Migrate tests to purescript-test-unit + Instant fetching + test

README.md

@@ -2,10 +2,18 @@
 
 purescript-postgresql-client is a PostgreSQL client library for PureScript.
 
+## Install
+
 To use this library, you need to add `pg` and `decimal.js` as an npm dependency. You can also
 find this npm library on [https://github.com/brianc/node-postgres][pg].
 
+## Preprocessing static SQL statements
+
 The purspgpp preprocessor has been replaced by [sqltopurs], which is a code
 generator instead of a preprocessor, and easier to use.
 
 [sqltopurs]: https://github.com/rightfold/sqltopurs
+
+## Testing
+
+To run test you have to prepare "purspg" database and use standard command: `pulp test`

bower.json

@@ -17,7 +17,8 @@
     "purescript-bifunctors": "^3.0.0",
     "purescript-eff": "^3.1.0",
     "purescript-exceptions": "^3.0.0",
-    "purescript-decimals": "^3.4.0"
+    "purescript-decimals": "^3.4.0",
+    "purescript-js-date": "^5.2.0"
   },
   "repository": {
     "type": "git",
@@ -25,6 +26,8 @@
   },
   "devDependencies": {
     "purescript-assert": "^3.0.0",
-    "purescript-eff": "^3.1.0"
+    "purescript-eff": "^3.1.0",
+    "purescript-debug": "^3.0.0",
+    "purescript-test-unit": "^13.0.0"
   }
 }

src/Database/PostgreSQL/Value.js

@@ -6,6 +6,18 @@ exports.instantToString = function(i) {
     return new Date(i).toUTCString();
 };
 
+exports.instantFromString = function(Left) {
+  return function(Right) {
+    return function(s) {
+      try {
+        return Right(Date.parse(s));
+      } catch(e) {
+        return Left("Date string parsing failed: \"" + s + "\", with: " + e);
+      }
+    };
+  };
+};
+
 exports.unsafeIsBuffer = function(x) {
     return x instanceof Buffer;
 };

src/Database/PostgreSQL/Value.purs

@@ -8,14 +8,15 @@ import Control.Monad.Except (runExcept)
 import Data.Array as Array
 import Data.Bifunctor (lmap)
 import Data.ByteString (ByteString)
-import Data.DateTime.Instant (Instant)
+import Data.DateTime.Instant (Instant, instant)
 import Data.Decimal (Decimal)
 import Data.Decimal as Decimal
-import Data.Either (Either, note)
+import Data.Either (Either(..), note)
 import Data.Foreign (Foreign, isNull, readArray, readBoolean, readChar, readInt, readNumber, readString, toForeign, unsafeFromForeign)
 import Data.List (List)
 import Data.List as List
 import Data.Maybe (Maybe(..))
+import Data.Time.Duration (Milliseconds(..))
 import Data.Traversable (traverse)
 
 -- | Convert things to SQL values.
@@ -79,6 +80,11 @@ instance fromSQLValueByteString :: FromSQLValue ByteString where
 instance toSQLValueInstant :: ToSQLValue Instant where
     toSQLValue = instantToString
 
+instance fromSQLValueInstant :: FromSQLValue Instant where
+    fromSQLValue v = do
+      t ← instantFromString Left Right v
+      note ("Instant construction failed for given timestamp: " <> show t) $ instant (Milliseconds t)
+
 instance toSQLValueMaybe :: (ToSQLValue a) => ToSQLValue (Maybe a) where
     toSQLValue Nothing = null
     toSQLValue (Just x) = toSQLValue x
@@ -103,4 +109,5 @@ instance fromSQLValueDecimal :: FromSQLValue Decimal where
 
 foreign import null :: Foreign
 foreign import instantToString :: Instant -> Foreign
+foreign import instantFromString :: (String → Either String Number) → (Number → Either String Number) → Foreign → Either String Number
 foreign import unsafeIsBuffer :: ∀ a. a -> Boolean

