如果我从故事板中的标识符中取出一个单元格,那么在单元测试方式中我如何调用cellForRowAtIndexPath而不是单元格为零?
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
MyCustomTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:kCustomCell];
cell.guestNameText.text = self.details.guestName;
return cell;
}
不工作,在调用dequeReusableCell并且cell为nil之后设置一个断点:
ETA:更新的工作代码通过测试:
- (void)setUp {
[super setUp];
_detailVC_SUT = [[UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil]
instantiateViewControllerWithIdentifier:kDetailsVC];
_myService = [OCMockObject niceMockForClass:[MyService class]];
_detailVC_SUT.service = _myService;
}
- (void)test_queryForDetailsSucceeded_should_set_cell_text_fields {
[_detailVC_SUT view]; // <--- Need to load the view for this to work
Details *details = [DetailsBuilder buildStubDetails];
[_detailVC_SUT queryForDetailsSucceededWithDetails:details];
[self getFirstCellForGuestName];
}
- (void)getFirstCellForGuestName {
MyCustomTableViewCell *guestNameCell = (MyCustomTableViewCell*)[_detailVC_SUT tableView:_detailVC_SUT.detailsTableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]];
expect(guestNameCell.guestNameText.text).to.equal(@"Mark");
}
答案 0 :(得分:8)
以下是我测试表视图及其单元格的方法。这里的关键是在视图控制器上调用beginAppearanceTransition
,以便从故事板加载它。
class MyTests: XCTestCase {
var viewController: UIViewController!
override func setUp() {
super.setUp()
let storyboard = UIStoryboard(name: "MyStoryboard", bundle: nil)
viewController = storyboard.instantiateViewControllerWithIdentifier("myViewControllerId")
viewController.beginAppearanceTransition(true, animated: false)
}
override func tearDown() {
super.tearDown()
viewController.endAppearanceTransition()
}
func testShowItemsFromNetwork() {
//
// Load the table view here ...
//
let tableView = viewController.tableView
// Check the number of table rows
XCTAssertEqual(3, tableView.dataSource?.tableView(tableView, numberOfRowsInSection: 0))
// Check label text of the cell in the first row
let indexPath = NSIndexPath(forRow: 0, inSection: 0)
let cell = tableView.dataSource?.tableView(tableView, cellForRowAtIndexPath: indexPath)
XCTAssertEqual("Test cell title", cell!.textLabel!.text)
}
}
答案 1 :(得分:0)
表视图在尝试调用cellForRow(at :)时有一个CGRect.zero框架。结果,cellForRow(at :)返回nil。为了测试它,我在你的测试函数中做了以下几点:
func testCellForRow_AtZero_ReturnsTaskCell() {
let mockTableView = UITableView(frame: CGRect(x: 0, y: 0, width: 320, height: 480), style: .plain)
mockTableView.dataSource = dataSource
mockTableView.register(YourTableViewCell.self, forCellReuseIdentifier: String(describing: YourTableViewCell.self))
//The reload is also necessary
mockTableView.reloadData()
let cell = mockTableView.cellForRow(at: IndexPath(row: 0, section: 0))
XCTAssertTrue(cell is YourTableViewCell)
}
不要忘记在dataSource中你应该有一个Indexpath的值(row:0,section:0)。否则测试会失败。