tests: add tests on GUI color functions

8 files changed, 600 insertions, 0 deletions

diff --git a/ChangeLog.adoc b/ChangeLog.adoc
index 0367b971f..521798eb3 100644
--- a/ChangeLog.adoc
+++ b/ChangeLog.adoc
@@ -32,6 +32,10 @@ Bug fixes::
   * buflist: fix extra spaces between buffers when conditions are used to hide buffers (regression introduced in version 2.6) (issue #1403)
   * irc: remove option irc.network.channel_encode, add server option "charset_message" to control which part of the IRC message is decoded/encoded to the target charset (issue #832)
 
+Tests::
+
+  * unit: add tests on GUI color functions
+
 Build::
 
   * core: fix build on Alpine
diff --git a/doc/en/weechat_dev.en.adoc b/doc/en/weechat_dev.en.adoc
index c3822c91a..742bd1435 100644
--- a/doc/en/weechat_dev.en.adoc
+++ b/doc/en/weechat_dev.en.adoc
@@ -403,6 +403,7 @@ WeeChat "core" is located in following directories:
 |          test-core-utf8.cpp       | Tests: UTF-8.
 |          test-core-util.cpp       | Tests: utility functions.
 |       gui/                        | Root of unit tests for interfaces.
+|          test-gui-color.cpp       | Tests: colors.
 |          test-gui-line.cpp        | Tests: lines.
 |          test-gui-nick.cpp        | Tests: nicks.
 |       plugins/                    | Root of unit tests for plugins.
diff --git a/doc/fr/weechat_dev.fr.adoc b/doc/fr/weechat_dev.fr.adoc
index 1dcaa69f8..78c647a70 100644
--- a/doc/fr/weechat_dev.fr.adoc
+++ b/doc/fr/weechat_dev.fr.adoc
@@ -405,6 +405,7 @@ Le cœur de WeeChat est situé dans les répertoires suivants :
 |          test-core-utf8.cpp       | Tests : UTF-8.
 |          test-core-util.cpp       | Tests : fonctions utiles.
 |       gui/                        | Racine des tests unitaires pour les interfaces.
+|          test-gui-color.cpp       | Tests : couleurs.
 |          test-gui-line.cpp        | Tests : lignes.
 |          test-gui-nick.cpp        | Tests : pseudos.
 |       plugins/                    | Racine des tests unitaires pour les extensions.
diff --git a/doc/ja/weechat_dev.ja.adoc b/doc/ja/weechat_dev.ja.adoc
index a4481915e..009633ce3 100644
--- a/doc/ja/weechat_dev.ja.adoc
+++ b/doc/ja/weechat_dev.ja.adoc
@@ -412,6 +412,8 @@ WeeChat "core" は以下のディレクトリに配置されています:
 |          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
 |       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-color.cpp       | Tests: colors.
 |          test-gui-line.cpp        | テスト: 行
 // TRANSLATION MISSING
 |          test-gui-nick.cpp        | テスト: nicks
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 25be90be7..fe1db3791 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -38,6 +38,7 @@ set(LIB_WEECHAT_UNIT_TESTS_CORE_SRC
   unit/core/test-core-url.cpp
   unit/core/test-core-utf8.cpp
   unit/core/test-core-util.cpp
+  unit/gui/test-gui-color.cpp
   unit/gui/test-gui-line.cpp
   unit/gui/test-gui-nick.cpp
   scripts/test-scripts.cpp
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 17641cecd..ebe710ac2 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -35,6 +35,7 @@ lib_weechat_unit_tests_core_a_SOURCES = unit/test-plugins.cpp \
                                         unit/core/test-core-url.cpp \
                                         unit/core/test-core-utf8.cpp \
                                         unit/core/test-core-util.cpp \
+                                        unit/gui/test-gui-color.cpp \
                                         unit/gui/test-gui-line.cpp \
                                         unit/gui/test-gui-nick.cpp \
