Open Project Navigator and select the ToDoTests group. Add a new Unit Test Case Class and call it ItemListDataProviderTests. Add the @testable import ToDo import statement and remove the two test template methods.
The table view should have two sections--one for unchecked to-do items and the other for checked items. Add the following test to ItemListDataProviderTests:
func test_NumberOfSections_IsTwo() {
let sut = ItemListDataProvider()
let tableView = UITableView()
tableView.dataSource = sut
let numberOfSections = tableView.numberOfSections
XCTAssertEqual(numberOfSections, 2)
}
First, we create an instance of ItemListDataProvider, set up the table view, and then we check whether the table view has the expected ...
