tests: add tests on "api" relay (general functions and messages)

9 files changed, 1039 insertions, 341 deletions

diff --git a/doc/en/weechat_dev.en.adoc b/doc/en/weechat_dev.en.adoc
index 50b54bcf4..6df5daccd 100644
--- a/doc/en/weechat_dev.en.adoc
+++ b/doc/en/weechat_dev.en.adoc
@@ -396,91 +396,95 @@ WeeChat "core" is located in following directories:
 
 [width="100%",cols="2m,3",options="header"]
 |===
-| Path/file                            | Description
-| tests/                               | Root of tests.
-|    tests.cpp                         | Program used to run all tests.
-|    tests-record.cpp                  | Record and search in messages displayed.
-|    scripts/                          | Root of scripting API tests.
-|       test-scripts.cpp               | Program used to run the scripting API tests.
-|       python/                        | Python scripts to generate and run the scripting API tests.
-|          testapigen.py               | Python script generating scripts in all languages to test the scripting API.
-|          testapi.py                  | Python script with scripting API tests, used by script testapigen.py.
-|          unparse.py                  | Convert Python code to other languages, used by script testapigen.py.
-|    unit/                             | Root of unit tests.
-|       test-plugins.cpp               | Tests: plugins.
-|       test-plugin-api-info.cpp       | Tests: plugin API info functions.
-|       test-plugin-config.cpp         | Tests: plugin config functions.
-|       core/                          | Root of unit tests for core.
-|          test-core-arraylist.cpp     | Tests: arraylists.
-|          test-core-calc.cpp          | Tests: calculation of expressions.
-|          test-core-command.cpp       | Tests: commands.
-|          test-core-config-file.cpp   | Tests: configuration files.
-|          test-core-crypto.cpp        | Tests: cryptographic functions.
-|          test-core-dir.cpp           | Tests: directory/file functions.
-|          test-core-eval.cpp          | Tests: evaluation of expressions.
-|          test-core-hashtble.cpp      | Tests: hashtables.
-|          test-core-hdata.cpp         | Tests: hdata.
-|          test-core-hook.cpp          | Tests: hooks.
-|          test-core-infolist.cpp      | Tests: infolists.
-|          test-core-list.cpp          | Tests: lists.
-|          test-core-network.cpp       | Tests: network functions.
-|          test-core-secure.cpp        | Tests: secured data.
-|          test-core-signal.cpp        | Tests: signals.
-|          test-core-string.cpp        | Tests: strings.
-|          test-core-url.cpp           | Tests: URLs.
-|          test-core-utf8.cpp          | Tests: UTF-8.
-|          test-core-util.cpp          | Tests: utility functions.
-|          test-core-sys.cpp           | Tests: system functions.
-|          hook/                       | Root of unit tests for hooks.
-|             test-hook-command.cpp    | Tests: hooks "command".
-|       gui/                           | Root of unit tests for interfaces.
-|          test-gui-bar-window.cpp     | Tests: bar window functions.
-|          test-gui-buffer.cpp         | Tests: buffer functions.
-|          test-gui-chat.cpp           | Tests: chat functions.
-|          test-gui-color.cpp          | Tests: colors.
-|          test-gui-filter.cpp         | Tests: filters.
-|          test-gui-input.cpp          | Tests: input functions.
-|          test-gui-key.cpp            | Tests: keys.
-|          test-gui-line.cpp           | Tests: lines.
-|          test-gui-nick.cpp           | Tests: nicks.
-|       plugins/                       | Root of unit tests for plugins.
-|          irc/                        | Root of unit tests for IRC plugin.
-|             test-irc-batch.cpp       | Tests: IRC batched events.
-|             test-irc-buffer.cpp      | Tests: IRC buffers.
-|             test-irc-channel.cpp     | Tests: IRC channels.
-|             test-irc-color.cpp       | Tests: IRC colors.
-|             test-irc-config.cpp      | Tests: IRC configuration.
-|             test-irc-ctcp.cpp        | Tests: IRC CTCP.
-|             test-irc-ignore.cpp      | Tests: IRC ignores.
-|             test-irc-info.cpp        | Tests: IRC info.
-|             test-irc-join.cpp        | Tests: IRC join functions.
-|             test-irc-list.cpp        | Tests: IRC buffer for reply to /list command.
-|             test-irc-message.cpp     | Tests: IRC messages.
-|             test-irc-mode.cpp        | Tests: IRC modes.
-|             test-irc-nick.cpp        | Tests: IRC nicks.
-|             test-irc-protocol.cpp    | Tests: IRC protocol.
-|             test-irc-sasl.cpp        | Tests: SASL authentication with IRC protocol.
-|             test-irc-server.cpp      | Tests: IRC server.
-|             test-irc-tag.cpp         | Tests: IRC message tags.
-|          logger/                     | Root of unit tests for logger plugin.
-|             test-logger.cpp          | Tests: logger.
-|             test-logger-backlog.cpp  | Tests: logger backlog.
-|             test-logger-tail.cpp     | Tests: logger tail functions.
-|          trigger/                    | Root of unit tests for trigger plugin.
-|             test-trigger.cpp         | Tests: triggers.
-|             test-trigger-config.cpp  | Tests: trigger configuration.
-|          typing/                     | Root of unit tests for typing plugin.
-|             test-typing.cpp          | Tests: typing.
-|             test-typing-status.cpp   | Tests: typing status.
-|          relay/                      | Root of unit tests for Relay plugin.
-|             test-relay-auth.cpp      | Tests: clients authentication.
-|             test-relay-http.cpp      | Tests: HTTP functions for Relay plugin.
-|             test-relay-websocket.cpp | Tests: websocket functions for Relay plugin.
-|             irc/                     | Root of unit tests for Relay "irc" protocol.
-|                test-relay-irc.cpp    | Tests: Relay "irc" protocol.
-|          xfer/                       | Root of unit tests for Xfer plugin.
-|             test-xfer-file.cpp       | Tests: file functions.
-|             test-xfer-network.cpp    | Tests: network functions.
+| Path/file                                  | Description
+| tests/                                     | Root of tests.
+|    tests.cpp                               | Program used to run all tests.
+|    tests-record.cpp                        | Record and search in messages displayed.
+|    scripts/                                | Root of scripting API tests.
+|       test-scripts.cpp                     | Program used to run the scripting API tests.
+|       python/                              | Python scripts to generate and run the scripting API tests.
+|          testapigen.py                     | Python script generating scripts in all languages to test the scripting API.
+|          testapi.py                        | Python script with scripting API tests, used by script testapigen.py.
+|          unparse.py                        | Convert Python code to other languages, used by script testapigen.py.
+|    unit/                                   | Root of unit tests.
+|       test-plugins.cpp                     | Tests: plugins.
+|       test-plugin-api-info.cpp             | Tests: plugin API info functions.
+|       test-plugin-config.cpp               | Tests: plugin config functions.
+|       core/                                | Root of unit tests for core.
+|          test-core-arraylist.cpp           | Tests: arraylists.
+|          test-core-calc.cpp                | Tests: calculation of expressions.
+|          test-core-command.cpp             | Tests: commands.
+|          test-core-config-file.cpp         | Tests: configuration files.
+|          test-core-crypto.cpp              | Tests: cryptographic functions.
+|          test-core-dir.cpp                 | Tests: directory/file functions.
+|          test-core-eval.cpp                | Tests: evaluation of expressions.
+|          test-core-hashtble.cpp            | Tests: hashtables.
+|          test-core-hdata.cpp               | Tests: hdata.
+|          test-core-hook.cpp                | Tests: hooks.
+|          test-core-infolist.cpp            | Tests: infolists.
+|          test-core-list.cpp                | Tests: lists.
+|          test-core-network.cpp             | Tests: network functions.
+|          test-core-secure.cpp              | Tests: secured data.
+|          test-core-signal.cpp              | Tests: signals.
+|          test-core-string.cpp              | Tests: strings.
+|          test-core-url.cpp                 | Tests: URLs.
+|          test-core-utf8.cpp                | Tests: UTF-8.
+|          test-core-util.cpp                | Tests: utility functions.
+|          test-core-sys.cpp                 | Tests: system functions.
+|          hook/                             | Root of unit tests for hooks.
+|             test-hook-command.cpp          | Tests: hooks "command".
+|       gui/                                 | Root of unit tests for interfaces.
+|          test-gui-bar-window.cpp           | Tests: bar window functions.
+|          test-gui-buffer.cpp               | Tests: buffer functions.
+|          test-gui-chat.cpp                 | Tests: chat functions.
+|          test-gui-color.cpp                | Tests: colors.
+|          test-gui-filter.cpp               | Tests: filters.
+|          test-gui-input.cpp                | Tests: input functions.
+|          test-gui-key.cpp                  | Tests: keys.
+|          test-gui-line.cpp                 | Tests: lines.
+|          test-gui-nick.cpp                 | Tests: nicks.
+|       plugins/                             | Root of unit tests for plugins.
+|          irc/                              | Root of unit tests for IRC plugin.
+|             test-irc-batch.cpp             | Tests: IRC batched events.
+|             test-irc-buffer.cpp            | Tests: IRC buffers.
+|             test-irc-channel.cpp           | Tests: IRC channels.
+|             test-irc-color.cpp             | Tests: IRC colors.
+|             test-irc-config.cpp            | Tests: IRC configuration.
+|             test-irc-ctcp.cpp              | Tests: IRC CTCP.
+|             test-irc-ignore.cpp            | Tests: IRC ignores.
+|             test-irc-info.cpp              | Tests: IRC info.
+|             test-irc-join.cpp              | Tests: IRC join functions.
+|             test-irc-list.cpp              | Tests: IRC buffer for reply to /list command.
