chore: initial scaffolding of nag based on bash-boilerplate

test/nag.bats

@@ -0,0 +1,27 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "list with no alarms prints nothing-to-nag message" {
+  run_nag
+  [ "${status}" -eq 0 ]
+  [ "${output}" = "Nothing to nag about." ]
+}
+
+@test "help shows usage" {
+  run_nag help
+  [ "${status}" -eq 0 ]
+  [[ "${output}" =~ "<time> <message...>" ]]
+  [[ "${output}" =~ "every <rules> <time> <message...>" ]]
+  [[ "${output}" =~ "stop <id>" ]]
+  [[ "${output}" =~ "skip <id>" ]]
+  [[ "${output}" =~ "check" ]]
+  [[ "${output}" =~ "help [<subcommand>]" ]]
+  [[ "${output}" =~ "Options:" ]]
+}
+
+@test "version shows version" {
+  run_nag version
+  [ "${status}" -eq 0 ]
+  [[ "${output}" =~ ^[0-9]+\.[0-9]+(_[a-zA-Z0-9]+)*$ ]]
+}

test/test_helper.bash

@@ -0,0 +1,19 @@
+# test/test_helper.bash
+# Shared setup/teardown for nag tests.
+
+_NAG="$(cd "$(dirname "${BATS_TEST_FILENAME}")/.." && pwd)/nag"
+
+setup() {
+  export NAG_PATH
+  NAG_PATH="$(mktemp)"
+  rm -f "${NAG_PATH}"
+  export NAG_CMD="true"
+}
+
+teardown() {
+  rm -f "${NAG_PATH}" "${NAG_PATH}.lock"
+}
+
+run_nag() {
+  run "${_NAG}" --yes "$@"
+}