@file:Suppress("MemberVisibilityCanBePrivate")

package jp.juggler.subwaytooter.api

import androidx.test.InstrumentationRegistry
import androidx.test.runner.AndroidJUnit4
import jp.juggler.subwaytooter.api.entity.Host
import jp.juggler.subwaytooter.api.entity.TootInstance
import jp.juggler.subwaytooter.table.SavedAccount
import jp.juggler.subwaytooter.util.SimpleHttpClient
import jp.juggler.util.JsonObject
import jp.juggler.util.MEDIA_TYPE_JSON
import jp.juggler.util.jsonArray
import jp.juggler.util.jsonObject
import kotlinx.coroutines.runBlocking
import okhttp3.*
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.ResponseBody.Companion.toResponseBody
import okio.Buffer
import okio.BufferedSource
import okio.ByteString
import org.junit.Assert.*
import org.junit.Test
import org.junit.runner.RunWith
import java.util.concurrent.atomic.AtomicReference

@Suppress("MemberVisibilityCanPrivate")
@RunWith(AndroidJUnit4::class)
class TestTootApiClient {

    private val appContext = InstrumentationRegistry.getTargetContext()!!

    class SimpleHttpClientMock(
		private val responseGenerator: (request: Request) -> Response,
		val webSocketGenerator: (request: Request, ws_listener: WebSocketListener) -> WebSocket
	) : SimpleHttpClient {

        override var onCallCreated: (Call) -> Unit = {}

        // override var currentCallCallback : CurrentCallCallback? = null

        override suspend fun getResponse(request: Request, tmpOkhttpClient: OkHttpClient?): Response {
            return responseGenerator(request)
        }

        override fun getWebSocket(
			request: Request,
			webSocketListener: WebSocketListener
		): WebSocket {
            return webSocketGenerator(request, webSocketListener)
        }
    }

    private fun requestBodyString(request: Request?): String? {
        try {
            val copyBody = request?.newBuilder()?.build()?.body ?: return null
            val buffer = Buffer()
            copyBody.writeTo(buffer)
            return buffer.readUtf8()
        } catch (ex: Throwable) {
            ex.printStackTrace()
            return null
        }
    }

    private fun createHttpClientNormal(): SimpleHttpClient {
        return SimpleHttpClientMock(
			responseGenerator = { request: Request ->

				val bodyString = requestBodyString(request)

				when (request.url.encodedPath) {

					// クライアント登録
					"/api/v1/apps" -> Response.Builder()
						.request(request)
						.protocol(Protocol.HTTP_1_1)
						.code(200)
						.message("status-message")
						.body(
							"""{"id":999,"redirect_uri":"urn:ietf:wg:oauth:2.0:oob","client_id":"DUMMY_ID","client_secret":"DUMMY_SECRET"}"""
								.toResponseBody(MEDIA_TYPE_JSON)
						)
						.build()

					// client credentialの検証
					"/api/v1/apps/verify_credentials" -> Response.Builder()
						.request(request)
						.protocol(Protocol.HTTP_1_1)
						.code(200)
						.message("status-message")
						.body(
							"""{"id":999,"redirect_uri":"urn:ietf:wg:oauth:2.0:oob","client_id":"DUMMY_ID","client_secret":"DUMMY_SECRET"}"""
								.toResponseBody(MEDIA_TYPE_JSON)
						)
						.build()

					"/oauth/token" -> when {
						// client credential の作成
						bodyString?.contains("grant_type=client_credentials") == true -> {
							Response.Builder()
								.request(request)
								.protocol(Protocol.HTTP_1_1)
								.code(200)
								.message("status-message")
								.body(
									"""{"access_token":"DUMMY_CLIENT_CREDENTIAL"}""".toResponseBody(
										MEDIA_TYPE_JSON
									)
								)
								.build()