+|             test-irc-message.cpp           | Tests: IRC messages.
+|             test-irc-mode.cpp              | Tests: IRC modes.
+|             test-irc-nick.cpp              | Tests: IRC nicks.
+|             test-irc-protocol.cpp          | Tests: IRC protocol.
+|             test-irc-sasl.cpp              | Tests: SASL authentication with IRC protocol.
+|             test-irc-server.cpp            | Tests: IRC server.
+|             test-irc-tag.cpp               | Tests: IRC message tags.
+|          logger/                           | Root of unit tests for logger plugin.
+|             test-logger.cpp                | Tests: logger.
+|             test-logger-backlog.cpp        | Tests: logger backlog.
+|             test-logger-tail.cpp           | Tests: logger tail functions.
+|          trigger/                          | Root of unit tests for trigger plugin.
+|             test-trigger.cpp               | Tests: triggers.
+|             test-trigger-config.cpp        | Tests: trigger configuration.
+|          typing/                           | Root of unit tests for typing plugin.
+|             test-typing.cpp                | Tests: typing.
+|             test-typing-status.cpp         | Tests: typing status.
+|          relay/                            | Root of unit tests for Relay plugin.
+|             test-relay-auth.cpp            | Tests: clients authentication.
+|             test-relay-http.cpp            | Tests: HTTP functions for Relay plugin.
+|             test-relay-websocket.cpp       | Tests: websocket functions for Relay plugin.
+|             api/                           | Root of unit tests for Relay "api" protocol.
+|                test-relay-api.cpp          | Tests: Relay "api" protocol: general functions.
+|                test-relay-api-msg.cpp      | Tests: Relay "api" protocol: messages.
+|                test-relay-api-protocol.cpp | Tests: Relay "api" protocol: protocol.
+|             irc/                           | Root of unit tests for Relay "irc" protocol.
+|                test-relay-irc.cpp          | Tests: Relay "irc" protocol.
+|          xfer/                             | Root of unit tests for Xfer plugin.
+|             test-xfer-file.cpp             | Tests: file functions.
+|             test-xfer-network.cpp          | Tests: network functions.
 |===
 
 [[documentation_translations]]
diff --git a/doc/fr/weechat_dev.fr.adoc b/doc/fr/weechat_dev.fr.adoc
index 51fb1045a..7b2f7c281 100644
--- a/doc/fr/weechat_dev.fr.adoc
+++ b/doc/fr/weechat_dev.fr.adoc
@@ -398,91 +398,95 @@ Le cœur de WeeChat est situé dans les répertoires suivants :
 
 [width="100%",cols="2m,3",options="header"]
 |===
-| Chemin/fichier                       | Description
-| tests/                               | Racine des tests.
-|    tests.cpp                         | Programme utilisé pour lancer tous les tests.
-|    tests-record.cpp                  | Enregistrement et recherche dans les messages affichés.
-|    scripts/                          | Racine des tests de l'API script.
-|       test-scripts.cpp               | Programme utilisé pour lancer les tests de l'API script.
-|       python/                        | Scripts Python pour générer et lancer les tests de l'API script.
-|          testapigen.py               | Script Python générant des scripts dans tous les languages pour tester l'API script.
-|          testapi.py                  | Script Python avec les tests API, utilisé par le script testapigen.py.
-|          unparse.py                  | Conversion de code Python vers d'autres langages, utilisé par le script testapigen.py.
-|    unit/                             | Racine des tests unitaires.
-|       test-plugins.cpp               | Tests : extensions.
-|       test-plugin-api-info.cpp       | Tests : fonctions info de l'API extension.
-|       test-plugin-config.cpp         | Tests : fonctions config de l'extension.
-|       core/                          | Racine des tests unitaires pour le cœur.
-|          test-core-arraylist.cpp     | Tests : listes avec tableau (« arraylists »).
-|          test-core-calc.cpp          | Tests : calcul d'expressions.
-|          test-core-command.cpp       | Tests : commandes.
-|          test-core-config-file.cpp   | Tests : fichiers de configuration.
-|          test-core-crypto.cpp        | Tests : fonctions cryptographiques.
-|          test-core-dir.cpp           | Tests : répertoires/fichiers.
-|          test-core-eval.cpp          | Tests : évaluation d'expressions.
-|          test-core-hashtble.cpp      | Tests : tables de hachage.
-|          test-core-hdata.cpp         | Tests : hdata.
-|          test-core-hook.cpp          | Tests : hooks.
-|          test-core-infolist.cpp      | Tests : infolists.
-|          test-core-list.cpp          | Tests : listes.
-|          test-core-network.cpp       | Tests : fonctions réseau.
-|          test-core-secure.cpp        | Tests : données sécurisées.
-|          test-core-signal.cpp        | Tests : signaux.
-|          test-core-string.cpp        | Tests : chaînes.
-|          test-core-url.cpp           | Tests : URLs.
-|          test-core-utf8.cpp          | Tests : UTF-8.
-|          test-core-util.cpp          | Tests : fonctions utiles.
-|          test-core-sys.cpp           | Tests : fonctions système.
-|          hook/                       | Racine des tests pour les hooks.
-|             test-hook-command.cpp    | Tests : hooks "command".
-|       gui/                           | Racine des tests unitaires pour les interfaces.
-|          test-gui-bar-window.cpp     | Tests : fonctions de fenêtres de barre.
-|          test-gui-buffer.cpp         | Tests : fonctions de tampons.
-|          test-gui-chat.cpp           | Tests : fonctions de discussion.
-|          test-gui-color.cpp          | Tests : couleurs.
-|          test-gui-filter.cpp         | Tests : filtres.
-|          test-gui-input.cpp          | Tests : fonctions d'entrée.
-|          test-gui-key.cpp            | Tests : touches.
-|          test-gui-line.cpp           | Tests : lignes.
-|          test-gui-nick.cpp           | Tests : pseudos.
-|       plugins/                       | Racine des tests unitaires pour les extensions.
-|          irc/                        | Racine des tests unitaires pour l'extension IRC.
-|             test-irc-batch.cpp       | Tests : évènements batch IRC.
-|             test-irc-buffer.cpp      | Tests : tampons IRC.
-|             test-irc-channel.cpp     | Tests : canaux IRC.
-|             test-irc-color.cpp       | Tests : couleurs IRC.
-|             test-irc-config.cpp      | Tests : configuration IRC.
-|             test-irc-ctcp.cpp        | Tests : CTCP IRC.
-|             test-irc-ignore.cpp      | Tests : ignores IRC.
-|             test-irc-info.cpp        | Tests : infos IRC.
-|             test-irc-join.cpp        | Tests : fonctions de join IRC.
-|             test-irc-list.cpp        | Tests : tampon IRC pour la réponse à la commande /list.
-|             test-irc-message.cpp     | Tests : messages IRC.
-|             test-irc-mode.cpp        | Tests : modes IRC.
-|             test-irc-nick.cpp        | Tests : pseudos IRC.
-|             test-irc-protocol.cpp    | Tests : protocole IRC.
-|             test-irc-sasl.cpp        | Tests : authentification SASL avec le protocole IRC.
-|             test-irc-server.cpp      | Tests : serveur IRC.
-|             test-irc-tag.cpp         | Tests : étiquettes des messages IRC.
-|          logger/                     | Racine des tests unitaires pour l'extension logger.
-|             test-logger.cpp          | Tests : logger.
-|             test-logger-backlog.cpp  | Tests : backlog logger.
-|             test-logger-tail.cpp     | Tests : fonctions "tail".
-|          trigger/                    | Racine des tests unitaires pour l'extension trigger.
-|             test-trigger.cpp         | Tests : triggers.
-|             test-trigger-config.cpp  | Tests : configuration trigger.
-|          typing/                     | Racine des tests unitaires pour l'extension typing.
-|             test-typing.cpp          | Tests : typing.
-|             test-typing-status.cpp   | Tests : statut d'écriture.
-|          relay/                      | Racine des tests unitaires pour l'extension Relay.
-|             test-relay-auth.cpp      | Tests : authentification des clients.
-|             test-relay-http.cpp      | Tests : fonctions HTTP pour l'extension Relay.
-|             test-relay-websocket.cpp | Tests : fonctions websocket pour l'extension Relay.
-|             irc/                     | Racine des tests unitaires pour le protocole relay "irc".
-|                test-relay-irc.cpp    | Tests : Protocole relay "irc".
-|          xfer/                       | Racine des tests unitaires pour l'extension Xfer.
-|             test-xfer-file.cpp       | Tests : fonctions sur les fichiers.
-|             test-xfer-network.cpp    | Tests : fonctions réseau.
+| Chemin/fichier                             | Description
+| tests/                                     | Racine des tests.
+|    tests.cpp                               | Programme utilisé pour lancer tous les tests.
+|    tests-record.cpp                        | Enregistrement et recherche dans les messages affichés.
+|    scripts/                                | Racine des tests de l'API script.
+|       test-scripts.cpp                     | Programme utilisé pour lancer les tests de l'API script.
+|       python/                              | Scripts Python pour générer et lancer les tests de l'API script.
+|          testapigen.py                     | Script Python générant des scripts dans tous les languages pour tester l'API script.
+|          testapi.py                        | Script Python avec les tests API, utilisé par le script testapigen.py.
+|          unparse.py                        | Conversion de code Python vers d'autres langages, utilisé par le script testapigen.py.
+|    unit/                                   | Racine des tests unitaires.
+|       test-plugins.cpp                     | Tests : extensions.
+|       test-plugin-api-info.cpp             | Tests : fonctions info de l'API extension.
+|       test-plugin-config.cpp               | Tests : fonctions config de l'extension.
+|       core/                                | Racine des tests unitaires pour le cœur.
