@@ -1,29 +1,33 @@
1{-# LANGUAGE CPP #-}
1{-# LANGUAGE CPP #-}
2module Servant.QuickCheck.InternalSpec (spec) where
2module Servant.QuickCheck.InternalSpec (spec) where
4import Control.Concurrent.MVar (newMVar, readMVar, swapMVar)
5import Control.Concurrent.MVar (newMVar, readMVar, swapMVar)
6+import Control.Exception (SomeException)
7+import Control.Monad (replicateM)
5import Control.Monad.IO.Class (liftIO)
8import Control.Monad.IO.Class (liftIO)
6import qualified Data.ByteString as BS
9import qualified Data.ByteString as BS
7import qualified Data.ByteString.Char8 as C
10import qualified Data.ByteString.Char8 as C
11+import Data.Maybe (fromJust)
12+import Network.HTTP.Client (path, queryString)
8import Prelude.Compat
13import Prelude.Compat
9import Servant
14import Servant
15+import Servant.HTML.Blaze (HTML)
16+import qualified Text.Blaze.Html as Blaze
17+import qualified Text.Blaze.Html5 as Blaze5
10import Test.Hspec (Spec, context, describe, it, shouldBe,
18import Test.Hspec (Spec, context, describe, it, shouldBe,
11 shouldContain)
19 shouldContain)
12−import Test.Hspec.Core.Spec (Arg, Example, Result (..),
20+import Test.Hspec.Core.Spec (Arg, Example, Result (..), ResultStatus (..),
13− defaultParams, evaluateExample)
21+ defaultParams, safeEvaluateExample)
14−import Test.QuickCheck.Gen (unGen)
22+import Test.QuickCheck.Gen (generate, unGen)
15import Test.QuickCheck.Random (mkQCGen)
23import Test.QuickCheck.Random (mkQCGen)
16−import Network.HTTP.Client (queryString)
18−#if MIN_VERSION_servant(0,8,0)
25+
19−import Servant.API.Internal.Test.ComprehensiveAPI (comprehensiveAPIWithoutRaw)
26+import Servant.Test.ComprehensiveAPI (comprehensiveAPIWithoutStreamingOrRaw)
21−import Servant.API.Internal.Test.ComprehensiveAPI (ComprehensiveAPI,
25import Servant.QuickCheck
28import Servant.QuickCheck
26−import Servant.QuickCheck.Internal (genRequest, serverDoesntSatisfy)
29+import Servant.QuickCheck.Internal (genRequest, runGenRequest,
28spec :: Spec
32spec :: Spec
@@ -34,6 +38,9 @@ spec = do
34 notLongerThanSpec
38 notLongerThanSpec
35 queryParamsSpec
39 queryParamsSpec
36 queryFlagsSpec
40 queryFlagsSpec
43+ unbiasedGenerationSpec
38serversEqualSpec :: Spec
45serversEqualSpec :: Spec
39serversEqualSpec = describe "serversEqual" $ do
46serversEqualSpec = describe "serversEqual" $ do
@@ -44,15 +51,42 @@ serversEqualSpec = describe "serversEqual" $ do
44 serversEqual api burl1 burl2 args bodyEquality
51 serversEqual api burl1 burl2 args bodyEquality
46 context "when servers are not equal" $ do
53 context "when servers are not equal" $ do
49 it "provides the failing responses in the error message" $ do
54 it "provides the failing responses in the error message" $ do
50− Fail _ err <- withServantServer api2 server2 $ \burl1 ->
55+ FailedWith err <- withServantServer api2 server2 $ \burl1 ->
51 withServantServer api2 server3 $ \burl2 -> do
56 withServantServer api2 server3 $ \burl2 -> do
52 evalExample $ serversEqual api2 burl1 burl2 args bodyEquality
57 evalExample $ serversEqual api2 burl1 burl2 args bodyEquality
58+ show err `shouldContain` "Server equality failed"
53 show err `shouldContain` "Body: 1"
59 show err `shouldContain` "Body: 1"
54 show err `shouldContain` "Body: 2"
60 show err `shouldContain` "Body: 2"
