject"
       description: "Delete a specific Project"
@@ -203,10 +289,80 @@ paths:
         401:
           $ref: "#/components/responses/Unauthorized"
         404:
-          description: "Project not found"
+          $ref: "#/components/responses/NotFound"
-          content:
+        500:
-            text/plain:
+          $ref: "#/components/responses/InternalError"
-              schema:
+  /project/{id}/completed:
-                type: string
+    post:
+      operationId: "completeProject"
+      description: "Complete a specific project"
+      parameters:
+        - in: path
+          name: id
+          schema:
+            type: integer
+            format: int64
+          required: true
+      responses:
+        204:
+          description: "Completed"
+        401:
+          $ref: "#/components/responses/Unauthorized"
+        404:
+          $ref: "#/components/responses/NotFound"
+        500:
+          $ref: "#/components/responses/InternalError"
+
+  /project/{id}/employee/{employeeId}:
+    delete:
+      operationId: "removeEmployeeFromProject"
+      description: "Removes an employee from a Project"
+      parameters:
+        - in: path
+          name: id
+          schema:
+            type: integer
+            format: int64
+          required: true
+        - in: path
+          name: employeeId
+          schema:
+            type: integer
+            format: int64
+          required: true
+      responses:
+        204:
+          description: "Deletes the employee from the Project"
+        401:
+          $ref: "#/components/responses/Unauthorized"
+        404:
+          $ref: "#/components/responses/NotFound"
+        409:
+          $ref: "#/components/responses/Conflict"
+        500:
+          $ref: "#/components/responses/InternalError"
+        503:
+          $ref: "#/components/responses/ServiceUnavailable"
+
+  /project/{id}/employees:
+    get:
+      description: "getAllEmployees"
+      operationId: "Get a List of all Employees from a specific Project"
+      parameters:
+        - in: path
+          name: id
+          schema:
+            type: integer
+            format: int64
+          required: true
+      responses:
+        200:
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ProjectEmployeesDTO"
+          description: 'Get a List of all Employees from a specific Project '
+        404:
+          $ref: '#/components/responses/NotFound'
         500:
           $ref: "#/components/responses/InternalError"

src/main/java/de/hmmh/pmt/ApiController.java

@@ -1,27 +1,26 @@
 package de.hmmh.pmt;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
-import de.hmmh.pmt.db.Allocation;
+
-import de.hmmh.pmt.db.AllocationRepository;
+import de.hmmh.pmt.db.*;
-import de.hmmh.pmt.db.Project;
-import de.hmmh.pmt.db.ProjectRepository;
 import de.hmmh.pmt.dtos.*;
 import de.hmmh.pmt.employee.ApiClientFactory;
 import de.hmmh.pmt.employee.dtos.EmployeeResponseDTO;
 import de.hmmh.pmt.oas.DefaultApi;
+import de.hmmh.pmt.util.ApiTools;
 import de.hmmh.pmt.util.Mapper;
+import de.hmmh.pmt.util.Validator;
 import jakarta.servlet.http.HttpServletRequest;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.client.HttpClientErrorException;
 import org.springframework.web.client.RestClientException;
 
-import java.time.ZoneOffset;
+import java.time.LocalDateTime;
-import java.util.List;
+import java.util.*;
-import java.util.Optional;
+import java.util.stream.Collectors;
 
 @Controller
 @RequestMapping("${openapi.projectManagement.base-path:/api/v1}")
@@ -31,6 +30,10 @@ public class ApiController implements DefaultApi {
     @Autowired
     private ApiClientFactory apiClientFactory;
     @Autowired
+    private Validator validator;
+    @Autowired
+    private ApiTools apiTools;
+    @Autowired
     private ProjectRepository projectRepository;
     @Autowired
     AllocationRepository allocationRepository;
@@ -69,26 +72,61 @@ public class ApiController implements DefaultApi {
         return ResponseEntity.ok(response);
     }
 
