Make tests pass

README.md

@@ -14,21 +14,25 @@ This guide is a literate Purescript file which is extracted into testing module
 Let's start with imports.
 
 ```purescript
-module Test.Example where
+module Test.README where
 
 import Prelude
 
-import Database.PostgreSQL (defaultPoolConfiguration, command, execute, newPool, query, Query(Query), withConnection, withTransaction)
+import Database.PostgreSQL (defaultPoolConfiguration, command, execute, newPool, PG, query, Query(Query), withConnection, withTransaction)
 import Database.PostgreSQL.Row (Row0(Row0), Row3(Row3))
 import Data.Decimal as Decimal
 import Data.Maybe (Maybe(..))
 import Data.Tuple.Nested ((/\))
-import Effect.Aff (Aff)
 import Effect.Class (liftEffect)
 import Test.Assert (assert)
 ```
 
-The whole API for interaction with postgres is performed asynchronously in `Aff`.
+The whole API for interaction with postgres is performed asynchronously in `Aff`. To be honest
+it is `type PG a = ExceptT PGError Aff a` so you can easily catch database related errors in
+a sane (read typed) manner. The only function which is done in plain `Effect` is `newPool`.
+
+Don't be scarred you can turn `PG a` into `Aff (Either PGError a)` just running single function
+`runExceptT`.
 
 We assume here that postgres is running on a standard local port
 with `ident` authentication so configuration can be nearly empty (`defaultPoolConfiguration`).
@@ -38,10 +42,10 @@ is run by our test suite and we want to exit after execution quickly ;-)
 
 
 ```purescript
-run ∷ Aff Unit
+run ∷ PG Unit
 run = do
 
-  pool <- newPool ((defaultPoolConfiguration "purspg") { idleTimeoutMillis = Just 1000 })
+  pool <- liftEffect $ newPool ((defaultPoolConfiguration "purspg") { idleTimeoutMillis = Just 1000 })
   withConnection pool \conn -> do
 ```
 

package.json

@@ -1,18 +1,15 @@
 {
   "name": "purescript-postgresql-client",
   "dependencies": {
-    "bower-dependency-tree": "^0.1.2",
     "decimal.js": "^10.0.0",
-    "g": "^2.0.1",
+    "pg": "^6.1.2"
-    "global": "^4.3.2",
-    "pg": "^6.1.2",
-    "pulp": "^12.3.0"
   },
   "devDependencies": {
-    "literate-purescript": "^0.1.2"
+    "paluh-litps": "^0.1.4",
+    "pulp": "^12.3.0"
   },
   "scripts": {
-    "pretest": "litps compile --file README.md; mv README.purs test/Example.purs",
+    "pretest": "paluh-litps compile --file README.md; mv README.purs test/README.purs",
     "test": "pulp test"
   }
 }

test/Main.purs

@@ -29,7 +29,7 @@ import Foreign.Object (Object, fromFoldable)
 import Math ((%))
 import Partial.Unsafe (unsafePartial)
 import Test.Assert (assert)
-import Test.Example (run) as Example
+import Test.README (run) as README
 import Test.Unit (TestSuite, suite)
 import Test.Unit as Test.Unit
 import Test.Unit.Assert (equal)
@@ -83,10 +83,10 @@ main ∷ Effect Unit
 main = do
   void $ launchAff do
     -- Running guide from README
-    -- Example.run
+    void $ runExceptT $ README.run
 
     -- Actual test suite
-    pool <- newPool config
+    pool <- liftEffect $ newPool config
     checkPGErrors $ withConnection pool \conn -> do
       execute conn (Query """
         CREATE TEMPORARY TABLE foods (
@@ -312,13 +312,13 @@ main = do
           let doNothing _ = pure unit
 
           Test.Unit.test "connection refused" do
-            testPool <- newPool cannotConnectConfig
+            testPool <- liftEffect $ newPool cannotConnectConfig
             runExceptT (withConnection testPool doNothing) >>= case _ of
               Left (ConnectionError cause) -> equal cause "ECONNREFUSED"
               _ -> Test.Unit.failure "foo"
 
           Test.Unit.test "no such database" do
-            testPool <- newPool noSuchDatabaseConfig
+            testPool <- liftEffect $ newPool noSuchDatabaseConfig
             runExceptT (withConnection testPool doNothing) >>= case _ of
               Left (ProgrammingError { code, message }) -> equal code "3D000"
               _ -> Test.Unit.failure "PostgreSQL error was expected"