Add post example (#41)

docs/Examples/Post/Example.md

@@ -0,0 +1,10 @@
+# Post Example
+
+This is a basic example of handling a Post. It will respond to a HTTP POST on
+any path with the post body in the response body.
+
+To run the example server, run:
+
+```bash
+make example EXAMPLE=Post
+```

docs/Examples/Post/Main.purs

@@ -0,0 +1,31 @@
+module Post where
+
+import Prelude
+
+import Control.Monad.Eff.Console as Console
+import Data.StrMap as StrMap
+import HTTPure as HTTPure
+
+-- | Serve the example server on this port
+port :: Int
+port = 8084
+
+-- | Shortcut for `show port`
+portS :: String
+portS = show port
+
+-- | Route to the correct handler
+router :: forall e. HTTPure.Request -> HTTPure.ResponseM e
+router (HTTPure.Post _ _ body) = pure $ HTTPure.OK StrMap.empty body
+router _                       = pure $ HTTPure.OK StrMap.empty ""
+
+-- | Boot up the server
+main :: forall e. HTTPure.ServerM (console :: Console.CONSOLE | e)
+main = HTTPure.serve port router do
+  Console.log $ " ┌───────────────────────────────────────────┐"
+  Console.log $ " │ Server now up on port " <> portS <> "                │"
+  Console.log $ " │                                           │"
+  Console.log $ " │ To test, run:                             │"
+  Console.log $ " │  > curl -XPOST --data test localhost:" <> portS <> " │"
+  Console.log $ " │    # => test                              │"
+  Console.log $ " └───────────────────────────────────────────┘"

test/HTTPure/IntegrationSpec.purs

@@ -3,37 +3,48 @@ module HTTPure.IntegrationSpec where
 import Prelude
 
 import Control.Monad.Eff.Class as EffClass
+import Data.StrMap as StrMap
 import Test.Spec as Spec
 import Test.Spec.Assertions as Assertions
 
 import HTTPure.SpecHelpers as SpecHelpers
 
+import Headers as Headers
 import HelloWorld as HelloWorld
 import MultiRoute as MultiRoute
-import Headers as Headers
+import Post as Post
+
+headersSpec :: SpecHelpers.Test
+headersSpec = Spec.it "runs the headers example" do
+  EffClass.liftEff Headers.main
+  header <- SpecHelpers.getHeader 8082 StrMap.empty "/" "X-Example"
+  header `Assertions.shouldEqual` "hello world!"
+  response <- SpecHelpers.get 8082 (StrMap.singleton "X-Input" "test") "/"
+  response `Assertions.shouldEqual` "test"
 
 helloWorldSpec :: SpecHelpers.Test
 helloWorldSpec = Spec.it "runs the hello world example" do
   EffClass.liftEff HelloWorld.main
-  response <- SpecHelpers.get "http://localhost:8080"
+  response <- SpecHelpers.get 8080 StrMap.empty "/"
   response `Assertions.shouldEqual` "hello world!"
 
 multiRouteSpec :: SpecHelpers.Test
 multiRouteSpec = Spec.it "runs the multi route example" do
   EffClass.liftEff MultiRoute.main
-  hello <- SpecHelpers.get "http://localhost:8081/hello"
+  hello <- SpecHelpers.get 8081 StrMap.empty "/hello"
   hello `Assertions.shouldEqual` "hello"
-  goodbye <- SpecHelpers.get "http://localhost:8081/goodbye"
+  goodbye <- SpecHelpers.get 8081 StrMap.empty "/goodbye"
   goodbye `Assertions.shouldEqual` "goodbye"
 
-headersSpec :: SpecHelpers.Test
-headersSpec = Spec.it "runs the headers example" do
-  EffClass.liftEff Headers.main
-  header <- SpecHelpers.getHeader "http://localhost:8082" "X-Example"
-  header `Assertions.shouldEqual` "hello world!"
+postSpec :: SpecHelpers.Test
+postSpec = Spec.it "runs the post example" do
+  EffClass.liftEff Post.main
+  response <- SpecHelpers.post 8084 StrMap.empty "/" "test"
+  response `Assertions.shouldEqual` "test"
 
 integrationSpec :: SpecHelpers.Test
 integrationSpec = Spec.describe "Integration" do
+  headersSpec
   helloWorldSpec
   multiRouteSpec
-  headersSpec
+  postSpec

