Graham McIntire
e4668790a4
Mix.Task.run isn't available in a compiled release, so the in-prod `bin/microwaveprop eval 'Mix.Tasks.Weather.RebatchAsos.run(...)'` dispatch crashes. Moves the real logic into a plain module (`Microwaveprop.Weather.RebatchAsos`) that both the Mix task and a release eval can call. Uses IO.puts over Mix.shell for the same reason.
89 lines
3.2 KiB
Elixir
89 lines
3.2 KiB
Elixir
defmodule Mix.Tasks.Weather.RebatchAsosTest do
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use Microwaveprop.DataCase, async: false
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alias Microwaveprop.Weather.IemClient
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alias Microwaveprop.Weather.RebatchAsos
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alias Microwaveprop.Workers.WeatherFetchWorker
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setup do
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# Oban runs inline in tests, so the batch job the task inserts
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# actually executes. Stub IEM so that execution is a quiet no-op
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# (stations don't exist, so the batch handler just logs "missing"
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# and returns :ok).
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Req.Test.stub(IemClient, fn conn ->
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Req.Test.text(conn, "#DEBUG\nstation,valid,tmpf\n")
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end)
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:ok
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end
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# Oban runs `testing: :inline` in this project, so Oban.insert! would
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# execute the job immediately. We stash raw Oban.Job rows so we can
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# assert on the queue state the rebatch task would see in prod.
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defp insert_asos_job(station_id, station_code, start_dt, end_dt) do
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changeset =
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WeatherFetchWorker.new(%{
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"fetch_type" => "asos",
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"station_id" => station_id,
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"station_code" => station_code,
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"start_dt" => start_dt,
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"end_dt" => end_dt
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})
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# Force state=available so the task picks it up; Oban.Job defaults
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# to :available already but we set it explicitly for clarity.
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changeset
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|> Ecto.Changeset.put_change(:state, "available")
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|> Repo.insert!()
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end
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defp pending_count_by_type do
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import Ecto.Query
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from(j in Oban.Job,
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where: j.state in ["available", "scheduled", "retryable"],
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select: {fragment("?->>'fetch_type'", j.args), count(j.id)},
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group_by: fragment("?->>'fetch_type'", j.args)
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)
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|> Repo.all()
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|> Map.new()
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end
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test "collapses N single-station jobs sharing a window into one batch" do
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insert_asos_job(Ecto.UUID.generate(), "KDFW", "2026-03-28T16:00:00Z", "2026-03-28T20:00:00Z")
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insert_asos_job(Ecto.UUID.generate(), "KFTW", "2026-03-28T16:00:00Z", "2026-03-28T20:00:00Z")
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insert_asos_job(Ecto.UUID.generate(), "KAFW", "2026-03-28T16:00:00Z", "2026-03-28T20:00:00Z")
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output = ExUnit.CaptureIO.capture_io(fn -> RebatchAsos.run([]) end)
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assert output =~ "3 pending `asos` jobs across 1 time windows"
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assert output =~ "inserted 1 batch jobs"
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assert output =~ "cancelled 3 single-station jobs"
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end
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test "groups per (start_dt, end_dt) window" do
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insert_asos_job(Ecto.UUID.generate(), "KDFW", "2026-03-28T16:00:00Z", "2026-03-28T20:00:00Z")
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insert_asos_job(Ecto.UUID.generate(), "KFTW", "2026-03-28T16:00:00Z", "2026-03-28T20:00:00Z")
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insert_asos_job(Ecto.UUID.generate(), "KAUS", "2026-03-29T10:00:00Z", "2026-03-29T14:00:00Z")
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output = ExUnit.CaptureIO.capture_io(fn -> RebatchAsos.run([]) end)
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assert output =~ "3 pending `asos` jobs across 2 time windows"
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assert output =~ "inserted 2 batch jobs"
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end
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test "dry-run does not mutate the queue" do
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insert_asos_job(Ecto.UUID.generate(), "KDFW", "2026-03-28T16:00:00Z", "2026-03-28T20:00:00Z")
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ExUnit.CaptureIO.capture_io(fn -> RebatchAsos.run(dry_run: true) end)
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counts = pending_count_by_type()
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assert counts["asos"] == 1
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assert counts["asos_batch"] in [nil, 0]
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end
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test "no pending asos jobs — short-circuits" do
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output = ExUnit.CaptureIO.capture_io(fn -> RebatchAsos.run([]) end)
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assert output =~ "Nothing to do"
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end
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end
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