#!/bin/sh

set -e

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

export NVM_DIR="$(cd ../.. && pwd)"

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

\. ../common.sh

HELP="$(nvm --help 2>&1)"

# Signatures for use/exec/run advertise `current` (mirroring `nvm which`).
for EXPECTED in \
  'nvm use [current | <version>]' \
  'nvm exec [current | <version>] [<command>]' \
  'nvm run [current | <version>] [<args>]' \
  'nvm which [current | <version>]' \
; do
  case "${HELP}" in
    *"${EXPECTED}"*) ;;
    *) die "nvm --help did not contain signature >${EXPECTED}<" ;;
  esac
done

# The .nvmrc fallback is documented as conditional, not free.
case "${HELP}" in
  *'Uses .nvmrc if version is omitted; otherwise errors.'*) ;;
  *) die "nvm --help did not document the .nvmrc fallback caveat" ;;
esac

# The stale, looser phrasing must be gone.
case "${HELP}" in
  *'if available and version is omitted'*) die "nvm --help still contains the old .nvmrc phrasing" ;;
esac

# `nvm current` is documented as resolving via \$PATH, not .nvmrc.
case "${HELP}" in
  *'Display the active node version (resolved via $PATH; not affected by .nvmrc).'*) ;;
  *) die "nvm --help did not document that 'nvm current' resolves via \$PATH" ;;
esac