                                         scripts/test-scripts.cpp
diff --git a/tests/tests.cpp b/tests/tests.cpp
index bf9902683..3aedebcb7 100644
--- a/tests/tests.cpp
+++ b/tests/tests.cpp
@@ -74,6 +74,7 @@ IMPORT_TEST_GROUP(CoreUrl);
 IMPORT_TEST_GROUP(CoreUtf8);
 IMPORT_TEST_GROUP(CoreUtil);
 /* GUI */
+IMPORT_TEST_GROUP(GuiColor);
 IMPORT_TEST_GROUP(GuiLine);
 IMPORT_TEST_GROUP(GuiNick);
 /* scripts */
diff --git a/tests/unit/gui/test-gui-color.cpp b/tests/unit/gui/test-gui-color.cpp
new file mode 100644
index 000000000..2790b9efa
--- /dev/null
+++ b/tests/unit/gui/test-gui-color.cpp
@@ -0,0 +1,589 @@
+/*
+ * test-gui-color.cpp - test color functions
+ *
+ * Copyright (C) 2019 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "CppUTest/TestHarness.h"
+
+extern "C"
+{
+#include "src/core/wee-string.h"
+#include "src/gui/gui-color.h"
+}
+
+#define WEE_CHECK_DECODE(__result, __string, __replacement)             \
+    decoded = gui_color_decode (__string, __replacement);               \
+    STRCMP_EQUAL(__result, decoded);                                    \
+    free (decoded);
+
+#define WEE_CHECK_DECODE_ANSI(__result, __string, __keep_colors)        \
+    decoded = gui_color_decode_ansi (__string, __keep_colors);          \
+    STRCMP_EQUAL(__result, decoded);                                    \
+    free (decoded);
+
+#define WEE_CHECK_EMPHASIZE(__result, __string, __search,               \
+                            __case_sensitive, __regex)                  \
+    emphasized = gui_color_emphasize (__string, __search,               \
+                                      __case_sensitive, __regex);       \
+    STRCMP_EQUAL(__result, emphasized);                                 \
+    free (emphasized);
+
+TEST_GROUP(GuiColor)
+{
+};
+
+/*
+ * Tests functions:
+ *   gui_color_get_custom
+ */
+
+TEST(GuiColor, ColorGetCustom)
+{
+    char string[32];
+
+    STRCMP_EQUAL("", gui_color_get_custom (NULL));
+    STRCMP_EQUAL("", gui_color_get_custom (""));
+
+    /* reset */
+    snprintf (string, sizeof (string), "%c", GUI_COLOR_RESET_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("reset"));
+
+    /* resetcolor */
+    snprintf (string, sizeof (string),
+              "%c%c",
+              GUI_COLOR_COLOR_CHAR,
+              GUI_COLOR_RESET_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("resetcolor"));
+
+    /* emphasis */
+    snprintf (string, sizeof (string),
+              "%c%c",
+              GUI_COLOR_COLOR_CHAR,
+              GUI_COLOR_EMPHASIS_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("emphasis"));
+
+    /* bold */
+    snprintf (string, sizeof (string),
+              "%c%c",
+              GUI_COLOR_SET_ATTR_CHAR,
+              GUI_COLOR_ATTR_BOLD_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("bold"));
+
+    /* -bold */
+    snprintf (string, sizeof (string),
+              "%c%c",
+              GUI_COLOR_REMOVE_ATTR_CHAR,
+              GUI_COLOR_ATTR_BOLD_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("-bold"));
+
+    /* reverse */
+    snprintf (string, sizeof (string),
+              "%c%c",
+              GUI_COLOR_SET_ATTR_CHAR,
+              GUI_COLOR_ATTR_REVERSE_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("reverse"));
+
+    /* -reverse */
+    snprintf (string, sizeof (string),
+              "%c%c",
+              GUI_COLOR_REMOVE_ATTR_CHAR,
+              GUI_COLOR_ATTR_REVERSE_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("-reverse"));
+
+    /* italic */
+    snprintf (string, sizeof (string),
+              "%c%c",
