Feat: Adds 14 Test Cases inside Lesson15 Test, Also adds getter and setter for details

Author: Dlafferty251

lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java

@@ -23,7 +23,20 @@ public void setId(int id) {
   }
 
   public String getDetails() {
-    return "The Employee's ID: " + id + " Name: " + name + " Department: " + department + " Salary: " + salary;
+    return "The Employee's ID: "
+        + id
+        + " Name: "
+        + name
+        + " Department: "
+        + department
+        + " Salary: "
+        + salary;
+  }
+
+  public void setDetails(String name, String department, double salary) {
+    this.name = name;
+    this.department = department;
+    this.salary = salary;
   }
 
   public String getName() {

lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java

@@ -12,7 +12,10 @@ public void testLesson15() {
 
   @Test
   public void testGetGreeting() {
-    
+    Lesson15 lesson15 = new Lesson15();
+    String result = lesson15.getGreeting();
+    String expected = "Hello, World!";
+    assertThat(result).isEqualTo(expected);
   }
 
   @Test
@@ -23,4 +26,108 @@ public void testGetDetails() {
     String expected = "The Employee's ID: 1 Name: John Doe Department: Engineering Salary: 50000.0";
     assertThat(result).isEqualTo(expected);
   }
+
+  @Test
+  public void testSetDetails() {
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    employee.setDetails("Jane Doe", "Marketing", 60000);
+
+    String result = employee.getDetails();
+    String expected = "The Employee's ID: 1 Name: Jane Doe Department: Marketing Salary: 60000.0";
+    assertThat(result).isEqualTo(expected);
+  }
+
+  @Test
+  public void testGetId() {
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    int result = employee.getId();
+    assertThat(result).isEqualTo(1);
+  }
+
+  @Test
+  public void testSetId() {
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    employee.setId(2);
+    int result = employee.getId();
+    assertThat(result).isEqualTo(2);
+  }
+
+  @Test  
+  public void testGetName() {
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    String result = employee.getName();
+    assertThat(result).isEqualTo("John Doe");
+  }
+  @Test
+  public void testSetName() {
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    employee.setName("Jane Doe");
+    String result = employee.getName();
+    assertThat(result).isEqualTo("Jane Doe");
+  }
+
+  @Test
+  public void testGetDepartment() {
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    String result = employee.getDepartment();
+    assertThat(result).isEqualTo("Engineering");
+  }
+
+  @Test
+  public void testSetDepartment() {
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    employee.setDepartment("Marketing");
+    String result = employee.getDepartment();
+    assertThat(result).isEqualTo("Marketing");
+  }
+  @Test
+  public void testGetSalary() {
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    double result = employee.getSalary();
+    assertThat(result).isEqualTo(50000);
+  }
+  @Test
+  public void testSetSalary() {
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    employee.setSalary(60000);
+    double result = employee.getSalary();
+    assertThat(result).isEqualTo(60000);
+  }
+  @Test
+  public void testAddEmployee() {
+    EmployeeManager employeeManager = new EmployeeManager();
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    employeeManager.addEmployee(employee);
+    assertThat(employeeManager.getEmployeeCount()).isEqualTo(1);
+  }
+  @Test
+  public void testGetEmployee() {
+    EmployeeManager employeeManager = new EmployeeManager();
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    employeeManager.addEmployee(employee);
+    Employee result = employeeManager.getEmployee(1);
+    assertThat(result).isEqualTo(employee);
+  }
+  @Test
+  public void testUpdateEmployee() {
+    EmployeeManager employeeManager = new EmployeeManager();
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    employeeManager.addEmployee(employee);
+    employee.setName("Jane Doe");
+    employeeManager.updateEmployee(employee);
+    Employee result = employeeManager.getEmployee(1);
+    assertThat(result.getName()).isEqualTo("Jane Doe");
+  }
+
+  @Test
+  public void testRemoveEmployee() {
+    EmployeeManager employeeManager = new EmployeeManager();
+    Employee employee = new  Employee(1, "John Doe", "Engineering", 50000);
+    employeeManager.addEmployee(employee);
+    employeeManager.removeEmployee(1);
+    assertThat(employeeManager.getEmployeeCount()).isEqualTo(0);
+  }
+
+  @Test
+  public void test
 }