+    @Override
+    public ResponseEntity<Void> updateProject(Long id, UpdateProjectDTO body) {
+        Optional<Project> optionalProject = projectRepository.findById(id);
+        if (optionalProject.isEmpty()) {
+            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+        }
+        Project project = optionalProject.get();
+
+        if (!project.getName().equals(body.getName()) && projectRepository.existsByName(body.getName())) {
+            return new ResponseEntity<>(HttpStatus.CONFLICT);
+        }
+
+        if (project.getAdministratorId().equals(body.getAdministratorId())) {
+            HttpStatus status = apiTools.checkEmployeeExists(body.getAdministratorId()).status();
+            if (status != HttpStatus.OK) {
+                return new ResponseEntity<>(status);
+            }
+        }
+
+        Project finalProject = mapper.map(project, body);
+        if (!validator.isValidProject(project)) {
+            return new ResponseEntity<>(HttpStatus.UNPROCESSABLE_ENTITY);
+        }
+
+        if (validator.areAllocationTimeRangesOverlapping(
+                project.getStart(),
+                project.getPlannedEnd(),
+                allocationRepository
+                        .findAllByProjectId(finalProject.getId())
+                        .stream()
+                        .map(Allocation::getEmployeeId)
+                        .flatMap(employeeId -> allocationRepository.findAllByEmployeeId(employeeId).stream())
+                        .filter(employeeAllocation -> employeeAllocation.getProjectId().equals(finalProject.getId()))
+                        .toList()
+        )) {
+            return new ResponseEntity<>(HttpStatus.CONFLICT);
+        }
+
+        projectRepository.save(project);
+        return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+    }
+
     @Override
     public ResponseEntity<CreatedProjectDTO> createProject(CreateProjectDTO body) {
         if (projectRepository.existsByName(body.getName())) {
             return new ResponseEntity<>(HttpStatus.CONFLICT);
         }
 
-        try {
+        HttpStatus status = apiTools.checkEmployeeExists(body.getAdministratorId()).status();
-            apiClientFactory.getEmployeeApi().findById(body.getAdministratorId());
+        if (status != HttpStatus.OK) {
-        } catch (HttpClientErrorException exception) {
+            return new ResponseEntity<>(status);
-            return new ResponseEntity<>(
-                    exception.getStatusCode().equals(HttpStatus.NOT_FOUND)
-                            ? HttpStatus.NOT_FOUND
-                            : HttpStatus.SERVICE_UNAVAILABLE
-            );
-        } catch (RestClientException exception) {
-            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
         }
 
         Project project = mapper.map(body);
-        if (!project.isValid()) {
+        if (!validator.isValidProject(project)) {
             return new ResponseEntity<>(HttpStatus.UNPROCESSABLE_ENTITY);
         }
         projectRepository.save(project);
@@ -105,16 +143,13 @@ public class ApiController implements DefaultApi {
         }
         Project project = optionalProject.get();
 
-        EmployeeResponseDTO employee;
+
-        try {
+        ApiTools.CheckEmployeeRecord employeeRecord = apiTools.checkEmployeeExists(body.getEmployeeId());
-            employee = apiClientFactory.getEmployeeApi().findById(body.getEmployeeId());
+        if (employeeRecord.status() != HttpStatus.OK) {
-        } catch (HttpClientErrorException exception) {
+            return new ResponseEntity<>(employeeRecord.status());
-            return new ResponseEntity<>(exception.getStatusCode().equals(HttpStatus.NOT_FOUND)
-                    ? HttpStatus.NOT_FOUND
-                    : HttpStatus.SERVICE_UNAVAILABLE);
-        } catch (RestClientException exception) {
-            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
         }
+        EmployeeResponseDTO employee = employeeRecord.employee();
+
 
         if (employee.getSkillSet()
                 .stream()
@@ -122,16 +157,11 @@ public class ApiController implements DefaultApi {
             return new ResponseEntity<>(HttpStatus.UNPROCESSABLE_ENTITY);
         }
 
