Cycle 6: RED, Service: save employee

src/main/java/tddexample/repository/EmployeeRepository.java

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+package tddexample.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import tddexample.model.entity.Employee;
+
+public interface EmployeeRepository extends JpaRepository<Employee, Integer> {
+
+
+}

src/test/java/tddexample/service/EmployeeServiceTest.java

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+package tddexample.service;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+import tddexample.model.entity.Employee;
+import tddexample.model.rest.EmployeeSaveRequest;
+import tddexample.repository.EmployeeRepository;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.*;
+
+@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_CLASS)
+@ExtendWith(SpringExtension.class)
+@SpringBootTest
+public class EmployeeServiceTest {
+
+    @Autowired
+    private EmployeeService employeeService;
+
+    @MockBean
+    private EmployeeRepository employeeRepository;
+
+    @Test
+    public void shouldSaveEmployee(){
+        Employee employee = new Employee(20, "Frodo Baggins");
+        when(employeeRepository.save(new Employee(null, "Frodo Baggins")))
+                .thenReturn(employee);
+
+        EmployeeSaveRequest request = new EmployeeSaveRequest("Frodo Baggins");
+        Employee savedEmployee = employeeService.saveEmployee(request);
+
+        verify(employeeRepository,times(1)).save(any(Employee.class));
+        Assertions.assertEquals(employee,savedEmployee);
+    }
+
+}