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LCEssentials/Tests/LCEssentialsTests/Support/StubURLProtocolTests.swift

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import XCTest
final class StubURLProtocolTests: XCTestCase {
private func makeSession() -> URLSession {
let cfg = URLSessionConfiguration.ephemeral
cfg.protocolClasses = [StubURLProtocol.self]
return URLSession(configuration: cfg)
}
override func tearDown() {
StubURLProtocol.reset()
super.tearDown()
}
func testReplaysCannedResponseAndCapturesRequest() async throws {
var stub = StubURLProtocol.Stub()
stub.statusCode = 201
stub.body = Data(#"{"ok":true}"#.utf8)
StubURLProtocol.setStub(stub)
var request = URLRequest(url: URL(string: "https://example.com/things")!)
request.httpMethod = "POST"
request.httpBody = Data(#"{"name":"x"}"#.utf8)
let (data, response) = try await makeSession().data(for: request)
XCTAssertEqual((response as? HTTPURLResponse)?.statusCode, 201)
XCTAssertEqual(String(data: data, encoding: .utf8), #"{"ok":true}"#)
XCTAssertEqual(StubURLProtocol.requestCount, 1)
XCTAssertEqual(StubURLProtocol.capturedRequests.first?.httpMethod, "POST")
XCTAssertEqual(StubURLProtocol.lastCapturedBody, Data(#"{"name":"x"}"#.utf8))
}
func testReplaysError() async {
var stub = StubURLProtocol.Stub()
stub.error = URLError(.notConnectedToInternet)
StubURLProtocol.setStub(stub)
do {
_ = try await makeSession().data(for: URLRequest(url: URL(string: "https://example.com")!))
XCTFail("expected throw")
} catch {
XCTAssertEqual((error as? URLError)?.code, .notConnectedToInternet)
}
}
}