nvm/test/sourcing/Sourcing nvm.sh with --no-use should not use anything

#!/bin/sh

die () { echo "$@" ; exit 1; }
supports_source_options () {
  [ "_$(echo 'echo $1' | . /dev/stdin yes)" = "_yes" ]
}

if ! supports_source_options; then
  echo 'this shell does not support passing options on sourcing'
  exit 0;
fi

\. ../../nvm.sh
nvm install 4.1.0 || die 'install of v4.1.0 failed'
nvm_version 4.1.0 >/dev/null 2>&1 || die "v4.1.0 not installed: $(nvm ls)"
nvm deactivate || die 'nvm deactivate failed'

NVM_CURRENT="$(nvm current)"
[ "_$NVM_CURRENT" = '_none' ] || [ "_$NVM_CURRENT" = '_system' ] || die "'nvm current' did not return 'none' or 'system', got '$NVM_CURRENT' `nvm ls`"

nvm unload || die 'nvm unload failed'

\. ../../nvm.sh --no-use
EXIT_CODE="$(echo $?)"

echo 'sourcing complete.'

[ "_$EXIT_CODE" = "_0" ] || die "sourcing returned nonzero exit code: $EXIT_CODE"

NVM_CURRENT="$(nvm current)"
[ "_$NVM_CURRENT" = '_none' ] || [ "_$NVM_CURRENT" = '_system' ] || die "'nvm current' did not return 'none' or 'system', got '$NVM_CURRENT' `nvm ls`"