+              GUI_COLOR_SET_ATTR_CHAR,
+              GUI_COLOR_ATTR_ITALIC_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("italic"));
+
+    /* -italic */
+    snprintf (string, sizeof (string),
+              "%c%c",
+              GUI_COLOR_REMOVE_ATTR_CHAR,
+              GUI_COLOR_ATTR_ITALIC_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("-italic"));
+
+    /* underline */
+    snprintf (string, sizeof (string),
+              "%c%c",
+              GUI_COLOR_SET_ATTR_CHAR,
+              GUI_COLOR_ATTR_UNDERLINE_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("underline"));
+
+    /* -underline */
+    snprintf (string, sizeof (string),
+              "%c%c",
+              GUI_COLOR_REMOVE_ATTR_CHAR,
+              GUI_COLOR_ATTR_UNDERLINE_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("-underline"));
+
+    /* bar_fg */
+    snprintf (string, sizeof (string),
+              "%c%c%c",
+              GUI_COLOR_COLOR_CHAR,
+              GUI_COLOR_BAR_CHAR,
+              GUI_COLOR_BAR_FG_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("bar_fg"));
+
+    /* bar_delim */
+    snprintf (string, sizeof (string),
+              "%c%c%c",
+              GUI_COLOR_COLOR_CHAR,
+              GUI_COLOR_BAR_CHAR,
+              GUI_COLOR_BAR_DELIM_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("bar_delim"));
+
+    /* bar_bg */
+    snprintf (string, sizeof (string),
+              "%c%c%c",
+              GUI_COLOR_COLOR_CHAR,
+              GUI_COLOR_BAR_CHAR,
+              GUI_COLOR_BAR_BG_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("bar_bg"));
+
+    /* fg color */
+    snprintf (string, sizeof (string),
+              "%c%c09",
+              GUI_COLOR_COLOR_CHAR,
+              GUI_COLOR_FG_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("blue"));
+
+    /* bg color */
+    snprintf (string, sizeof (string),
+              "%c%c09",
+              GUI_COLOR_COLOR_CHAR,
+              GUI_COLOR_BG_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom (",blue"));
+    STRCMP_EQUAL(string, gui_color_get_custom (":blue"));
+
+    /* fg+bg color */
+    snprintf (string, sizeof (string),
+              "%c%c08~09",
+              GUI_COLOR_COLOR_CHAR,
+              GUI_COLOR_FG_BG_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("yellow,blue"));
+    STRCMP_EQUAL(string, gui_color_get_custom ("yellow:blue"));
+
+    /* fg terminal color */
+    snprintf (string, sizeof (string),
+              "%c%c%c00214",
+              GUI_COLOR_COLOR_CHAR,
+              GUI_COLOR_FG_CHAR,
+              GUI_COLOR_EXTENDED_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("214"));
+
+    /* bg terminal color */
+    snprintf (string, sizeof (string),
+              "%c%c%c00214",
+              GUI_COLOR_COLOR_CHAR,
+              GUI_COLOR_BG_CHAR,
+              GUI_COLOR_EXTENDED_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom (",214"));
+    STRCMP_EQUAL(string, gui_color_get_custom (":214"));
+
+    /* fg+bg terminal color */
+    snprintf (string, sizeof (string),
+              "%c%c%c00227~%c00240",
+              GUI_COLOR_COLOR_CHAR,
+              GUI_COLOR_FG_BG_CHAR,
+              GUI_COLOR_EXTENDED_CHAR,
+              GUI_COLOR_EXTENDED_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("227,240"));
+    STRCMP_EQUAL(string, gui_color_get_custom ("227:240"));
+
+    /* fg terminal color + bg color */
+    snprintf (string, sizeof (string),
+              "%c%c%c00227~09",
+              GUI_COLOR_COLOR_CHAR,
+              GUI_COLOR_FG_BG_CHAR,
