// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#import <Foundation/Foundation.h>
#import <OCMock/OCMock.h>

#import "OCTTox+Private.h"
#import "OCTToxOptions.h"
#import "OCTCAsserts.h"

static void *refToSelf;

void mocked_tox_self_get_public_key(const Tox *tox, uint8_t *public_key);

@interface OCTToxTests : XCTestCase

@property (strong, nonatomic) OCTTox *tox;

@end

@implementation OCTToxTests

- (void)setUp
{
    [super setUp];
    // Put setup code here. This method is called before the invocation of each test method in the class.

    refToSelf = (__bridge void *)(self);

    self.tox = [[OCTTox alloc] initWithOptions:[OCTToxOptions new] savedData:nil error:nil];
}

- (void)tearDown
{
    // Put teardown code here. This method is called after the invocation of each test method in the class.
    refToSelf = NULL;

    self.tox = nil;

    [super tearDown];
}

- (void)testInit
{
    XCTAssertNotNil(self.tox);
}

- (void)testSavingAndLoading
{
    NSData *data = [self.tox save];
    XCTAssertNotNil(data);

    OCTTox *tox = [[OCTTox alloc] initWithOptions:[OCTToxOptions new] savedData:data error:nil];
    XCTAssertNotNil(tox);

    NSData *data2 = [tox save];

    XCTAssertTrue(data.length == data2.length);
}

- (void)testPublicKey
{
    _tox_self_get_public_key = mocked_tox_self_get_public_key;

    NSString *publicKey = [self.tox publicKey];

    XCTAssertEqualObjects(publicKey, @"000102030405060708090A0B0C0D0E0F" @"000102030405060708090A0B0C0D0E0F");
}

#pragma mark -  Private methods

- (void)testUserStatusFromCUserStatus
{
    XCTAssertTrue(OCTToxUserStatusNone == [self.tox userStatusFromCUserStatus:TOX_USER_STATUS_NONE]);
    XCTAssertTrue(OCTToxUserStatusAway == [self.tox userStatusFromCUserStatus:TOX_USER_STATUS_AWAY]);
    XCTAssertTrue(OCTToxUserStatusBusy == [self.tox userStatusFromCUserStatus:TOX_USER_STATUS_BUSY]);
}

- (void)testUserConnectionStatusFromCUserStatus
{
    XCTAssertTrue(OCTToxConnectionStatusNone == [self.tox userConnectionStatusFromCUserStatus:TOX_CONNECTION_NONE]);
    XCTAssertTrue(OCTToxConnectionStatusTCP  == [self.tox userConnectionStatusFromCUserStatus:TOX_CONNECTION_TCP]);
    XCTAssertTrue(OCTToxConnectionStatusUDP  == [self.tox userConnectionStatusFromCUserStatus:TOX_CONNECTION_UDP]);
}

- (void)testMessageTypeFromCMessageType
{
    XCTAssertTrue(OCTToxMessageTypeNormal == [self.tox messageTypeFromCMessageType:TOX_MESSAGE_TYPE_NORMAL]);
    XCTAssertTrue(OCTToxMessageTypeAction == [self.tox messageTypeFromCMessageType:TOX_MESSAGE_TYPE_ACTION]);
}

- (void)testFileControlFromCFileControl
{
    XCTAssertTrue(OCTToxFileControlResume == [self.tox fileControlFromCFileControl:TOX_FILE_CONTROL_RESUME]);
    XCTAssertTrue(OCTToxFileControlPause  == [self.tox fileControlFromCFileControl:TOX_FILE_CONTROL_PAUSE]);
    XCTAssertTrue(OCTToxFileControlCancel == [self.tox fileControlFromCFileControl:TOX_FILE_CONTROL_CANCEL]);
}

- (void)testFillErrorInit
{
    // test nil error
    [self.tox fillError:nil withCErrorInit:TOX_ERR_NEW_NULL];