						}
						// アクセストークンの作成
						bodyString?.contains("grant_type=authorization_code") == true -> {
							Response.Builder()
								.request(request)
								.protocol(Protocol.HTTP_1_1)
								.code(200)
								.message("status-message")
								.body(
									"""{"access_token":"DUMMY_ACCESS_TOKEN"}""".toResponseBody(
										MEDIA_TYPE_JSON
									)
								)
								.build()
						}

						else -> {
							createResponseErrorCode()
						}
					}
					// ログインユーザの情報
					"/api/v1/accounts/verify_credentials" -> {
						val instance = request.url.host
						val account1Json = JsonObject()
						account1Json.apply {
							put("username", "user1")
							put("acct", "user1")
							put("id", 1L)
							put("url", "http://$instance/@user1")
						}

						Response.Builder()
							.request(request)
							.protocol(Protocol.HTTP_1_1)
							.code(200)
							.message("status-message")
							.body(account1Json.toString().toResponseBody(MEDIA_TYPE_JSON))
							.build()
					}
					// インスタンス情報
					"/api/v1/instance" -> Response.Builder()
						.request(request)
						.protocol(Protocol.HTTP_1_1)
						.code(200)
						.message("status-message")
						.body(JsonObject().apply {
							put("uri", "http://${request.url.host}/")
							put("title", "dummy instance")
							put("description", "dummy description")
							put("version", "0.0.1")
						}.toString().toResponseBody(MEDIA_TYPE_JSON))
						.build()

					// 公開タイムライン
					"/api/v1/timelines/public" -> {
						val instance = request.url.host

						val username = "user1"

						val account1Json = JsonObject()
						account1Json.apply {
							put("username", username)
							put("acct", username)
							put("id", 1L)
							put("url", "http://$instance/@$username")
						}

						val array = jsonArray {
							for (i in 0 until 10) {
								add(jsonObject {
									put("account", account1Json)
									put("id", i.toLong())
									put("uri", "https://$instance/@$username/$i")
									put("url", "https://$instance/@$username/$i")
								})
							}

						}

						Response.Builder()
							.request(request)
							.protocol(Protocol.HTTP_1_1)
							.code(200)
							.message("status-message")
							.body(array.toString().toResponseBody(MEDIA_TYPE_JSON))
							.build()
					}

					else ->
						Response.Builder()
							.request(request)
							.protocol(Protocol.HTTP_1_1)
							.code(200)
							.message("status-message")
							.body(request.url.toString().toResponseBody(mediaTypeTextPlain))
							.build()
				}

			},

			webSocketGenerator = { request: Request, _: WebSocketListener ->
				object : WebSocket {
					override fun queueSize(): Long = 4096L

					override fun send(text: String): Boolean = true

					override fun send(bytes: ByteString): Boolean = true

					override fun close(code: Int, reason: String?): Boolean = true

					override fun cancel() = Unit

					override fun request(): Request = request
				}
			}
		)
    }

    private fun createHttpClientNotImplemented(): SimpleHttpClient {
        return SimpleHttpClientMock(
			responseGenerator = { throw NotImplementedError() },
			webSocketGenerator = { _, _ -> throw NotImplementedError() }
		)
    }

    class ProgressRecordTootApiCallback : TootApiCallback {

        var cancelled: Boolean = false

        var progressString: String? = null

        override val isApiCancelled: Boolean
            get() = cancelled

        override suspend fun publishApiProgress(s: String) {
            progressString = s
        }
    }

    private val requestSimple: Request = Request.Builder().url("https://dummy-url.net/").build()

    private val strJsonOk = """{"a":"A!"}"""
    private val strJsonError = """{"error":"Error!"}"""
    private fun createResponseOk() = Response.Builder()
        .request(requestSimple)
        .protocol(Protocol.HTTP_1_1)
        .code(200)
        .message("status-message")
        .body(strJsonOk.toResponseBody(MEDIA_TYPE_JSON))
        .build()

    private fun createResponseOkButJsonError() = Response.Builder()
        .request(requestSimple)
        .protocol(Protocol.HTTP_1_1)
        .code(200)
        .message("status-message")
        .body(strJsonError.toResponseBody(MEDIA_TYPE_JSON))
        .build()