+|          test-core-arraylist.cpp           | Tests : listes avec tableau (« arraylists »).
+|          test-core-calc.cpp                | Tests : calcul d'expressions.
+|          test-core-command.cpp             | Tests : commandes.
+|          test-core-config-file.cpp         | Tests : fichiers de configuration.
+|          test-core-crypto.cpp              | Tests : fonctions cryptographiques.
+|          test-core-dir.cpp                 | Tests : répertoires/fichiers.
+|          test-core-eval.cpp                | Tests : évaluation d'expressions.
+|          test-core-hashtble.cpp            | Tests : tables de hachage.
+|          test-core-hdata.cpp               | Tests : hdata.
+|          test-core-hook.cpp                | Tests : hooks.
+|          test-core-infolist.cpp            | Tests : infolists.
+|          test-core-list.cpp                | Tests : listes.
+|          test-core-network.cpp             | Tests : fonctions réseau.
+|          test-core-secure.cpp              | Tests : données sécurisées.
+|          test-core-signal.cpp              | Tests : signaux.
+|          test-core-string.cpp              | Tests : chaînes.
+|          test-core-url.cpp                 | Tests : URLs.
+|          test-core-utf8.cpp                | Tests : UTF-8.
+|          test-core-util.cpp                | Tests : fonctions utiles.
+|          test-core-sys.cpp                 | Tests : fonctions système.
+|          hook/                             | Racine des tests pour les hooks.
+|             test-hook-command.cpp          | Tests : hooks "command".
+|       gui/                                 | Racine des tests unitaires pour les interfaces.
+|          test-gui-bar-window.cpp           | Tests : fonctions de fenêtres de barre.
+|          test-gui-buffer.cpp               | Tests : fonctions de tampons.
+|          test-gui-chat.cpp                 | Tests : fonctions de discussion.
+|          test-gui-color.cpp                | Tests : couleurs.
+|          test-gui-filter.cpp               | Tests : filtres.
+|          test-gui-input.cpp                | Tests : fonctions d'entrée.
+|          test-gui-key.cpp                  | Tests : touches.
+|          test-gui-line.cpp                 | Tests : lignes.
+|          test-gui-nick.cpp                 | Tests : pseudos.
+|       plugins/                             | Racine des tests unitaires pour les extensions.
+|          irc/                              | Racine des tests unitaires pour l'extension IRC.
+|             test-irc-batch.cpp             | Tests : évènements batch IRC.
+|             test-irc-buffer.cpp            | Tests : tampons IRC.
+|             test-irc-channel.cpp           | Tests : canaux IRC.
+|             test-irc-color.cpp             | Tests : couleurs IRC.
+|             test-irc-config.cpp            | Tests : configuration IRC.
+|             test-irc-ctcp.cpp              | Tests : CTCP IRC.
+|             test-irc-ignore.cpp            | Tests : ignores IRC.
+|             test-irc-info.cpp              | Tests : infos IRC.
+|             test-irc-join.cpp              | Tests : fonctions de join IRC.
+|             test-irc-list.cpp              | Tests : tampon IRC pour la réponse à la commande /list.
+|             test-irc-message.cpp           | Tests : messages IRC.
+|             test-irc-mode.cpp              | Tests : modes IRC.
+|             test-irc-nick.cpp              | Tests : pseudos IRC.
+|             test-irc-protocol.cpp          | Tests : protocole IRC.
+|             test-irc-sasl.cpp              | Tests : authentification SASL avec le protocole IRC.
+|             test-irc-server.cpp            | Tests : serveur IRC.
+|             test-irc-tag.cpp               | Tests : étiquettes des messages IRC.
+|          logger/                           | Racine des tests unitaires pour l'extension logger.
+|             test-logger.cpp                | Tests : logger.
+|             test-logger-backlog.cpp        | Tests : backlog logger.
+|             test-logger-tail.cpp           | Tests : fonctions "tail".
+|          trigger/                          | Racine des tests unitaires pour l'extension trigger.
+|             test-trigger.cpp               | Tests : triggers.
+|             test-trigger-config.cpp        | Tests : configuration trigger.
+|          typing/                           | Racine des tests unitaires pour l'extension typing.
+|             test-typing.cpp                | Tests : typing.
+|             test-typing-status.cpp         | Tests : statut d'écriture.
+|          relay/                            | Racine des tests unitaires pour l'extension Relay.
+|             test-relay-auth.cpp            | Tests : authentification des clients.
+|             test-relay-http.cpp            | Tests : fonctions HTTP pour l'extension Relay.
+|             test-relay-websocket.cpp       | Tests : fonctions websocket pour l'extension Relay.
+|             api/                           | Racine des tests unitaires pour le protocole relay "api".
+|                test-relay-api.cpp          | Tests : protocole relay "api" : fonctions générales.
+|                test-relay-api-msg.cpp      | Tests : protocole relay "api" : messages.
+|                test-relay-api-protocol.cpp | Tests : protocole relay "api" : protocole.
+|             irc/                           | Racine des tests unitaires pour le protocole relay "irc".
+|                test-relay-irc.cpp          | Tests : protocole relay "irc".
+|          xfer/                             | Racine des tests unitaires pour l'extension Xfer.
+|             test-xfer-file.cpp             | Tests : fonctions sur les fichiers.
+|             test-xfer-network.cpp          | Tests : fonctions réseau.
 |===
 
 [[documentation_translations]]
diff --git a/doc/ja/weechat_dev.ja.adoc b/doc/ja/weechat_dev.ja.adoc
index 3c7da75b8..189e0bed6 100644
--- a/doc/ja/weechat_dev.ja.adoc
+++ b/doc/ja/weechat_dev.ja.adoc
@@ -428,145 +428,153 @@ WeeChat "core" は以下のディレクトリに配置されています:
 
 [width="100%",cols="2m,3",options="header"]
 |===
-| パス/ファイル名                      | 説明
-| tests/                               | テスト用のルートディレクトリ
-|    tests.cpp                         | 全テストの実行時に使われるプログラム
+| パス/ファイル名                            | 説明
+| tests/                                     | テスト用のルートディレクトリ
+|    tests.cpp                               | 全テストの実行時に使われるプログラム
 // TRANSLATION MISSING
-|    tests-record.cpp                  | Record and search in messages displayed.
-|    scripts/                          | スクリプト API テスト用のルートディレクトリ
-|       test-scripts.cpp               | スクリプト API テストの実行時に使われるプログラム
-|       python/                        | スクリプト API テストを生成、実行する Python スクリプト
-|          testapigen.py               | スクリプト API のテスト時にすべての言語に関するスクリプトを生成する Python スクリプト
-|          testapi.py                  | スクリプト API テスト時に使われる Python スクリプト (スクリプト testapigen.py から使われます)
-|          unparse.py                  | Python コードを別の言語に変換 (スクリプト testapigen.py から使われます)
-|    unit/                             | 単体テスト用のルートディレクトリ
-|       test-plugins.cpp               | テスト: プラグイン
+|    tests-record.cpp                        | Record and search in messages displayed.
+|    scripts/                                | スクリプト API テスト用のルートディレクトリ
+|       test-scripts.cpp                     | スクリプト API テストの実行時に使われるプログラム
+|       python/                              | スクリプト API テストを生成、実行する Python スクリプト
+|          testapigen.py                     | スクリプト API のテスト時にすべての言語に関するスクリプトを生成する Python スクリプト
+|          testapi.py                        | スクリプト API テスト時に使われる Python スクリプト (スクリプト testapigen.py から使われます)
+|          unparse.py                        | Python コードを別の言語に変換 (スクリプト testapigen.py から使われます)
+|    unit/                                   | 単体テスト用のルートディレクトリ
+|       test-plugins.cpp                     | テスト: プラグイン
 // TRANSLATION MISSING
-|       test-plugin-api-info.cpp       | Tests: plugin API info functions.
+|       test-plugin-api-info.cpp             | Tests: plugin API info functions.
 // TRANSLATION MISSING
-|       test-plugin-config.cpp         | Tests: plugin config functions.
-|       core/                          | core 向け単体テスト用のルートディレクトリ
-|          test-core-arraylist.cpp     | テスト: 配列リスト
+|       test-plugin-config.cpp               | Tests: plugin config functions.
+|       core/                                | core 向け単体テスト用のルートディレクトリ
+|          test-core-arraylist.cpp           | テスト: 配列リスト
 // TRANSLATION MISSING
-|          test-core-calc.cpp          | Tests: calculation of expressions.
+|          test-core-calc.cpp                | Tests: calculation of expressions.
 // TRANSLATION MISSING
-|          test-core-command.cpp       | Tests: commands.
+|          test-core-command.cpp             | Tests: commands.
 // TRANSLATION MISSING
-|          test-core-config-file.cpp   | Tests: configuration files.
+|          test-core-config-file.cpp         | Tests: configuration files.
 // TRANSLATION MISSING
-|          test-core-crypto.cpp        | Tests: cryptographic functions.
+|          test-core-crypto.cpp              | Tests: cryptographic functions.
 // TRANSLATION MISSING
-|          test-core-dir.cpp           | Tests: directory/file functions.
-|          test-core-eval.cpp          | テスト: 式の評価
-|          test-core-hashtble.cpp      | テスト: ハッシュテーブル
-|          test-core-hdata.cpp         | テスト: hdata
-|          test-core-hook.cpp          | テスト: フック
-|          test-core-infolist.cpp      | テスト: インフォリスト
-|          test-core-list.cpp          | テスト: リスト
+|          test-core-dir.cpp                 | Tests: directory/file functions.
