Add golden test for base command help

cardano-cli/test/cardano-cli-golden/Test/Golden/Help.hs

@@ -101,14 +101,18 @@ hprop_golden_HelpCmds =
             [ "help"
             ]
 
-      let lines = Text.lines $ Text.pack help
-      let usages = List.filter (not . null) $ fmap extractCmd $ maybeToList . selectCmd =<< lines
+      let lines = Text.lines (Text.pack help)
+      let usages = [] : List.filter (not . null) (fmap extractCmd $ maybeToList . selectCmd =<< lines)
 
       forM_ usages $ \usage -> do
         H.noteShow_ usage
         let expectedCmdHelpFp =
-              "test/cardano-cli-golden/files/golden/help" </> Text.unpack (Text.intercalate "_" usage) <> ".cli"
+              "test/cardano-cli-golden/files/golden" </> subPath usage
 
         cmdHelp <- filterAnsi . third <$> H.execDetailCardanoCLI (fmap Text.unpack usage)
 
         H.diffVsGoldenFile cmdHelp expectedCmdHelpFp
+ where
+  subPath :: [Text] -> FilePath
+  subPath [] = "base_help.cli"
+  subPath usage = "help" </> Text.unpack (Text.intercalate "_" usage) <> ".cli"

cardano-cli/test/cardano-cli-golden/files/golden/base_help.cli

@@ -0,0 +1,67 @@
+cardano-cli - General purpose command-line utility to interact with
+cardano-node. Provides specific commands to manage keys, addresses, build &
+submit transactions, certificates, etc.
+
+Usage: cardano-cli 
+                     ( address
+                     | key
+                     | node
+                     | hash
+                     | query
+                     | legacy
+                     | byron
+                     | shelley
+                     | allegra
+                     | mary
+                     | alonzo
+                     | babbage
+                     | conway
+                     | latest
+                     | debug commands
+                     | version
+                     | compatible
+                     )
+
+Available options:
+  --version                Show the cardano-cli version
+  -h,--help                Show this help text
+
+Available commands:
+  address                  Payment address commands.
+  key                      Key utility commands.
+  node                     Node operation commands.
+  hash                     Compute the hash to pass to the various --*-hash
+                           arguments of commands.
+  query                    Node query commands. Will query the local node whose
+                           Unix domain socket is obtained from the
+                           CARDANO_NODE_SOCKET_PATH environment variable.
+  legacy                   Legacy commands
+
+Byron specific commands
+  byron                    Byron specific commands
+
+Available commands:
+  shelley                  Shelley era commands - DEPRECATED - will be removed
+                           in the future
+  allegra                  Allegra era commands - DEPRECATED - will be removed
+                           in the future
+  mary                     Mary era commands - DEPRECATED - will be removed in
+                           the future
+  alonzo                   Alonzo era commands - DEPRECATED - will be removed in
+                           the future
+  babbage                  Babbage era commands - DEPRECATED - will be removed
+                           in the future
+  conway                   Conway era commands
+  latest                   Latest era commands (Conway)
+
+debug commands
+  debug                    Debug commands
+
+Miscellaneous commands
+  help                     Show all help
+  version                  Show the cardano-cli version
+  ping                     Ping a cardano node either using node-to-node or node-to-client protocol. It negotiates a handshake and keeps sending keep alive messages.
+
+Available commands:
+  compatible               Limited backward compatible commands for testing
+                           only.