hspec-subject:支持RSpec风格的`subject`和一线it-blocks

给定以下样板 {-# LANGUAGE QuasiQuotes #-} module Main where import Test.Hspec import Test.Hspec.Subject main :: IO () main = hspec spec 可以这样使用 spec :: Spec spec = do [ describe_ |23 + 42|] $ do [ it_ |`shouldBe` 65|] 相当于 spec :: Spec spec = do describe " 23 + 42 " $ do subject ( 23 + 42 ) $ do it " `shouldBe` 65 " ( `shouldBe` 65 ) （请注意， subject只是before . return的