    NSError *error;
    [self.tox fillError:&error withCErrorInit:TOX_ERR_NEW_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorInit:TOX_ERR_NEW_NULL];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorInitCodeUnknown);

    error = nil;
    [self.tox fillError:&error withCErrorInit:TOX_ERR_NEW_MALLOC];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorInitCodeMemoryError);

    error = nil;
    [self.tox fillError:&error withCErrorInit:TOX_ERR_NEW_PORT_ALLOC];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorInitCodePortAlloc);

    error = nil;
    [self.tox fillError:&error withCErrorInit:TOX_ERR_NEW_PROXY_BAD_TYPE];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorInitCodeProxyBadType);

    error = nil;
    [self.tox fillError:&error withCErrorInit:TOX_ERR_NEW_PROXY_BAD_HOST];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorInitCodeProxyBadHost);

    error = nil;
    [self.tox fillError:&error withCErrorInit:TOX_ERR_NEW_PROXY_BAD_PORT];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorInitCodeProxyBadPort);

    error = nil;
    [self.tox fillError:&error withCErrorInit:TOX_ERR_NEW_PROXY_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorInitCodeProxyNotFound);

    error = nil;
    [self.tox fillError:&error withCErrorInit:TOX_ERR_NEW_LOAD_ENCRYPTED];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorInitCodeEncrypted);

    error = nil;
    [self.tox fillError:&error withCErrorInit:TOX_ERR_NEW_LOAD_BAD_FORMAT];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorInitCodeLoadBadFormat);
}

- (void)testFillErrorBootstrap
{
    // test nil error
    [self.tox fillError:nil withCErrorBootstrap:TOX_ERR_BOOTSTRAP_NULL];

    NSError *error;
    [self.tox fillError:&error withCErrorBootstrap:TOX_ERR_BOOTSTRAP_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorBootstrap:TOX_ERR_BOOTSTRAP_NULL];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorBootstrapCodeUnknown);

    error = nil;
    [self.tox fillError:&error withCErrorBootstrap:TOX_ERR_BOOTSTRAP_BAD_HOST];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorBootstrapCodeBadHost);

    error = nil;
    [self.tox fillError:&error withCErrorBootstrap:TOX_ERR_BOOTSTRAP_BAD_PORT];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorBootstrapCodeBadPort);
}

- (void)testFillErrorFriendAdd
{
    // test nil error
    [self.tox fillError:nil withCErrorFriendAdd:TOX_ERR_FRIEND_ADD_NULL];

    NSError *error;
    [self.tox fillError:&error withCErrorFriendAdd:TOX_ERR_FRIEND_ADD_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorFriendAdd:TOX_ERR_FRIEND_ADD_NULL];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendAddUnknown);

    error = nil;
    [self.tox fillError:&error withCErrorFriendAdd:TOX_ERR_FRIEND_ADD_TOO_LONG];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendAddTooLong);

    error = nil;
    [self.tox fillError:&error withCErrorFriendAdd:TOX_ERR_FRIEND_ADD_NO_MESSAGE];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendAddNoMessage);

    error = nil;
    [self.tox fillError:&error withCErrorFriendAdd:TOX_ERR_FRIEND_ADD_OWN_KEY];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendAddOwnKey);

    error = nil;
    [self.tox fillError:&error withCErrorFriendAdd:TOX_ERR_FRIEND_ADD_ALREADY_SENT];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendAddAlreadySent);

    error = nil;
    [self.tox fillError:&error withCErrorFriendAdd:TOX_ERR_FRIEND_ADD_BAD_CHECKSUM];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendAddBadChecksum);

    error = nil;
    [self.tox fillError:&error withCErrorFriendAdd:TOX_ERR_FRIEND_ADD_SET_NEW_NOSPAM];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendAddSetNewNospam);

    error = nil;
    [self.tox fillError:&error withCErrorFriendAdd:TOX_ERR_FRIEND_ADD_MALLOC];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendAddMalloc);
}

- (void)testFillErrorFriendDelete
{
    // test nil error
    [self.tox fillError:nil withCErrorFriendDelete:TOX_ERR_FRIEND_DELETE_FRIEND_NOT_FOUND];

