Modify BaseUrl tests and add some new BaseUrl tests to check if paths are correctly used

servant-client/test/Servant/Common/BaseUrlSpec.hs

@@ -15,14 +15,17 @@ spec :: Spec
 spec = do
   describe "showBaseUrl" $ do
     it "shows a BaseUrl" $ do
-      showBaseUrl (BaseUrl Http "foo.com" 80) `shouldBe` "http://foo.com"
-
+      showBaseUrl (BaseUrl Http "foo.com" 80 "") `shouldBe` "http://foo.com"
     it "shows a https BaseUrl" $ do
-      showBaseUrl (BaseUrl Https "foo.com" 443) `shouldBe` "https://foo.com"
+      showBaseUrl (BaseUrl Https "foo.com" 443 "") `shouldBe` "https://foo.com"
+    it "shows the path of a BaseUrl" $ do
+      showBaseUrl (BaseUrl Http "foo.com" 80 "api") `shouldBe` "http://foo.com/api"
+    it "shows the path of an https BaseUrl" $ do
+      showBaseUrl (BaseUrl Https "foo.com" 80 "api") `shouldBe` "https://foo.com/api"
 
   describe "httpBaseUrl" $ do
     it "allows to construct default http BaseUrls" $ do
-      BaseUrl Http "bar" 80 `shouldBe` BaseUrl Http "bar" 80
+      BaseUrl Http "bar" 80 "" `shouldBe` BaseUrl Http "bar" 80 ""
 
   describe "parseBaseUrl" $ do
     it "is total" $ do
@@ -35,15 +38,21 @@ spec = do
         parseBaseUrl (showBaseUrl baseUrl) ===
           Right baseUrl
 
+    context "trailing slashes" $ do
       it "allows trailing slashes" $ do
-      parseBaseUrl "foo.com/" `shouldBe` Right (BaseUrl Http "foo.com" 80)
+        parseBaseUrl "foo.com/" `shouldBe` Right (BaseUrl Http "foo.com" 80 "")
+      it "allows trailing slashes in paths" $ do
+        parseBaseUrl "foo.com/api/" `shouldBe` Right (BaseUrl Http "foo.com" 80 "api")
 
     context "urls without scheme" $ do
       it "assumes http" $ do
-        parseBaseUrl "foo.com" `shouldBe` Right (BaseUrl Http "foo.com" 80)
+        parseBaseUrl "foo.com" `shouldBe` Right (BaseUrl Http "foo.com" 80 "")
 
       it "allows port numbers" $ do
-        parseBaseUrl "foo.com:8080" `shouldBe` Right (BaseUrl Http "foo.com" 8080)
+        parseBaseUrl "foo.com:8080" `shouldBe` Right (BaseUrl Http "foo.com" 8080 "")
+
+    it "can parse paths" $ do
+      parseBaseUrl "http://foo.com/api" `shouldBe` Right (BaseUrl Http "foo.com" 80 "api") 
 
     it "rejects ftp urls" $ do
       parseBaseUrl "ftp://foo.com" `shouldSatisfy` isLeft
@@ -52,12 +61,13 @@ instance Arbitrary BaseUrl where
   arbitrary = BaseUrl <$>
     elements [Http, Https] <*>
     hostNameGen <*>
-    portGen
+    portGen <*>
+    pathGen
    where
+    letters = ['a' .. 'z'] ++ ['A' .. 'Z']
     -- this does not perfectly mirror the url standard, but I hope it's good
     -- enough.
     hostNameGen = do
-      let letters = ['a' .. 'z'] ++ ['A' .. 'Z']
       first <- elements letters
       middle <- listOf1 $ elements (letters ++ ['0' .. '9'] ++ ['.', '-'])
       last <- elements letters
@@ -67,6 +77,7 @@ instance Arbitrary BaseUrl where
       (1, return 443) :
       (1, choose (1, 20000)) :
       []
+    pathGen = listOf1 . elements $ letters
 
 isLeft :: Either a b -> Bool
 isLeft = either (const True) (const False)