55− show err `shouldContain` "Path: failplz/"
61+ show err `shouldContain` "Path: /failplz"
63+ context "when JSON is equal but looks a bit different as a ByteString" $ do
65+ it "sanity check: different whitespace same JSON objects bodyEquality fails" $ do
66+ FailedWith err <- withServantServer jsonApi jsonServer1 $ \burl1 ->
67+ withServantServer jsonApi jsonServer2 $ \burl2 -> do
68+ evalExample $ serversEqual jsonApi burl1 burl2 args bodyEquality
69+ show err `shouldContain` "Server equality failed"
71+ it "jsonEquality considers equal JSON apis equal regardless of key ordering or whitespace" $ do
72+ withServantServerAndContext jsonApi ctx jsonServer1 $ \burl1 ->
73+ withServantServerAndContext jsonApi ctx jsonServer2 $ \burl2 ->
74+ serversEqual jsonApi burl1 burl2 args jsonEquality
76+ it "sees when JSON apis are not equal because any value is different" $ do
77+ FailedWith err <- withServantServer jsonApi jsonServer2 $ \burl1 ->
78+ withServantServer jsonApi jsonServer3 $ \burl2 -> do
79+ evalExample $ serversEqual jsonApi burl1 burl2 args jsonEquality
80+ show err `shouldContain` "Server equality failed"
81+ show err `shouldContain` "Path: /jsonComparison"
83+ it "sees when JSON apis are not equal due to different keys but same values" $ do
84+ FailedWith err <- withServantServer jsonApi jsonServer2 $ \burl1 ->
85+ withServantServer jsonApi jsonServer4 $ \burl2 -> do
86+ evalExample $ serversEqual jsonApi burl1 burl2 args jsonEquality
87+ show err `shouldContain` "Server equality failed"
88+ show err `shouldContain` "Path: /jsonComparison"
57serverSatisfiesSpec :: Spec
91serverSatisfiesSpec :: Spec
58serverSatisfiesSpec = describe "serverSatisfies" $ do
92serverSatisfiesSpec = describe "serverSatisfies" $ do
@@ -74,33 +108,38 @@ serverSatisfiesSpec = describe "serverSatisfies" $ do
74 context "when predicates are false" $ do
108 context "when predicates are false" $ do
76 it "fails with informative error messages" $ do
110 it "fails with informative error messages" $ do
77− Fail _ err <- withServantServerAndContext api ctx server $ \burl -> do
111+ FailedWith err <- withServantServerAndContext api ctx server $ \burl -> do
78− evalExample $ serverSatisfies api burl args (getsHaveCacheControlHeader <%> mempty)
112+ evalExample $ serverSatisfies api burl args (notAllowedContainsAllowHeader <%> mempty)
79− err `shouldContain` "getsHaveCacheControlHeader"
113+ show err `shouldContain` "notAllowedContainsAllowHeader"
80− err `shouldContain` "Headers"
114+ show err `shouldContain` "Headers"
81− err `shouldContain` "Body"
115+ show err `shouldContain` "Body"
83onlyJsonObjectSpec :: Spec
118onlyJsonObjectSpec :: Spec
84onlyJsonObjectSpec = describe "onlyJsonObjects" $ do
119onlyJsonObjectSpec = describe "onlyJsonObjects" $ do
86 it "fails correctly" $ do
121 it "fails correctly" $ do
87− Fail _ err <- withServantServerAndContext api ctx server $ \burl -> do
122+ FailedWith err <- withServantServerAndContext api ctx server $ \burl -> do
88 evalExample $ serverSatisfies (Proxy :: Proxy (Get '[JSON] Int)) burl args
123 evalExample $ serverSatisfies (Proxy :: Proxy (Get '[JSON] Int)) burl args
89 (onlyJsonObjects <%> mempty)
124 (onlyJsonObjects <%> mempty)
90− err `shouldContain` "onlyJsonObjects"
