ex-1: throw error if employee type is invalid at createEmployee

Author: kaiosilveira

src/example-01/emplyees/factory/index.js

@@ -11,6 +11,7 @@ export const createEmployee = (name, type) => {
       return new Salesman(name);
     case 'manager':
       return new Manager(name);
+    default:
+      throw new Error(`Employee cannot be of type ${type}`);
   }
-  return new Employee(name, type);
 };

src/example-01/emplyees/factory/index.test.js

@@ -22,4 +22,8 @@ describe('createEmployee', () => {
     expect(employee.type).toBe('manager');
     expect(employee instanceof Manager).toBe(true);
   });
+
+  it('should throw an error for an unknown type', () => {
+    expect(() => createEmployee('Kaio', 'invalid')).toThrow('Employee cannot be of type invalid');
+  });
 });