+              GUI_COLOR_EXTENDED_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("227,blue"));
+    STRCMP_EQUAL(string, gui_color_get_custom ("227:blue"));
+
+    /* fg color with attributes + bg terminal color */
+    snprintf (string, sizeof (string),
+              "%c%c%c_/00227~09",
+              GUI_COLOR_COLOR_CHAR,
+              GUI_COLOR_FG_BG_CHAR,
+              GUI_COLOR_EXTENDED_CHAR);
+    STRCMP_EQUAL(string, gui_color_get_custom ("_/227,blue"));
+    STRCMP_EQUAL(string, gui_color_get_custom ("_/227:blue"));
+}
+
+/*
+ * Tests functions:
+ *   gui_color_decode
+ */
+
+TEST(GuiColor, ColorDecode)
+{
+    char string[256], *decoded;
+
+    /* NULL/empty string */
+    POINTERS_EQUAL(NULL, gui_color_decode (NULL, NULL));
+    POINTERS_EQUAL(NULL, gui_color_decode (NULL, ""));
+    POINTERS_EQUAL(NULL, gui_color_decode (NULL, "?"));
+    WEE_CHECK_DECODE("", "", NULL);
+    WEE_CHECK_DECODE("", "", "");
+    WEE_CHECK_DECODE("", "", "?");
+
+    /* no color codes */
+    WEE_CHECK_DECODE("test string", "test string", NULL);
+    WEE_CHECK_DECODE("test string", "test string", "");
+    WEE_CHECK_DECODE("test string", "test string", "?");
+
+    /* reset */
+    snprintf (string, sizeof (string),
+              "test_%sreset",
+              gui_color_get_custom ("reset"));
+    WEE_CHECK_DECODE("test_reset", string, NULL);
+    WEE_CHECK_DECODE("test_reset", string, "");
+    WEE_CHECK_DECODE("test_?reset", string, "?");
+
+    /* resetcolor */
+    snprintf (string, sizeof (string),
+              "test_%sresetcolor",
+              gui_color_get_custom ("resetcolor"));
+    WEE_CHECK_DECODE("test_resetcolor", string, NULL);
+    WEE_CHECK_DECODE("test_resetcolor", string, "");
+    WEE_CHECK_DECODE("test_?resetcolor", string, "?");
+
+    /* emphasis */
+    snprintf (string, sizeof (string),
+              "test_%semphasis",
+              gui_color_get_custom ("emphasis"));
+    WEE_CHECK_DECODE("test_emphasis", string, NULL);
+    WEE_CHECK_DECODE("test_emphasis", string, "");
+    WEE_CHECK_DECODE("test_?emphasis", string, "?");
+
+    /* bold */
+    snprintf (string, sizeof (string),
+              "test_%sbold%s_end",
+              gui_color_get_custom ("bold"),
+              gui_color_get_custom ("-bold"));
+    WEE_CHECK_DECODE("test_bold_end", string, NULL);
+    WEE_CHECK_DECODE("test_bold_end", string, "");
+    WEE_CHECK_DECODE("test_?bold?_end", string, "?");
+
+    /* reverse */
+    snprintf (string, sizeof (string),
+              "test_%sreverse%s_end",
+              gui_color_get_custom ("reverse"),
+              gui_color_get_custom ("-reverse"));
+    WEE_CHECK_DECODE("test_reverse_end", string, NULL);
+    WEE_CHECK_DECODE("test_reverse_end", string, "");
+    WEE_CHECK_DECODE("test_?reverse?_end", string, "?");
+
+    /* italic */
+    snprintf (string, sizeof (string),
+              "test_%sitalic%s_end",
+              gui_color_get_custom ("italic"),
+              gui_color_get_custom ("-italic"));
+    WEE_CHECK_DECODE("test_italic_end", string, NULL);
+    WEE_CHECK_DECODE("test_italic_end", string, "");
+    WEE_CHECK_DECODE("test_?italic?_end", string, "?");
+
+    /* underline */
+    snprintf (string, sizeof (string),
+              "test_%sunderline%s_end",
+              gui_color_get_custom ("underline"),
+              gui_color_get_custom ("-underline"));
+    WEE_CHECK_DECODE("test_underline_end", string, NULL);
+    WEE_CHECK_DECODE("test_underline_end", string, "");
+    WEE_CHECK_DECODE("test_?underline?_end", string, "?");
+
+    /* bar_fg */
+    snprintf (string, sizeof (string),
