Graham McIntire
43c6b3598e
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76 lines
2 KiB
Elixir
76 lines
2 KiB
Elixir
defmodule Microwaveprop.DataCase do
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@moduledoc """
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Test case template for tests that need database access.
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"""
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use ExUnit.CaseTemplate
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alias Ecto.Adapters.SQL.Sandbox
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alias Microwaveprop.Propagation.ScoreCache
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alias Microwaveprop.Weather.GridCache
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using do
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quote do
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import Ecto
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import Ecto.Changeset
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import Ecto.Query
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import Microwaveprop.DataCase
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alias Microwaveprop.Repo
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end
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end
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setup tags do
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_owner = Microwaveprop.DataCase.setup_sandbox(tags)
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Microwaveprop.DataCase.reset_test_state()
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Req.Test.set_req_test_from_context(tags)
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:ok
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end
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@doc """
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Reset state that persists across tests within a single ExUnit run.
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The sandbox isolates the database, but ETS-backed caches
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(GridCache, ScoreCache) and on-disk score files survive across
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test boundaries because the cache GenServers and filesystem live
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in the app's BEAM process tree, not per-test. A single reset
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here avoids per-file setup duplication.
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"""
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@spec reset_test_state :: :ok
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def reset_test_state do
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dir = Application.get_env(:microwaveprop, :propagation_scores_dir)
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if is_binary(dir), do: File.rm_rf(dir)
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GridCache.clear()
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ScoreCache.clear()
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Req.Test.stub(Microwaveprop.Weather.NexradClient, fn conn ->
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Plug.Conn.send_resp(conn, 404, "not found")
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end)
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Req.Test.stub(Microwaveprop.Weather.HrrrClient, fn conn ->
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Plug.Conn.send_resp(conn, 404, "not found")
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end)
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:ok
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end
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@spec setup_sandbox(map()) :: pid()
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def setup_sandbox(tags) do
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shared? = not tags[:async]
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pid = Sandbox.start_owner!(Microwaveprop.Repo, shared: shared?)
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on_exit(fn -> Sandbox.stop_owner(pid) end)
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pid
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end
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@spec errors_on(Ecto.Changeset.t()) :: map()
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def errors_on(changeset) do
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Ecto.Changeset.traverse_errors(changeset, fn {message, opts} ->
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Regex.replace(~r"%{(\w+)}", message, fn _, key ->
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opts |> Keyword.get(String.to_existing_atom(key), key) |> to_string()
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end)
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end)
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end
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end
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