    private fun createResponseErrorCode() = Response.Builder()
        .request(requestSimple)
        .protocol(Protocol.HTTP_1_1)
        .code(500)
        .message("status-message")
        .body(strJsonError.toResponseBody(MEDIA_TYPE_JSON))
        .build()

    private fun createResponseEmptyBody(code: Int = 200) = Response.Builder()
        .request(requestSimple)
        .protocol(Protocol.HTTP_1_1)
        .code(code)
        .message("status-message")
        .body("".toResponseBody(MEDIA_TYPE_JSON))
        .build()

    private fun createResponseWithoutBody() = Response.Builder()
        .request(requestSimple)
        .protocol(Protocol.HTTP_1_1)
        .code(200)
        .message("status-message")
        // without body
        .build()

    private fun createResponseExceptionBody() = Response.Builder()
        .request(requestSimple)
        .protocol(Protocol.HTTP_1_1)
        .code(200)
        .message("status-message")
        .body(
			object : ResponseBody() {
				override fun contentLength() = 10L
				override fun contentType(): MediaType = MEDIA_TYPE_JSON
				override fun source(): BufferedSource = error("ExceptionBody")
			}
		)
        .build()

    private val strJsonArray1 = """["A!"]"""
    private val strJsonArray2 = """   [  "A!"  ]  """
    private val strJsonObject2 = """  {  "a"  :  "A!"  }  """
    private val strPlainText = "Hello!"

    private fun createResponseJsonArray1() = Response.Builder()
        .request(requestSimple)
        .protocol(Protocol.HTTP_1_1)
        .code(200)
        .message("status-message")
        .body(strJsonArray1.toResponseBody(MEDIA_TYPE_JSON))
        .build()

    private fun createResponseJsonArray2() = Response.Builder()
        .request(requestSimple)
        .protocol(Protocol.HTTP_1_1)
        .code(200)
        .message("status-message")
        .body(strJsonArray2.toResponseBody(MEDIA_TYPE_JSON))
        .build()

    private fun createResponseJsonObject2() = Response.Builder()
        .request(requestSimple)
        .protocol(Protocol.HTTP_1_1)
        .code(200)
        .message("status-message")
        .body(strJsonObject2.toResponseBody(MEDIA_TYPE_JSON))
        .build()

    private val mediaTypeTextPlain = "text/plain".toMediaType()
    private val mediaTypeHtml = "text/html".toMediaType()

    private fun createResponsePlainText() = Response.Builder()
        .request(requestSimple)
        .protocol(Protocol.HTTP_1_1)
        .code(200)
        .message("status-message")
        .body(strPlainText.toResponseBody(mediaTypeTextPlain))
        .build()

    @Test
    fun testSimplifyErrorHtml() {
        var request: Request
        var response: Response
        var message: String

        // json error
        response = createResponseErrorCode()
        message = TootApiClient.simplifyErrorHtml(response)
        assertEquals("Error!", message)

        // HTML error

        response = Response.Builder()
            .request(requestSimple)
            .protocol(Protocol.HTTP_1_1)
            .code(500)
            .message("This is test")
            .body("""<html><body>Error!</body></html>""".toResponseBody(mediaTypeHtml))
            .build()

        message = TootApiClient.simplifyErrorHtml(response)
        assertEquals("Error!", message)

        // other error
        request = Request.Builder()
            .url("https://dummy-url.net/")
            .build()

        response = Response.Builder()
            .request(request)
            .protocol(Protocol.HTTP_1_1)
            .code(500)
            .message("This is test")
            .body("Error!".toResponseBody("text/plain".toMediaType()))
            .build()

        message =TootApiClient.simplifyErrorHtml(response)
        assertEquals("Error!", message)

        // empty body
        request = Request.Builder()
            .url("https://dummy-url.net/")
            .build()

        response = Response.Builder()
            .request(request)
            .protocol(Protocol.HTTP_1_1)
            .code(500)
            .message("This is test")
            .body("".toResponseBody("text/plain".toMediaType()))
            .build()

        message = TootApiClient.simplifyErrorHtml(response=response,caption="caption" )
        assertEquals("", message)
    }

