An easy-to-use library to stub HTTP requests using URLSession and to swizzle methods
Replacer is an easy-to-use library to stub HTTP requests and to swizzle methods.
Specifically, URLSession's response can be replaced with any JSON, Data, and so on....
It uses method chaining to set stubs up.
import Replacer
import TestReplacer
class SampleTests: XCTestCase {
func testJSONFile() {
// register a stub
self.urlStub.url("echo.jsontest.com").json(["test": "data"])
// load sample.json & register a stub.
self.urlStub.json(filename: "sample")
let expectation = self.expectation(description: "")
let url = URL(string: "http://echo.jsontest.com/key/value/one/two")!
URLSession(configuration: .default).dataTask(with: url) { data, _, _ in
let json = try! JSONSerialization.jsonObject(with: data!, options: .allowFragments) as! [String: String]
XCTAssert(json["test"] == "data")
expectation.fulfill()
}.resume()
self.waitForExpectations(timeout: 0.02, handler: nil)
}
}
class SampleSpecs: QuickSpec {
override func spec() {
describe("Quick compatibility test") {
context("using JSON file") {
beforeEach() {
// wait for 1.5s
self.urlStub.url("echo.jsontest.com/[a-z]+/.*")
.httpMethod(.post)
.json(["test": "data"])
.delay(1.5)
}
it("returns mock data") {
var json: [String: String]?
Alamofire.request("http://echo.jsontest.com/key/value/one/two", method: .post).responseJSON { response in
json = response.result.value as? [String: String]
}
// SessionManager is also OK.
// SessionManager.default.request("http://echo.jsontest.com/key/value/one/two").responseJSON { _ in }
expect(json?["test"]).toEventually(equal("data"))
}
}
}
}
}
import UIKit
import Replacer
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
Replacer.replaceInstance(#selector(UIViewController.viewWillAppear(_:)),
of: UIViewController.self,
with: #selector(UIViewController.orig_viewWillAppear(_:)),
of: UIViewController.self)
return true
}
}
extension UIViewController {
func orig_viewWillAppear(_ animated: Bool) {
orig_viewWillAppear(animated)
print("swizzled")
}
}
github "tattn/Replacer"
pod 'Replacer'
git checkout -b my-new-feature
git commit -am 'Add some feature'
git push origin my-new-feature
Replacer is released under the MIT license. See LICENSE for details.