test/Main.purs

@@ -4,17 +4,53 @@ module Test.Main
 
 import Prelude
 
-import Control.Monad.Aff (launchAff)
+import Control.Monad.Aff (Aff, launchAff)
+import Control.Monad.Aff.AVar (AVAR)
+import Control.Monad.Aff.Console (CONSOLE)
 import Control.Monad.Eff (Eff)
 import Control.Monad.Eff.Class (liftEff)
 import Control.Monad.Eff.Exception (EXCEPTION, error)
-import Control.Monad.Error.Class (throwError, try)
+import Control.Monad.Eff.Now (NOW)
+import Control.Monad.Error.Class (catchError, throwError, try)
+import Data.DateTime.Instant (Instant, unInstant)
 import Data.Decimal as D
-import Data.Maybe (Maybe(..))
-import Database.PostgreSQL (POSTGRESQL, PoolConfiguration, Query(Query), Row0(Row0), Row1(Row1), Row2(Row2), Row3(Row3), Row9(Row9), execute, newPool, query, scalar, withConnection, withTransaction)
+import Data.Foldable (all)
+import Data.JSDate (toInstant)
+import Data.JSDate as JSDate
+import Data.Maybe (Maybe(..), fromJust)
+import Data.Newtype (unwrap)
+import Database.PostgreSQL (Connection, POSTGRESQL, PoolConfiguration, Query(Query), Row0(Row0), Row1(Row1), Row2(Row2), Row3(Row3), Row9(Row9), execute, newPool, query, scalar, withConnection, withTransaction)
+import Math ((%))
+import Partial.Unsafe (unsafePartial)
 import Test.Assert (ASSERT, assert)
+import Test.Unit (suite)
+import Test.Unit as Test.Unit
+import Test.Unit.Console (TESTOUTPUT)
+import Test.Unit.Main (runTest)
 
-main :: ∀ eff. Eff (assert :: ASSERT, exception :: EXCEPTION, postgreSQL :: POSTGRESQL | eff) Unit
+withRollback
+  :: ∀ eff
+   .  Connection
+  -> Aff (postgreSQL :: POSTGRESQL | eff) Unit
+  -> Aff (postgreSQL :: POSTGRESQL | eff) Unit
+withRollback conn action = do
+  execute conn (Query "BEGIN TRANSACTION") Row0
+  catchError (action >>= const rollback) (\e -> rollback >>= const (throwError e))
+  where
+  rollback = execute conn (Query "ROLLBACK") Row0
+
+test
+  :: ∀ eff
+   . Connection
+  -> String
+  -> Aff ( postgreSQL :: POSTGRESQL | eff) Unit
+  -> Test.Unit.TestSuite (postgreSQL :: POSTGRESQL | eff)
+test conn t a = Test.Unit.test t (withRollback conn a)
+
+now :: ∀ eff.  Eff (now :: NOW | eff) Instant
+now = unsafePartial $ (fromJust <<< toInstant) <$> JSDate.now
+
+main :: ∀ eff. Eff (assert :: ASSERT, avar :: AVAR, console :: CONSOLE, exception :: EXCEPTION, now :: NOW, postgreSQL :: POSTGRESQL, testOutput :: TESTOUTPUT | eff) Unit
 main = void $ launchAff do
   pool <- newPool config
   withConnection pool \conn -> do
@@ -23,10 +59,45 @@ main = void $ launchAff do
        name text NOT NULL,
        delicious boolean NOT NULL,
        price NUMERIC(4,2) NOT NULL,
+       added TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
        PRIMARY KEY (name)
      )
     """) Row0
 