    NSError *error;
    [self.tox fillError:&error withCErrorFriendDelete:TOX_ERR_FRIEND_DELETE_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorFriendDelete:TOX_ERR_FRIEND_DELETE_FRIEND_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendDeleteNotFound);
}

- (void)testFillErrorFriendByPublicKey
{
    // test nil error
    [self.tox fillError:nil withCErrorFriendByPublicKey:TOX_ERR_FRIEND_BY_PUBLIC_KEY_NULL];

    NSError *error;
    [self.tox fillError:&error withCErrorFriendByPublicKey:TOX_ERR_FRIEND_BY_PUBLIC_KEY_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorFriendByPublicKey:TOX_ERR_FRIEND_BY_PUBLIC_KEY_NULL];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendByPublicKeyUnknown);

    error = nil;
    [self.tox fillError:&error withCErrorFriendByPublicKey:TOX_ERR_FRIEND_BY_PUBLIC_KEY_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendByPublicKeyNotFound);
}

- (void)testFillErrorFriendGetPublicKey
{
    // test nil error
    [self.tox fillError:nil withCErrorFriendGetPublicKey:TOX_ERR_FRIEND_GET_PUBLIC_KEY_FRIEND_NOT_FOUND];

    NSError *error;
    [self.tox fillError:&error withCErrorFriendGetPublicKey:TOX_ERR_FRIEND_GET_PUBLIC_KEY_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorFriendGetPublicKey:TOX_ERR_FRIEND_GET_PUBLIC_KEY_FRIEND_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendGetPublicKeyFriendNotFound);
}

- (void)testFillErrorSetInfo
{
    // test nil error
    [self.tox fillError:nil withCErrorSetInfo:TOX_ERR_SET_INFO_NULL];

    NSError *error;
    [self.tox fillError:&error withCErrorSetInfo:TOX_ERR_SET_INFO_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorSetInfo:TOX_ERR_SET_INFO_NULL];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorSetInfoCodeUnknow);

    error = nil;
    [self.tox fillError:&error withCErrorSetInfo:TOX_ERR_SET_INFO_TOO_LONG];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorSetInfoCodeTooLong);
}

- (void)testFillErrorFriendGetLastOnline
{
    // test nil error
    [self.tox fillError:nil withCErrorFriendGetLastOnline:TOX_ERR_FRIEND_GET_LAST_ONLINE_FRIEND_NOT_FOUND];

    NSError *error;
    [self.tox fillError:&error withCErrorFriendGetLastOnline:TOX_ERR_FRIEND_GET_LAST_ONLINE_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorFriendGetLastOnline:TOX_ERR_FRIEND_GET_LAST_ONLINE_FRIEND_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendGetLastOnlineFriendNotFound);
}

- (void)testFillErrorFriendQuery
{
    // test nil error
    [self.tox fillError:nil withCErrorFriendQuery:TOX_ERR_FRIEND_QUERY_NULL];

    NSError *error;
    [self.tox fillError:&error withCErrorFriendQuery:TOX_ERR_FRIEND_QUERY_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorFriendQuery:TOX_ERR_FRIEND_QUERY_NULL];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendQueryUnknown);

    error = nil;
    [self.tox fillError:&error withCErrorFriendQuery:TOX_ERR_FRIEND_QUERY_FRIEND_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendQueryFriendNotFound);
}

- (void)testFillErrorSetTyping
{
    // test nil error
    [self.tox fillError:nil withCErrorSetTyping:TOX_ERR_SET_TYPING_FRIEND_NOT_FOUND];

    NSError *error;
    [self.tox fillError:&error withCErrorSetTyping:TOX_ERR_SET_TYPING_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorSetTyping:TOX_ERR_SET_TYPING_FRIEND_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorSetTypingFriendNotFound);
}

- (void)testFillErrorFriendSendMessage
{
    // test nil error
    [self.tox fillError:nil withCErrorFriendSendMessage:TOX_ERR_FRIEND_SEND_MESSAGE_NULL];