+|          test-core-eval.cpp                | テスト: 式の評価
+|          test-core-hashtble.cpp            | テスト: ハッシュテーブル
+|          test-core-hdata.cpp               | テスト: hdata
+|          test-core-hook.cpp                | テスト: フック
+|          test-core-infolist.cpp            | テスト: インフォリスト
+|          test-core-list.cpp                | テスト: リスト
 // TRANSLATION MISSING
-|          test-core-network.cpp       | Tests: network functions.
-|          test-core-secure.cpp        | テスト: データ保護
+|          test-core-network.cpp             | Tests: network functions.
+|          test-core-secure.cpp              | テスト: データ保護
 // TRANSLATION MISSING
-|          test-core-signal.cpp        | テスト: signals.
-|          test-core-string.cpp        | テスト: 文字列
-|          test-core-url.cpp           | テスト: URL
-|          test-core-utf8.cpp          | テスト: UTF-8
-|          test-core-util.cpp          | テスト: ユーティリティ関数
+|          test-core-signal.cpp              | テスト: signals.
+|          test-core-string.cpp              | テスト: 文字列
+|          test-core-url.cpp                 | テスト: URL
+|          test-core-utf8.cpp                | テスト: UTF-8
+|          test-core-util.cpp                | テスト: ユーティリティ関数
 // TRANSLATION MISSING
-|          test-core-sys.cpp           | Tests: system functions.
+|          test-core-sys.cpp                 | Tests: system functions.
 // TRANSLATION MISSING
-|          hook/                       | Root of unit tests for hooks.
+|          hook/                             | Root of unit tests for hooks.
 // TRANSLATION MISSING
-|             test-hook-command.cpp    | Tests: hooks "command".
-|       gui/                           | インターフェースの単体テストを収める最上位ディレクトリ
+|             test-hook-command.cpp          | Tests: hooks "command".
+|       gui/                                 | インターフェースの単体テストを収める最上位ディレクトリ
 // TRANSLATION MISSING
-|          test-gui-bar-window.cpp     | Tests: bar window functions.
+|          test-gui-bar-window.cpp           | Tests: bar window functions.
 // TRANSLATION MISSING
-|          test-gui-buffer.cpp         | Tests: buffer functions.
+|          test-gui-buffer.cpp               | Tests: buffer functions.
 // TRANSLATION MISSING
-|          test-gui-chat.cpp           | Tests: chat functions.
+|          test-gui-chat.cpp                 | Tests: chat functions.
 // TRANSLATION MISSING
-|          test-gui-color.cpp          | Tests: colors.
+|          test-gui-color.cpp                | Tests: colors.
 // TRANSLATION MISSING
-|          test-gui-filter.cpp         | Tests: filters.
+|          test-gui-filter.cpp               | Tests: filters.
 // TRANSLATION MISSING
-|          test-gui-input.cpp          | Tests: input functions.
+|          test-gui-input.cpp                | Tests: input functions.
 // TRANSLATION MISSING
-|          test-gui-key.cpp            | Tests: keys.
-|          test-gui-line.cpp           | テスト: 行
+|          test-gui-key.cpp                  | Tests: keys.
+|          test-gui-line.cpp                 | テスト: 行
 // TRANSLATION MISSING
-|          test-gui-nick.cpp           | テスト: nicks
-|       plugins/                       | プラグインの単体テストを収める最上位ディレクトリ
-|          irc/                        | IRC プラグインの単体テストを収める最上位ディレクトリ
+|          test-gui-nick.cpp                 | テスト: nicks
+|       plugins/                             | プラグインの単体テストを収める最上位ディレクトリ
+|          irc/                              | IRC プラグインの単体テストを収める最上位ディレクトリ
 // TRANSLATION MISSING
-|             test-irc-batch.cpp       | Tests: IRC batched events.
+|             test-irc-batch.cpp             | Tests: IRC batched events.
 // TRANSLATION MISSING
-|             test-irc-buffer.cpp      | Tests: IRC buffers.
+|             test-irc-buffer.cpp            | Tests: IRC buffers.
 // TRANSLATION MISSING
-|             test-irc-channel.cpp     | Tests: IRC channels.
-|             test-irc-color.cpp       | Tests: IRC colors.
-|             test-irc-config.cpp      | テスト: IRC 設定
+|             test-irc-channel.cpp           | Tests: IRC channels.
+|             test-irc-color.cpp             | Tests: IRC colors.
+|             test-irc-config.cpp            | テスト: IRC 設定
 // TRANSLATION MISSING
-|             test-irc-ctcp.cpp        | Tests: IRC CTCP.
+|             test-irc-ctcp.cpp              | Tests: IRC CTCP.
 // TRANSLATION MISSING
-|             test-irc-ignore.cpp      | Tests: IRC ignores.
+|             test-irc-ignore.cpp            | Tests: IRC ignores.
 // TRANSLATION MISSING
-|             test-irc-info.cpp        | Tests: IRC info.
+|             test-irc-info.cpp              | Tests: IRC info.
 // TRANSLATION MISSING
-|             test-irc-join.cpp        | Tests: IRC join functions.
+|             test-irc-join.cpp              | Tests: IRC join functions.
 // TRANSLATION MISSING
-|             test-irc-list.cpp        | Tests: IRC buffer for reply to /list command.
+|             test-irc-list.cpp              | Tests: IRC buffer for reply to /list command.
 // TRANSLATION MISSING
-|             test-irc-message.cpp     | Tests: IRC messages.
+|             test-irc-message.cpp           | Tests: IRC messages.
 // TRANSLATION MISSING
-|             test-irc-mode.cpp        | Tests: IRC modes.
+|             test-irc-mode.cpp              | Tests: IRC modes.
 // TRANSLATION MISSING
-|             test-irc-nick.cpp        | Tests: IRC nicks.
-|             test-irc-protocol.cpp    | テスト: IRC プロトコル
+|             test-irc-nick.cpp              | Tests: IRC nicks.
+|             test-irc-protocol.cpp          | テスト: IRC プロトコル
 // TRANSLATION MISSING
-|             test-irc-sasl.cpp        | Tests: SASL authentication with IRC protocol.
+|             test-irc-sasl.cpp              | Tests: SASL authentication with IRC protocol.
 // TRANSLATION MISSING
-|             test-irc-server.cpp      | Tests: IRC server.
+|             test-irc-server.cpp            | Tests: IRC server.
 // TRANSLATION MISSING
-|             test-irc-tag.cpp         | Tests: IRC message tags.
+|             test-irc-tag.cpp               | Tests: IRC message tags.
 // TRANSLATION MISSING
-|          logger/                     | Root of unit tests for logger plugin.
+|          logger/                           | Root of unit tests for logger plugin.
 // TRANSLATION MISSING
-|             test-logger.cpp          | Tests: logger.
+|             test-logger.cpp                | Tests: logger.
 // TRANSLATION MISSING
-|             test-logger-backlog.cpp  | Tests: logger backlog.
+|             test-logger-backlog.cpp        | Tests: logger backlog.
 // TRANSLATION MISSING
-|             test-logger-tail.cpp     | Tests: logger tail functions.
+|             test-logger-tail.cpp           | Tests: logger tail functions.
 // TRANSLATION MISSING
-|          trigger/                    | Root of unit tests for trigger plugin.
+|          trigger/                          | Root of unit tests for trigger plugin.
 // TRANSLATION MISSING
-|             test-trigger.cpp         | Tests: triggers.
+|             test-trigger.cpp               | Tests: triggers.
 // TRANSLATION MISSING
-|             test-trigger-config.cpp  | Tests: trigger configuration.
+|             test-trigger-config.cpp        | Tests: trigger configuration.
 // TRANSLATION MISSING
-|          typing/                     | Root of unit tests for typing plugin.
+|          typing/                           | Root of unit tests for typing plugin.
 // TRANSLATION MISSING
-|             test-typing.cpp          | Tests: typing.
+|             test-typing.cpp                | Tests: typing.
 // TRANSLATION MISSING
-|             test-typing-status.cpp   | Tests: typing status.
+|             test-typing-status.cpp         | Tests: typing status.
 // TRANSLATION MISSING
-|          relay/                      | Root of unit tests for Relay plugin.
+|          relay/                            | Root of unit tests for Relay plugin.
 // TRANSLATION MISSING
-|             test-relay-auth.cpp      | Tests: clients authentication.
+|             test-relay-auth.cpp            | Tests: clients authentication.
 // TRANSLATION MISSING
-|             test-relay-http.cpp      | Tests: HTTP functions for Relay plugin.
+|             test-relay-http.cpp            | Tests: HTTP functions for Relay plugin.
 // TRANSLATION MISSING
-|             test-relay-websocket.cpp | Tests: websocket functions for Relay plugin.
+|             test-relay-websocket.cpp       | Tests: websocket functions for Relay plugin.
 // TRANSLATION MISSING
-|             irc/                     | Root of unit tests for Relay "irc" protocol.
+|             api/                           | Root of unit tests for Relay "api" protocol.
 // TRANSLATION MISSING
-|                test-relay-irc.cpp    | Tests: Relay "irc" protocol.
+|                test-relay-api.cpp          | Tests: Relay "api" protocol: general functions.
 // TRANSLATION MISSING
-|          xfer/                       | Root of unit tests for Xfer plugin.
+|                test-relay-api-msg.cpp      | Tests: Relay "api" protocol: messages.
 // TRANSLATION MISSING
-|             test-xfer-file.cpp       | Tests: file functions.
+|                test-relay-api-protocol.cpp | Tests: Relay "api" protocol: protocol.
 // TRANSLATION MISSING
-|             test-xfer-network.cpp    | Tests: network functions.
+|             irc/                           | Root of unit tests for Relay "irc" protocol.
+// TRANSLATION MISSING
+|                test-relay-irc.cpp          | Tests: Relay "irc" protocol.
