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semantic/test/RangeSpec.hs
2015-12-17 13:10:12 -05:00

31 lines
1.2 KiB
Haskell

module RangeSpec where
import Test.Hspec
import Range
spec :: Spec
spec = describe "rangesAndWordsFrom" $ do
it "should produce no ranges for the empty string" $
rangesAndWordsFrom 0 [] `shouldBe` []
it "should produce no ranges for whitespace" $
rangesAndWordsFrom 0 " \t\n " `shouldBe` []
it "should produce a list containing the range of the string for a single-word string" $
rangesAndWordsFrom 0 "word" `shouldBe` [ (Range 0 4, "word") ]
it "should produce a list of ranges for whitespace-separated words" $
rangesAndWordsFrom 0 "wordOne wordTwo" `shouldBe` [ (Range 0 7, "wordOne"), (Range 8 15, "wordTwo") ]
it "should skip multiple whitespace characters" $
rangesAndWordsFrom 0 "a b" `shouldBe` [ (Range 0 1, "a"), (Range 3 4, "b") ]
it "should skip whitespace at the start" $
rangesAndWordsFrom 0 " a b" `shouldBe` [ (Range 2 3, "a"), (Range 4 5, "b") ]
it "should skip whitespace at the end" $
rangesAndWordsFrom 0 "a b " `shouldBe` [ (Range 0 1, "a"), (Range 2 3, "b") ]
it "should produce ranges offset by its start index" $
rangesAndWordsFrom 100 "a b" `shouldBe` [ (Range 100 101, "a"), (Range 102 103, "b") ]