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{-# LANGUAGE BlockArguments #-}
{-# LANGUAGE QuasiQuotes #-}
module Main (main) where
import Data.ByteString.Char8 qualified as B
import Data.ByteString.Lazy.Char8 qualified as LB
import Data.Text qualified as T
import Data.Text.Lazy qualified as LT
import Process.Shell
import Test.Hspec
main :: IO ()
main = hspec do
describe "output" do
it "capture stdout" do
(`shouldBe` "stdout") . fst @String @String =<< [sh|echo -n stdout|]
it "capture stderr" do
(`shouldBe` "stderr") . snd @String =<< [sh|>&2 echo -n stderr|]
it "capture stdout and stderr interleaved" do
(`shouldBe` ("stdout", "stderr"))
=<< [sh|
echo -n stdout
>&2 echo -n stderr
|]
it "capture interleaved" do
(`shouldBe` "stdout\nstderr\n")
=<< [sh|
echo stdout
>&2 echo stderr
|]
describe "arguments" do
it "passes `Int`" do
(`shouldBe` "1") =<< let x = 1 :: Int in [sh|echo -n '#{x}'|]
it "passes `Text`" do
(`shouldBe` "foobar") =<< let x = T.pack "foobar" in [sh|echo -n '#{x}'|]
(`shouldBe` "foobar") =<< let x = LT.pack "foobar" in [sh|echo -n '#{x}'|]
it "passes `ByteString`" do
(`shouldBe` "foobar") =<< let x = B.pack "foobar" in [sh|echo -n '#{x}'|]
(`shouldBe` "foobar") =<< let x = LB.pack "foobar" in [sh|echo -n '#{x}'|]
it "interpolates expressions" do
(`shouldBe` "1") =<< let x = 1 :: Int in [sh|echo -n '#{show x}'|]
describe "quoting" do
it "preserves arguments" do
(`shouldBe` "foo\\ bar")
=<< let x = "foo bar" in [sh|printf %q '#{x}'|]
it "preserves special characters" do
(`shouldBe` "foo\\ bar")
=<< let x = "$foo $bar" in [sh|foo=foo; bar=bar; ( printf %q #{x} )|]
it "escapes special characters" do
(`shouldBe` "\\$foo\\ \\$bar")
=<< let x = "$foo $bar" in [sh|foo=foo; bar=bar; ( printf %q '#{x}' )|]
it "preserves empty arguments" do
(`shouldBe` "''") =<< let x = "" in [sh|printf %q #{x}|]
(`shouldBe` "''") =<< let x = "" in [sh|printf %q '#{x}'|]
|
