Rename tests directory into test

test/SlackBuilder/PackageSpec.hs

@@ -0,0 +1,26 @@
+{- This Source Code Form is subject to the terms of the Mozilla Public License,
+   v. 2.0. If a copy of the MPL was not distributed with this file, You can
+   obtain one at https://mozilla.org/MPL/2.0/. -}
+
+module SlackBuilder.PackageSpec
+    ( spec
+    ) where 
+
+import SlackBuilder.Package
+import Test.Hspec (Spec, describe, it, shouldBe)
+import Text.URI.QQ (uri)
+
+spec :: Spec
+spec = do
+    describe "renderDownloadWithVersion" $ do
+        it "renders text as URL" $
+            let given = DownloadTemplate "https://example.com"
+                actual = renderDownloadWithVersion given "1.2"
+                expected = Just [uri|https://example.com|]
+             in actual `shouldBe` expected
+
+        it "renders the components in order" $
+            let given = DownloadTemplate "https://example.com/{version}/segment"
+                actual = renderDownloadWithVersion given "1.2"
+                expected = Just [uri|https://example.com/1.2/segment|]
+             in actual `shouldBe` expected