feat: Update event source to use AnyURLSession (#1)

* Update event source to use AnyURLSession

* Fix targeting for CI runs

* Fix swift versions

* Point to different anyurlsession commit

* Adjust test for session creation swapping

* Update comment in ci

.github/workflows/ci.yml

@@ -1,11 +1,11 @@
 name: Run CI
 on:
   push:
-    branches: [ main ]
+    branches: [ main-bcny ]
     paths-ignore:
       - '**.md' # Do not need to run CI for markdown changes.
   pull_request:
-    branches: [ main ]
+    branches: [ main-bcny ]
     paths-ignore:
       - '**.md'
 
@@ -44,11 +44,16 @@ jobs:
     strategy:
       matrix:
         swift-version:
-          - 5.1
-          - 5.2
-          - 5.3
-          - 5.4
-          - 5.5
+          # This package originally goes back to Swift 5.0
+          # however, we're unable to specify a dependency at a specific SHA
+          # until Swift version 5.5+ so while these reflect what used to be
+          # supported by the base package, this fork requires a different
+          # minimum toolchain and package description.
+          # - 5.1
+          # - 5.2
+          # - 5.3
+          # - 5.4
+          # - 5.5
           - 5.6
           - 5.7
           - 5.8

Package.resolved

@@ -0,0 +1,16 @@
+{
+  "object": {
+    "pins": [
+      {
+        "package": "swift-anyurlsession",
+        "repositoryURL": "https://github.com/thebrowsercompany/AnyURLSession",
+        "state": {
+          "branch": "9b8e39b",
+          "revision": "9b8e39b95f8290909b976619eb00dc8c9ba472bf",
+          "version": null
+        }
+      }
+    ]
+  },
+  "version": 1
+}

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.0
+// swift-tools-version:5.5
 
 import PackageDescription
 
@@ -13,10 +13,15 @@ let package = Package(
     products: [
         .library(name: "LDSwiftEventSource", targets: ["LDSwiftEventSource"]),
     ],
-    dependencies: [],
+    dependencies: [
+        .package(url: "https://github.com/thebrowsercompany/AnyURLSession", revision: "9b8e39b")
+    ],
     targets: [
         .target(
             name: "LDSwiftEventSource",
+            dependencies: [
+                .product(name: "AnyURLSession", package: "AnyURLSession")
+            ],
             path: "Source"),
         .testTarget(
             name: "LDSwiftEventSourceTests",

Source/LDSwiftEventSource.swift

@@ -1,7 +1,12 @@
 import Foundation
 
 #if os(Linux) || os(Windows)
-import FoundationNetworking
+import AnyURLSession
+
+import class FoundationNetworking.HTTPURLResponse
+import struct FoundationNetworking.URLRequest
+import class FoundationNetworking.URLResponse
+import class FoundationNetworking.URLSessionConfiguration
 #endif
 
 /**

Tests/LDSwiftEventSourceTests.swift

@@ -3,6 +3,7 @@ import XCTest
 
 #if os(Linux) || os(Windows)
 import FoundationNetworking
+import AnyURLSession
 #endif
 
 final class LDSwiftEventSourceTests: XCTestCase {
@@ -103,6 +104,28 @@ final class LDSwiftEventSourceTests: XCTestCase {
     }
 
     func testCreatedSession() {
+        #if os(Linux) || os(Windows)
+        final class TestURLSessionGuts: URLSessionGuts {
+            var configuration: URLSessionConfiguration
+
+            init(configuration: URLSessionConfiguration, delegate: (any AnyURLSession.URLSessionDelegate)?, delegateQueue queue: OperationQueue?) {
+                self.configuration = configuration
+            }
+
+            func uploadTask(with request: URLRequest, fromFile file: URL, completionHandler: @escaping @Sendable (Data?, URLResponse?, (any Error)?) -> Void) -> AnyURLSession.URLSessionUploadTask { AnyURLSession.URLSessionUploadTask() }
+            func dataTask(with request: URLRequest) -> AnyURLSession.URLSessionDataTask { AnyURLSession.URLSessionDataTask() }
+            func dataTask(with request: URLRequest, completionHandler: @escaping @Sendable (Data?, URLResponse?, (any Error)?) -> Void) -> AnyURLSession.URLSessionDataTask { AnyURLSession.URLSessionDataTask() }
+            func invalidateAndCancel() {}
+            func finishTasksAndInvalidate() {}
+        }
+
+        AnyURLSession.Dependencies.current.setValue(
+            Dependencies(gutsFactory: { (config, delegate, queue) in
+                TestURLSessionGuts(configuration: config, delegate: delegate, delegateQueue: queue)
+            })
+        )
+
+        #endif
         let config = EventSource.Config(handler: mockHandler, url: URL(string: "abc")!)
         let session = EventSourceDelegate(config: config).createSession()
         XCTAssertEqual(session.configuration.timeoutIntervalForRequest, config.idleTimeout)