Remove the versions directory when the last version is uninstalled

libexec/tfenv-uninstall

@@ -35,5 +35,6 @@ dst_path="${TFENV_ROOT}/versions/${version}"
 if [ -f "${dst_path}/terraform" ]; then 
   info "Uninstall Terraform v${version}"
   rm -r "${dst_path}"
+  rmdir "${TFENV_ROOT}/versions" 2> /dev/null
   info "\033[0;32mTerraform v${version} is successfully uninstalled\033[0;39m"
 fi

test/test_uninstall.sh

@@ -46,6 +46,18 @@ v="$(tfenv list-remote | grep 0.8 | head -n 1)"
   check_version "${v}" && exit 1 || exit 0
 ) || error_and_proceed "Uninstalling latest version "${v}" with Regex"
 
+echo "### Uninstall removes versions directory"
+cleanup || error_and_die "Cleanup failed?!"
+(
+  tfenv install 0.12.1 || exit 1
+  tfenv install 0.12.2 || exit 1
+  [ -d "./versions" ] || exit 1
+  tfenv uninstall 0.12.1 || exit 1
+  [ -d "./versions" ] || exit 1
+  tfenv uninstall 0.12.2 || exit 1
+  [ -d "./versions" ] && exit 1 || exit 0
+) || error_and_proceed "Removing last version deletes versions directory"
+
 if [ "${#errors[@]}" -gt 0 ]; then
   echo -e "\033[0;31m===== The following list tests failed =====\033[0;39m" >&2
   for error in "${errors[@]}"; do