+// TRANSLATION MISSING
+|          xfer/                             | Root of unit tests for Xfer plugin.
+// TRANSLATION MISSING
+|             test-xfer-file.cpp             | Tests: file functions.
+// TRANSLATION MISSING
+|             test-xfer-network.cpp          | Tests: network functions.
 |===
 
 [[documentation_translations]]
diff --git a/doc/sr/weechat_dev.sr.adoc b/doc/sr/weechat_dev.sr.adoc
index 7473624d2..5ad083c99 100644
--- a/doc/sr/weechat_dev.sr.adoc
+++ b/doc/sr/weechat_dev.sr.adoc
@@ -404,93 +404,97 @@ WeeChat „језгро” се налази у следећим директо�
 
 [width="100%", cols="2m,3", options="header"]
 |===
-| Путања/фајл                          | Опис
-| tests/                               | Корен тестова.
-|    tests.cpp                         | Програм који се користи за извршавање свих тестова.
-|    tests-record.cpp                  | Бележење и претрага у приказаним порукама.
-|    scripts/                          | Корен тестова за API скриптовања.
-|       test-scripts.cpp               | Програм који се користи за извршавање тестова API скриптовања.
-|       python/                        | Python скрипте које генеришу и покрећу тестове API скриптовања.
-|          testapigen.py               | Python скрипта која генерише скрипте на свим језицима за тестирање API скриптовања.
-|          testapi.py                  | Python скрипта са тестовима API скриптовања, користи је скрипта testapigen.py.
-|          unparse.py                  | Конверзија Python кода у остале језике, користи је скрипта testapigen.py.
-|    unit/                             | Корен unit тестова.
-|       test-plugins.cpp               | Тестови: plugins.
-|       test-plugin-api-info.cpp       | Тестови: инфо функције API додатака.
-|       test-plugin-config.cpp         | Тестови: функције конфигурације додатка.
-|       core/                          | Корен unit тестова језгра.
-|          test-core-arraylist.cpp     | Тестови: arraylists.
-|          test-core-calc.cpp          | Тестови: калкулација израза.
-|          test-core-command.cpp       | Тестови: команде.
-|          test-core-config-file.cpp   | Тестови: конфигурациони фајлови.
-|          test-core-crypto.cpp        | Тестови: криптографске функције.
-|          test-core-dir.cpp           | Тестови: функције директоријума/фајла.
-|          test-core-eval.cpp          | Тестови: израчунавање израза.
-|          test-core-hashtble.cpp      | Тестови: hashtables.
-|          test-core-hdata.cpp         | Тестови: hdata.
-|          test-core-hook.cpp          | Тестови: куке.
-|          test-core-infolist.cpp      | Тестови: infolists.
-|          test-core-list.cpp          | Тестови: листе.
-|          test-core-network.cpp       | Тестови: мрежне функције.
-|          test-core-secure.cpp        | Тестови: обезбеђени подаци.
-|          test-core-signal.cpp        | Тестови: сигнали.
-|          test-core-string.cpp        | Тестови: стрингови.
-|          test-core-url.cpp           | Тестови: URL адресе.
-|          test-core-utf8.cpp          | Тестови: UTF-8.
-|          test-core-util.cpp          | Тестови: помоћне функције.
-|          test-core-sys.cpp           | Тестови: системске функције.
-|          hook/                       | Корен unit тестова за куке.
-|             test-hook-command.cpp    | Тестови: куке „command”.
-|       gui/                           | Корен unit тестова интерфејса.
-|          test-gui-bar-window.cpp     | Тестови: функције прозора траке.
-|          test-gui-buffer.cpp         | Тестови: бафер функције.
-|          test-gui-chat.cpp           | Тестови: чет функције.
-|          test-gui-color.cpp          | Тестови: боје.
-|          test-gui-filter.cpp         | Тестови: филтери.
-|          test-gui-input.cpp          | Тестови: улазне функкције.
-|          test-gui-key.cpp            | Тестови: тастери.
-|          test-gui-line.cpp           | Тестови: линије.
-|          test-gui-nick.cpp           | Тестови: надимци.
-|       plugins/                       | Корен unit тестова додатака.
-|          irc/                        | Корен unit тестова IRC додатка.
-|             test-irc-batch.cpp       | Тестови: IRC пакетни догађаји.
-|             test-irc-buffer.cpp      | Тестови: IRC бафери.
-|             test-irc-channel.cpp     | Тестови: IRC канали.
-|             test-irc-color.cpp       | Тестови: IRC боје.
-|             test-irc-config.cpp      | Тестови: IRC конфигурација.
-|             test-irc-ctcp.cpp        | Тестови: IRC CTCP.
-|             test-irc-ignore.cpp      | Тестови: IRC игнорисања.
-|             test-irc-info.cpp        | Тестови: IRC информације.
-|             test-irc-join.cpp        | Тестови: IRC функције приступања.
-|             test-irc-list.cpp        | Тестови: IRC бафер за одговор на /list команду.
-|             test-irc-message.cpp     | Тестови: IRC поруке.
-|             test-irc-mode.cpp        | Тестови: IRC режими.
-|             test-irc-nick.cpp        | Тестови: IRC надимци.
-|             test-irc-protocol.cpp    | Тестови: IRC протокол.
-|             test-irc-sasl.cpp        | Тестови: SASL аутентификација са IRC протоколом.
-|             test-irc-server.cpp      | Тестови: IRC сервер.
-|             test-irc-tag.cpp         | Тестови: IRC ознаке порука.
-|          logger/                     | Корен unit тестива за logger додатак.
-|             test-logger.cpp          | Тестови: logger.
-|             test-logger-backlog.cpp  | Тестови: logger заостатак.
-|             test-logger-tail.cpp     | Тестови: logger tail фунцкије.
-|          trigger/                    | Корен unit тестова за окидач додатак.
-|             test-trigger.cpp         | Тестови: окидачи.
-|             test-trigger-config.cpp  | Тестови: конфигурација окидача.
-|          typing/                     | Корен unit тестова за typing додатак.
-|             test-typing.cpp          | Тестови: typing.
-|             test-typing-status.cpp   | Тестови: typing статус.
-|          relay/                      | Корен unit тестова за Релеј додатак.
-|             test-relay-auth.cpp      | Тестови: аутентификација клијената.
+| Путања/фајл                                | Опис
+| tests/                                     | Корен тестова.
+|    tests.cpp                               | Програм који се користи за извршавање свих тестова.
+|    tests-record.cpp                        | Бележење и претрага у приказаним порукама.
+|    scripts/                                | Корен тестова за API скриптовања.
+|       test-scripts.cpp                     | Програм који се користи за извршавање тестова API скриптовања.
+|       python/                              | Python скрипте које генеришу и покрећу тестове API скриптовања.
+|          testapigen.py                     | Python скрипта која генерише скрипте на свим језицима за тестирање API скриптовања.
+|          testapi.py                        | Python скрипта са тестовима API скриптовања, користи је скрипта testapigen.py.
+|          unparse.py                        | Конверзија Python кода у остале језике, користи је скрипта testapigen.py.
+|    unit/                                   | Корен unit тестова.
+|       test-plugins.cpp                     | Тестови: plugins.
+|       test-plugin-api-info.cpp             | Тестови: инфо функције API додатака.
+|       test-plugin-config.cpp               | Тестови: функције конфигурације додатка.
+|       core/                                | Корен unit тестова језгра.
+|          test-core-arraylist.cpp           | Тестови: arraylists.
+|          test-core-calc.cpp                | Тестови: калкулација израза.
+|          test-core-command.cpp             | Тестови: команде.
+|          test-core-config-file.cpp         | Тестови: конфигурациони фајлови.
+|          test-core-crypto.cpp              | Тестови: криптографске функције.
+|          test-core-dir.cpp                 | Тестови: функције директоријума/фајла.
+|          test-core-eval.cpp                | Тестови: израчунавање израза.
+|          test-core-hashtble.cpp            | Тестови: hashtables.
+|          test-core-hdata.cpp               | Тестови: hdata.
+|          test-core-hook.cpp                | Тестови: куке.
+|          test-core-infolist.cpp            | Тестови: infolists.
+|          test-core-list.cpp                | Тестови: листе.
+|          test-core-network.cpp             | Тестови: мрежне функције.
+|          test-core-secure.cpp              | Тестови: обезбеђени подаци.
+|          test-core-signal.cpp              | Тестови: сигнали.
+|          test-core-string.cpp              | Тестови: стрингови.
+|          test-core-url.cpp                 | Тестови: URL адресе.
+|          test-core-utf8.cpp                | Тестови: UTF-8.
+|          test-core-util.cpp                | Тестови: помоћне функције.
+|          test-core-sys.cpp                 | Тестови: системске функције.
+|          hook/                             | Корен unit тестова за куке.
+|             test-hook-command.cpp          | Тестови: куке „command”.
+|       gui/                                 | Корен unit тестова интерфејса.
+|          test-gui-bar-window.cpp           | Тестови: функције прозора траке.
+|          test-gui-buffer.cpp               | Тестови: бафер функције.
+|          test-gui-chat.cpp                 | Тестови: чет функције.
+|          test-gui-color.cpp                | Тестови: боје.
+|          test-gui-filter.cpp               | Тестови: филтери.
+|          test-gui-input.cpp                | Тестови: улазне функкције.
+|          test-gui-key.cpp                  | Тестови: тастери.
+|          test-gui-line.cpp                 | Тестови: линије.
+|          test-gui-nick.cpp                 | Тестови: надимци.
+|       plugins/                             | Корен unit тестова додатака.
+|          irc/                              | Корен unit тестова IRC додатка.
+|             test-irc-batch.cpp             | Тестови: IRC пакетни догађаји.
