#!/bin/sh

die () { echo "$@" ; exit 1; }

: nvm.sh
\. ../../../nvm.sh

# nvm_has_colors should be false in command substitution (stdout is not a terminal)
[ "$(nvm_has_colors; echo $?)" = "1" ] || die 'nvm_has_colors should be false in command substitution'

# nvm_has_colors should be false when stdout goes to /dev/null
! nvm_has_colors >/dev/null || die 'nvm_has_colors should be false when stdout goes to /dev/null'

# nvm_has_colors should be false when stdout goes to a pipe
(! nvm_has_colors || echo "boo!") | read && die 'nvm_has_colors should be false when stdout goes to a pipe'

# nvm_has_colors should be false when NVM_NO_COLORS is set, even if stdout is a terminal
if [ -t 1 ]; then
  ! NVM_NO_COLORS="--no-colors" nvm_has_colors || die 'nvm_has_colors should be false when NVM_NO_COLORS is set'
fi

# nvm_has_colors should be true when stdout is a terminal and colors are supported
if [ -t 1 ] && nvm_has tput && [ "$(command tput -T "${TERM:-vt100}" colors)" -ge 8 ]; then
  nvm_has_colors || die 'nvm_has_colors should be true when stdout is a terminal with color support'
fi

# nvm_has_colors should be true when redirected to /dev/tty (if available)
if (exec >/dev/tty) 2>/dev/null && nvm_has tput && [ "$(command tput -T "${TERM:-vt100}" colors)" -ge 8 ]; then
  nvm_has_colors >/dev/tty || die 'nvm_has_colors should be true when stdout goes to /dev/tty'
fi