#!/bin/sh
puts() (IFS=" "; printf %s\\n "$*" ;)

cleanup () {
  rm -rf "$npm_config_prefix/lib" >/dev/null 2>&1
  unset npm_config_prefix

  rm -f npm
  PATH="$ORIGINAL_PATH"

  unset -f setup cleanup die
  unset message ORIGINAL_PATH
}

die () { puts "!! $@" ; cleanup ; exit 1; }

NVM_ENV=testing . ../../install.sh

setup () {
  ORIGINAL_PATH="$PATH"

  npm_config_prefix="$(pwd)"
  export npm_config_prefix
  mkdir -p "$npm_config_prefix/lib"
}

setup


npm install -g nop >/dev/null
message=$(nvm_check_global_modules)
[ ! -z "$message" ] || {
  puts '-- `npm --version`: '"$(npm --version)"
  puts '-- `npm list -g`:'
  npm list -g --depth=0
  puts '-- Printed message:'
  puts "'''$message'''"

  die "nvm_check_global_modules should have printed a notice when npm had global modules installed" ;}


npm uninstall -g nop >/dev/null
message=$(nvm_check_global_modules)
[ -z "$message" ] || {
  puts '-- `npm --version`: '"$(npm --version)"
  puts '-- `npm list -g`:'
  npm list -g --depth=0
  puts '-- Printed message:'
  puts "'''$message'''"

  die "nvm_check_global_modules should not have printed a notice when npm had no global modules installed" ;}


# Faking an installation of npm
mkdir -p "$npm_config_prefix/lib/node_modules/npm"
cat <<'JSON' >"$npm_config_prefix/lib/node_modules/npm/package.json"
{ "name": "npm", "version": "0.0.1fake" }
JSON

message=$(nvm_check_global_modules)
[ -z "$message" ] || {
  puts '-- `which npm`: '     "$(which npm)"
  puts '-- `npm --version`: ' "$(npm --version)"
  puts '-- `npm list -g`:'
  npm list -g --depth=0
  puts '-- Printed message:'
  puts "'''$message'''"

  die "nvm_check_global_modules should not have printed a notice when npm had only itself installed as a global module" ;}


# Faking the absence of npm
PATH=".:$PATH"
touch npm
chmod +x npm

message=$(nvm_check_global_modules)
[ -z "$message" ] || {
  puts '-- `which npm`: '     "$(which npm)"
  puts '-- `npm --version`: ' "$(npm --version)"
  puts '-- Printed message:'
  puts "'''$message'''"

  die "nvm_check_global_modules should not have printed a notice when npm was unavailable" ;}


cleanup