+|             test-irc-buffer.cpp            | Тестови: IRC бафери.
+|             test-irc-channel.cpp           | Тестови: IRC канали.
+|             test-irc-color.cpp             | Тестови: IRC боје.
+|             test-irc-config.cpp            | Тестови: IRC конфигурација.
+|             test-irc-ctcp.cpp              | Тестови: IRC CTCP.
+|             test-irc-ignore.cpp            | Тестови: IRC игнорисања.
+|             test-irc-info.cpp              | Тестови: IRC информације.
+|             test-irc-join.cpp              | Тестови: IRC функције приступања.
+|             test-irc-list.cpp              | Тестови: IRC бафер за одговор на /list команду.
+|             test-irc-message.cpp           | Тестови: IRC поруке.
+|             test-irc-mode.cpp              | Тестови: IRC режими.
+|             test-irc-nick.cpp              | Тестови: IRC надимци.
+|             test-irc-protocol.cpp          | Тестови: IRC протокол.
+|             test-irc-sasl.cpp              | Тестови: SASL аутентификација са IRC протоколом.
+|             test-irc-server.cpp            | Тестови: IRC сервер.
+|             test-irc-tag.cpp               | Тестови: IRC ознаке порука.
+|          logger/                           | Корен unit тестива за logger додатак.
+|             test-logger.cpp                | Тестови: logger.
+|             test-logger-backlog.cpp        | Тестови: logger заостатак.
+|             test-logger-tail.cpp           | Тестови: logger tail фунцкије.
+|          trigger/                          | Корен unit тестова за окидач додатак.
+|             test-trigger.cpp               | Тестови: окидачи.
+|             test-trigger-config.cpp        | Тестови: конфигурација окидача.
+|          typing/                           | Корен unit тестова за typing додатак.
+|             test-typing.cpp                | Тестови: typing.
+|             test-typing-status.cpp         | Тестови: typing статус.
+|          relay/                            | Корен unit тестова за Релеј додатак.
+|             test-relay-auth.cpp            | Тестови: аутентификација клијената.
 // TRANSLATION MISSING
-|             test-relay-http.cpp      | Tests: HTTP functions for Relay plugin.
+|             test-relay-http.cpp            | Tests: HTTP functions for Relay plugin.
 // TRANSLATION MISSING
-|             test-relay-websocket.cpp | Tests: websocket functions for Relay plugin.
-|             irc/                     | Корен unit тестова за Релеј „irc” протокол.
-|                test-relay-irc.cpp    | Тестови: РЕлеј „irc” протокол.
-|          xfer/                       | Корен unit тестова за Xfer додатак.
-|             test-xfer-file.cpp       | Тестови: фајл функције.
-|             test-xfer-network.cpp    | Тестови: мрежне функције.
+|             test-relay-websocket.cpp       | Tests: websocket functions for Relay plugin.
+|             api/                           | Root of unit tests for Relay "api" protocol.
+|                test-relay-api.cpp          | Tests: Relay "api" protocol: general functions.
+|                test-relay-api-msg.cpp      | Tests: Relay "api" protocol: messages.
+|                test-relay-api-protocol.cpp | Tests: Relay "api" protocol: protocol.
+|             irc/                           | Корен unit тестова за Релеј „irc” протокол.
+|                test-relay-irc.cpp          | Тестови: РЕлеј „irc” протокол.
+|          xfer/                             | Корен unit тестова за Xfer додатак.
+|             test-xfer-file.cpp             | Тестови: фајл функције.
+|             test-xfer-network.cpp          | Тестови: мрежне функције.
 |===
 
 [[documentation_translations]]
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 7a12de527..b9227cd01 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -111,6 +111,13 @@ if (ENABLE_RELAY)
     unit/plugins/relay/test-relay-websocket.cpp
     unit/plugins/relay/irc/test-relay-irc.cpp
   )
+  if (ENABLE_CJSON)
+    list(APPEND LIB_WEECHAT_UNIT_TESTS_PLUGINS_SRC
+      unit/plugins/relay/api/test-relay-api.cpp
+      unit/plugins/relay/api/test-relay-api-msg.cpp
+      unit/plugins/relay/api/test-relay-api-protocol.cpp
+    )
+  endif()
 endif()
 
 if(ENABLE_TRIGGER)
diff --git a/tests/unit/plugins/relay/api/test-relay-api-msg.cpp b/tests/unit/plugins/relay/api/test-relay-api-msg.cpp
new file mode 100644
index 000000000..546713ac1
--- /dev/null
+++ b/tests/unit/plugins/relay/api/test-relay-api-msg.cpp
@@ -0,0 +1,369 @@
+/*
+ * test-relay-api-msg.cpp - test relay API protocol (messages)
+ *
+ * Copyright (C) 2024 Sébastien Helleu <flashcode@flashtux.org>
+ *
+ * This file is part of WeeChat, the extensible chat client.
+ *
+ * WeeChat is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * WeeChat is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with WeeChat.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "CppUTest/TestHarness.h"
+
+extern "C"
+{
+#include <time.h>
+#include <sys/time.h>
+#include <cjson/cJSON.h>
+#include "src/core/wee-util.h"
+#include "src/gui/gui-buffer.h"
+#include "src/gui/gui-chat.h"
+#include "src/gui/gui-color.h"
+#include "src/gui/gui-line.h"
+#include "src/gui/gui-nicklist.h"
+#include "src/plugins/relay/relay.h"
+#include "src/plugins/relay/relay-client.h"
+#include "src/plugins/relay/api/relay-api.h"
+#include "src/plugins/relay/api/relay-api-msg.h"
+}
+
+#define WEE_CHECK_OBJ_STR(__expected, __json, __name)                   \
+    json_obj = cJSON_GetObjectItem (__json, __name);                    \
+    CHECK(json_obj);                                                    \
+    CHECK(cJSON_IsString (json_obj));                                   \
+    STRCMP_EQUAL(__expected, cJSON_GetStringValue (json_obj));
+
+#define WEE_CHECK_OBJ_STRN(__expected, __length, __json, __name)        \
+    json_obj = cJSON_GetObjectItem (__json, __name);                    \
+    CHECK(json_obj);                                                    \
+    CHECK(cJSON_IsString (json_obj));                                   \
+    STRNCMP_EQUAL(__expected, cJSON_GetStringValue (json_obj),          \
+                  __length);
+
+#define WEE_CHECK_OBJ_INT(__expected, __json, __name)                   \
+    json_obj = cJSON_GetObjectItem (__json, __name);                    \
+    CHECK(json_obj);                                                    \
+    CHECK(cJSON_IsNumber (json_obj));                                   \
+    LONGS_EQUAL(__expected, cJSON_GetNumberValue (json_obj));
+
+#define WEE_CHECK_OBJ_BOOL(__expected, __json, __name)                  \
+    json_obj = cJSON_GetObjectItem (__json, __name);                    \
+    CHECK(json_obj);                                                    \
+    CHECK(cJSON_IsBool (json_obj));                                     \
+    LONGS_EQUAL(__expected, cJSON_IsTrue (json_obj) ? 1 : 0);
+
+TEST_GROUP(RelayApiMsg)
+{
+};
+
+/*
+ * Tests functions:
+ *   relay_api_msg_send_json_internal
+ */
+
+TEST(RelayApiMsg, SendJsonInternal)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_msg_send_json
+ */
+
+TEST(RelayApiMsg, SendJson)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_msg_send_error_json
+ */
+
+TEST(RelayApiMsg, SendErrorJson)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_msg_send_event
+ */
+
+TEST(RelayApiMsg, SendEvent)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_msg_buffer_add_local_vars_cb
+ *   relay_api_msg_buffer_to_json
+ *   relay_api_msg_nick_to_json
+ *   relay_api_msg_nick_group_to_json
+ */
+
+TEST(RelayApiMsg, BufferToJson)
+{
+    cJSON *json, *json_obj, *json_local_vars, *json_lines;
+    cJSON *json_nicks, *json_groups, *json_group, *json_group_nicks, *json_nick;
+    struct t_gui_buffer *buffer;
+    struct t_gui_nick_group *group;
+
+    json = relay_api_msg_buffer_to_json (NULL, 0, 0, RELAY_API_COLORS_ANSI);
+    CHECK(json);
+    CHECK(cJSON_IsObject (json));
+    POINTERS_EQUAL(NULL, cJSON_GetObjectItem (json, "name"));
+    cJSON_Delete (json);
+