    @Test
    fun testFormatResponse() {

        var request: Request
        var response: Response
        var bodyString: String?
        var message: String

        // without response body
        request = Request.Builder()
            .url("https://dummy-url.net/")
            .build()

        response = Response.Builder()
            .request(request)
            .protocol(Protocol.HTTP_1_1)
            .code(500)
            .message("This is test")
            .build()

        message = TootApiClient.formatResponse(response,"caption")

        assertEquals("(HTTP 500 This is test) caption", message)

        // json error
        request = Request.Builder()
            .url("https://dummy-url.net/")
            .build()

        response = Response.Builder()
            .request(request)
            .protocol(Protocol.HTTP_1_1)
            .code(500)
            .message("status-message")
            .body("""{"error":"Error!"}""".toResponseBody(MEDIA_TYPE_JSON))
            .build()

        message = TootApiClient.formatResponse(response,"caption")
        assertEquals("Error! (HTTP 500 status-message) caption", message)

        // json error (after reading body)

        request = Request.Builder()
            .url("https://dummy-url.net/")
            .build()

        response = Response.Builder()
            .request(request)
            .protocol(Protocol.HTTP_1_1)
            .code(500)
            .message("status-message")
            .body("""{"error":"Error!"}""".toResponseBody(MEDIA_TYPE_JSON))
            .build()

        bodyString = response.body?.string()

        message =  TootApiClient.formatResponse(response,"caption",bodyString)
        assertEquals("Error! (HTTP 500 status-message) caption", message)

        // without status message
        request = Request.Builder()
            .url("https://dummy-url.net/")
            .build()

        response = Response.Builder()
            .request(request)
            .protocol(Protocol.HTTP_1_1)
            .code(500)
            .message("")
            .body("""{"error":"Error!"}""".toResponseBody(MEDIA_TYPE_JSON))
            .build()

        bodyString = response.body?.string()

        message = TootApiClient.formatResponse(response = response,caption = "caption",bodyString = bodyString)
        assertEquals("Error! (HTTP 500) caption", message)
    }

    @Test
    fun testIsApiCancelled() {
        runBlocking {
            var flag = 0
            var progressString: String? = null
            var progressValue: Int? = null
            var progressMax: Int? = null

            val client = TootApiClient(
				appContext,
				httpClient = createHttpClientNotImplemented(),
				callback = object : TootApiCallback {
					override val isApiCancelled: Boolean
						get() {
							++flag
							return true
						}

					override suspend fun publishApiProgress(s: String) {
						++flag
						progressString = s
					}

					override suspend fun publishApiProgressRatio(value: Int, max: Int) {
						++flag
						progressValue = value
						progressMax = max
					}
				}
			)
            val isApiCancelled = client.isApiCancelled
            client.publishApiProgress("testing")
            client.publishApiProgressRatio(50, 100)
            assertEquals(3, flag)
            assertEquals(true, isApiCancelled)
            assertEquals("testing", progressString)
            assertEquals(50, progressValue)
            assertEquals(100, progressMax)

        }
    }

    @Test
    fun testSendRequest() {
        runBlocking {

            val callback = ProgressRecordTootApiCallback()

            // 正常ケースではResponseが返ってくること
            run {
                val client = TootApiClient(
					appContext,
					httpClient = createHttpClientNormal(),
					callback = callback
				)
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)

                callback.progressString = null
                val bOk = client.sendRequest(result) { requestSimple }
                assertEquals(true, bOk)
                assertEquals("Acquiring: GET /", callback.progressString)
                assertEquals(null, result.error)
                assertNotNull(result.response)
            }