-        long start = project.getStart().toEpochSecond(ZoneOffset.UTC);
+        if (validator.areAllocationTimeRangesOverlapping(
-        long plannedEnd = project.getPlannedEnd().toEpochSecond(ZoneOffset.UTC);
+                project.getStart(),
-        List<Allocation> allocations = allocationRepository.findAllByEmployeeId(body.getEmployeeId());
+                project.getPlannedEnd(),
-        if (allocations.stream()
+                allocationRepository.findAllByEmployeeId(body.getEmployeeId())
-                .map(Allocation::getProject)
+        )) {
-                .anyMatch(allocatedProject -> {
-                    long allocatedStart = allocatedProject.getStart().toEpochSecond(ZoneOffset.UTC);
-                    long allocatedPlannedEnd = allocatedProject.getPlannedEnd().toEpochSecond(ZoneOffset.UTC);
-                    return Math.max(start, allocatedStart) <= Math.min(plannedEnd, allocatedPlannedEnd);
-                })) {
             return new ResponseEntity<>(HttpStatus.UNPROCESSABLE_ENTITY);
         }
 
@@ -143,4 +173,56 @@ public class ApiController implements DefaultApi {
 
         return new ResponseEntity<>(HttpStatus.NO_CONTENT);
     }
+
+    @Override
+    public ResponseEntity<Void> completeProject(Long id) {
+        Optional<Project> optionalProject = projectRepository.findById(id);
+        if (optionalProject.isEmpty()) {
+            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+        }
+        Project project = optionalProject.get();
+
+        project.setRealEnd(LocalDateTime.now());
+        projectRepository.save(project);
+        return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+    }
+
+    @Override
+    public ResponseEntity<Void> removeEmployeeFromProject(Long id, Long employeeId){
+       Optional<Allocation> allocation = allocationRepository.findById(new AllocationId(id, employeeId));
+        if (allocation.isEmpty()){
+            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+        }
+
+        allocationRepository.delete(allocation.get());
+        return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+    }
+
+    @Override
+    public ResponseEntity<ProjectEmployeesDTO> getAListOfAllEmployeesFromASpecificProject(Long id) {
+        if (!projectRepository.existsById(id)) {
+            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+        }
+
+        ProjectEmployeesDTO dto = new ProjectEmployeesDTO();
+        List<Allocation> allocationsByProject = allocationRepository.findAllByProjectId(id);
+        if (allocationsByProject.isEmpty()) {
+            return new ResponseEntity<>(dto, HttpStatus.OK);
+        }
+
+        Set<Long> employeeIds = allocationsByProject.stream()
+                .map(Allocation::getEmployeeId)
+                .collect(Collectors.toSet());
+
+        try {
+            List<Employee> employees = apiClientFactory.getEmployeeApi().findAll1().stream()
+                    .filter(employeeResponseDTO -> employeeIds.contains(employeeResponseDTO.getId()))
+                    .map(mapper::map)
+                    .toList();
+            dto.setEmployees(employees);
+            return new ResponseEntity<>(dto, HttpStatus.OK);
+        }  catch (RestClientException exception) {
+            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
+        }
+    }
 }

src/main/java/de/hmmh/pmt/db/AllocationRepository.java

@@ -7,4 +7,5 @@ import java.util.List;
 public interface AllocationRepository extends JpaRepository<Allocation, AllocationId> {
 
     List<Allocation> findAllByEmployeeId(Long employeeId);
+    List<Allocation> findAllByProjectId(Long projectId);
 }

src/main/java/de/hmmh/pmt/db/Project.java

@@ -47,16 +47,4 @@ public class Project {
     private LocalDateTime plannedEnd;
 
     private LocalDateTime realEnd; // Cant be named just "end" because it's and SQL Keyword
-
-
-    public boolean isValid() {
-        Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
-        Set<ConstraintViolation<Project>> violations = validator.validate(this);
-
-        return violations.isEmpty() &&
-               plannedEnd.isAfter(start) &&
-               (realEnd == null || realEnd.isAfter(start));
 }
-
-}
-

