From a03670ce18a0c4326eddd54d275c334f8ef259bc Mon Sep 17 00:00:00 2001
From: Julian Ospald <julian.ospald@iohk.io>
Date: Sat, 17 Oct 2020 16:27:58 +0200
Subject: [PATCH] Add DB test for last GC time

---
 .../src/Cardano/Wallet/DB/Sqlite/Types.hs     |  2 +-
 .../test/unit/Cardano/Pool/DB/Properties.hs   | 29 +++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/lib/core/src/Cardano/Wallet/DB/Sqlite/Types.hs b/lib/core/src/Cardano/Wallet/DB/Sqlite/Types.hs
index 6a0f4205fdb..dee5228bd86 100644
--- a/lib/core/src/Cardano/Wallet/DB/Sqlite/Types.hs
+++ b/lib/core/src/Cardano/Wallet/DB/Sqlite/Types.hs
@@ -673,7 +673,7 @@ instance PersistField POSIXTime where
             . formatTime defaultTimeLocale (iso8601DateFormat (Just "%H:%M:%S"))
             . posixSecondsToUTCTime
     fromPersistValue (PersistText time) =
-        fmap utcTimeToPOSIXSeconds $
+        utcTimeToPOSIXSeconds <$>
             parseTimeM True defaultTimeLocale
                 (iso8601DateFormat (Just "%H:%M:%S")) (T.unpack time)
     fromPersistValue _ = Left "Could not convert to unknown constructor POSIX seconds"
diff --git a/lib/core/test/unit/Cardano/Pool/DB/Properties.hs b/lib/core/test/unit/Cardano/Pool/DB/Properties.hs
index afb1312f380..2d6b82d06cf 100644
--- a/lib/core/test/unit/Cardano/Pool/DB/Properties.hs
+++ b/lib/core/test/unit/Cardano/Pool/DB/Properties.hs
@@ -6,7 +6,9 @@
 {-# LANGUAGE OverloadedLabels #-}
 {-# LANGUAGE RankNTypes #-}
 {-# LANGUAGE RecordWildCards #-}
+{-# LANGUAGE TypeApplications #-}
 {-# LANGUAGE TypeFamilies #-}
+{-# LANGUAGE TypeSynonymInstances #-}
 {-# OPTIONS_GHC -fno-warn-orphans #-}
 
 module Cardano.Pool.DB.Properties
@@ -87,6 +89,8 @@ import Data.Quantity
     ( Quantity (..) )
 import Data.Text.Class
     ( toText )
+import Data.Time.Clock.POSIX
+    ( POSIXTime )
 import Data.Word
     ( Word64 )
 import Fmt
@@ -217,6 +221,8 @@ properties = do
             (property . prop_putHeaderListHeader)
         it "modSettings . readSettings == id"
             (property . prop_modSettingsReadSettings)
+        it "putLastMetadataGC . readLastMetadataGC == id"
+            (property . prop_putLastMetadataGCReadLastMetadataGC)
 
 {-------------------------------------------------------------------------------
                                     Properties
@@ -1431,6 +1437,24 @@ prop_modSettingsReadSettings DBLayer{..} settings = do
         assertWith "Modifying settings and reading afterwards works"
             (modSettings' == settings)
 
+-- | read . put == pure
+prop_putLastMetadataGCReadLastMetadataGC
+    :: DBLayer IO
+    -> POSIXTime
+    -> Property
+prop_putLastMetadataGCReadLastMetadataGC DBLayer{..} posixTime = do
+    monadicIO (setup >> prop)
+  where
+    setup = run $ atomically cleanDB
+    prop = do
+        defGCTime <- run $ atomically readLastMetadataGC
+        assertWith "Reading sync time from empty db returns start of unix epoch"
+            (defGCTime == fromIntegral @Int 0)
+        run $ atomically $ putLastMetadataGC posixTime
+        time <- run $ atomically readLastMetadataGC
+        assertWith "Setting sync time and reading afterwards works"
+            (time == posixTime)
+
 descSlotsPerPool :: Map PoolId [BlockHeader] -> Expectation
 descSlotsPerPool pools = do
     let checkIfDesc slots =
@@ -1484,3 +1508,8 @@ testCertificatePublicationTimes =
 
 instance Arbitrary BlockHeader where
     arbitrary = genSlotNo >>= genBlockHeader
+
+instance Arbitrary POSIXTime where
+    arbitrary = do
+        (Positive int) <- arbitrary @(Positive Int)
+        pure (fromIntegral int)