125+ show err `shouldContain` "onlyJsonObjects"
92 it "accepts non-JSON endpoints" $ do
127 it "accepts non-JSON endpoints" $ do
93 withServantServerAndContext octetAPI ctx serverOctetAPI $ \burl ->
128 withServantServerAndContext octetAPI ctx serverOctetAPI $ \burl ->
94 serverSatisfies octetAPI burl args (onlyJsonObjects <%> mempty)
129 serverSatisfies octetAPI burl args (onlyJsonObjects <%> mempty)
131+ it "does not fail when there is no content-type" $ do
132+ withServantServerAndContext api2 ctx serverFailing $ \burl ->
133+ serverSatisfies api2 burl args (onlyJsonObjects <%> mempty)
96notLongerThanSpec :: Spec
135notLongerThanSpec :: Spec
97notLongerThanSpec = describe "notLongerThan" $ do
136notLongerThanSpec = describe "notLongerThan" $ do
99 it "fails correctly" $ do
138 it "fails correctly" $ do
100− Fail _ err <- withServantServerAndContext api ctx server $ \burl -> do
139+ FailedWith err <- withServantServerAndContext api ctx server $ \burl -> do
101 evalExample $ serverSatisfies (Proxy :: Proxy (Get '[JSON] Int)) burl args
140 evalExample $ serverSatisfies (Proxy :: Proxy (Get '[JSON] Int)) burl args
102 (notLongerThan 1 <%> mempty)
141 (notLongerThan 1 <%> mempty)
103− err `shouldContain` "notLongerThan"
142+ show err `shouldContain` "notLongerThan"
105 it "succeeds correctly" $ do
144 it "succeeds correctly" $ do
106 withServantServerAndContext api ctx server $ \burl ->
145 withServantServerAndContext api ctx server $ \burl ->
@@ -110,16 +149,27 @@ isComprehensiveSpec :: Spec
110isComprehensiveSpec = describe "HasGenRequest" $ do
149isComprehensiveSpec = describe "HasGenRequest" $ do
112 it "has instances for all 'servant' combinators" $ do
151 it "has instances for all 'servant' combinators" $ do
113− let _g = genRequest comprehensiveAPIWithoutRaw
152+ let _g = genRequest comprehensiveAPIWithoutStreamingOrRaw
114 True `shouldBe` True -- This is a type-level check
153 True `shouldBe` True -- This is a type-level check
156+deepPathSpec = describe "Path components" $ do
158+ it "are separated by slashes, without a trailing slash" $ do
160+ burl = BaseUrl Http "localhost" 80 ""
161+ gen = runGenRequest deepAPI
162+ req = (unGen gen rng 0) burl
163+ path req `shouldBe` ("/one/two/three")
116queryParamsSpec :: Spec
166queryParamsSpec :: Spec
117queryParamsSpec = describe "QueryParams" $ do
167queryParamsSpec = describe "QueryParams" $ do
119 it "reduce to an HTTP query string correctly" $ do
169 it "reduce to an HTTP query string correctly" $ do
120 let rng = mkQCGen 0
170 let rng = mkQCGen 0
121 burl = BaseUrl Http "localhost" 80 ""
171 burl = BaseUrl Http "localhost" 80 ""
122− gen = genRequest paramsAPI
172+ gen = runGenRequest paramsAPI
123 req = (unGen gen rng 0) burl
173 req = (unGen gen rng 0) burl
124 qs = C.unpack $ queryString req
174 qs = C.unpack $ queryString req
125 qs `shouldBe` "one=_&two=_"
175 qs `shouldBe` "one=_&two=_"
@@ -130,11 +180,52 @@ queryFlagsSpec = describe "QueryFlags" $ do
130 it "reduce to an HTTP query string correctly" $ do
180 it "reduce to an HTTP query string correctly" $ do
131 let rng = mkQCGen 0
181 let rng = mkQCGen 0
132 burl = BaseUrl Http "localhost" 80 ""
182 burl = BaseUrl Http "localhost" 80 ""
133− gen = genRequest flagsAPI