src/main/java/de/hmmh/pmt/util/ApiTools.java

@@ -0,0 +1,34 @@
+package de.hmmh.pmt.util;
+
+import de.hmmh.pmt.employee.ApiClientFactory;
+import de.hmmh.pmt.employee.dtos.EmployeeResponseDTO;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Component;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.client.RestClientException;
+
+@Component
+public class ApiTools {
+
+    @Autowired
+    private ApiClientFactory apiClientFactory;
+
+    public record CheckEmployeeRecord(EmployeeResponseDTO employee, HttpStatus status) {}
+    public CheckEmployeeRecord checkEmployeeExists(long id) {
+        EmployeeResponseDTO employee;
+        try {
+            employee =apiClientFactory.getEmployeeApi().findById(id);
+        } catch (HttpClientErrorException exception) {
+            return new CheckEmployeeRecord(
+                    null,
+                    exception.getStatusCode().equals(HttpStatus.NOT_FOUND)
+                            ? HttpStatus.NOT_FOUND
+                            : HttpStatus.SERVICE_UNAVAILABLE
+            );
+        } catch (RestClientException exception) {
+            return new CheckEmployeeRecord(null, HttpStatus.INTERNAL_SERVER_ERROR);
+        }
+        return new CheckEmployeeRecord(employee, HttpStatus.OK);
+    }
+}

src/main/java/de/hmmh/pmt/util/Mapper.java

@@ -3,8 +3,15 @@ package de.hmmh.pmt.util;
 import de.hmmh.pmt.db.Project;
 import de.hmmh.pmt.dtos.CreateProjectDTO;
 import de.hmmh.pmt.dtos.CreatedProjectDTO;
+import de.hmmh.pmt.dtos.Employee;
+import de.hmmh.pmt.dtos.Qualification ;
+import de.hmmh.pmt.employee.dtos.EmployeeResponseDTO;
+import de.hmmh.pmt.employee.dtos.QualificationGetDTO;
+import de.hmmh.pmt.dtos.UpdateProjectDTO;
 import org.springframework.stereotype.Component;
 
+import java.util.List;
+
 @Component
 public class Mapper {
     public Project map(CreateProjectDTO dto) {
@@ -29,4 +36,40 @@ public class Mapper {
         dto.setPlannedEnd(project.getPlannedEnd());
         return dto;
     }
+
+    public Employee map(EmployeeResponseDTO employeeResponseDTO)  {
+        Employee dto = new Employee();
+        dto.setId(employeeResponseDTO.getId());
+        dto.setLastName(employeeResponseDTO.getLastName());
+        dto.setFirstName(employeeResponseDTO.getFirstName());
+        dto.setStreet(employeeResponseDTO.getStreet());
+        dto.setPostcode(employeeResponseDTO.getPostcode());
+        dto.setCity(employeeResponseDTO.getCity());
+        dto.setPhone(employeeResponseDTO.getPhone());
+
+        List<Qualification > skillSet = employeeResponseDTO.getSkillSet().stream()
+                .map(this::map)
+                .toList();
+
+        dto.setSkillSet(skillSet);
+        return dto;
+    }
+
+    private Qualification  map(QualificationGetDTO qualificationGetDTO) {
+        Qualification  dto = new Qualification ();
+        dto.setId(qualificationGetDTO.getId());
+        dto.setSkill(qualificationGetDTO.getSkill());
+        return dto;
+    }
+
+
+    public Project map(Project project, UpdateProjectDTO dto) {
+        project.setName(dto.getName());
+        project.setGoal(dto.getGoal());
+        project.setCustomerId(dto.getCustomerId());
+        project.setAdministratorId(dto.getAdministratorId());
+        project.setStart(dto.getStart());
+        project.setPlannedEnd(dto.getPlannedEnd());
+        return project;
+    }
 }

