#!/bin/sh

die () { echo "$@"; exit 1; }
\. ../../../nvm.sh --no-use

nvm_ls() { printf '%s\n' "${VERSIONS}"; }
nvm_ls_remote() { printf '%s\n' "${VERSIONS}"; }

VERSIONS='v0.2.3
v0.3.4
v0.4.6
v0.5.7
v1.0.0
v1.1.0
v20.9.1
v20.9.2'
for MODE in local remote; do
  [ "$(nvm_print_implicit_alias "${MODE}" stable)" = '20.9' ] || die "${MODE} stable"
  [ "$(nvm_print_implicit_alias "${MODE}" unstable)" = '0.5' ] || die "${MODE} unstable"
done
VERSIONS='v0.1.0
v0.3.1'
[ -z "$(nvm_print_implicit_alias local stable)" ] || die 'odd-only stable'
[ "$(nvm_print_implicit_alias local unstable)" = '0.3' ] || die 'odd-only unstable'
VERSIONS='v0.2.0
v0.4.1'
[ "$(nvm_print_implicit_alias local stable)" = '0.4' ] || die 'even-only stable'
[ "$(nvm_print_implicit_alias local unstable)" = 'N/A' ] || die 'even-only unstable'
VERSIONS=''
[ -z "$(nvm_print_implicit_alias local stable)" ] || die 'empty stable'
[ "$(nvm_print_implicit_alias local unstable)" = 'N/A' ] || die 'empty unstable'

# Count actual awk launches, without timing-dependent assertions or provider calls.
COUNT_DIR=$(mktemp -d) || die 'temporary directory'
trap 'rm -f "${COUNT_DIR}/awk" "${COUNT_DIR}/calls"; rmdir "${COUNT_DIR}"' EXIT HUP INT TERM
REAL_AWK=$(command -v awk)
export REAL_AWK COUNT_DIR
printf '%s\n' '#!/bin/sh' 'echo called >> "${COUNT_DIR}/calls"' 'exec "${REAL_AWK}" "$@"' > "${COUNT_DIR}/awk"
chmod +x "${COUNT_DIR}/awk"
VERSIONS='v1.0.1
v1.1.1
v1.2.1
v1.3.1
v1.4.1
v1.5.1'
RESULT=$(PATH="${COUNT_DIR}:${PATH}" nvm_print_implicit_alias local stable)
[ "${RESULT}" = '1.5' ] || die 'latest minor classification'
CALLS=$(wc -l < "${COUNT_DIR}/calls")
[ "${CALLS}" -le 1 ] || die "classification launched ${CALLS} awk processes for six minors"

VERSIONS=''
: > "${COUNT_DIR}/calls"
RESULT=$(PATH="${COUNT_DIR}:${PATH}" nvm_print_implicit_alias local unstable)
[ "${RESULT}" = 'N/A' ] || die 'empty unstable classification'
CALLS=$(wc -l < "${COUNT_DIR}/calls")
[ "${CALLS}" -eq 0 ] || die "empty classification launched ${CALLS} awk processes"