In chapter 4 ImplementingInputViewController the test from the book
"test_Save_UsesGeocoderToGetCoordinateFromAddress" is failing.
The problem is the dateFormatter.dateFormat . In the test it has the timestamp and it can convert it to string correctly but
in the viewController it can't convert to the correct timestamp/date from the string due to missing information in the string.
What i did to make the test pass was to add information about the hour, minute, second and time zone. I did this by changing
this line the dateFormat string to "MM/dd/yyyy HH:mm:ssZZZZZ" in both the test and the viewController.
Hope this helps someone who wondered like me why it fails :)

please i want teh answer for this excercise from the book

https://stackoverflow.com/questions/73858484/testing-tableview-reloaddata

How to check at the end of Chapter 6 that tableview reloaded?
I try:

 func test_ItemListViewController_ReloaddataOnViewWillAppear() {
        let mockTableView = MockTableView()

        sut.tableView = mockTableView
        
        sut.beginAppearanceTransition(true, animated: true)
        sut.endAppearanceTransition()
        
        XCTAssertTrue(mockTableView.tableViewReloaded)
    }

extension ItemListViewControllerTest {
    class MockTableView: UITableView {
        var tableViewReloaded = false
        
        override func reloadData() {
            tableViewReloaded = true
        }
     }
}

but it not works.