feat: adds Testing for Employee & EmployeeManager Methods

Author: TatsuyaRyujin

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

@@ -45,4 +45,8 @@ public double getSalary() {
   public void setSalary(double salary) {
     this.salary = salary;
   }
+
+  public String getDetails() {
+    return "ID: " + this.id + " Name: " + this.name + " Department: " + this.department + " Salary " + this.salary; 
+  }
 }

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

@@ -1,6 +1,7 @@
 package com.codedifferently.lesson15;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import org.junit.jupiter.api.Test;
 
@@ -16,4 +17,106 @@ public void testGetGreeting() {
     // Act
     Lesson15.main(null);
   }
+
+  @Test
+  public void testGetId() {
+    Employee employee1 = new Employee(1999, "SpongeBob", "Krusty Krab", 100.0);
+
+    assertEquals(1999, employee1.getId());
+  }
+
+  @Test
+  public void testSetId() {
+    Employee employee1 = new Employee(1999, "Bob", "Builder", 500.0);
+    employee1.setId(2015);
+
+    assertEquals(2015, employee1.getId());
+  }
+
+  @Test
+  public void testGetName() {
+    Employee employee1 = new Employee(1985, "Mario", "Plumber", 999.0);
+
+    assertEquals("Mario", employee1.getName());
+  }
+
+  @Test
+  public void testSetName() {
+    Employee employee1 = new Employee(1965, "Tony", "Chef", 3000.0);
+    employee1.setName("Touk");
+
+    assertEquals("Touk", employee1.getName());
+  }
+
+  @Test
+  public void testGetDepartment() {
+    Employee employee1 = new Employee(2007, "Remy", "Chef", 1000.0);
+
+    assertEquals("Chef", employee1.getDepartment());
+  }
+
+  @Test
+  public void testSetDepartment() {
+    Employee employee1 = new Employee(2000, "Yuki Tsunoda", "VCarb", 2200.0);
+    employee1.setDepartment("Redbull");
+
+    assertEquals("Redbull", employee1.getDepartment());
+  }
+
+  @Test
+  public void testGetSalary() {
+    Employee employee1 = new Employee(0104, "Krispy", "Computer Engineer", 4000.0);
+
+    assertEquals(4000.0, employee1.getSalary());
+  }
+
+  @Test
+  public void testSetSalary() {
+    Employee employee1 = new Employee(1986, "Takumi", "Delivery", 50.0);
+    employee1.setSalary(100.0);
+
+    assertEquals(100.0, employee1.getSalary());
+  }
+
+  @Test
+  public void testAddEmployee() {
+    EmployeeManager manager = new EmployeeManager();
+    Employee employee1 = new Employee(1942, "Bob", "Artist", 1.0);
+
+    assertEquals(0, manager.getEmployeeCount());
+
+    manager.addEmployee(employee1);
+    assertEquals(1, manager.getEmployeeCount());
+  }
+
+  @Test
+  public void testGetEmployee() {
+    EmployeeManager manager = new EmployeeManager();
+    Employee employee1 = new Employee(1985, "Lewis", "Ferrari", 80000000.0);
+    manager.addEmployee(employee1);
+
+    assertEquals(employee1, manager.getEmployee(1985));
+  }
+
+  @Test
+  public void testRemoveEmployee() {
+    EmployeeManager manager = new EmployeeManager();
+    Employee employee1 = new Employee(1981, "Fernando", "Aston Martin", 1000000.0);
+    Employee employee2 = new Employee(1998, "Lance", "Aston Martin", 1.0);
+    manager.addEmployee(employee1);
+    manager.addEmployee(employee2);
+
+    assertEquals(2, manager.getEmployeeCount());
+    manager.removeEmployee(1998);
+    assertEquals(1, manager.getEmployeeCount());
+  }
+
+  @Test
+  public void testGetEmplopyeeCount() {
+    EmployeeManager manager = new EmployeeManager();
+    Employee employee1 = new Employee(2004, "Evan", "Tech", 8000.0);
+    manager.addEmployee(employee1);
+
+    assertEquals(1, manager.getEmployeeCount());
+  }
 }