test/HTTPure/ServerSpec.purs

@@ -21,7 +21,7 @@ serveSpec :: SpecHelpers.Test
 serveSpec = Spec.describe "serve" do
   Spec.it "boots a server on the given port" do
     EffClass.liftEff $ Server.serve 7901 mockRouter $ pure unit
-    out <- SpecHelpers.get "http://localhost:7901/test"
+    out <- SpecHelpers.get 7901 StrMap.empty "/test"
     out `Assertions.shouldEqual` "/test"
 
 serverSpec :: SpecHelpers.Test

test/HTTPure/SpecHelpers.purs

@@ -7,6 +7,7 @@ import Control.Monad.Eff as Eff
 import Control.Monad.Eff.Exception as Exception
 import Control.Monad.ST as ST
 import Data.Maybe as Maybe
+import Data.Options as Options
 import Data.String as StringUtil
 import Data.StrMap as StrMap
 import Node.Encoding as Encoding
@@ -40,19 +41,29 @@ type Test = Spec.Spec TestEffects Unit
 -- | The type for the entire test suite.
 type TestSuite = Eff.Eff TestEffects Unit
 
--- | Given an HTTPClient.Request, close the request stream so the request can be
--- | fired.
-endRequest :: forall e.
-              HTTPClient.Request -> Eff.Eff (http :: HTTP.HTTP | e) Unit
-endRequest request = Stream.end (HTTPClient.requestAsStream request) $ pure unit
-
 -- | Given a URL, a failure handler, and a success handler, create an HTTP
 -- | client request.
-getResponse :: forall e.
-               String ->
-               Aff.Aff (http :: HTTP.HTTP | e) HTTPClient.Response
-getResponse url = Aff.makeAff \_ success ->
-  HTTPClient.requestFromURI url success >>= endRequest
+request :: forall e.
+           Int ->
+           String ->
+           StrMap.StrMap String ->
+           String ->
+           String ->
+           Aff.Aff (http :: HTTP.HTTP | e) HTTPClient.Response
+request port method headers path body = Aff.makeAff \_ success -> do
+  req <- HTTPClient.request options success
+  let stream = HTTPClient.requestAsStream req
+  _ <- Stream.writeString stream Encoding.UTF8 body noop
+  Stream.end stream noop
+  noop
+  where
+    noop = pure unit
+    options =
+      HTTPClient.method `Options.assoc` method <>
+      HTTPClient.hostname `Options.assoc` "localhost" <>
+      HTTPClient.port `Options.assoc` port <>
+      HTTPClient.path `Options.assoc` path <>
+      HTTPClient.headers `Options.assoc` HTTPClient.RequestHeaders headers
 
 -- | Given an ST String buffer and a new string, concatenate that new string
 -- | onto the ST buffer.
@@ -71,8 +82,22 @@ toString response = Aff.makeAff \_ success -> do
 
 -- | Run an HTTP GET with the given url and return an Aff that contains the
 -- | string with the response body.
-get :: forall e. String -> Aff.Aff (HTTPRequestEffects e) String
-get url = getResponse url >>= toString
+get :: forall e.
+       Int ->
+       StrMap.StrMap String ->
+       String ->
+       Aff.Aff (HTTPRequestEffects e) String
+get port headers path = request port "GET" headers path "" >>= toString
+
+-- | Run an HTTP POST with the given url and body and return an Aff that
+-- | contains the string with the response body.
+post :: forall e.
+        Int ->
+        StrMap.StrMap String ->
+        String ->
+        String ->
+        Aff.Aff (HTTPRequestEffects e) String
+post port headers path body = request port "POST" headers path body >>= toString
 
 -- | Convert a request to an Aff containing the string with the given header
 -- | value.
@@ -85,10 +110,13 @@ extractHeader header = unmaybe <<< lookup <<< HTTPClient.responseHeaders
 -- | Run an HTTP GET with the given url and return an Aff that contains the
 -- | string with the header value for the given header.
 getHeader :: forall e.
+             Int ->
+             StrMap.StrMap String ->
              String ->
              String ->
              Aff.Aff (HTTPRequestEffects e) String
-getHeader url header = extractHeader header <$> getResponse url
+getHeader port headers path header =
+  extractHeader header <$> request port "GET" headers path ""
 
 -- | An effect encapsulating creating a mock request object
 foreign import data MOCK_REQUEST :: Eff.Effect