    NSError *error;
    [self.tox fillError:&error withCErrorFriendSendMessage:TOX_ERR_FRIEND_SEND_MESSAGE_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorFriendSendMessage:TOX_ERR_FRIEND_SEND_MESSAGE_NULL];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendSendMessageUnknown);

    error = nil;
    [self.tox fillError:&error withCErrorFriendSendMessage:TOX_ERR_FRIEND_SEND_MESSAGE_FRIEND_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendSendMessageFriendNotFound);

    error = nil;
    [self.tox fillError:&error withCErrorFriendSendMessage:TOX_ERR_FRIEND_SEND_MESSAGE_FRIEND_NOT_CONNECTED];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendSendMessageFriendNotConnected);

    error = nil;
    [self.tox fillError:&error withCErrorFriendSendMessage:TOX_ERR_FRIEND_SEND_MESSAGE_SENDQ];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendSendMessageAlloc);

    error = nil;
    [self.tox fillError:&error withCErrorFriendSendMessage:TOX_ERR_FRIEND_SEND_MESSAGE_TOO_LONG];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendSendMessageTooLong);

    error = nil;
    [self.tox fillError:&error withCErrorFriendSendMessage:TOX_ERR_FRIEND_SEND_MESSAGE_EMPTY];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFriendSendMessageEmpty);
}

- (void)testFillErrorFileControl
{
    // test nil error
    [self.tox fillError:nil withCErrorFileControl:TOX_ERR_FILE_CONTROL_FRIEND_NOT_FOUND];

    NSError *error;
    [self.tox fillError:&error withCErrorFileControl:TOX_ERR_FILE_CONTROL_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorFileControl:TOX_ERR_FILE_CONTROL_FRIEND_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileControlFriendNotFound);

    error = nil;
    [self.tox fillError:&error withCErrorFileControl:TOX_ERR_FILE_CONTROL_FRIEND_NOT_CONNECTED];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileControlFriendNotConnected);

    error = nil;
    [self.tox fillError:&error withCErrorFileControl:TOX_ERR_FILE_CONTROL_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileControlNotFound);

    error = nil;
    [self.tox fillError:&error withCErrorFileControl:TOX_ERR_FILE_CONTROL_NOT_PAUSED];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileControlNotPaused);

    error = nil;
    [self.tox fillError:&error withCErrorFileControl:TOX_ERR_FILE_CONTROL_DENIED];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileControlDenied);

    error = nil;
    [self.tox fillError:&error withCErrorFileControl:TOX_ERR_FILE_CONTROL_ALREADY_PAUSED];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileControlAlreadyPaused);

    error = nil;
    [self.tox fillError:&error withCErrorFileControl:TOX_ERR_FILE_CONTROL_SENDQ];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileControlSendq);
}

- (void)testFillErrorFileSeek
{
    // test nil error
    [self.tox fillError:nil withCErrorFileSeek:TOX_ERR_FILE_SEEK_FRIEND_NOT_FOUND];

    NSError *error;
    [self.tox fillError:&error withCErrorFileSeek:TOX_ERR_FILE_SEEK_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorFileSeek:TOX_ERR_FILE_SEEK_FRIEND_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSeekFriendNotFound);

    error = nil;
    [self.tox fillError:&error withCErrorFileSeek:TOX_ERR_FILE_SEEK_FRIEND_NOT_CONNECTED];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSeekFriendNotConnected);

    error = nil;
    [self.tox fillError:&error withCErrorFileSeek:TOX_ERR_FILE_SEEK_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSeekNotFound);

    error = nil;
    [self.tox fillError:&error withCErrorFileSeek:TOX_ERR_FILE_SEEK_DENIED];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSeekDenied);

    error = nil;
    [self.tox fillError:&error withCErrorFileSeek:TOX_ERR_FILE_SEEK_INVALID_POSITION];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSeekInvalidPosition);

    error = nil;
    [self.tox fillError:&error withCErrorFileSeek:TOX_ERR_FILE_SEEK_SENDQ];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSeekSendq);
}