183+ gen = runGenRequest flagsAPI
134 req = (unGen gen rng 0) burl
184 req = (unGen gen rng 0) burl
135 qs = C.unpack $ queryString req
185 qs = C.unpack $ queryString req
136 qs `shouldBe` "one&two"
186 qs `shouldBe` "one&two"
188+htmlDocTypesSpec :: Spec
189+htmlDocTypesSpec = describe "HtmlDocTypes" $ do
191+ it "fails HTML without doctype correctly" $ do
192+ err <- withServantServerAndContext docTypeApi ctx noDocTypeServer $ \burl -> do
193+ evalExample $ serverSatisfies docTypeApi burl args
194+ (htmlIncludesDoctype <%> mempty)
195+ show err `shouldContain` "htmlIncludesDoctype"
197+ it "passes HTML with a doctype at start" $ do
198+ withServantServerAndContext docTypeApi ctx docTypeServer $ \burl ->
199+ serverSatisfies docTypeApi burl args (htmlIncludesDoctype <%> mempty)
201+ it "accepts json endpoints and passes over them in silence" $ do
202+ withServantServerAndContext api ctx server $ \burl -> do
203+ serverSatisfies (Proxy :: Proxy (Get '[JSON] Int)) burl args
204+ (htmlIncludesDoctype <%> mempty)
207+makeRandomRequest :: Proxy LargeAPI -> BaseUrl -> IO Integer
208+makeRandomRequest large burl = do
209+ req <- generate $ runGenRequest large
210+ pure $ fst . fromJust . C.readInteger . C.drop 1 . path $ req burl
213+unbiasedGenerationSpec :: Spec
214+unbiasedGenerationSpec = describe "Unbiased Generation of requests" $
216+ it "frequency paired with generated endpoint should be more randomly distributed" $ do
217+ let burl = BaseUrl Http "localhost" 80 ""
218+ let runs = 10000 :: Double
219+ someRequests <- replicateM 10000 (makeRandomRequest largeApi burl)
220+ let mean = (sum $ map fromIntegral someRequests) / runs
221+ let variancer x = let ix = fromIntegral x in (ix - mean) * (ix - mean)
222+ let variance = (sum $ map variancer someRequests) / runs - 1
223+ -- mean should be around 8.5. If this fails, we likely need more runs (or there's a bug!)
224+ mean > 8 `shouldBe` True
225+ mean < 9 `shouldBe` True
226+ -- Std dev is likely around 4. Variance is probably greater than 20.
227+ variance > 19.5 `shouldBe` True
138------------------------------------------------------------------------------
229------------------------------------------------------------------------------
140------------------------------------------------------------------------------
231------------------------------------------------------------------------------
@@ -170,12 +261,57 @@ type API2 = "failplz" :> Get '[JSON] Int
170api2 :: Proxy API2
261api2 :: Proxy API2
171api2 = Proxy
262api2 = Proxy
264+type DeepAPI = "one" :> "two" :> "three":> Get '[JSON] ()
266+deepAPI :: Proxy DeepAPI
173server2 :: IO (Server API2)
270server2 :: IO (Server API2)
174server2 = return $ return 1
271server2 = return $ return 1
176server3 :: IO (Server API2)
273server3 :: IO (Server API2)
177server3 = return $ return 2
274server3 = return $ return 2
276+serverFailing :: IO (Server API2)
277+serverFailing = return . throwError $ err405
280+type HtmlDoctype = Get '[HTML] Blaze.Html
282+docTypeApi :: Proxy HtmlDoctype
285+docTypeServer :: IO (Server HtmlDoctype)
286+docTypeServer = pure $ pure $ Blaze5.docTypeHtml $ Blaze5.span "Hello Test!"
288+noDocTypeServer :: IO (Server HtmlDoctype)
289+noDocTypeServer = pure $ pure $ Blaze.text "Hello Test!"
