feat: adds tests for Employee and EmployeeManager classes

Author: mercedes-mathews

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

@@ -13,6 +13,17 @@ public Employee(int id, String name, String department, double salary) {
     this.salary = salary;
   }
 
+  public String getDetails() {
+    return "Employee ID: "
+        + id
+        + "\nEmployee Name: "
+        + name
+        + "\nDepartment: "
+        + department
+        + "\nSalary: "
+        + salary;
+  }
+
   // Getters and setters
   public int getId() {
     return id;

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

@@ -0,0 +1,68 @@
+package com.codedifferently.lesson15;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.Test;
+
+class EmployeeManagerTest {
+
+  @Test
+  public void testAddEmployee() {
+    // Arrange
+    EmployeeManager employees = new EmployeeManager();
+    Employee testEmployee = new Employee(123, "Mercedes", "Tech", 1000000);
+
+    // Act
+    employees.addEmployee(testEmployee);
+    int actual = employees.getEmployeeCount();
+
+    // Assert
+    assertThat(actual).isEqualTo(1);
+  }
+
+  @Test
+  public void testGetEmployee() {
+    // Arrange
+    EmployeeManager employees = new EmployeeManager();
+    Employee testEmployee = new Employee(123, "Mercedes", "Tech", 1000000);
+
+    // Act
+    employees.addEmployee(testEmployee);
+    Employee actualEmployee = employees.getEmployee(123);
+
+    // Assert
+    assertThat(actualEmployee).isNotNull();
+    assertThat(actualEmployee.getName()).isEqualTo("Mercedes");
+  }
+
+  @Test
+  public void testRemoveEmployee() {
+    // Arrange
+    EmployeeManager employees = new EmployeeManager();
+    Employee testEmployee = new Employee(123, "Mercedes", "Tech", 1000000);
+
+    // Act
+    employees.addEmployee(testEmployee);
+    employees.removeEmployee(123);
+    int actual = employees.getEmployeeCount();
+
+    // Assert
+    assertThat(actual).isEqualTo(0);
+  }
+
+  @Test
+  public void testGetEmployeeCount() {
+    // Arrange
+    EmployeeManager employees = new EmployeeManager();
+    Employee testEmployee = new Employee(123, "Mercedes", "Tech", 1000000);
+    Employee testEmployee2 = new Employee(456, "Anthony", "Tech", 1000000);
+
+    // Act
+    employees.addEmployee(testEmployee);
+    employees.addEmployee(testEmployee2);
+    int actual = employees.getEmployeeCount();
+
+    // Assert
+    assertThat(actual).isEqualTo(2);
+  }
+}

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

@@ -0,0 +1,122 @@
+package com.codedifferently.lesson15;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.Test;
+
+class EmployeeTest {
+
+  @Test
+  public void testGetId() {
+    // Arrange
+    Employee testEmployee = new Employee(123, "Mercedes", "Tech", 1000000);
+
+    // Act
+    int actual = testEmployee.getId();
+
+    // Assert
+    assertThat(actual).isEqualTo(123);
+  }
+
+  @Test
+  public void testSetId() {
+    // Arrange
+    Employee testEmployee = new Employee(123, "Mercedes", "Tech", 1000000);
+
+    // Act
+    testEmployee.setId(321);
+    int actual = testEmployee.getId();
+
+    // Assert
+    assertThat(actual).isEqualTo(321);
+  }
+
+  @Test
+  public void testGetName() {
+    // Arrange
+    Employee testEmployee = new Employee(123, "Mercedes", "Tech", 1000000);
+
+    // Act
+    String actual = testEmployee.getName();
+
+    // Assert
+    assertThat(actual).isEqualTo("Mercedes");
+  }
+
+  @Test
+  public void testSetName() {
+    // Arrange
+    Employee testEmployee = new Employee(123, "Mercedes", "Tech", 1000000);
+
+    // Act
+    testEmployee.setName("Anthony");
+    String actual = testEmployee.getName();
+
+    // Assert
+    assertThat(actual).isEqualTo("Anthony");
+  }
+
+  @Test
+  public void testGetDepartment() {
+    // Arrange
+    Employee testEmployee = new Employee(123, "Mercedes", "Tech", 1000000);
+
+    // Act
+    String actual = testEmployee.getDepartment();
+
+    // Assert
+    assertThat(actual).isEqualTo("Tech");
+  }
+
+  @Test
+  public void testSetDepartment() {
+    // Arrange
+    Employee testEmployee = new Employee(123, "Mercedes", "Tech", 1000000);
+
+    // Act
+    testEmployee.setDepartment("Marketing");
+    String actual = testEmployee.getDepartment();
+
+    // Assert
+    assertThat(actual).isEqualTo("Marketing");
+  }
+
+  @Test
+  public void testGetSalary() {
+    // Arrange
+    Employee testEmployee = new Employee(123, "Mercedes", "Tech", 1000000);
+
+    // Act
+    double actual = testEmployee.getSalary();
+
+    // Assert
+    assertThat(actual).isEqualTo(1000000);
+  }
+
+  @Test
+  public void testSetSalary() {
+    // Arrange
+    Employee testEmployee = new Employee(123, "Mercedes", "Tech", 1000000);
+
+    // Act
+    testEmployee.setSalary(5000000);
+    double actual = testEmployee.getSalary();
+
+    // Assert
+    assertThat(actual).isEqualTo(5000000);
+  }
+
+  @Test
+  public void testGetDetails() {
+    // Arrange
+    Employee testEmployee = new Employee(123, "Mercedes", "Tech", 1000000);
+
+    // Act
+    String actual = testEmployee.getDetails();
+
+    // Assert
+    assertThat(actual)
+        .isEqualTo(
+            "Employee ID: 123\nEmployee Name: Mercedes\nDepartment: Tech\nSalary: 1000000.0");
+  }
+}