fix typo

Author: koromiko

MVVMPlayground/MVVMPlayground/Module/PhotoList/PhotoListViewModel.swift

@@ -12,12 +12,12 @@ class PhotoListViewModel {
 
     let apiService: APIServiceProtocol
 
-    var photos: [Photo] = [Photo]()
+    private var photos: [Photo] = [Photo]()
 
-    var cellViewMdoels: [PhotoListCellViewModel] = [PhotoListCellViewModel]()
+    private var cellViewModels: [PhotoListCellViewModel] = [PhotoListCellViewModel]()
 
     var numberOfCells: Int {
-        return cellViewMdoels.count
+        return cellViewModels.count
     }
 
     var isAllowSegue: Bool = false
@@ -44,7 +44,7 @@ class PhotoListViewModel {
     }
 
     func getCellViewModel( at indexPath: IndexPath ) -> PhotoListCellViewModel {
-        return cellViewMdoels[indexPath.row]
+        return cellViewModels[indexPath.row]
     }
 
     func createCellViewModel( photo: Photo ) -> PhotoListCellViewModel {
@@ -73,7 +73,7 @@ class PhotoListViewModel {
         for photo in photos {
             vms.append( createCellViewModel(photo: photo) )
         }
-        self.cellViewMdoels = vms
+        self.cellViewModels = vms
     }
 
 }

MVVMPlayground/MVVMPlaygroundTests/PhotoListViewModelTests.swift

@@ -121,7 +121,7 @@ class PhotoListViewModelTests: XCTestCase {
 
         //Given a sut with fetched photos
         let indexPath = IndexPath(row: 0, section: 0)
-        sut?.photos = PhotoStub().stubPhotos()
+        sutFinishedFetchPhotos()
 
         //When
         sut!.userPressed( at: indexPath )
@@ -136,7 +136,8 @@ class PhotoListViewModelTests: XCTestCase {
 
         //Given a sut with fetched photos
         let indexPath = IndexPath(row: 4, section: 0)
-        sut!.photos = PhotoStub().stubPhotos()
+        sutFinishedFetchPhotos()
+        
         let expect = XCTestExpectation(description: "Alert message is shown")
         sut!.showAlertClosure = { message in
             expect.fulfill()
@@ -156,12 +157,10 @@ class PhotoListViewModelTests: XCTestCase {
     func test_get_cell_view_model() {
 
         //Given a sut with fetched photos
-        mockAPIService?.completePhotos = PhotoStub().stubPhotos()
-        sut!.viewIsReady()
-        mockAPIService?.fetchSuccess()
+        sutFinishedFetchPhotos()
 
         let indexPath = IndexPath(row: 1, section: 0)
-        let testPhoto = sut!.photos[indexPath.row]
+        let testPhoto = mockAPIService!.completePhotos![indexPath.row]
 
         // When
         let vm = sut!.getCellViewModel(at: indexPath)
@@ -171,6 +170,12 @@ class PhotoListViewModelTests: XCTestCase {
 
     }
 
+    private func sutFinishedFetchPhotos() {
+        mockAPIService!.completePhotos = PhotoStub().stubPhotos()
+        sut!.viewIsReady()
+        mockAPIService!.fetchSuccess()
+    }
+    
 }
 
 class MockApiService: APIServiceProtocol {