Stubbing/mocking up webservices for an iOS app

Question

I\'m working on an iOS app whose primary purpose is communication with a set of remote webservices. For integration testing, I\'d like to be able to run my app against some sort

Answer 1

OHTTPStubs is a pretty great framework for doing what you want that's gained a lot of traction. From their github readme:

OHTTPStubs is a library designed to stub your network requests very easily. It can help you:

• Test your apps with fake network data (stubbed from file) and simulate slow networks, to check your application behavior in bad network conditions
• Write Unit Tests that use fake network data from your fixtures.

It works with NSURLConnection, new iOS7/OSX.9's NSURLSession, AFNetworking (both 1.x and 2.x), or any networking framework that use Cocoa's URL Loading System.

OHHTTPStubs headers are fully documented using Appledoc-like / Headerdoc-like comments in the header files. You can also read the online documentation here.

Here's an example:

[OHHTTPStubs stubRequestsPassingTest:^BOOL(NSURLRequest *request) {
    return [request.URL.host isEqualToString:@"mywebservice.com"];
} withStubResponse:^OHHTTPStubsResponse*(NSURLRequest *request) {
    // Stub it with our "wsresponse.json" stub file
    NSString* fixture = OHPathForFileInBundle(@"wsresponse.json",nil);
    return [OHHTTPStubsResponse responseWithFileAtPath:fixture
              statusCode:200 headers:@{@"Content-Type":@"text/json"}];
}];

You can find additional usage examples on the wiki page.