292+-- Api for unbiased generation of requests tests
293+largeApi :: Proxy LargeAPI
297+ = "1" :> Get '[JSON] Int
298+ :<|> "2" :> Get '[JSON] Int
299+ :<|> "3" :> Get '[JSON] Int
300+ :<|> "4" :> Get '[JSON] Int
301+ :<|> "5" :> Get '[JSON] Int
302+ :<|> "6" :> Get '[JSON] Int
303+ :<|> "7" :> Get '[JSON] Int
304+ :<|> "8" :> Get '[JSON] Int
305+ :<|> "9" :> Get '[JSON] Int
306+ :<|> "10" :> Get '[JSON] Int
307+ :<|> "11" :> Get '[JSON] Int
308+ :<|> "12" :> Get '[JSON] Int
309+ :<|> "13" :> Get '[JSON] Int
310+ :<|> "14" :> Get '[JSON] Int
311+ :<|> "15" :> Get '[JSON] Int
312+ :<|> "16" :> Get '[JSON] Int
179type OctetAPI = Get '[OctetStream] BS.ByteString
315type OctetAPI = Get '[OctetStream] BS.ByteString
181octetAPI :: Proxy OctetAPI
317octetAPI :: Proxy OctetAPI
@@ -184,17 +320,46 @@ octetAPI = Proxy
184serverOctetAPI :: IO (Server OctetAPI)
320serverOctetAPI :: IO (Server OctetAPI)
185serverOctetAPI = return $ return "blah"
321serverOctetAPI = return $ return "blah"
323+type JsonApi = "jsonComparison" :> Get '[OctetStream] BS.ByteString
325+jsonApi :: Proxy JsonApi
328+jsonServer1 :: IO (Server JsonApi)
329+jsonServer1 = return $ return "{ \"b\": [\"b\"], \"a\": 1 }" -- whitespace, ordering different
331+jsonServer2 :: IO (Server JsonApi)
332+jsonServer2 = return $ return "{\"a\": 1,\"b\":[\"b\"]}"
334+jsonServer3 :: IO (Server JsonApi)
335+jsonServer3 = return $ return "{\"a\": 2, \"b\": [\"b\"]}"
337+jsonServer4 :: IO (Server JsonApi)
338+jsonServer4 = return $ return "{\"c\": 1, \"d\": [\"b\"]}"
187ctx :: Context '[BasicAuthCheck ()]
341ctx :: Context '[BasicAuthCheck ()]
188ctx = BasicAuthCheck (const . return $ NoSuchUser) :. EmptyContext
342ctx = BasicAuthCheck (const . return $ NoSuchUser) :. EmptyContext
189------------------------------------------------------------------------------
343------------------------------------------------------------------------------
191------------------------------------------------------------------------------
345------------------------------------------------------------------------------
193−evalExample :: (Example e, Arg e ~ ()) => e -> IO Result
346+evalExample :: (Example e, Arg e ~ ()) => e -> IO EvalResult
194−evalExample e = evaluateExample e defaultParams ($ ()) progCallback
348+ r <- safeEvaluateExample e defaultParams ($ ()) progCallback
349+ case resultStatus r of
350+ Success -> return $ AllGood
351+ Failure _ reason -> return $ FailedWith $ show reason
352+ Pending {} -> error "should not happen"
196 progCallback _ = return ()
354 progCallback _ = return ()
357+ = AnException SomeException
198args :: Args
363args :: Args
199args = defaultArgs { maxSuccess = noOfTestCases }
364args = defaultArgs { maxSuccess = noOfTestCases }
@@ -204,8 +369,3 @@ noOfTestCases = 20000
205noOfTestCases = 1000
370noOfTestCases = 1000
208−#if !MIN_VERSION_servant(0,8,0)
209−comprehensiveAPIWithoutRaw :: Proxy ComprehensiveAPI
210−comprehensiveAPIWithoutRaw = comprehensiveAPI