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// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
class TestURLProtocol : LoopbackServerTest {
func test_interceptResponse() {
let urlString = "http://127.0.0.1:\(TestURLProtocol.serverPort)/USA"
let url = URL(string: urlString)!
let config = URLSessionConfiguration.default
config.protocolClasses = [CustomProtocol.self]
config.timeoutIntervalForRequest = 8
let session = URLSession(configuration: config, delegate: nil, delegateQueue: nil)
let expect = expectation(description: "GET \(urlString): with a custom protocol")
let task = session.dataTask(with: url) { data, response, error in
defer { expect.fulfill() }
if let e = error as? URLError {
XCTAssertEqual(e.code, .timedOut, "Unexpected error code")
return
}
let httpResponse = response as! HTTPURLResponse?
XCTAssertEqual(429, httpResponse!.statusCode, "HTTP response code is not 429")
}
task.resume()
waitForExpectations(timeout: 12)
}
func test_interceptRequest() {
let urlString = "ssh://127.0.0.1:\(TestURLProtocol.serverPort)/USA"
let url = URL(string: urlString)!
let config = URLSessionConfiguration.default
config.protocolClasses = [InterceptableRequest.self]
config.timeoutIntervalForRequest = 8
let session = URLSession(configuration: config, delegate: nil, delegateQueue: nil)
let expect = expectation(description: "GET \(urlString): with a custom protocol")
let task = session.dataTask(with: url) { data, response, error in
defer { expect.fulfill() }
if let e = error as? URLError {
XCTAssertEqual(e.code, .timedOut, "Unexpected error code")
return
}
let httpResponse = response as! HTTPURLResponse?
let responseURL = URL(string: "http://google.com")
XCTAssertEqual(responseURL, httpResponse?.url, "Unexpected url")
XCTAssertEqual(200, httpResponse!.statusCode, "HTTP response code is not 200")
}
task.resume()
waitForExpectations(timeout: 12)
}
func test_multipleCustomProtocols() {
let urlString = "http://127.0.0.1:\(TestURLProtocol.serverPort)/Nepal"
let url = URL(string: urlString)!
let config = URLSessionConfiguration.default
config.protocolClasses = [InterceptableRequest.self, CustomProtocol.self]
let expect = expectation(description: "GET \(urlString): with a custom protocol")
let session = URLSession(configuration: config)
let task = session.dataTask(with: url) { data, response, error in
defer { expect.fulfill() }
if let e = error as? URLError {
XCTAssertEqual(e.code, .timedOut, "Unexpected error code")
return
}
let httpResponse = response as! HTTPURLResponse
print(httpResponse.statusCode)
XCTAssertEqual(429, httpResponse.statusCode, "Status code is not 429")
}
task.resume()
waitForExpectations(timeout: 12)
}
func test_customProtocolResponseWithDelegate() {
let urlString = "http://127.0.0.1:\(TestURLSession.serverPort)/Peru"
let url = URL(string: urlString)!
let d = DataTask(with: expectation(description: "GET \(urlString): with a custom protocol and delegate"), protocolClasses: [CustomProtocol.self])
d.responseReceivedExpectation = expectation(description: "GET \(urlString): response received")
d.run(with: url)
waitForExpectations(timeout: 12)
}
func test_customProtocolSetDataInResponseWithDelegate() {
let urlString = "http://127.0.0.1:\(TestURLSession.serverPort)/Nepal"
let url = URL(string: urlString)!
let d = DataTask(with: expectation(description: "GET \(urlString): with a custom protocol and delegate"), protocolClasses: [CustomProtocol.self])
d.run(with: url)
waitForExpectations(timeout: 12)
if !d.error {
XCTAssertEqual(d.capital, "Kathmandu", "test_dataTaskWithURLRequest returned an unexpected result")
}
}
func test_finishLoadingWithNoResponse() throws {
let url = try XCTUnwrap(URL(string: "https://test/url"))
let configuration = URLSessionConfiguration.default
configuration.protocolClasses = [TestURLServer.self]
let session = URLSession(configuration: configuration)
let expect = expectation(description: "GET \(url.absoluteString)")
let task = session.dataTask(with: url) { data, response, error in
defer { expect.fulfill() }
XCTAssertNil(data)
XCTAssertNil(response)
XCTAssertNotNil(error)
}
task.resume()
waitForExpectations(timeout: 2)
}
}
class InterceptableRequest : URLProtocol {
override class func canInit(with request: URLRequest) -> Bool {
return request.url?.scheme == "ssh"
}
override class func canonicalRequest(for request: URLRequest) -> URLRequest {
return request
}
override func startLoading() {
let urlString = "http://google.com"
let url = URL(string: urlString)!
let response = HTTPURLResponse(url: url, statusCode: 200, httpVersion: "HTTP/1.1", headerFields: [:])
self.client?.urlProtocol(self, didReceive: response!, cacheStoragePolicy: .notAllowed)
self.client?.urlProtocolDidFinishLoading(self)
}
override func stopLoading() {
return
}
}
class CustomProtocol : URLProtocol {
override class func canInit(with request: URLRequest) -> Bool {
return true
}
func sendResponse(statusCode: Int, headers: [String: String] = [:], data: Data) {
let response = HTTPURLResponse(url: self.request.url!, statusCode: statusCode, httpVersion: "HTTP/1.1", headerFields: headers)
let capital = "Kathmandu"
let data = capital.data(using: .utf8)
self.client?.urlProtocol(self, didReceive: response!, cacheStoragePolicy: .notAllowed)
self.client?.urlProtocol(self, didLoad: data!)
self.client?.urlProtocolDidFinishLoading(self)
}
override class func canonicalRequest(for request: URLRequest) -> URLRequest {
return request
}
override func startLoading() {
sendResponse(statusCode: 429, data: Data())
}
override func stopLoading() {
return
}
}
public class TestURLServer: URLProtocol {
public override class func canInit(with request: URLRequest) -> Bool {
return true
}
public override class func canonicalRequest(for request: URLRequest) -> URLRequest {
return request
}
public override func startLoading() {
var info: [String: Any] = [:]
if let url = request.url {
info[NSURLErrorFailingURLStringErrorKey] = url.absoluteString
info[NSURLErrorFailingURLErrorKey] = url
}
let error = URLError(.networkConnectionLost, userInfo: info)
client?.urlProtocol(self, didFailWithError: error)
client?.urlProtocolDidFinishLoading(self)
}
public override func stopLoading() {
}
}
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