- (void)testFillErrorFileGet
{
    // test nil error
    [self.tox fillError:nil withCErrorFileGet:TOX_ERR_FILE_GET_FRIEND_NOT_FOUND];

    NSError *error;
    [self.tox fillError:&error withCErrorFileGet:TOX_ERR_FILE_GET_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorFileGet:TOX_ERR_FILE_GET_NULL];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileGetInternal);

    error = nil;
    [self.tox fillError:&error withCErrorFileGet:TOX_ERR_FILE_GET_FRIEND_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileGetFriendNotFound);

    error = nil;
    [self.tox fillError:&error withCErrorFileGet:TOX_ERR_FILE_GET_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileGetNotFound);
}

- (void)testFillErrorFileSend
{
    // test nil error
    [self.tox fillError:nil withCErrorFileSend:TOX_ERR_FILE_SEND_NULL];

    NSError *error;
    [self.tox fillError:&error withCErrorFileSend:TOX_ERR_FILE_SEND_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorFileSend:TOX_ERR_FILE_SEND_NULL];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSendUnknown);

    error = nil;
    [self.tox fillError:&error withCErrorFileSend:TOX_ERR_FILE_SEND_FRIEND_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSendFriendNotFound);

    error = nil;
    [self.tox fillError:&error withCErrorFileSend:TOX_ERR_FILE_SEND_FRIEND_NOT_CONNECTED];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSendFriendNotConnected);

    error = nil;
    [self.tox fillError:&error withCErrorFileSend:TOX_ERR_FILE_SEND_NAME_TOO_LONG];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSendNameTooLong);

    error = nil;
    [self.tox fillError:&error withCErrorFileSend:TOX_ERR_FILE_SEND_TOO_MANY];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSendTooMany);
}

- (void)testFillErrorFileSendChunk
{
    // test nil error
    [self.tox fillError:nil withCErrorFileSendChunk:TOX_ERR_FILE_SEND_CHUNK_NULL];

    NSError *error;
    [self.tox fillError:&error withCErrorFileSendChunk:TOX_ERR_FILE_SEND_CHUNK_OK];
    XCTAssertNil(error);

    error = nil;
    [self.tox fillError:&error withCErrorFileSendChunk:TOX_ERR_FILE_SEND_CHUNK_NULL];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSendChunkUnknown);

    error = nil;
    [self.tox fillError:&error withCErrorFileSendChunk:TOX_ERR_FILE_SEND_CHUNK_FRIEND_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSendChunkFriendNotFound);

    error = nil;
    [self.tox fillError:&error withCErrorFileSendChunk:TOX_ERR_FILE_SEND_CHUNK_FRIEND_NOT_CONNECTED];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSendChunkFriendNotConnected);

    error = nil;
    [self.tox fillError:&error withCErrorFileSendChunk:TOX_ERR_FILE_SEND_CHUNK_NOT_FOUND];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSendChunkNotFound);

    error = nil;
    [self.tox fillError:&error withCErrorFileSendChunk:TOX_ERR_FILE_SEND_CHUNK_NOT_TRANSFERRING];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSendChunkNotTransferring);

    error = nil;
    [self.tox fillError:&error withCErrorFileSendChunk:TOX_ERR_FILE_SEND_CHUNK_INVALID_LENGTH];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSendChunkInvalidLength);

    error = nil;
    [self.tox fillError:&error withCErrorFileSendChunk:TOX_ERR_FILE_SEND_CHUNK_SENDQ];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSendChunkSendq);

    error = nil;
    [self.tox fillError:&error withCErrorFileSendChunk:TOX_ERR_FILE_SEND_CHUNK_WRONG_POSITION];
    XCTAssertNotNil(error);
    XCTAssertTrue(error.code == OCTToxErrorFileSendChunkWrongPosition);
}