+              "test_%sbar_fg",
+              gui_color_get_custom ("bar_fg"));
+    WEE_CHECK_DECODE("test_bar_fg", string, NULL);
+    WEE_CHECK_DECODE("test_bar_fg", string, "");
+    WEE_CHECK_DECODE("test_?bar_fg", string, "?");
+
+    /* bar_delim */
+    snprintf (string, sizeof (string),
+              "test_%sbar_delim",
+              gui_color_get_custom ("bar_delim"));
+    WEE_CHECK_DECODE("test_bar_delim", string, NULL);
+    WEE_CHECK_DECODE("test_bar_delim", string, "");
+    WEE_CHECK_DECODE("test_?bar_delim", string, "?");
+
+    /* bar_bg */
+    snprintf (string, sizeof (string),
+              "test_%sbar_bg",
+              gui_color_get_custom ("bar_bg"));
+    WEE_CHECK_DECODE("test_bar_bg", string, NULL);
+    WEE_CHECK_DECODE("test_bar_bg", string, "");
+    WEE_CHECK_DECODE("test_?bar_bg", string, "?");
+
+    /* fg color */
+    snprintf (string, sizeof (string),
+              "test_%sblue",
+              gui_color_get_custom ("blue"));
+    WEE_CHECK_DECODE("test_blue", string, NULL);
+    WEE_CHECK_DECODE("test_blue", string, "");
+    WEE_CHECK_DECODE("test_?blue", string, "?");
+
+    /* bg color */
+    snprintf (string, sizeof (string),
+              "test_%sblue",
+              gui_color_get_custom (",blue"));
+    WEE_CHECK_DECODE("test_blue", string, NULL);
+    WEE_CHECK_DECODE("test_blue", string, "");
+    WEE_CHECK_DECODE("test_?blue", string, "?");
+
+    /* fg+bg color */
+    snprintf (string, sizeof (string),
+              "test_%syellow_blue",
+              gui_color_get_custom ("yellow,blue"));
+    WEE_CHECK_DECODE("test_yellow_blue", string, NULL);
+    WEE_CHECK_DECODE("test_yellow_blue", string, "");
+    WEE_CHECK_DECODE("test_?yellow_blue", string, "?");
+
+    /* fg terminal color */
+    snprintf (string, sizeof (string),
+              "test_%s214",
+              gui_color_get_custom ("214"));
+    WEE_CHECK_DECODE("test_214", string, NULL);
+    WEE_CHECK_DECODE("test_214", string, "");
+    WEE_CHECK_DECODE("test_?214", string, "?");
+
+    /* bg terminal color */
+    snprintf (string, sizeof (string),
+              "test_%s,214",
+              gui_color_get_custom (",214"));
+    WEE_CHECK_DECODE("test_,214", string, NULL);
+    WEE_CHECK_DECODE("test_,214", string, "");
+    WEE_CHECK_DECODE("test_?,214", string, "?");
+
+    /* fg+bg terminal color */
+    snprintf (string, sizeof (string),
+              "test_%s227,240",
+              gui_color_get_custom ("227,240"));
+    WEE_CHECK_DECODE("test_227,240", string, NULL);
+    WEE_CHECK_DECODE("test_227,240", string, "");
+    WEE_CHECK_DECODE("test_?227,240", string, "?");
+
+    /* fg terminal color + bg color */
+    snprintf (string, sizeof (string),
+              "test_%s227,blue",
+              gui_color_get_custom ("227,blue"));
+    WEE_CHECK_DECODE("test_227,blue", string, NULL);
+    WEE_CHECK_DECODE("test_227,blue", string, "");
+    WEE_CHECK_DECODE("test_?227,blue", string, "?");
+}
+
+/*
+ * Tests functions:
+ *   gui_color_decode_ansi
+ */
+
+TEST(GuiColor, ColorDecodeAnsi)
+{
+    char string[256], *decoded;
+
+    /* NULL/empty string */
+    POINTERS_EQUAL(NULL, gui_color_decode_ansi (NULL, 0));
+    POINTERS_EQUAL(NULL, gui_color_decode_ansi (NULL, 1));
+    WEE_CHECK_DECODE_ANSI("", "", 0);
+    WEE_CHECK_DECODE_ANSI("", "", 1);
+
+    /* no color codes */
+    WEE_CHECK_DECODE_ANSI("test string", "test string", 0);
+    WEE_CHECK_DECODE_ANSI("test string", "test string", 1);
+
+    /* invalid ANSI color */
+    WEE_CHECK_DECODE_ANSI("test_invalid", "test_\x1B[12zinvalid", 0);