            // httpClient.getResponseが例外を出す場合に対応できること
            run {
                val client = TootApiClient(
					appContext,
					httpClient = createHttpClientNotImplemented(),
					callback = callback
				)
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)

                callback.progressString = null
                val bOk = client.sendRequest(result) { requestSimple }
                assertEquals(false, bOk)
                assertEquals("Acquiring: GET /", callback.progressString)
                assertEquals(
					"instance: Network error.: NotImplementedError An operation is not implemented.",
					result.error
				)
                assertNull(result.response)

            }

            // progressPath を指定したらpublishApiProgressに渡されること
            run {
                val client = TootApiClient(
					appContext,
					httpClient = createHttpClientNormal(),
					callback = callback
				)
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)

                callback.progressString = null
                val bOk = client.sendRequest(result, progressPath = "XXX") { requestSimple }
                assertEquals(true, bOk)
                assertEquals("Acquiring: GET XXX", callback.progressString)
                assertEquals(null, result.error)
                assertNotNull(result.response)
            }
        }
    }

    @Test
    fun testReadBodyString() {
        runBlocking {
            val callback = ProgressRecordTootApiCallback()
            val client = TootApiClient(
				appContext,
				httpClient = createHttpClientNormal(),
				callback = callback
			)

            // キャンセルされてたらnullを返すこと
            run {
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseOk()
                callback.progressString = null
                callback.cancelled = true
                val bodyString = client.readBodyString(result)
                callback.cancelled = false
                assertNull(bodyString)
                assertNull(result.bodyString)
                assertNull(result.data)
                assertNull(result.error)
                assertNull(callback.progressString)
            }

            // 正常ケースなら progressを更新してbodyStringを返す
            run {
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseOk()

                callback.progressString = null
                val bodyString = client.readBodyString(result)
                assertEquals(strJsonOk, bodyString)
                assertEquals(strJsonOk, result.bodyString)
                assertEquals("Parsing response…", callback.progressString)
                assertNull(result.error)
                assertNull(result.data)
            }

            // レスポンスコードがエラーなら
            run {

                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseErrorCode()

                callback.progressString = null
                val bodyString = client.readBodyString(result)
                assertEquals(null, bodyString)
                assertEquals(null, result.bodyString)
                assertEquals("Reading: GET instance", callback.progressString)
                assertEquals("Error! (HTTP 500 status-message) instance", result.error)
                assertNull(result.data)
            }

            // ボディが空なら
            run {

                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseEmptyBody()
                callback.progressString = null
                val bodyString = client.readBodyString(result)
                assertEquals("", bodyString)
                assertEquals("", result.bodyString)
                assertEquals("Reading: GET instance", callback.progressString)
                assertEquals(null, result.error)
                assertNull(result.data)
            }
            // ボディがnullなら
            run {

                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseWithoutBody()

                callback.progressString = null
                val bodyString = client.readBodyString(result)
                assertEquals("", bodyString)
                assertEquals("", result.bodyString)
                assertEquals("Reading: GET instance", callback.progressString)
                assertEquals(null, result.error)
                assertNull(result.data)
            }

            // string() が例外
            run {

                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseExceptionBody()

                var catched: Throwable? = null
                val bodyString = try {
                    client.readBodyString(result)
                } catch (ex: Throwable) {
                    ex.printStackTrace()
                    catched = ex
                    null
                }
                assertEquals(null, bodyString)
                assertNotNull(catched)
            }
        }
    }

    @Test
    fun testParseString() {
        runBlocking {

            val callback = ProgressRecordTootApiCallback()
            val client = TootApiClient(
				appContext,
				httpClient = createHttpClientNormal(),
				callback = callback
			)

            // キャンセルされてたらnullを返すこと
            run {
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseOk()
                callback.progressString = null
                callback.cancelled = true
                val r2 = client.parseString(result)
                callback.cancelled = false
                assertNull(r2)
                assertNull(result.bodyString)
                assertNull(result.data)
                assertNull(result.error)
                assertNull(callback.progressString)
            }

