Use the tput values instead of raw ansi control sequences for tests, …

…in case the travis terminal does not support some features

tests/test_tint_functions

@@ -6,34 +6,30 @@ source $SCRIPT_DIR/../src/tint
 ESC=''
 RESET="${ESC}(B${ESC}[m"
 
-BOLD="1"
-DIM="2"
-UNDERLINE="4"
-BLINK="5"
-INVERT="7"
-HIDDEN="8"
-
-BLACK="30"
-RED="31"
-GREEN="32"
-YELLOW="33"
-BLUE="34"
-MAGENTA="35"
-CYAN="36"
-LIGHT_GRAY="37"
-WHITE="97"
-
-BLACK_BG="40"
-RED_BG="41"
-GREEN_BG="42"
-YELLOW_BG="43"
-BLUE_BG="44"
-MAGENTA_BG="45"
-CYAN_BG="46"
-LIGHT_GRAY_BG="47"
-RESET_BG="49"
-GRAY_BG="100"
-WHITE_BG="107"
+BOLD="$(tput bold)"
+DIM="$(tput dim)"
+UNDERLINE="$(tput smul)"
+BLINK="$(tput blink)"
+INVERT="$(tput rev)"
+HIDDEN="$(tput invis)"
+
+BLACK="$(tput setaf 0)"
+RED="$(tput setaf 1)"
+GREEN="$(tput setaf 2)"
+YELLOW="$(tput setaf 3)"
+BLUE="$(tput setaf 4)"
+MAGENTA="$(tput setaf 5)"
+CYAN="$(tput setaf 6)"
+WHITE="$(tput setaf 7)"
+
+BLACK_BG="$(tput setab 0)"
+RED_BG="$(tput setab 1)"
+GREEN_BG="$(tput setab 2)"
+YELLOW_BG="$(tput setab 3)"
+BLUE_BG="$(tput setab 4)"
+MAGENTA_BG="$(tput setab 5)"
+CYAN_BG="$(tput setab 6)"
+WHITE_BG="$(tput setab 7)"
 
 control_sequence() {
     while test $# -gt 0