src/main/java/de/hmmh/pmt/util/Validator.java

@@ -0,0 +1,48 @@
+package de.hmmh.pmt.util;
+
+import de.hmmh.pmt.db.Allocation;
+import de.hmmh.pmt.db.Project;
+import jakarta.validation.ConstraintViolation;
+import jakarta.validation.Validation;
+import org.springframework.stereotype.Component;
+
+import java.time.LocalDateTime;
+import java.time.ZoneOffset;
+import java.util.List;
+import java.util.Set;
+
+@Component
+public class Validator {
+
+    public boolean isValidProject(Project project) {
+        jakarta.validation.Validator validator = Validation
+                .buildDefaultValidatorFactory()
+                .getValidator();
+        Set<ConstraintViolation<Project>> violations = validator.validate(project);
+
+        LocalDateTime start = project.getStart();
+        LocalDateTime plannedEnd = project.getPlannedEnd();
+        LocalDateTime realEnd = project.getRealEnd();
+
+        return violations.isEmpty() &&
+                plannedEnd.isAfter(start) &&
+                (realEnd == null || realEnd.isAfter(start));
+    }
+
+    public boolean areAllocationTimeRangesOverlapping(
+            LocalDateTime start,
+            LocalDateTime plannedEnd,
+            List<Allocation> allocations
+    ){
+        long startUnix = start.toEpochSecond(ZoneOffset.UTC);
+        long plannedEndUnix = plannedEnd.toEpochSecond(ZoneOffset.UTC);
+        return allocations.stream()
+                .map(Allocation::getProject)
+                .anyMatch(allocatedProject -> {
+                    long allocatedStart = allocatedProject.getStart().toEpochSecond(ZoneOffset.UTC);
+                    long allocatedPlannedEnd = allocatedProject.getPlannedEnd().toEpochSecond(ZoneOffset.UTC);
+                    return Math.max(startUnix, allocatedStart) <= Math.min(plannedEndUnix, allocatedPlannedEnd);
+                });
+    }
+
+}

src/main/resources/spotbugs-exclude.xml

@@ -1,12 +1,7 @@
 <FindBugsFilter xmlns="https://raw.githubusercontent.com/spotbugs/spotbugs/4.8.6/spotbugs/etc/findbugsfilter.xsd">
     <Match>
-        <!-- We Want This Exposure of Resources the Way it is for our usage -->
+        <Source name="~.*"/>
-        <Class name="de.hmmh.pmt.employee.ApiClientFactory"/>
+        <Bug code="EI,EI2"/> <!-- We don't care about these codes -->
-        <Bug code="M,V,EI"/>
-    </Match>
-    <Match>
-        <Class name="de.hmmh.pmt.db.Allocation"/>
-        <Bug code="M,V,EI,EI2"/>
     </Match>
     <Match>
         <!--Ignore Auto Generated Code -->

src/test/java/de/hmmh/pmt/IntegrationTest.java

@@ -114,6 +114,15 @@ public abstract class IntegrationTest {
         medicalResearchProject.setPlannedEnd(LocalDateTime.of(2026, 8, 20, 9, 15));
         projects.put("medical-research", medicalResearchProject);
 
+        Project futureResearchProject = new Project();
+        futureResearchProject.setName("What is the Future?");
+        futureResearchProject.setGoal("Develop new Future (possibly through Genocide).");
+        futureResearchProject.setCustomerId(95L);
+        futureResearchProject.setAdministratorId(TEST_EMPLOYEE_A_ID);
+        futureResearchProject.setStart(LocalDateTime.of(2077, 1, 12, 2, 0));
+        futureResearchProject.setPlannedEnd(LocalDateTime.of(3000, 6, 19, 4, 0));
+        projects.put("future-research", futureResearchProject);
+
         Project overlappingProjectA = new Project();
         overlappingProjectA.setName("Overlap A");
         overlappingProjectA.setGoal("A Project That Overlaps with another one for Testing");
@@ -165,6 +174,30 @@ public abstract class IntegrationTest {
         allocation1ToOverlapA.setRole(TEST_QUALIFICATION_A_ID);
         allocations.put("1>overlap-a", allocation1ToOverlapA);
 