            // 正常ケースなら progressを更新してbodyStringを返す
            run {
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseOk()

                callback.progressString = null
                val r2 = client.parseString(result)
                assertNotNull(r2)
                assertEquals(strJsonOk, result.string)
                assertEquals(strJsonOk, result.bodyString)
                assertEquals("Parsing response…", callback.progressString)
                assertNull(result.error)
            }
            // 正常レスポンスならJSONにエラーがあってもreadStringは関知しない
            run {
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseOkButJsonError()

                callback.progressString = null
                val r2 = client.parseString(result)
                assertNotNull(r2)
                assertEquals(strJsonError, result.string)
                assertEquals(strJsonError, result.bodyString)
                assertEquals("Parsing response…", callback.progressString)
                assertNull(result.error)
            }

            // レスポンスコードがエラーなら
            run {

                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseErrorCode()
                callback.progressString = null
                val r2 = client.parseString(result)
                assertNotNull(r2)
                assertEquals(null, result.string)
                assertEquals(null, result.bodyString)
                assertEquals("Reading: GET instance", callback.progressString)
                assertEquals("Error! (HTTP 500 status-message) instance", result.error)
            }

            // ボディが空で応答コードがエラーなら
            run {

                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseEmptyBody(code = 404)
                callback.progressString = null
                val r2 = client.parseString(result)
                assertNotNull(r2)
                assertEquals(null, result.string)
                assertEquals(null, result.bodyString)
                assertEquals("Reading: GET instance", callback.progressString)
                assertEquals("(no information) (HTTP 404 status-message) instance", result.error)
                assertNull(result.data)
            }
            // ボディがnullでも応答コードが成功ならエラーではない
            run {

                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseWithoutBody()

                callback.progressString = null
                val r2 = client.parseString(result)
                assertNotNull(r2)
                assertEquals("", result.string)
                assertEquals("", result.bodyString)
                assertEquals("Reading: GET instance", callback.progressString)
                assertEquals(null, result.error)
                assertEquals("", result.data)
            }

            // string() が例外
            run {

                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseExceptionBody()
                val r2 = client.parseString(result)
                assertNotNull(r2)
                assertEquals(null, result.string)
                assertEquals(null, result.bodyString)
                assertEquals("Reading: GET instance", callback.progressString)
                assertEquals("(no information) (HTTP 200 status-message) instance", result.error)
                assertNull(result.data)
            }

        }
    }

    @Test
    fun testParseJson() {
        runBlocking {
            val callback = ProgressRecordTootApiCallback()
            val client = TootApiClient(
				appContext,
				httpClient = createHttpClientNormal(),
				callback = callback
			)

            // キャンセルされてたらnullを返すこと
            run {
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseOk()
                callback.progressString = null
                callback.cancelled = true
                val r2 = client.parseJson(result)
                callback.cancelled = false
                assertNull(r2)
                assertNull(result.bodyString)
                assertNull(result.data)
                assertNull(result.error)
                assertNull(callback.progressString)
            }

            // 正常ケースなら progressを更新してbodyStringを返す
            run {

                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseOk()

                callback.progressString = null
                val r2 = client.parseJson(result)
                assertNotNull(r2)
                assertEquals("A!", result.jsonObject?.optString("a"))
                assertEquals(strJsonOk, result.bodyString)
                assertEquals("Parsing response…", callback.progressString)
                assertNull(result.error)
            }
            // 正常ケースでもjsonデータにerror項目があれば
            run {

                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseOkButJsonError()

                callback.progressString = null
                val r2 = client.parseJson(result)
                assertNotNull(r2)
                assertEquals(null, result.data)
                assertEquals(strJsonError, result.bodyString)
                assertEquals("Parsing response…", callback.progressString)
                assertEquals("Error!", result.error)
            }

            // レスポンスコードがエラーなら
            run {
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseErrorCode()
                callback.progressString = null
                val r2 = client.parseJson(result)
                assertNotNull(r2)
                assertEquals(null, result.data)
                assertEquals(null, result.bodyString)
                assertEquals("Reading: GET instance", callback.progressString)
                assertEquals("Error! (HTTP 500 status-message) instance", result.error)
            }

