Instructions
- Make the failing test pass
- Add another view (
PersonViewController) with its own view model that's initialized with a person - Test that the
PersonListViewModelcreates the correctPersonViewModel - Try fetching data from the internet instead (e.g. https://api.myjson.com/bins/nghk, or create your own JSON there)
- Add some fields to the model, e.g. an
NSDatebirthdate that must be formatted
Takeaway points
- Better separation between UI and state of the app
- Testing is easier due to cleaner interfaces and dependency injection
Additional material
To fetch data from a JSON backend, you can do something like this in the store:
NSURL *url = [NSURL URLWithString:@"https://api.myjson.com/bins/nghk"];
return [[[NSURLSession sharedSession] rac_GET:url]
map:^(RACTuple *result) {
NSData *data = result.first;
NSArray *peopleArray = [NSJSONSerialization JSONObjectWithData:data options:0 error:NULL];
NSMutableArray *people = [NSMutableArray array];
for (NSDictionary *personDict in peopleArray) {
Person *person = [[Person alloc] initWithFirstName:personDict[@"firstName"] lastName:personDict[@"lastName"]];
[people addObject:person];
}
return [people copy];
}];