+    /* buffer without lines and nicks */
+    json = relay_api_msg_buffer_to_json (gui_buffers, 0, 0, RELAY_API_COLORS_ANSI);
+    CHECK(json);
+    CHECK(cJSON_IsObject (json));
+    WEE_CHECK_OBJ_STR("core.weechat", json, "name");
+    WEE_CHECK_OBJ_STR("weechat", json, "short_name");
+    WEE_CHECK_OBJ_INT(1, json, "number");
+    WEE_CHECK_OBJ_STR("formatted", json, "type");
+    WEE_CHECK_OBJ_STRN("WeeChat", 7, json, "title");
+    json_local_vars = cJSON_GetObjectItem (json, "local_variables");
+    CHECK(json_local_vars);
+    CHECK(cJSON_IsObject (json_local_vars));
+    WEE_CHECK_OBJ_STR("core", json_local_vars, "plugin");
+    WEE_CHECK_OBJ_STR("weechat", json_local_vars, "name");
+    POINTERS_EQUAL(NULL, cJSON_GetObjectItem (json, "lines"));
+    POINTERS_EQUAL(NULL, cJSON_GetObjectItem (json, "nicks"));
+    cJSON_Delete (json);
+
+    /* buffer with 2 lines, without nicks */
+    json = relay_api_msg_buffer_to_json (gui_buffers, 2, 0, RELAY_API_COLORS_ANSI);
+    CHECK(json);
+    CHECK(cJSON_IsObject (json));
+    json_lines = cJSON_GetObjectItem (json, "lines");
+    CHECK(json_lines);
+    CHECK(cJSON_IsArray (json_lines));
+    LONGS_EQUAL(2, cJSON_GetArraySize (json_lines));
+    cJSON_Delete (json);
+
+    /* create a user buffer with 1 group / 4 nicks */
+    buffer = gui_buffer_new_user ("test", GUI_BUFFER_TYPE_FORMATTED);
+    CHECK(buffer);
+    group = gui_nicklist_add_group (buffer, NULL, "group1", "magenta", 1);
+    CHECK(group);
+    CHECK(gui_nicklist_add_nick (buffer, group, "nick1", "blue", "@", "lightred", 1));
+    CHECK(gui_nicklist_add_nick (buffer, group, "nick2", "green", NULL, NULL, 1));
+    CHECK(gui_nicklist_add_nick (buffer, group, "nick3", "yellow", NULL, NULL, 1));
+    CHECK(gui_nicklist_add_nick (buffer, NULL, "root_nick_hidden", "cyan", "+", "yellow", 0));
+
+    /* buffer with no lines and 1 group / 4 nicks */
+    json = relay_api_msg_buffer_to_json (buffer, 1, 1, RELAY_API_COLORS_ANSI);
+    CHECK(json);
+    CHECK(cJSON_IsObject (json));
+    json_lines = cJSON_GetObjectItem (json, "lines");
+    CHECK(json_lines);
+    CHECK(cJSON_IsArray (json_lines));
+    LONGS_EQUAL(0, cJSON_GetArraySize (json_lines));
+    json_nicks = cJSON_GetObjectItem (json, "nicks");
+    CHECK(json_nicks);
+    CHECK(cJSON_IsObject (json_nicks));
+    WEE_CHECK_OBJ_STR("root", json_nicks, "name");
+    WEE_CHECK_OBJ_STR("", json_nicks, "color");
+    json_groups = cJSON_GetObjectItem (json_nicks, "groups");
+    CHECK(json_groups);
+    CHECK(cJSON_IsArray (json_groups));
+    LONGS_EQUAL(1, cJSON_GetArraySize (json_groups));
+    json_group = cJSON_GetArrayItem (json_groups, 0);
+    CHECK(json_group);
+    CHECK(cJSON_IsObject (json_group));
+    WEE_CHECK_OBJ_STR("group1", json_group, "name");
+    WEE_CHECK_OBJ_STR("magenta", json_group, "color");
+    json_group_nicks = cJSON_GetObjectItem (json_group, "nicks");
+    CHECK(json_group_nicks);
+    CHECK(cJSON_IsArray (json_group_nicks));
+    LONGS_EQUAL(3, cJSON_GetArraySize (json_group_nicks));
+    json_nick = cJSON_GetArrayItem (json_group_nicks, 0);
+    CHECK(json_nick);
+    CHECK(cJSON_IsObject (json_nick));
+    WEE_CHECK_OBJ_STR("@", json_nick, "prefix");
+    WEE_CHECK_OBJ_STR("lightred", json_nick, "prefix_color");
+    WEE_CHECK_OBJ_STR("nick1", json_nick, "name");
+    WEE_CHECK_OBJ_STR("blue", json_nick, "color");
+    WEE_CHECK_OBJ_BOOL(1, json_nick, "visible");
+    json_nick = cJSON_GetArrayItem (json_group_nicks, 1);
+    CHECK(json_nick);
+    CHECK(cJSON_IsObject (json_nick));
+    WEE_CHECK_OBJ_STR("", json_nick, "prefix");
+    WEE_CHECK_OBJ_STR("", json_nick, "prefix_color");
+    WEE_CHECK_OBJ_STR("nick2", json_nick, "name");
+    WEE_CHECK_OBJ_STR("green", json_nick, "color");
+    WEE_CHECK_OBJ_BOOL(1, json_nick, "visible");
+    json_nick = cJSON_GetArrayItem (json_group_nicks, 2);
+    CHECK(json_nick);
+    CHECK(cJSON_IsObject (json_nick));
+    WEE_CHECK_OBJ_STR("", json_nick, "prefix");
+    WEE_CHECK_OBJ_STR("", json_nick, "prefix_color");
+    WEE_CHECK_OBJ_STR("nick3", json_nick, "name");
+    WEE_CHECK_OBJ_STR("yellow", json_nick, "color");
+    WEE_CHECK_OBJ_BOOL(1, json_nick, "visible");
+    json_nicks = cJSON_GetObjectItem (json_nicks, "nicks");
+    CHECK(json_nicks);
+    CHECK(cJSON_IsArray (json_nicks));
+    LONGS_EQUAL(1, cJSON_GetArraySize (json_nicks));
+    json_nick = cJSON_GetArrayItem (json_nicks, 0);
+    CHECK(json_nick);
+    CHECK(cJSON_IsObject (json_nick));
+    WEE_CHECK_OBJ_STR("+", json_nick, "prefix");
+    WEE_CHECK_OBJ_STR("yellow", json_nick, "prefix_color");
+    WEE_CHECK_OBJ_STR("root_nick_hidden", json_nick, "name");
+    WEE_CHECK_OBJ_STR("cyan", json_nick, "color");
+    WEE_CHECK_OBJ_BOOL(0, json_nick, "visible");
+    cJSON_Delete (json);
+
+    gui_buffer_close (buffer);
+}
+
+/*
+ * Tests functions:
+ *   relay_api_msg_line_data_to_json
+ *   relay_api_msg_lines_to_json
+ */
+
+TEST(RelayApiMsg, LinesToJson)
+{
+    char str_msg1[1024], str_msg2[1024], *str_msg_ansi, str_date[128];
+    cJSON *json, *json_line, *json_obj, *json_tags, *json_tag;
+    struct timeval tv;
+    struct tm gm_time;
+
+    snprintf (str_msg1, sizeof (str_msg1), "%s", "this is the first line");
+    gui_chat_printf_date_tags (NULL, 0, "tag1,tag2,tag3",
+                               "%s\t%s", "nick1", str_msg1);
+
+    snprintf (str_msg2, sizeof (str_msg2),
+              "this is the second line with %s" "green",
+              gui_color_get_custom ("green"));
+    gui_chat_printf (NULL, "%s", str_msg2);
+
+    /* two lines with ANSI colors */
+    json = relay_api_msg_lines_to_json (gui_buffers, -2, RELAY_API_COLORS_ANSI);
+    CHECK(json);
+    CHECK(cJSON_IsArray (json));
+    LONGS_EQUAL(2, cJSON_GetArraySize (json));
+    /* first line */
+    json_line = cJSON_GetArrayItem (json, 0);
+    CHECK(json_line);
+    CHECK(cJSON_IsObject (json_line));
+    WEE_CHECK_OBJ_INT(gui_buffers->own_lines->last_line->prev_line->data->id,
+                      json_line, "id");
+    WEE_CHECK_OBJ_INT(-1, json_line, "y");
+    gmtime_r (&(gui_buffers->own_lines->last_line->prev_line->data->date), &gm_time);
+    tv.tv_sec = mktime (&gm_time);
+    tv.tv_usec = gui_buffers->own_lines->last_line->prev_line->data->date_usec;
+    util_strftimeval (str_date, sizeof (str_date), "%FT%T.%fZ", &tv);
+    WEE_CHECK_OBJ_STR(str_date, json_line, "date");
+    gmtime_r (&(gui_buffers->own_lines->last_line->prev_line->data->date_printed), &gm_time);
+    tv.tv_sec = mktime (&gm_time);
+    tv.tv_usec = gui_buffers->own_lines->last_line->prev_line->data->date_usec_printed;
+    util_strftimeval (str_date, sizeof (str_date), "%FT%T.%fZ", &tv);
+    WEE_CHECK_OBJ_STR(str_date, json_line, "date_printed");
+    WEE_CHECK_OBJ_BOOL(0, json_line, "highlight");
+    WEE_CHECK_OBJ_STR("nick1", json_line, "prefix");
+    WEE_CHECK_OBJ_STR(str_msg1, json_line, "message");
+    json_tags = cJSON_GetObjectItem (json_line, "tags");
+    CHECK(json_tags);
+    CHECK(cJSON_IsArray (json_tags));
+    LONGS_EQUAL(3, cJSON_GetArraySize (json_tags));
+    json_tag = cJSON_GetArrayItem (json_tags, 0);
+    CHECK(json_tag);
+    CHECK(cJSON_IsString (json_tag));
+    STRCMP_EQUAL("tag1", cJSON_GetStringValue (json_tag));
+    json_tag = cJSON_GetArrayItem (json_tags, 1);
+    CHECK(json_tag);
+    CHECK(cJSON_IsString (json_tag));
+    STRCMP_EQUAL("tag2", cJSON_GetStringValue (json_tag));
+    json_tag = cJSON_GetArrayItem (json_tags, 2);
+    CHECK(json_tag);
+    CHECK(cJSON_IsString (json_tag));
+    STRCMP_EQUAL("tag3", cJSON_GetStringValue (json_tag));
+    /* second line */
+    json_line = cJSON_GetArrayItem (json, 1);
+    CHECK(json_line);
+    CHECK(cJSON_IsObject (json_line));
+    WEE_CHECK_OBJ_INT(gui_buffers->own_lines->last_line->data->id,
+                      json_line, "id");
+    WEE_CHECK_OBJ_INT(-1, json_line, "y");
+    gmtime_r (&(gui_buffers->own_lines->last_line->data->date), &gm_time);
+    tv.tv_sec = mktime (&gm_time);
+    tv.tv_usec = gui_buffers->own_lines->last_line->data->date_usec;