            // ボディが空なら
            run {

                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseEmptyBody()
                callback.progressString = null
                val r2 = client.parseJson(result)
                assertNotNull(r2)
                assertEquals(0, result.jsonObject?.size)
                assertEquals("", result.bodyString)
                assertEquals("Reading: GET instance", callback.progressString)
                assertEquals(null, result.error)
            }

            // ボディがnullなら
            run {
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseWithoutBody()
                callback.progressString = null
                val r2 = client.parseJson(result)
                assertNotNull(r2)
                assertEquals(0, result.jsonObject?.size)
                assertEquals("", result.bodyString)
                assertEquals("Reading: GET instance", callback.progressString)
                assertEquals(null, result.error)
            }

            // string() が例外
            run {

                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseExceptionBody()
                val r2 = client.parseJson(result)
                assertNotNull(r2)
                assertEquals(null, result.data)
                assertEquals(null, result.bodyString)
                assertEquals("Reading: GET instance", callback.progressString)
                assertEquals("(no information) (HTTP 200 status-message) instance", result.error)
                assertNull(result.data)
            }

            // JSON Arrayを処理する
            run {
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseJsonArray1()

                callback.progressString = null
                val r2 = client.parseJson(result)
                assertNotNull(r2)
                assertEquals("A!", result.jsonArray?.optString(0))
                assertEquals(strJsonArray1, result.bodyString)
                assertEquals("Parsing response…", callback.progressString)
                assertNull(result.error)
            }

            // 空白が余計に入ってるJSON Arrayを処理する
            run {

                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseJsonArray2()

                callback.progressString = null
                val r2 = client.parseJson(result)
                assertNotNull(r2)
                assertEquals("A!", result.jsonArray?.optString(0))
                assertEquals(strJsonArray2, result.bodyString)
                assertEquals("Parsing response…", callback.progressString)
                assertNull(result.error)
            }

            // 空白が余計に入ってるJSON Objectを処理する
            run {
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponseJsonObject2()

                callback.progressString = null
                val r2 = client.parseJson(result)
                assertNotNull(r2)
                assertEquals("A!", result.jsonObject?.optString("a"))
                assertEquals(strJsonObject2, result.bodyString)
                assertEquals("Parsing response…", callback.progressString)
                assertNull(result.error)
            }
            // JSONじゃない
            run {
                val result = TootApiResult.makeWithCaption("instance")
                assertEquals(null, result.error)
                result.response = createResponsePlainText()

                callback.progressString = null
                val r2 = client.parseJson(result)
                assertNotNull(r2)
                assertEquals(null, result.data)
                assertEquals(strPlainText, result.bodyString)
                assertEquals("Parsing response…", callback.progressString)
                assertEquals("API response is not JSON. Hello! (HTTP 200 status-message) https://dummy-url.net/", result.error)
            }
        }
    }

    @Test
    fun testRegisterClient() {
        runBlocking {
            val callback = ProgressRecordTootApiCallback()
            val client = TootApiClient(
				appContext,
				httpClient = createHttpClientNormal(),
				callback = callback
			)
            val instance = Host.parse("unit-test")
            client.apiHost = instance
            val clientName = "SubwayTooterUnitTest"
            val scope_string = "read+write+follow+push"

            // まずクライアント情報を作らないとcredentialのテストができない
            var result = client.registerClient(scope_string, clientName)
            assertNotNull(result)
            assertEquals(null, result?.error)
            var jsonObject = result?.jsonObject
            assertNotNull(jsonObject)
            if (jsonObject == null) return@runBlocking
            val clientInfo = jsonObject

            // clientCredential の作成
            result = client.getClientCredential(clientInfo)
            assertNotNull(result)
            assertEquals(null, result?.error)
            val clientCredential = result?.string
            assertNotNull(clientCredential)
            if (clientCredential == null) return@runBlocking
            clientInfo[TootApiClient.KEY_CLIENT_CREDENTIAL] = clientCredential

            // clientCredential の検証
            result = client.verifyClientCredential(clientCredential)
            assertNotNull(result)
            assertEquals(null, result?.error)
            jsonObject = result?.jsonObject
            assertNotNull(jsonObject) // 中味は別に見てない。jsonObjectなら良いらしい
            if (jsonObject == null) return@runBlocking

            var url: String?