+        Allocation allocation1ToSpaceStation = new Allocation();
+        allocation1ToSpaceStation.setProject(allProjects.get("space-station"));
+        allocation1ToSpaceStation.setEmployeeId(TEST_EMPLOYEE_A_ID);
+        allocation1ToSpaceStation.setRole(TEST_QUALIFICATION_A_ID);
+        allocations.put("1>space-station", allocation1ToSpaceStation);
+
+        Allocation allocation1ToAiResearch = new Allocation();
+        allocation1ToAiResearch.setProject(allProjects.get("ai-research"));
+        allocation1ToAiResearch.setEmployeeId(TEST_EMPLOYEE_A_ID);
+        allocation1ToAiResearch.setRole(TEST_QUALIFICATION_A_ID);
+        allocations.put("1>ai-research", allocation1ToAiResearch);
+
+        Allocation allocation1ToMedical = new Allocation();
+        allocation1ToMedical.setProject(allProjects.get("medical-research"));
+        allocation1ToMedical.setEmployeeId(TEST_EMPLOYEE_A_ID);
+        allocation1ToMedical.setRole(TEST_QUALIFICATION_A_ID);
+        allocations.put("1>medical-research", allocation1ToMedical);
+
+        Allocation allocation1ToFuture = new Allocation();
+        allocation1ToFuture.setProject(allProjects.get("future-research"));
+        allocation1ToFuture.setEmployeeId(TEST_EMPLOYEE_A_ID);
+        allocation1ToFuture.setRole(TEST_QUALIFICATION_A_ID);
+        allocations.put("1>future-research", allocation1ToFuture);
+
         allocationRepository.saveAllAndFlush(allocations.values());
         return allocations;
     }

src/test/java/de/hmmh/pmt/project/CompleteTest.java

@@ -0,0 +1,31 @@
+package de.hmmh.pmt.project;
+
+import de.hmmh.pmt.IntegrationTest;
+import de.hmmh.pmt.db.Project;
+import org.junit.jupiter.api.Test;
+
+import java.util.Map;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+public class CompleteTest extends IntegrationTest {
+
+    @Test
+    void shouldReturnNotFoundWhenProjectDoesntExist() throws Exception {
+        this.mvc
+                .perform(post(baseUri + "/project/0/completed"))
+                .andExpect(status().isNotFound());
+    }
+
+    @Test
+    void successfullyComplete() throws Exception {
+
+        Map<String, Project> allProjects = createTestProjectData();
+        Project projectToComplete = allProjects.get("medical-research");
+
+        this.mvc
+                .perform(post(baseUri + "/project/" + projectToComplete.getId() + "/completed"))
+                .andExpect(status().isNoContent());
+    }
+}

src/test/java/de/hmmh/pmt/project/DeleteEmployeeTest.java

@@ -0,0 +1,59 @@
+package de.hmmh.pmt.project;
+
+import static org.mockito.Mockito.when;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.delete;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.servlet.RequestBuilder;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.web.client.HttpClientErrorException;
+
+import de.hmmh.pmt.IntegrationTest;
+import de.hmmh.pmt.db.Allocation;
+import de.hmmh.pmt.db.Project;
+import de.hmmh.pmt.dtos.AddEmployeeDTO;
+
+public class DeleteEmployeeTest extends IntegrationTest {
+    @Test
+    void shouldNotDeleteEmployeeWhenProjectIsNotFound() throws Exception {
+        mvc
+            .perform(delete(baseUri + "/project/1"))
+            .andExpect(status().isNotFound())
+        ;
+    }
+
+    @Test
+    void shouldNotDeleteEmployeeWhenEmployeeIsNotAllocated() throws Exception {
+        when(this.mockEmployeeApi.findById(Mockito.anyLong()))
+            .thenThrow(new HttpClientErrorException(HttpStatus.NOT_FOUND));
+
+        Map<String, Project> allProjects = createTestProjectData();
+
+        this.mvc
+            .perform(getRequest(allProjects.get("research-lab").getId(), 0L))
+            .andExpect(status().isNotFound());
+    }
+
+    @Test
+    void employeeSuccessfullyDeletedFromProject() throws Exception {
+        Map<String, Project> allProjects = createTestProjectData();
+        Map<String, Allocation> allAllocations = createTestAllocationData(allProjects);
+        Allocation allocation = allAllocations.get("1>space-station");
+
+        this.mvc
+            .perform(getRequest(allocation.getProjectId(),allocation.getEmployeeId()))
+            .andExpect(status().isNoContent());
+
+    }
+
+    private RequestBuilder getRequest(Long projectId, Long employeeId) {
+        return MockMvcRequestBuilders
+            .delete(baseUri + "/project/" + projectId + "/employee/" + employeeId);
+    }
+}

