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]+)*$ ]]
+}