+    WEE_CHECK_DECODE_ANSI("test_invalid", "test_\x1B[12zinvalid", 1);
+
+    /* reset */
+    WEE_CHECK_DECODE_ANSI("test_reset", "test_\x1B[mreset", 0);
+    snprintf (string, sizeof (string),
+              "test_%sreset", gui_color_get_custom ("reset"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[mreset", 1);
+
+    /* reset with 0 */
+    WEE_CHECK_DECODE_ANSI("test_reset", "test_\x1B[0mreset", 0);
+    snprintf (string, sizeof (string),
+              "test_%sreset", gui_color_get_custom ("reset"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[0mreset", 1);
+
+    /* bold */
+    WEE_CHECK_DECODE_ANSI("test_bold_end", "test_\x1B[1mbold\x1B[2m_end", 0);
+    WEE_CHECK_DECODE_ANSI("test_bold_end", "test_\x1B[1mbold\x1B[21m_end", 0);
+    WEE_CHECK_DECODE_ANSI("test_bold_end", "test_\x1B[1mbold\x1B[22m_end", 0);
+    snprintf (string, sizeof (string),
+              "test_%sbold%s_end",
+              gui_color_get_custom ("bold"),
+              gui_color_get_custom ("-bold"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[1mbold\x1B[2m_end", 1);
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[1mbold\x1B[21m_end", 1);
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[1mbold\x1B[22m_end", 1);
+
+    /* italic */
+    WEE_CHECK_DECODE_ANSI("test_italic_end",
+                          "test_\x1B[3mitalic\x1B[23m_end", 0);
+    snprintf (string, sizeof (string),
+              "test_%sitalic%s_end",
+              gui_color_get_custom ("italic"),
+              gui_color_get_custom ("-italic"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[3mitalic\x1B[23m_end", 1);
+
+    /* underline */
+    WEE_CHECK_DECODE_ANSI("test_underline_end",
+                          "test_\x1B[4munderline\x1B[24m_end", 0);
+    snprintf (string, sizeof (string),
+              "test_%sunderline%s_end",
+              gui_color_get_custom ("underline"),
+              gui_color_get_custom ("-underline"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[4munderline\x1B[24m_end", 1);
+
+    /* default text color */
+    WEE_CHECK_DECODE_ANSI("test_default", "test_\x1B[39mdefault", 0);
+    snprintf (string, sizeof (string),
+              "test_%sdefault",
+              gui_color_get_custom ("default"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[39mdefault", 1);
+
+    /* default text color */
+    WEE_CHECK_DECODE_ANSI("test_bg_default", "test_\x1B[49mbg_default", 0);
+    snprintf (string, sizeof (string),
+              "test_%sbg_default",
+              gui_color_get_custom (",default"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[49mbg_default", 1);
+
+    /* text color */
+    WEE_CHECK_DECODE_ANSI("test_blue", "test_\x1B[34mblue", 0);
+    snprintf (string, sizeof (string),
+              "test_%sblue",
+              gui_color_get_custom ("blue"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[34mblue", 1);
+
+    /* bright text color */
+    WEE_CHECK_DECODE_ANSI("test_lightgreen", "test_\x1B[92mlightgreen", 0);
+    snprintf (string, sizeof (string),
+              "test_%slightgreen",
+              gui_color_get_custom ("lightgreen"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[92mlightgreen", 1);
+
+    /* text terminal color */
+    WEE_CHECK_DECODE_ANSI("test_214", "test_\x1B[38;5;214m214", 0);
+    snprintf (string, sizeof (string),
+              "test_%s214",
+              gui_color_get_custom ("|214"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[38;5;214m214", 1);
+
+    /* text RGB color */
+    WEE_CHECK_DECODE_ANSI("test_13", "test_\x1B[38;2;255;0;255m13", 0);
