From 70f7efcfa07b63a5b32dab8112750798ef440ff7 Mon Sep 17 00:00:00 2001
From: Dylan <dlafferty251@gmail.com>
Date: Mon, 7 Apr 2025 21:09:33 +0000
Subject: [PATCH 1/8] feat: add getDetails method to Employee class and
 corresponding test

---
 .../java/com/codedifferently/lesson15/Employee.java |  4 ++++
 .../com/codedifferently/lesson15/Lesson15Test.java  | 13 ++++++++++---
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java b/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java
index 49aaabbd7..9eb5436df 100644
--- a/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java
+++ b/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java
@@ -22,6 +22,10 @@ public void setId(int id) {
     this.id = id;
   }
 
+  public String getDetails() {
+    return "The Employee's ID: " + id + " Name: " + name + " Department: " + department + " Salary: " + salary;
+  }
+
   public String getName() {
     return name;
   }
diff --git a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
index cd6ef511e..87d262299 100644
--- a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
+++ b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
@@ -1,7 +1,6 @@
 package com.codedifferently.lesson15;
 
 import static org.assertj.core.api.Assertions.assertThat;
-
 import org.junit.jupiter.api.Test;
 
 class Lesson15Test {
@@ -13,7 +12,15 @@ public void testLesson15() {
 
   @Test
   public void testGetGreeting() {
-    // Act
-    Lesson15.main(null);
+    
+  }
+
+  @Test
+  public void testGetDetails() {
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+
+    String result = employee.getDetails();
+    String expected = "The Employee's ID: 1 Name: John Doe Department: Engineering Salary: 50000.0";
+    assertThat(result).isEqualTo(expected);
   }
 }

From 8df9809285687898de22a54eb23612c2a26759eb Mon Sep 17 00:00:00 2001
From: Dylan <dlafferty251@gmail.com>
Date: Tue, 8 Apr 2025 12:09:17 +0000
Subject: [PATCH 2/8] Feat: Adds 14 Test Cases inside Lesson15 Test, Also adds
 getter and setter for details

---
 .../codedifferently/lesson15/Employee.java    |  15 ++-
 .../lesson15/Lesson15Test.java                | 109 +++++++++++++++++-
 2 files changed, 122 insertions(+), 2 deletions(-)

diff --git a/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java b/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java
index 9eb5436df..c60bbee0f 100644
--- a/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java
+++ b/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() {
diff --git a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
index 87d262299..447980a29 100644
--- a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
+++ b/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
 }

From a30c1870d4bf44118d103ad5fb06c9abbde0b976 Mon Sep 17 00:00:00 2001
From: Dylan <dlafferty251@gmail.com>
Date: Tue, 8 Apr 2025 12:24:57 +0000
Subject: [PATCH 3/8] feat: add more tests to for the `input` command, Also
 adds comments to the code for easier reading

---
 .../codedifferently/lesson15/Employee.java    |  2 +
 .../lesson15/Lesson15Test.java                | 50 +++++++++++++++----
 2 files changed, 42 insertions(+), 10 deletions(-)

diff --git a/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java b/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java
index c60bbee0f..f80878b52 100644
--- a/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java
+++ b/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java
@@ -22,6 +22,7 @@ public void setId(int id) {
     this.id = id;
   }
 
+  // Method to get all details of an employee
   public String getDetails() {
     return "The Employee's ID: "
         + id
@@ -33,6 +34,7 @@ public String getDetails() {
         + salary;
   }
 
+  // Method to set all employee details at once
   public void setDetails(String name, String department, double salary) {
     this.name = name;
     this.department = department;
diff --git a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
index 447980a29..2fa9b8418 100644
--- a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
+++ b/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 org.junit.jupiter.api.Test;
 
 class Lesson15Test {
@@ -11,19 +12,19 @@ public void testLesson15() {
   }
 
   @Test
-  public void testGetGreeting() {
-    Lesson15 lesson15 = new Lesson15();
-    String result = lesson15.getGreeting();
-    String expected = "Hello, World!";
-    assertThat(result).isEqualTo(expected);
-  }
+  public void testGetGreeting() {}
 
+  // ------------
+  // Tests for Employee class
   @Test
   public void testGetDetails() {
+    // Create an instance of Employee by adding in temporary values
     Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
-
+    // This will call the getDetails method and store that in a variable called result
     String result = employee.getDetails();
+    // This will create a string that we expect the getDetails method to return
     String expected = "The Employee's ID: 1 Name: John Doe Department: Engineering Salary: 50000.0";
+    // This will compare the result of the getDetails method to the expected string
     assertThat(result).isEqualTo(expected);
   }
 
@@ -52,12 +53,13 @@ public void testSetId() {
     assertThat(result).isEqualTo(2);
   }
 
