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51 lines
1.7 KiB
Haskell
51 lines
1.7 KiB
Haskell
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-- | Tests for stuff under Hasura.Eventing hierarchy
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module Hasura.EventingSpec (spec) where
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import Hasura.Eventing.ScheduledTrigger
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import Hasura.Prelude
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import Data.Time.Clock
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import System.Cron.Parser
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import Test.Hspec
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spec :: Spec
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spec = do
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scheduleTriggersSpec
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scheduleTriggersSpec :: Spec
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scheduleTriggersSpec = do
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-- https://hasura.io/docs/latest/graphql/core/scheduled-triggers/create-cron-trigger.html
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--
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-- FYI this is quite helpful for experimenting with cron expressions:
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-- https://crontab.guru/
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describe "cron" $ do
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it "calculates future events sanely" $ do
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cronTest "* * * * *"
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["2021-04-20 16:20:00 UTC",
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"2021-04-20 16:21:00 UTC",
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"2021-04-20 16:22:00 UTC"]
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cronTest "5 0 * 8 *" -- “At 00:05 in August.”
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["2021-08-01 00:05:00 UTC",
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"2021-08-02 00:05:00 UTC",
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"2021-08-03 00:05:00 UTC"]
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cronTest "15 14 1 * *" -- “At 14:15 on day-of-month 1.”
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["2021-05-01 14:15:00 UTC",
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"2021-06-01 14:15:00 UTC",
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"2021-07-01 14:15:00 UTC"]
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cronTest "0 22 * * 1-5" -- “At 22:00 on every day-of-week from Monday through Friday.”
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["2021-04-20 22:00:00 UTC",
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"2021-04-21 22:00:00 UTC",
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"2021-04-22 22:00:00 UTC"]
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where
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-- A few unit tests for schedule projection into the future, from an
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-- arbitrary time:
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now = read "2021-04-20 16:19:19.450 UTC" :: UTCTime -- Tuesday
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cronTest cronExpr expected = case parseCronSchedule cronExpr of
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Left e -> error $ "Fix test: " <> show e
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Right sched ->
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generateScheduleTimes now 3 sched
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`shouldBe` map read expected
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