hcltest is a library for testing command-line applications.
The library provides integration with tasty. Here's an example of a simple test using the library together with tasty:
{-# LANGUAGE OverloadedStrings #-} -- we enable OverloadedStrings because hcltest uses text
module Main where
import Test.Tasty
import Test.Tasty.HClTest -- this is the library
import System.Exit (ExitCode(ExitSuccess))
main :: IO ()
main = defaultMain $ testGroup "main"
[ hcltest "true is successful" (testExitCode Nothing Nothing 1000 "true" [] ExitSuccess)
, hcltest "cat works" $ testInteractive Nothing Nothing 1000 "cat" [] $ do
send "Hey!"
expect Stdout "Hey!"
return ExitSuccess
]Here, we created a tasty test case with the hcltest function. The first argument of that
function specifies the name of the test case. In the second argument, you can then perform
hcltest actions, like testExitCode or testInterative. See the haddocks for the details
of the arguments to these functions.