- (void)testBinToHexString
{
    uint8_t bin[16] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
    NSString *string = [OCTTox binToHexString:bin length:16];

    XCTAssertTrue([@"000102030405060708090A0B0C0D0E0F" isEqualToString:string]);
}

- (void)testHexStringToBin
{
    uint8_t *bin = [OCTTox hexStringToBin:@"000102030405060708090A0B0C0D0E0F"];

    for (NSUInteger i = 0; i < 16; i++) {
        XCTAssertTrue(bin[i] == i);
    }
}

#pragma mark -  Callbacks

- (void)testConnectionStatusCallback
{
    [self makeTestCallbackWithCallBlock:^{
        connectionStatusCallback(NULL, TOX_CONNECTION_UDP, (__bridge void *)self.tox);
    } expectBlock:^(id<OCTToxDelegate> delegate) {
        OCMExpect([self.tox.delegate tox:self.tox connectionStatus:OCTToxConnectionStatusUDP]);
    }];
}

- (void)testFriendNameCallback
{
    [self makeTestCallbackWithCallBlock:^{
        friendNameCallback(NULL, 5, (const uint8_t *)"name", 4, (__bridge void *)self.tox);
    } expectBlock:^(id<OCTToxDelegate> delegate) {
        OCMExpect([self.tox.delegate tox:self.tox friendNameUpdate:[OCMArg isEqual:@"name"] friendNumber:5]);
    }];
}

- (void)testFriendStatusMessageCallback
{
    [self makeTestCallbackWithCallBlock:^{
        friendStatusMessageCallback(NULL, 5, (const uint8_t *)"message", 7, (__bridge void *)self.tox);
    } expectBlock:^(id<OCTToxDelegate> delegate) {
        OCMExpect([self.tox.delegate tox:self.tox friendStatusMessageUpdate:[OCMArg isEqual:@"message"] friendNumber:5]);
    }];
}

- (void)testFriendStatusCallback
{
    [self makeTestCallbackWithCallBlock:^{
        friendStatusCallback(NULL, 5, TOX_USER_STATUS_BUSY, (__bridge void *)self.tox);
    } expectBlock:^(id<OCTToxDelegate> delegate) {
        OCMExpect([self.tox.delegate tox:self.tox friendStatusUpdate:OCTToxUserStatusBusy friendNumber:5]);
    }];
}

- (void)testFriendConnectionStatusCallback
{
    [self makeTestCallbackWithCallBlock:^{
        friendConnectionStatusCallback(NULL, 5, TOX_CONNECTION_UDP, (__bridge void *)self.tox);
    } expectBlock:^(id<OCTToxDelegate> delegate) {
        OCMExpect([self.tox.delegate tox:self.tox friendConnectionStatusChanged:OCTToxConnectionStatusUDP friendNumber:5]);
    }];
}

- (void)testFriendTypingCallback
{
    [self makeTestCallbackWithCallBlock:^{
        friendTypingCallback(NULL, 5, true, (__bridge void *)self.tox);
    } expectBlock:^(id<OCTToxDelegate> delegate) {
        OCMExpect([self.tox.delegate tox:self.tox friendIsTypingUpdate:YES friendNumber:5]);
    }];
}

- (void)testFriendReadReceiptCallback
{
    [self makeTestCallbackWithCallBlock:^{
        friendReadReceiptCallback(NULL, 5, 7, (__bridge void *)self.tox);
    } expectBlock:^(id<OCTToxDelegate> delegate) {
        OCMExpect([self.tox.delegate tox:self.tox messageDelivered:7 friendNumber:5]);
    }];
}

- (void)testFriendRequestCallback
{
    [self makeTestCallbackWithCallBlock:^{
        uint8_t bin[32] = {
            0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
            0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
        };

        friendRequestCallback(NULL, bin, (const uint8_t *)"message", 7, (__bridge void *)self.tox);

    } expectBlock:^(id<OCTToxDelegate> delegate) {
        NSString *publicKey =
            @"000102030405060708090A0B0C0D0E0F"
            @"000102030405060708090A0B0C0D0E0F";