src/test/java/de/hmmh/pmt/project/EditTest.java

@@ -0,0 +1,137 @@
+package de.hmmh.pmt.project;
+
+import de.hmmh.pmt.IntegrationTest;
+import de.hmmh.pmt.db.Allocation;
+import de.hmmh.pmt.db.Project;
+import de.hmmh.pmt.dtos.UpdateProjectDTO;
+import de.hmmh.pmt.employee.dtos.EmployeeResponseDTO;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.servlet.RequestBuilder;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.web.client.HttpClientErrorException;
+
+import java.time.LocalDateTime;
+import java.util.Map;
+
+import static org.mockito.Mockito.when;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+public class EditTest extends IntegrationTest {
+
+    @Test
+    void successfullyRenamed() throws Exception {
+        when(this.mockEmployeeApi.findById(Mockito.anyLong()))
+                .thenReturn(new EmployeeResponseDTO());
+
+        Map<String, Project> allProjects = createTestProjectData();
+        Project projectToEdit = allProjects.get("medical-research");
+
+        UpdateProjectDTO dto = getDto(projectToEdit);
+        dto.setName("Mafia Drug Ring");
+
+        this.mvc
+                .perform(getRequest(projectToEdit.getId(), dto))
+                .andExpect(status().isNoContent());
+    }
+
+    @Test
+    void shouldReturnNotFoundWhenProjectDoesntExist() throws Exception {
+        when(this.mockEmployeeApi.findById(Mockito.anyLong()))
+                .thenReturn(new EmployeeResponseDTO());
+
+        Map<String, Project> allProjects = createTestProjectData();
+        Project projectToEdit = allProjects.get("medical-research");
+
+        UpdateProjectDTO dto = getDto(projectToEdit);
+
+        this.mvc
+                .perform(getRequest(0L, dto))
+                .andExpect(status().isNotFound());
+    }
+
+    @Test
+    void shouldReturnNotFoundWhenNewAdministratorDoesntExist() throws Exception {
+        when(this.mockEmployeeApi.findById(Mockito.anyLong()))
+                .thenThrow(new HttpClientErrorException(HttpStatus.NOT_FOUND));
+
+        Map<String, Project> allProjects = createTestProjectData();
+        Project projectToEdit = allProjects.get("medical-research");
+
+        UpdateProjectDTO dto = getDto(projectToEdit);
+
+        this.mvc
+                .perform(getRequest(projectToEdit.getId(), dto))
+                .andExpect(status().isNotFound());
+    }
+
+    @Test
+    void shouldReturnUnprocessableWhenNewTimestampsAreInvalid() throws Exception {
+        when(this.mockEmployeeApi.findById(Mockito.anyLong()))
+                .thenReturn(new EmployeeResponseDTO());
+
+        Map<String, Project> allProjects = createTestProjectData();
+        Project projectToEdit = allProjects.get("medical-research");
+
+        UpdateProjectDTO dto = getDto(projectToEdit);
+        dto.setPlannedEnd(dto.getStart().minusDays(1));
+
+        this.mvc
+                .perform(getRequest(projectToEdit.getId(), dto))
+                .andExpect(status().isUnprocessableEntity());
+    }
+
+    @Test
+    void shouldReturnConflictWhenUpdateWouldCreateNameConflict() throws Exception {
+        when(this.mockEmployeeApi.findById(Mockito.anyLong()))
+                .thenReturn(new EmployeeResponseDTO());
+
+        Map<String, Project> allProjects = createTestProjectData();
+        Project projectToEdit = allProjects.get("medical-research");
+
+        UpdateProjectDTO dto = getDto(projectToEdit);
+        dto.setName(allProjects.get("renewable-energy").getName());
+
+        this.mvc
+                .perform(getRequest(projectToEdit.getId(), dto))
+                .andExpect(status().isConflict());
+    }
+
+    @Test
+    void shouldReturnConflictWhenAllocationsWouldConflictAfterUpdate() throws Exception {
+        when(this.mockEmployeeApi.findById(Mockito.anyLong()))
+                .thenReturn(new EmployeeResponseDTO());
+
+        Map<String, Project> allProjects = createTestProjectData();
+        Map<String, Allocation> allAllocations = createTestAllocationData(allProjects);
+        Project projectToEdit = allAllocations.get("1>future-research").getProject();
+
+        UpdateProjectDTO dto = getDto(projectToEdit);
+        dto.setStart(LocalDateTime.of(1970, 1, 1, 0, 0));
+        dto.setStart(LocalDateTime.of(3000, 1, 1, 0, 0));
+
+        this.mvc
+                .perform(getRequest(projectToEdit.getId(), dto))
+                .andExpect(status().isConflict());
+    }
+
+    private UpdateProjectDTO getDto(Project project) {
+        UpdateProjectDTO dto = new UpdateProjectDTO();
+        dto.setName(project.getName());
+        dto.setGoal(project.getGoal());
+        dto.setCustomerId(project.getCustomerId());
+        dto.setAdministratorId(project.getAdministratorId());
+        dto.setStart(project.getStart());
+        dto.setPlannedEnd(project.getPlannedEnd());
+        return dto;
+    }
+
+    private RequestBuilder getRequest(long id, UpdateProjectDTO dto) throws Exception {
+        return MockMvcRequestBuilders
+                .put(baseUri + "/project/" + id)
+                .content(this.objectMapper.writeValueAsString(dto))
+                .contentType(MediaType.APPLICATION_JSON);
+    }
+}

