test: splits monolith into a bats file for each subcommand

test/at.bats

@@ -0,0 +1,81 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "at creates a one-shot alarm" {
+  run_nag at "tomorrow 3pm" "take a break"
+  [ "${status}" -eq 0 ]
+  [[ "${output}" =~ "[1] Tomorrow, 3pm — take a break" ]]
+  [ -f "${NAG_DIR}/alarms" ]
+  [ "$(wc -l < "${NAG_DIR}/alarms")" -eq 1 ]
+  # Verify TSV structure: id<TAB>timestamp<TAB><TAB>message
+  local _line
+  _line="$(cat "${NAG_DIR}/alarms")"
+  [[ "${_line}" =~ ^1$'\t'[0-9]+$'\t'$'\t'take\ a\ break$ ]]
+}
+
+@test "at is the implicit subcommand" {
+  run_nag "tomorrow 3pm" "take a break"
+  [ "${status}" -eq 0 ]
+  [[ "${output}" =~ "[1]" ]]
+  [[ "${output}" =~ "take a break" ]]
+}
+
+@test "at with invalid time fails" {
+  run_nag at "notavalidtime" "some message"
+  [ "${status}" -eq 1 ]
+}
+
+@test "at rejects yesterday" {
+  run_nag at "yesterday 3pm" "too late"
+  [ "${status}" -eq 1 ]
+  [[ "${output}" =~ "past" ]]
+}
+
+@test "at rejects ago" {
+  run_nag at "2 hours ago" "too late"
+  [ "${status}" -eq 1 ]
+  [[ "${output}" =~ "past" ]]
+}
+
+@test "at rejects last" {
+  run_nag at "last friday" "too late"
+  [ "${status}" -eq 1 ]
+  [[ "${output}" =~ "past" ]]
+}
+
+@test "invalid time with ago says invalid, not past" {
+  run_nag at "sdjkfhskdjfh ago" "nope"
+  [ "${status}" -eq 1 ]
+  [[ "${output}" =~ "Invalid time" ]]
+}
+
+@test "invalid time with yesterday says invalid, not past" {
+  run_nag at "sdjkfh yesterday blah" "nope"
+  [ "${status}" -eq 1 ]
+  [[ "${output}" =~ "Invalid time" ]]
+}
+
+@test "invalid time with last says invalid, not past" {
+  run_nag at "last sdjkfh" "nope"
+  [ "${status}" -eq 1 ]
+  [[ "${output}" =~ "Invalid time" ]]
+}
+
+@test "at rolls past date forward to next year" {
+  local _last_month
+  _last_month="$(date -d "last month" "+%B %-d")"
+  run_nag at "${_last_month}" "annual thing"
+  [ "${status}" -eq 0 ]
+  local _ts
+  _ts="$(cut -f2 "${NAG_DIR}/alarms")"
+  local _ts_year _next_year
+  _ts_year="$(date -d "@${_ts}" +%Y)"
+  _next_year="$(date -d "+1 year" +%Y)"
+  [ "${_ts_year}" = "${_next_year}" ]
+}
+
+@test "at without message fails" {
+  run_nag at "tomorrow 3pm"
+  [ "${status}" -eq 1 ]
+}