How to use downloadBigFile method of com.github.kittinunf.fuel.core.requests.DownloadRequestTest class

...159        assertThat(error?.exception as IOException, isA(IOException::class.java))160        assertThat(response.statusCode, isEqualTo(statusCode))161    }162    @Test163    fun downloadBigFile() {164        val manager = FuelManager()165        val numberOfBytes = 1024 * 1024 * 10 // 10 MB166        val file = File.createTempFile(numberOfBytes.toString(), null)167        val bytes = ByteArray(numberOfBytes).apply { Random().nextBytes(this) }168        mock.chain(169            request = mock.request().withMethod(Method.GET.value).withPath("/bytes"),170            response = mock.response().withDelay(Delay.seconds(1)).withBody(BinaryBody(bytes, MediaType.OCTET_STREAM))171        )172        var read = -1L173        var total = -1L174        val triple = manager.download(mock.path("bytes"))175            .fileDestination { _, _ -> file }176            .progress { readBytes, totalBytes -> read = readBytes; total = totalBytes }177            .response()178        assertDownloadedBytesToFile(triple, file, numberOfBytes)179        assertThat("Progress read bytes and total bytes should be equal",180                read == total && read != -1L && total != -1L,181                equalTo(true)182        )183    }184    @Test185    fun downloadBigFileResponseUnit() {186        val manager = FuelManager()187        val numberOfBytes = 1024 * 1024 * 10 // 10 MB188        val file = File.createTempFile(numberOfBytes.toString(), null)189        val bytes = ByteArray(numberOfBytes).apply { Random().nextBytes(this) }190        mock.chain(191            request = mock.request().withMethod(Method.GET.value).withPath("/bytes"),192            response = mock.response().withDelay(Delay.seconds(1)).withBody(BinaryBody(bytes, MediaType.OCTET_STREAM))193        )194        var read = -1L195        var total = -1L196        val triple = manager.download(mock.path("bytes"))197            .fileDestination { _, _ -> file }198            .progress { readBytes, totalBytes -> read = readBytes; total = totalBytes }199            .responseUnit()...

1import com.github.kittinunf.fuel.core.requests.downloadBigFile2import com.github.kittinunf.result.Result3import java.io.File4fun main(args: Array<String>) {5    downloadBigFile { result ->6        when (result) {7            is Result.Success -> {8                val (data, response) = result9                println("Downloaded file is saved at ${data.absolutePath}")10            }11            is Result.Failure -> {12                val ex = result.getException()13                println(ex.message)14            }15        }16    }17}18fun DownloadRequest.downloadBigFile(callback: (Result<File, FuelError>) -> Unit) {19    val tempFile = File.createTempFile("download", ".tmp")20    val request = this.destination { response, url ->21    }22    request.response { result ->23        when (result) {24            is Result.Success -> {25                val (data, response) = result26                callback(Result.Success(data))27            }28            is Result.Failure -> {29                val ex = result.getException()30                callback(Result.Failure(ex))31            }32        }33    }34}

1val (request, response, result) = Fuel.download("/bytes/1024").destination { response, url -> File.createTempFile("temp", ".tmp") }.response()2val (request, response, result) = Fuel.download("/bytes/1024").destination { response, url -> File.createTempFile("temp", ".tmp") }.response()3val (request, response, result) = Fuel.download("/bytes/1024").destination { response, url -> File.createTempFile("temp", ".tmp") }.response()4val (request, response, result) = Fuel.download("/bytes/1024").destination { response, url -> File.createTempFile("temp", ".tmp") }.response()5val (request, response, result) = Fuel.download("/bytes/1024").destination { response, url -> File.createTempFile("temp", ".tmp") }.response()6val (request, response, result) = Fuel.download("/bytes/1024").destination { response, url -> File.createTempFile("temp", ".tmp") }.response()7val (request, response, result) = Fuel.download("/bytes/1024").destination { response, url -> File.createTempFile("temp", ".tmp") }.response()