nvm/test/fast/Unit tests/nvm_alias LTS-N

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#!/bin/sh
die () { echo "$@" ; cleanup ; exit 1; }
cleanup() {
unset -f nvm_download
rm -rf "${NVM_DIR}/alias/lts"
mv "${NVM_DIR}/alias/lts-backup" "${NVM_DIR}/alias/lts"
}
\. ../../../nvm.sh
MOCKS_DIR="${PWD}/mocks"
LTS_NAMES_PATH="${MOCKS_DIR}/LTS_names.txt"
LTS_LIST="$(cat "${LTS_NAMES_PATH}" | tail -n +2)"
mv "${NVM_DIR}/alias/lts" "${NVM_DIR}/alias/lts-backup" ||:
mkdir -p "${NVM_DIR}/alias/lts"
for LTS in $LTS_LIST; do
cp "${NVM_DIR}/alias/lts-backup/${LTS}" "${NVM_DIR}/alias/lts/"
done
set -ex
# sample output at the time the test was written
TAB_PATH="${MOCKS_DIR}/nodejs.org-dist-index.tab"
nvm_download() {
cat "${TAB_PATH}"
}
nvm_ls_remote >/dev/null || die "nvm_ls_remote_failed?!"
N=0
while IFS= read -r LTS; do
if [ $N -gt 0 ]; then
EXPECTED="$(nvm_alias "lts/${LTS}")"
ACTUAL="$(nvm_alias "lts/-${N}")"
[ "${EXPECTED}" = "${ACTUAL}" ] || die "\`nvm_alias lts/-${N}\` was \`${ACTUAL}\`; expected \`${EXPECTED}\`"
fi
N=$(($N+1))
done < "${LTS_NAMES_PATH}"
cleanup