        OCMExpect([self.tox.delegate tox:self.tox friendRequestWithMessage:[OCMArg isEqual:@"message"] publicKey:publicKey]);
    }];
}

- (void)testFriendMessageCallback
{
    [self makeTestCallbackWithCallBlock:^{
        friendMessageCallback(NULL, 5, TOX_MESSAGE_TYPE_ACTION, (const uint8_t *)"message", 7, (__bridge void *)self.tox);

    } expectBlock:^(id<OCTToxDelegate> delegate) {
        OCMExpect([self.tox.delegate tox:self.tox
                           friendMessage:[OCMArg isEqual:@"message"]
                                    type:OCTToxMessageTypeAction
                            friendNumber:5]);
    }];
}

- (void)testFileReceiveControlCallback
{
    [self makeTestCallbackWithCallBlock:^{
        fileReceiveControlCallback(NULL, 5, 4, TOX_FILE_CONTROL_PAUSE, (__bridge void *)self.tox);

    } expectBlock:^(id<OCTToxDelegate> delegate) {
        OCMExpect([self.tox.delegate tox:self.tox fileReceiveControl:OCTToxFileControlPause friendNumber:5 fileNumber:4]);
    }];
}

- (void)testFileChunkRequestCallback
{
    [self makeTestCallbackWithCallBlock:^{
        fileChunkRequestCallback(NULL, 5, 4, 300, 150, (__bridge void *)self.tox);

    } expectBlock:^(id<OCTToxDelegate> delegate) {
        OCMExpect([self.tox.delegate tox:self.tox fileChunkRequestForFileNumber:4 friendNumber:5 position:300 length:150]);
    }];
}

- (void)testFileReceiveCallback
{
    [self makeTestCallbackWithCallBlock:^{
        fileReceiveCallback(NULL, 5, 4, TOX_FILE_KIND_DATA, 500, (const uint8_t *)"filename", 8, (__bridge void *)self.tox);

    } expectBlock:^(id<OCTToxDelegate> delegate) {
        OCMExpect([self.tox.delegate tox:self.tox
                   fileReceiveForFileNumber:4
                               friendNumber:5
                                       kind:OCTToxFileKindData
                                   fileSize:500
                                   fileName:[OCMArg isEqual:@"filename"]]);
    }];
}

- (void)testFileReceiveChunkCallback
{
    [self makeTestCallbackWithCallBlock:^{
        fileReceiveChunkCallback(NULL, 5, 4, 250, (const uint8_t *)"data", 4, (__bridge void *)self.tox);

    } expectBlock:^(id<OCTToxDelegate> delegate) {
        NSData *data = [NSData dataWithBytes:"data" length:4];

        OCMExpect([self.tox.delegate tox:self.tox
                        fileReceiveChunk:[OCMArg isEqual:data]
                              fileNumber:4
                            friendNumber:5
                                position:250]);
    }];
}

- (void)makeTestCallbackWithCallBlock:(void (^)())callBlock expectBlock:(void (^)(id<OCTToxDelegate> delegate))expectBlock
{
    NSParameterAssert(callBlock);
    NSParameterAssert(expectBlock);

    self.tox.delegate = OCMProtocolMock(@protocol(OCTToxDelegate));
    expectBlock(self.tox.delegate);

    callBlock();

    XCTestExpectation *expectation = [self expectationWithDescription:@"callback"];

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 0.1 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
        [expectation fulfill];
    });

    [self waitForExpectationsWithTimeout:1.0 handler:nil];
    OCMVerifyAll((id)self.tox.delegate);
}

void mocked_tox_self_get_public_key(const Tox *cTox, uint8_t *public_key)
{
    OCTTox *tox = [(__bridge OCTToxTests *)refToSelf tox];

    CCCAssertTrue(cTox == tox.tox);

    uint8_t bin[32] = {
        0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
        0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
    };

    memcpy(public_key, bin, TOX_PUBLIC_KEY_SIZE);
}

@end