//
//  DPoPJWTGeneratorTests.swift
//  CoreATProtocol
//
//  Created by Claude on 2026-01-02.
//

import Testing
import Foundation
import JWTKit
@testable import CoreATProtocol

@Suite("DPoP JWT Generator Tests", .serialized)
struct DPoPJWTGeneratorTests {

    @Test("DPoP JWT Generator can be created with ES256 key")
    func testGeneratorCreation() async throws {
        let privateKey = ES256PrivateKey()
        let generator = try await DPoPJWTGenerator(privateKey: privateKey)

        // Verify we can get a JWT generator function
        _ = await generator.jwtGenerator()
        // If we get here without throwing, the test passes
    }

    @Test("DPoPKeyMaterialError cases exist")
    func testKeyMaterialErrors() {
        // Test error cases exist and are equatable
        let error1 = DPoPKeyMaterialError.publicKeyUnavailable
        let error2 = DPoPKeyMaterialError.invalidCoordinate

        #expect(error1 != error2)
        #expect(error1 == DPoPKeyMaterialError.publicKeyUnavailable)
    }

    @Test("Resource server nonce can be updated")
    func testResourceServerNonce() async {
        // Clear state first
        await updateResourceDPoPNonce(nil)

        // Set nonce using the public function
        await updateResourceDPoPNonce("test-nonce-value")
        let nonce = await APEnvironment.current.resourceServerNonce
        #expect(nonce == "test-nonce-value")

        // Clear it
        await updateResourceDPoPNonce(nil)
        let clearedNonce = await APEnvironment.current.resourceServerNonce
        #expect(clearedNonce == nil)
    }
}