-  @Test  
+  @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);
@@ -80,12 +82,14 @@ public void testSetDepartment() {
     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);
@@ -93,6 +97,9 @@ public void testSetSalary() {
     double result = employee.getSalary();
     assertThat(result).isEqualTo(60000);
   }
+
+  // -------
+  // Tests for EmployeeManager class
   @Test
   public void testAddEmployee() {
     EmployeeManager employeeManager = new EmployeeManager();
@@ -100,6 +107,7 @@ public void testAddEmployee() {
     employeeManager.addEmployee(employee);
     assertThat(employeeManager.getEmployeeCount()).isEqualTo(1);
   }
+
   @Test
   public void testGetEmployee() {
     EmployeeManager employeeManager = new EmployeeManager();
@@ -108,6 +116,7 @@ public void testGetEmployee() {
     Employee result = employeeManager.getEmployee(1);
     assertThat(result).isEqualTo(employee);
   }
+
   @Test
   public void testUpdateEmployee() {
     EmployeeManager employeeManager = new EmployeeManager();
@@ -122,12 +131,33 @@ public void testUpdateEmployee() {
   @Test
   public void testRemoveEmployee() {
     EmployeeManager employeeManager = new EmployeeManager();
-    Employee employee = new  Employee(1, "John Doe", "Engineering", 50000);
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
     employeeManager.addEmployee(employee);
     employeeManager.removeEmployee(1);
     assertThat(employeeManager.getEmployeeCount()).isEqualTo(0);
   }
 
   @Test
-  public void test
+  public void testEmployeeCount() {
+    EmployeeManager employeeManager = new EmployeeManager();
+    Employee employee1 = new Employee(1, "John Doe", "Engineering", 50000);
+    Employee employee2 = new Employee(2, "Jane Doe", "Marketing", 60000);
+    employeeManager.addEmployee(employee1);
+    employeeManager.addEmployee(employee2);
+    int result = employeeManager.getEmployeeCount();
+    assertThat(result).isEqualTo(2);
+  }
+
+  @Test
+  public void assertEmployeeInCollection() {
+    EmployeeManager employeeManager = new EmployeeManager();
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    employeeManager.addEmployee(employee);
+    try {
+      employeeManager.getEmployee(1);
+    } catch (IllegalArgumentException e) {
+      // This should not happen
+      assertThat(e.getMessage()).isEqualTo("Employee does not in collection with id 1");
+    }
+  }
 }

From 646073d2f88cb48be3adb02a15d0f1cf1a1b7c02 Mon Sep 17 00:00:00 2001
From: Dylan <dlafferty251@gmail.com>
Date: Tue, 8 Apr 2025 20:13:45 +0000
Subject: [PATCH 4/8] feat: update setDetails method in Employee class to
 include employee ID

---
 .../src/main/java/com/codedifferently/lesson15/Employee.java   | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java b/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java
index f80878b52..63c5d11d0 100644
--- a/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java
+++ b/lesson_15/tdd/tdd_app/src/main/java/com/codedifferently/lesson15/Employee.java
@@ -35,7 +35,8 @@ public String getDetails() {
   }
 
   // Method to set all employee details at once
-  public void setDetails(String name, String department, double salary) {
+  public void setDetails(String name, String department, double salary, int id) {
+    this.id = id;
     this.name = name;
     this.department = department;
     this.salary = salary;

From 3536d93060b59d1c22bd9a79a43aad7188c2a953 Mon Sep 17 00:00:00 2001
From: Dylan <dlafferty251@gmail.com>
Date: Tue, 8 Apr 2025 20:18:25 +0000
Subject: [PATCH 5/8] feat: update setDetails method to include employee ID in
 Lesson15Test

---
 .../test/java/com/codedifferently/lesson15/Lesson15Test.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
index 2fa9b8418..4a4baada5 100644
--- a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
+++ b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
@@ -31,7 +31,7 @@ public void testGetDetails() {
   @Test
   public void testSetDetails() {
     Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
-    employee.setDetails("Jane Doe", "Marketing", 60000);
+    employee.setDetails("Jane Doe", "Marketing", 60000, 1);
 
     String result = employee.getDetails();
     String expected = "The Employee's ID: 1 Name: Jane Doe Department: Marketing Salary: 60000.0";

From 2e5d63a3fbceb705942ff279700f60fd33993a7b Mon Sep 17 00:00:00 2001
From: Dylan <dlafferty251@gmail.com>
Date: Wed, 9 Apr 2025 14:31:47 +0000
Subject: [PATCH 6/8] feat: Move unit tests for Employee and EmployeeManager
 into specified classes

---
 .../lesson15/EmployeeManagerTest.java         | 69 ++++++++++++++
 .../lesson15/EmployeeTest.java                | 89 +++++++++++++++++++
 .../lesson15/Lesson15Test.java                | 60 -------------
 3 files changed, 158 insertions(+), 60 deletions(-)
 create mode 100644 lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/EmployeeManagerTest.java
 create mode 100644 lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/EmployeeTest.java

