Add two tests.

Author: josealonso

exercises/concept/tim-from-marketing-2/.meta/src/reference/java/Employee.java

@@ -29,10 +29,12 @@ public String getDepartment() {
 
     @Override
     public boolean equals(Object o) {
-        if (this == o)
+        if (this == o) {
             return true;
-        if (o == null || getClass() != o.getClass())
+        }
+        if (o == null || getClass() != o.getClass()) {
             return false;
+        }
         Employee employee = (Employee) o;
         return id == employee.id && Objects.equals(name, employee.name)
                 && Objects.equals(department, employee.department);

exercises/concept/tim-from-marketing-2/.meta/src/reference/java/EmployeeDatabase.java

@@ -26,12 +26,13 @@ public String getEmployeeDetailsById(int employeeId) {
         nullableEmployee.ifPresentOrElse(
                 employee1 -> {
                     Optional.ofNullable(employee1.getName())
-                            .ifPresentOrElse(name -> stringBuilder.append(employeeId).append(" - ")
-                                    .append(employee1.getName()).append(" - ")
-                                    .append(employee1.getDepartment()),
-                            () -> {
-                                stringBuilder.append("No employee found for id: ").append(employeeId);
-                            });
+                            .ifPresentOrElse(name -> stringBuilder
+                                                .append(employeeId).append(" - ")
+                                                .append(employee1.getName()).append(" - ")
+                                                .append(employee1.getDepartment()),
+                                            () -> {
+                                                stringBuilder.append("No employee found for id: ").append(employeeId);
+                                            });
                 },
                 () -> {
                     stringBuilder.append("That id does not exist: ").append(employeeId);

exercises/concept/tim-from-marketing-2/src/test/java/EmployeeDatabaseTest.java

@@ -18,6 +18,8 @@ void initList() {
         listOfEmployees.add(new Employee(2, "Joe", "Sales"));
         listOfEmployees.add(new Employee(3, "Jane", "IT"));
         listOfEmployees.add(new Employee(4, null, null));
+        listOfEmployees.add(new Employee(5, null, "IT"));
+        listOfEmployees.add(new Employee(6, "Alice", null));
     }
 
     @BeforeEach
@@ -76,9 +78,25 @@ void retrieveEmployeeDetailsById_withNullFields() {
 
     @Test
     @Tag("task:7")
+    @DisplayName("Retrieve employee details by id when name is null and department is not null")
+    void retrieveEmployeeDetailsById_whenNameIsNull() {
+        assertThat(employeeDatabase.getEmployeeDetailsById(5))
+                .isEqualTo("No employee found for id: 5");
+    }
+
+    @Test
+    @Tag("task:8")
+    @DisplayName("Retrieve employee details by id when department is null and name is not null")
+    void retrieveEmployeeDetailsById_whenDepartmentIsNull() {
+        assertThat(employeeDatabase.getEmployeeDetailsById(6))
+                .isEqualTo("No employee found for id: 6");
+    }
+
+    @Test
+    @Tag("task:9")
     @DisplayName("Retrieve employee details by id when the id does not exist")
     void retrieveEmployeeDetailsById_forANonExistingId() {
-        assertThat(employeeDatabase.getEmployeeDetailsById(7))
-                .isEqualTo("No employee found for id: 7");
+        assertThat(employeeDatabase.getEmployeeDetailsById(10))
+                .isEqualTo("No employee found for id: 10");
     }
 }