override startLoading

startLoading.swift

final class MockURLProtocol: URLProtocol {
    
    override class func canInit(with request: URLRequest) -> Bool {
        true
    }
    override class func canonicalRequest(for request: URLRequest) -> URLRequest { request }
    override func stopLoading() { }
    override func startLoading() {
        let jsonString = """
                    {
                        "name": "Barış Uyar",
                        "age": 29
                    }
                """
        let jsonData = Data(jsonString.utf8)
        client?.urlProtocol(self, didLoad: jsonData)
        client?.urlProtocolDidFinishLoading(self)
    }
}