diff --git a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/EmployeeManagerTest.java b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/EmployeeManagerTest.java
new file mode 100644
index 000000000..209ea0810
--- /dev/null
+++ b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/EmployeeManagerTest.java
@@ -0,0 +1,69 @@
+package com.codedifferently.lesson15;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.Test;
+
+public class EmployeeManagerTest {
+
+  @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 testEmployeeCount() {
+    EmployeeManager employeeManager = new EmployeeManager();
+    Employee employee1 = new Employee(1, "John Doe", "Engineering", 50000);
+    Employee employee2 = new Employee(2, "Jane Doe", "Marketing", 60000);
+    employeeManager.addEmployee(employee1);
+    employeeManager.addEmployee(employee2);
+    int result = employeeManager.getEmployeeCount();
+    assertThat(result).isEqualTo(2);
+  }
+
+  @Test
+  public void assertEmployeeInCollection() {
+    EmployeeManager employeeManager = new EmployeeManager();
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    employeeManager.addEmployee(employee);
+    try {
+      employeeManager.getEmployee(1);
+    } catch (IllegalArgumentException e) {
+      // This should not happen
+      assertThat(e.getMessage()).isEqualTo("Employee does not exist in collection with id 1");
+    }
+  }
+}
diff --git a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/EmployeeTest.java b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/EmployeeTest.java
new file mode 100644
index 000000000..2327de1f7
--- /dev/null
+++ b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/EmployeeTest.java
@@ -0,0 +1,89 @@
+import static org.assertj.core.api.Assertions.assertThat;
+
+import com.codedifferently.lesson15.Employee;
+import org.junit.jupiter.api.Test;
+
+public class EmployeeTest {
+
+  @Test
+  public void testGetDetails() {
+    // Create an instance of Employee by adding in temporary values
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    // This will call the getDetails method and store that in a variable called result
+    String result = employee.getDetails();
+    // This will create a string that we expect the getDetails method to return
+    String expected = "The Employee's ID: 1 Name: John Doe Department: Engineering Salary: 50000.0";
+    // This will compare the result of the getDetails method to the expected string
+    assertThat(result).isEqualTo(expected);
+  }
+
+  @Test
+  public void testSetDetails() {
+    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
+    employee.setDetails("Jane Doe", "Marketing", 60000, 1);
+
+    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);
+  }
+}
diff --git a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
index 4a4baada5..a046a79ae 100644
--- a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
+++ b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
@@ -99,65 +99,5 @@ public void testSetSalary() {
   }
 
   // -------
-  // Tests for EmployeeManager class
-  @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 testEmployeeCount() {
-    EmployeeManager employeeManager = new EmployeeManager();
-    Employee employee1 = new Employee(1, "John Doe", "Engineering", 50000);
-    Employee employee2 = new Employee(2, "Jane Doe", "Marketing", 60000);
-    employeeManager.addEmployee(employee1);
-    employeeManager.addEmployee(employee2);
-    int result = employeeManager.getEmployeeCount();
-    assertThat(result).isEqualTo(2);
-  }
-
-  @Test
-  public void assertEmployeeInCollection() {
-    EmployeeManager employeeManager = new EmployeeManager();
-    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
-    employeeManager.addEmployee(employee);
-    try {
-      employeeManager.getEmployee(1);
-    } catch (IllegalArgumentException e) {
-      // This should not happen
-      assertThat(e.getMessage()).isEqualTo("Employee does not in collection with id 1");
-    }
-  }
 }

From 85e73cd0d8fd2b3080c8906781a143eccb3b2459 Mon Sep 17 00:00:00 2001
From: Dylan <dlafferty251@gmail.com>
Date: Fri, 11 Apr 2025 18:55:04 +0000
Subject: [PATCH 7/8] feat: remove redundant test for setDetails method in
 Lesson15Test

---
 .../com/codedifferently/lesson15/Lesson15Test.java     | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
index a046a79ae..6acea20c8 100644
--- a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
+++ b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
@@ -1,7 +1,6 @@
 package com.codedifferently.lesson15;
 
 import static org.assertj.core.api.Assertions.assertThat;
-
 import org.junit.jupiter.api.Test;
 
 class Lesson15Test {
@@ -28,15 +27,6 @@ public void testGetDetails() {
     assertThat(result).isEqualTo(expected);
   }
 
-  @Test
-  public void testSetDetails() {
-    Employee employee = new Employee(1, "John Doe", "Engineering", 50000);
-    employee.setDetails("Jane Doe", "Marketing", 60000, 1);
-
-    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() {

From 260f5eaf42e4c5d14a06e1facf93fb01208d5643 Mon Sep 17 00:00:00 2001
From: Dylan <dlafferty251@gmail.com>
Date: Fri, 11 Apr 2025 18:55:19 +0000
Subject: [PATCH 8/8] feat: remove unused test method for getGreeting in
 Lesson15Test

---
 .../test/java/com/codedifferently/lesson15/Lesson15Test.java   | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
index 6acea20c8..ac2385f38 100644
--- a/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
+++ b/lesson_15/tdd/tdd_app/src/test/java/com/codedifferently/lesson15/Lesson15Test.java
@@ -10,9 +10,6 @@ public void testLesson15() {
     assertThat(new Lesson15()).isNotNull();
   }
 
-  @Test
-  public void testGetGreeting() {}
-
   // ------------
   // Tests for Employee class
   @Test