Add PeopleListNavigator unit tests

SWDestinyTrades/Classes/PeopleList/Controller/PeopleListViewController.swift

@@ -13,8 +13,9 @@ protocol UpdateTableDataDelegate: AnyObject {
 }
 
 final class PeopleListViewController: UIViewController, UpdateTableDataDelegate {
+
     private lazy var peopleListView = PeopleListTableView(delegate: self)
-    private lazy var navigator = PeopleListNavigator(self.navigationController)
+    private lazy var navigator = PeopleListNavigator(self)
     private let database: DatabaseProtocol?
 
     // MARK: - Life Cycle

SWDestinyTrades/Classes/PeopleList/Navigator/PeopleListNavigator.swift

@@ -9,24 +9,24 @@
 import UIKit
 
 final class PeopleListNavigator: Navigator {
+
     enum Destination {
         case loanDetail(database: DatabaseProtocol?, with: PersonDTO)
         case newPerson(with: UpdateTableDataDelegate)
     }
 
-    private weak var navigationController: UINavigationController?
+    private weak var viewController: UIViewController?
 
     // MARK: - Initializer
 
-    init(_ navigationController: UINavigationController?) {
-        self.navigationController = navigationController
+    init(_ viewController: UIViewController?) {
+        self.viewController = viewController
     }
 
     // MARK: - Navigator
 
     func navigate(to destination: Destination) {
-        let viewController = makeViewController(for: destination)
-        navigationController?.pushViewController(viewController, animated: true)
+        viewController?.navigationController?.pushViewController(makeViewController(for: destination), animated: true)
     }
 
     // MARK: - Private

SWDestinyTradesTests/Screens/PeopleList/Navigator/PeopleListNavigatorTests.swift

@@ -0,0 +1,43 @@
+//
+//  PeopleListNavigatorTests.swift
+//  SWDestinyTradesTests
+//
+//  Created by Diogo Autilio on 01/03/24.
+//  Copyright © 2024 Diogo Autilio. All rights reserved.
+//
+
+import UIKit
+import XCTest
+
+@testable import SWDestinyTrades
+
+final class PeopleListNavigatorTests: XCTestCase {
+
+    private var sut: PeopleListNavigator!
+    private var navigationController: UINavigationControllerMock!
+
+    override func setUp() {
+        super.setUp()
+        let controller = UIViewController()
+        navigationController = UINavigationControllerMock(rootViewController: controller)
+        sut = PeopleListNavigator(controller)
+    }
+
+    override func tearDown() {
+        navigationController = nil
+        sut = nil
+        super.tearDown()
+    }
+
+    func test_navigate_to_loansDetailViewController() {
+        sut.navigate(to: .loanDetail(database: nil, with: .stub()))
+
+        XCTAssertTrue(navigationController.currentPushedViewController is LoansDetailViewController)
+    }
+
+    func test_navigate_to_newPersonViewController() {
+        sut.navigate(to: .newPerson(with: UpdateTableDataDelegateSpy()))
+
+        XCTAssertTrue(navigationController.currentPushedViewController is NewPersonViewController)
+    }
+}