+    snprintf (string, sizeof (string),
+              "test_%s13",
+              gui_color_get_custom ("|13"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[38;2;255;0;255m13", 1);
+
+    /* background color */
+    WEE_CHECK_DECODE_ANSI("test_bg_red", "test_\x1B[41mbg_red", 0);
+    snprintf (string, sizeof (string),
+              "test_%sbg_red",
+              gui_color_get_custom ("|,red"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[41mbg_red", 1);
+
+    /* bright background color */
+    WEE_CHECK_DECODE_ANSI("test_bg_lightgreen",
+                          "test_\x1B[102mbg_lightgreen", 0);
+    snprintf (string, sizeof (string),
+              "test_%sbg_lightgreen",
+              gui_color_get_custom ("|,lightgreen"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[102mbg_lightgreen", 1);
+
+    /* background terminal color */
+    WEE_CHECK_DECODE_ANSI("test_bg_240", "test_\x1B[48;5;214mbg_240", 0);
+    snprintf (string, sizeof (string),
+              "test_%sbg_240",
+              gui_color_get_custom ("|,240"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[48;5;240mbg_240", 1);
+
+    /* background RGB color */
+    WEE_CHECK_DECODE_ANSI("test_bg_13", "test_\x1B[48;2;255;0;255mbg_13", 0);
+    snprintf (string, sizeof (string),
+              "test_%sbg_13",
+              gui_color_get_custom ("|,13"));
+    WEE_CHECK_DECODE_ANSI(string, "test_\x1B[48;2;255;0;255mbg_13", 1);
+
+    /* text RGB + background RGB color */
+    WEE_CHECK_DECODE_ANSI(
+        "test_fg_13_bg_04",
+        "test_\x1B[38;2;255;0;255m\x1B[48;2;0;0;128mfg_13_bg_04",
+        0);
+    snprintf (string, sizeof (string),
+              "test_%s%sfg_13_bg_04",
+              gui_color_get_custom ("|13"),
+              gui_color_get_custom ("|,04"));
+    WEE_CHECK_DECODE_ANSI(
+        string,
+        "test_\x1B[38;2;255;0;255m\x1B[48;2;0;0;128mfg_13_bg_04",
+        1);
+}
+
+/*
+ * Tests functions:
+ *   gui_color_emphasize
+ */
+
+TEST(GuiColor, ColorEmphasize)
+{
+    char string1[256], string2[256], *emphasized;
+    regex_t regex;
+
+    /* NULL/empty string, search or regex */
+    POINTERS_EQUAL(NULL, gui_color_emphasize (NULL, NULL, 0, NULL));
+    POINTERS_EQUAL(NULL, gui_color_emphasize ("test", NULL, 0, NULL));
+    POINTERS_EQUAL(NULL, gui_color_emphasize (NULL, "test", 0, NULL));
+
+    /* build strings for tests */
+    snprintf (string1, sizeof (string1),
+              "%shello, %sthis is%s a test here!",
+              gui_color_get_custom (",blue"),
+              gui_color_get_custom ("bold"),
+              gui_color_get_custom ("bold"));
+    snprintf (string2, sizeof (string2),
+              "%shello, %s%sthis is%s a test%s here!",
+              gui_color_get_custom (",blue"),
+              gui_color_get_custom ("emphasis"),
+              gui_color_get_custom ("bold"),
+              gui_color_get_custom ("bold"),
+              gui_color_get_custom ("emphasis"));
+
+    /* search string (found) */
+    WEE_CHECK_EMPHASIZE(string2, string1, "this is a test", 0, NULL);
+    WEE_CHECK_EMPHASIZE(string2, string1, "this IS A TesT", 0, NULL);
+
+    /* search string (not found) */
+    WEE_CHECK_EMPHASIZE(string1, string1, "this IS A TesT", 1, NULL);
+
+    /* search regex (found) */
+    string_regcomp (&regex, "this.*test", 0);
+    WEE_CHECK_EMPHASIZE(string2, string1, NULL, 0, &regex);
+    regfree (&regex);
+
+    /* search regex (not found) */
+    string_regcomp (&regex, "this.*failed", 0);
+    WEE_CHECK_EMPHASIZE(string1, string1, NULL, 0, &regex);
+    regfree (&regex);
+}