migration

PediFoodsTests/URLProtocolStub.swift

@@ -0,0 +1,46 @@
+import Foundation
+
+/// Intercepts every request made through a `URLSession` configured with it,
+/// so network-dependent code (`ApiClient`, `ApiService`,
+/// `FeatureControlService`, ...) can be unit tested without touching a real
+/// server. Register a handler per test, then build a session via
+/// `URLProtocolStub.makeSession()`.
+final class URLProtocolStub: URLProtocol {
+    /// `nonisolated(unsafe)`: `URLProtocol` subclasses are instantiated and
+    /// driven by URLSession's own internal (non-Sendable-checked) machinery,
+    /// off the calling actor. Tests only ever set this once, synchronously,
+    /// before starting the request that reads it.
+    nonisolated(unsafe) static var handler: ((URLRequest) throws -> (HTTPURLResponse, Data))?
+
+    static func makeSession() -> URLSession {
+        let config = URLSessionConfiguration.ephemeral
+        config.protocolClasses = [URLProtocolStub.self]
+        return URLSession(configuration: config)
+    }
+
+    override class func canInit(with request: URLRequest) -> Bool { true }
+    override class func canonicalRequest(for request: URLRequest) -> URLRequest { request }
+
+    override func startLoading() {
+        guard let handler = URLProtocolStub.handler else {
+            client?.urlProtocol(self, didFailWithError: URLError(.badServerResponse))
+            return
+        }
+        do {
+            let (response, data) = try handler(request)
+            client?.urlProtocol(self, didReceive: response, cacheStoragePolicy: .notAllowed)
+            client?.urlProtocol(self, didLoad: data)
+            client?.urlProtocolDidFinishLoading(self)
+        } catch {
+            client?.urlProtocol(self, didFailWithError: error)
+        }
+    }
+
+    override func stopLoading() {}
+}
+
+extension HTTPURLResponse {
+    static func stub(url: URL = URL(string: "https://example.com")!, statusCode: Int) -> HTTPURLResponse {
+        HTTPURLResponse(url: url, statusCode: statusCode, httpVersion: nil, headerFields: nil)!
+    }
+}