metatext/Development Assets/StubbingURLProtocol.swift

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// Copyright © 2020 Metabolist. All rights reserved.
import Foundation
class StubbingURLProtocol: URLProtocol {
private static var targetsForURLs = [URL: HTTPTarget]()
class func setTarget(_ target: HTTPTarget, forURL url: URL) {
targetsForURLs[url] = target
}
override class func canInit(with task: URLSessionTask) -> Bool {
true
}
override class func canInit(with request: URLRequest) -> Bool {
true
}
override class func canonicalRequest(for request: URLRequest) -> URLRequest {
request
}
override func startLoading() {
guard
let url = request.url,
let stub = HTTPStubs.stub(request: request, target: Self.targetsForURLs[url]) else {
preconditionFailure("Stub for request not found")
}
switch stub {
case let .success((response, data)):
client?.urlProtocol(self, didReceive: response, cacheStoragePolicy: .allowed)
client?.urlProtocol(self, didLoad: data)
client?.urlProtocolDidFinishLoading(self)
case let .failure(error):
client?.urlProtocol(self, didFailWithError: error)
}
}
override func stopLoading() {}
}