            // ブラウザURLの作成
            url = client.prepareBrowserUrl(scope_string, clientInfo)
            assertNotNull(url)
            println(url)

            // ここまでと同じことをauthorize1でまとめて行う
            result = client.authentication1(clientName)
            url = result?.string
            assertNotNull(url)
            if (url == null) return@runBlocking
            println(url)

            // ブラウザからコールバックで受け取ったcodeを処理する
            val refToken = AtomicReference<String>(null)
            result = client.authentication2Mastodon(clientName, "DUMMY_CODE",refToken)
            jsonObject = result?.jsonObject
            assertNotNull(jsonObject)
            if (jsonObject == null) return@runBlocking
            println(jsonObject.toString())

            // 認証できたならアクセストークンがある
            val tokenInfo = result?.tokenInfo
            assertNotNull(tokenInfo)
            if (tokenInfo == null) return@runBlocking
            val accessToken = tokenInfo.string("access_token")
            assertNotNull(accessToken)
            if (accessToken == null) return@runBlocking

            // アカウント手動入力でログインする場合はこの関数を直接呼び出す
            result = client.getUserCredential(accessToken, tokenInfo)
            jsonObject = result?.jsonObject
            assertNotNull(jsonObject)
            if (jsonObject == null) return@runBlocking
            println(jsonObject.toString())
        }
    }

    @Test
    fun testGetInstanceInformation() {
        runBlocking {
            val callback = ProgressRecordTootApiCallback()
            val client = TootApiClient(
				appContext,
				httpClient = createHttpClientNormal(),
				callback = callback
			)
            val instance = Host.parse("unit-test")
            client.apiHost = instance
			val (instanceInfo, instanceResult) = TootInstance.get(client)
            assertNotNull(instanceInfo)
            assertNotNull(instanceResult)
            val json = instanceResult?.jsonObject
            if (json != null) println(json.toString())
        }
    }

    @Test
    fun testGetHttp() {
        runBlocking {
            val callback = ProgressRecordTootApiCallback()
            val client = TootApiClient(
				appContext,
				httpClient = createHttpClientNormal(),
				callback = callback
			)
            val result = client.getHttp("http://juggler.jp/")
            val content = result?.string
            assertNotNull(content)
            println(content.toString())
        }
    }

    @Test
    fun testRequest() {
        runBlocking {
            val tokenInfo = JsonObject()
            tokenInfo["access_token"] = "DUMMY_ACCESS_TOKEN"

            val accessInfo = SavedAccount(
				db_id = 1,
				acctArg = "user1@host1",
				apiHostArg = null,
				token_info = tokenInfo
			)
            val callback = ProgressRecordTootApiCallback()
            val client = TootApiClient(
				appContext,
				httpClient = createHttpClientNormal(),
				callback = callback
			)
            client.account = accessInfo
            val result = client.request("/api/v1/timelines/public")
            println(result?.bodyString)

            val content = result?.jsonArray
            assertNotNull(content)
            println(content?.jsonObject(0).toString())
        }
    }

    @Test
    fun testWebSocket() {
        runBlocking {
            val tokenInfo = jsonObject {
                put("access_token", "DUMMY_ACCESS_TOKEN")
            }

            val accessInfo = SavedAccount(
				db_id = 1,
				acctArg = "user1@host1",
				apiHostArg = null,
				token_info = tokenInfo
			)
            val callback = ProgressRecordTootApiCallback()
            val client = TootApiClient(
				appContext,
				httpClient = createHttpClientNormal(),
				callback = callback
			)
            client.account = accessInfo
			val (_, ws) = client.webSocket("/api/v1/streaming/?stream=public:local",
				object : WebSocketListener() {
				})
            assertNotNull(ws)
            ws?.cancel()
        }
    }
}