+    util_strftimeval (str_date, sizeof (str_date), "%FT%T.%fZ", &tv);
+    WEE_CHECK_OBJ_STR(str_date, json_line, "date");
+    gmtime_r (&(gui_buffers->own_lines->last_line->data->date_printed), &gm_time);
+    tv.tv_sec = mktime (&gm_time);
+    tv.tv_usec = gui_buffers->own_lines->last_line->data->date_usec_printed;
+    util_strftimeval (str_date, sizeof (str_date), "%FT%T.%fZ", &tv);
+    WEE_CHECK_OBJ_STR(str_date, json_line, "date_printed");
+    WEE_CHECK_OBJ_BOOL(0, json_line, "highlight");
+    WEE_CHECK_OBJ_STR("", json_line, "prefix");
+        str_msg_ansi = gui_color_encode_ansi (str_msg2);
+    CHECK(str_msg_ansi);
+    WEE_CHECK_OBJ_STR(str_msg_ansi, json_line, "message");
+    free (str_msg_ansi);
+    json_tags = cJSON_GetObjectItem (json_line, "tags");
+    CHECK(json_tags);
+    CHECK(cJSON_IsArray (json_tags));
+    LONGS_EQUAL(0, cJSON_GetArraySize (json_tags));
+    cJSON_Delete (json);
+
+    /* with ANSI colors */
+    json = relay_api_msg_lines_to_json (gui_buffers, -1, RELAY_API_COLORS_ANSI);
+    CHECK(json);
+    CHECK(cJSON_IsArray (json));
+    LONGS_EQUAL(1, cJSON_GetArraySize (json));
+    json_line = cJSON_GetArrayItem (json, 0);
+    CHECK(json_line);
+    CHECK(cJSON_IsObject (json_line));
+    WEE_CHECK_OBJ_INT(gui_buffers->own_lines->last_line->data->id,
+                      json_line, "id");
+    str_msg_ansi = gui_color_encode_ansi (str_msg2);
+    CHECK(str_msg_ansi);
+    WEE_CHECK_OBJ_STR(str_msg_ansi, json_line, "message");
+    free (str_msg_ansi);
+    cJSON_Delete (json);
+
+    /* one line with WeeChat colors */
+    json = relay_api_msg_lines_to_json (gui_buffers, -1, RELAY_API_COLORS_WEECHAT);
+    CHECK(json);
+    CHECK(cJSON_IsArray (json));
+    LONGS_EQUAL(1, cJSON_GetArraySize (json));
+    json_line = cJSON_GetArrayItem (json, 0);
+    CHECK(json_line);
+    CHECK(cJSON_IsObject (json_line));
+    WEE_CHECK_OBJ_INT(gui_buffers->own_lines->last_line->data->id,
+                      json_line, "id");
+    WEE_CHECK_OBJ_STR(str_msg2, json_line, "message");
+    cJSON_Delete (json);
+
+    /* one line without colors */
+    json = relay_api_msg_lines_to_json (gui_buffers, -1, RELAY_API_COLORS_STRIP);
+    CHECK(json);
+    CHECK(cJSON_IsArray (json));
+    LONGS_EQUAL(1, cJSON_GetArraySize (json));
+    json_line = cJSON_GetArrayItem (json, 0);
+    CHECK(json_line);
+    CHECK(cJSON_IsObject (json_line));
+    WEE_CHECK_OBJ_INT(gui_buffers->own_lines->last_line->data->id,
+                      json_line, "id");
+    WEE_CHECK_OBJ_STR("this is the second line with green", json_line, "message");
+    cJSON_Delete (json);
+}
diff --git a/tests/unit/plugins/relay/api/test-relay-api-protocol.cpp b/tests/unit/plugins/relay/api/test-relay-api-protocol.cpp
new file mode 100644
index 000000000..9cd826713
--- /dev/null
+++ b/tests/unit/plugins/relay/api/test-relay-api-protocol.cpp
@@ -0,0 +1,142 @@
+/*
+ * test-relay-api-protocol.cpp - test relay API protocol (protocol)
+ *
+ * Copyright (C) 2024 Sébastien Helleu <flashcode@flashtux.org>
+ *
+ * This file is part of WeeChat, the extensible chat client.
+ *
+ * WeeChat is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * WeeChat is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with WeeChat.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "CppUTest/TestHarness.h"
+
+extern "C"
+{
+#include "src/plugins/relay/relay.h"
+#include "src/plugins/relay/api/relay-api-protocol.h"
+}
+
+TEST_GROUP(RelayApiProtocol)
+{
+};
+
+/*
+ * Tests functions:
+ *   relay_api_protocol_signal_buffer_cb
+ */
+
+TEST(RelayApiProtocol, SignalBufferCb)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_protocol_hsignal_nicklist_cb
+ */
+
+TEST(RelayApiProtocol, HsignalNicklistCb)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_protocol_signal_upgrade_cb
+ */
+
+TEST(RelayApiProtocol, SignalUpgradeCb)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_protocol_cb_handshake
+ */
+
+TEST(RelayApiProtocol, CbHandshake)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_protocol_cb_version
+ */
+
+TEST(RelayApiProtocol, CbVersion)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_protocol_cb_buffers
+ */
+
+TEST(RelayApiProtocol, CbBuffers)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_protocol_cb_input
+ */
+
+TEST(RelayApiProtocol, CbInput)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_protocol_cb_ping
+ */
+
+TEST(RelayApiProtocol, CbPing)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_protocol_cb_sync
+ */
+
+TEST(RelayApiProtocol, CbSync)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_protocol_recv_json
+ */
+
+TEST(RelayApiProtocol, RecvJson)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_protocol_recv_http
+ */
+
+TEST(RelayApiProtocol, RecvHttp)
+{
+    /* TODO: write tests */
+}
diff --git a/tests/unit/plugins/relay/api/test-relay-api.cpp b/tests/unit/plugins/relay/api/test-relay-api.cpp
new file mode 100644
index 000000000..08d1cb4bb
--- /dev/null
+++ b/tests/unit/plugins/relay/api/test-relay-api.cpp
@@ -0,0 +1,160 @@
+/*
+ * test-relay-api.cpp - test relay API protocol (general functions)
+ *
+ * Copyright (C) 2024 Sébastien Helleu <flashcode@flashtux.org>
+ *
+ * This file is part of WeeChat, the extensible chat client.
+ *
+ * WeeChat is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * WeeChat is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with WeeChat.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "CppUTest/TestHarness.h"
+
+extern "C"
+{
+#include "src/plugins/relay/relay.h"
+#include "src/plugins/relay/relay-client.h"
+#include "src/plugins/relay/api/relay-api.h"
+}
+
+TEST_GROUP(RelayApi)
+{
+};
+
+/*
+ * Tests functions:
+ *   relay_api_search_colors
+ */
+
+TEST(RelayApi, SearchColors)
+{
+    LONGS_EQUAL(RELAY_API_COLORS_ANSI, relay_api_search_colors (NULL));
+    LONGS_EQUAL(RELAY_API_COLORS_ANSI, relay_api_search_colors (""));
+    LONGS_EQUAL(RELAY_API_COLORS_ANSI, relay_api_search_colors ("xxx"));
+    LONGS_EQUAL(RELAY_API_COLORS_ANSI, relay_api_search_colors ("WEECHAT"));
+    LONGS_EQUAL(RELAY_API_COLORS_ANSI, relay_api_search_colors ("STRIP"));
+
+    LONGS_EQUAL(RELAY_API_COLORS_WEECHAT, relay_api_search_colors ("weechat"));
+    LONGS_EQUAL(RELAY_API_COLORS_STRIP, relay_api_search_colors ("strip"));
+}
+
+/*
+ * Tests functions:
+ *   relay_api_hook_signals
+ */
+
+TEST(RelayApi, HookSignals)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_unhook_signals
+ */
+
+TEST(RelayApi, UnhookSignals)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_recv_http
+ */
+
+TEST(RelayApi, RecvHttp)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_recv_json
+ */
+
+TEST(RelayApi, RecvJson)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_close_connection
+ */
+
+TEST(RelayApi, CloseConnection)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_alloc
+ */
+
+TEST(RelayApi, Alloc)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_alloc_with_infolist
+ */
+
+TEST(RelayApi, AllocWithInfolist)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_get_initial_status
+ */
+
+TEST(RelayApi, GetInitialStatus)
+{
+    LONGS_EQUAL(RELAY_STATUS_WAITING_AUTH, relay_api_get_initial_status (NULL));
+}
+
+/*
+ * Tests functions:
+ *   relay_api_free
+ */
+
+TEST(RelayApi, Free)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_add_to_infolist
+ */
+
+TEST(RelayApi, AddToInfolist)
+{
+    /* TODO: write tests */
+}
+
+/*
+ * Tests functions:
+ *   relay_api_print_log
+ */
+
+TEST(RelayApi, PrintLog)
+{
+    /* TODO: write tests */
+}
diff --git a/tests/unit/plugins/relay/irc/test-relay-irc.cpp b/tests/unit/plugins/relay/irc/test-relay-irc.cpp
index 57c6ee76e..62353ac79 100644
--- a/tests/unit/plugins/relay/irc/test-relay-irc.cpp
+++ b/tests/unit/plugins/relay/irc/test-relay-irc.cpp
@@ -1,5 +1,5 @@
 /*
- * test-relay-irc.cpp - test IRC protocol for relay to client
+ * test-relay-irc.cpp - test relay IRC protocol
  *
  * Copyright (C) 2023-2024 Sébastien Helleu <flashcode@flashtux.org>
  *