+    liftEff $ runTest $ do
+      suite "Postgresql client" $ do
+        let
+          testCount n = do
+            count <- scalar conn (Query """
+              SELECT count(*) = $1
+              FROM foods
+            """) (Row1 n)
+            liftEff <<< assert $ count == Just true
+
+        Test.Unit.test "transaction commit" $ do
+          withTransaction conn do
+            execute conn (Query """
+              INSERT INTO foods (name, delicious, price)
+              VALUES ($1, $2, $3)
+            """) (Row3 "pork" true (D.fromString "8.30"))
+            testCount 1
+          testCount 1
+          execute conn (Query """
+            DELETE FROM foods
+          """) Row0
+
+        Test.Unit.test "transaction rollback" $ do
+          _ <- try $ withTransaction conn do
+            execute conn (Query """
+              INSERT INTO foods (name, delicious, price)
+              VALUES ($1, $2, $3)
+            """) (Row3 "pork" true (D.fromString "8.30"))
+            testCount 1
+            throwError $ error "fail"
+          testCount 0
+
+        let
+          insertFood =
             execute conn (Query """
               INSERT INTO foods (name, delicious, price)
               VALUES ($1, $2, $3), ($4, $5, $6), ($7, $8, $9)
@@ -34,61 +105,41 @@ main = void $ launchAff do
                 "pork" true (D.fromString "8.30")
                 "sauerkraut" false (D.fromString "3.30")
                 "rookworst" true (D.fromString "5.60"))
-
+        test conn "select column subset" $ do
+          insertFood
           names <- query conn (Query """
-      SELECT name
+            SELECT name, delicious
             FROM foods
             WHERE delicious
             ORDER BY name ASC
           """) Row0
+          liftEff <<< assert $ names == [Row2 "pork" true, Row2 "rookworst" true]
 
-    liftEff <<< assert $ names == [Row1 "pork", Row1 "rookworst"]
+        test conn "select default instant value" $ do
+          before <- liftEff $ (unwrap <<< unInstant) <$> now
+          insertFood
+          added <- query conn (Query """
+            SELECT added
+            FROM foods
+          """) Row0
+          after <- liftEff $ (unwrap <<< unInstant) <$> now
+          -- | timestamps are fetched without milliseconds so we have to
+          -- | round before value down
+          liftEff <<< assert $ all
+            (\(Row1 t) ->
+              ( unwrap $ unInstant t) >= (before - before % 1000.0)
+                && after >= (unwrap $ unInstant t))
+            added
 
-    sour <- query conn (Query """
-      SELECT name, price
+        test conn "select decimal" $ do
+          insertFood
+          sauerkrautPrice <- query conn (Query """
+            SELECT price
             FROM foods
             WHERE NOT delicious
-      ORDER BY name ASC
           """) Row0
-    liftEff <<< assert $ sour == [Row2 "sauerkraut" (D.fromString "3.30")]
+          liftEff <<< assert $ sauerkrautPrice == [Row1 (D.fromString "3.30")]
 
-    testTransactionCommit conn
-    testTransactionRollback conn
-
-    pure unit
-  where
-  testTransactionCommit conn = do
-    deleteAll conn
-    withTransaction conn do
-      execute conn (Query """
-        INSERT INTO foods (name, delicious, price)
-        VALUES ($1, $2, $3)
-      """) (Row3 "pork" true (D.fromString "8.30"))
-      testCount conn 1
-    testCount conn 1
-
-  testTransactionRollback conn = do
-    deleteAll conn
-    _ <- try $ withTransaction conn do
-      execute conn (Query """
-        INSERT INTO foods (name, delicious, price)
-        VALUES ($1, $2, $3)
-      """) (Row3 "pork" true (D.fromString "8.30"))
-      testCount conn 1
-      throwError $ error "fail"
-    testCount conn 0
-
-  deleteAll conn =
-    execute conn (Query """
-      DELETE FROM foods
-    """) Row0
-
-  testCount conn n = do
-    count <- scalar conn (Query """
-      SELECT count(*) = $1
-      FROM foods
-    """) (Row1 n)
-    liftEff <<< assert $ count == Just true
 
 config :: PoolConfiguration
 config =