Rename tests directory into test

test/SlackBuilder/LatestVersionCheckSpec.hs

@@ -0,0 +1,53 @@
+{- 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.LatestVersionCheckSpec
+    ( spec
+    ) where
+
+import SlackBuilder.LatestVersionCheck
+import Test.Hspec (Spec, describe, it, shouldBe)
+
+spec :: Spec
+spec = do
+    describe "match" $ do
+        it "matches an exact tag prefixed with v" $
+            let expected = Just "2.6.0"
+                actual = match "(v)2.6.0" "v2.6.0"
+             in actual `shouldBe` expected
+
+        it "matches a glob pattern prefixed with v" $
+            let expected = Just "2.6.0"
+                actual = match "(v)*" "v2.6.0"
+             in actual `shouldBe` expected
+
+        it "matches digits" $
+            let expected = Just "2.6.0"
+                actual = match "(v)2.6.\\d" "v2.6.0"
+             in actual `shouldBe` expected
+
+        it "matches digits and dots" $
+            let expected = Just "2.6.0"
+                actual = match "(v)\\." "v2.6.0"
+             in actual `shouldBe` expected
+
+        it "rejects unexpected suffix" $
+            let expected = Nothing
+                actual = match "(v)\\." "v2.6.0-rc1"
+             in actual `shouldBe` expected
+
+        it "rejects remaining umatched characters" $
+            let expected = Nothing
+                actual = match "2.6.0-rc1" "2.6.0"
+             in actual `shouldBe` expected
+
+        it "consumes the last token matching nothing" $
+            let expected = Just "abc"
+                actual = match "abc\\d\\d" "abc"
+             in actual `shouldBe` expected
+
+        it "matches at least one digit" $
+            let expected = Nothing
+                actual = match "1.\\D.3" "1..3"
+             in actual `shouldBe` expected