src/test/java/de/hmmh/pmt/project/GetAllEmployeesByProjectTest.java

@@ -0,0 +1,66 @@
+package de.hmmh.pmt.project;
+
+import de.hmmh.pmt.IntegrationTest;
+import de.hmmh.pmt.db.Project;
+import org.junit.jupiter.api.Test;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.servlet.RequestBuilder;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.web.client.RestClientException;
+
+
+import java.util.Map;
+
+
+import static org.mockito.Mockito.when;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+public class GetAllEmployeesByProjectTest extends IntegrationTest {
+
+    @Test
+    void shouldReturnNotFoundWhenProjectDoesNotExist() throws Exception {
+        createTestProjectData();
+
+        this.mvc
+                .perform(getRequest(50L))
+                .andExpect(status().isNotFound());
+    }
+
+    @Test
+    void shouldReturnOkWhenProjectHasNoEmployees() throws Exception {
+        Map<String, Project> allProjects = createTestProjectData();
+
+        this.mvc
+                .perform(getRequest(allProjects.get("research-lab").getId()))
+                .andExpect(status().isOk());
+    }
+
+    @Test
+    void shouldReturnListOfEmployeesWhenAllParametersAreValid() throws Exception {
+        Map<String, Project> allProjects = createTestProjectData();
+        createTestAllocationData(allProjects);
+
+        this.mvc
+                .perform(getRequest(allProjects.get("ai-research").getId()))
+                .andExpect(status().isOk());
+    }
+
+    @Test
+    void shouldReturnInternalServer() throws Exception {
+        when(this.mockEmployeeApi.findAll1())
+                .thenThrow(new RestClientException("Internal Server Error"));
+
+        Map<String, Project> allProjects = createTestProjectData();
+        createTestAllocationData(allProjects);
+
+        this.mvc
+                .perform(getRequest(allProjects.get("ai-research").getId()))
+                .andExpect(status().isInternalServerError());
+    }
+
+    private RequestBuilder getRequest(Long projectId) {
+        return MockMvcRequestBuilders
+                .get(baseUri + "/project/" + projectId + "/employees")
+                .contentType(MediaType.APPLICATION_JSON);
+    }
+}