1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
module Data.String.Interpolate.UtilSpec (main, spec) where
import Prelude ()
import Prelude.Compat
import Test.Hspec
import Test.QuickCheck
import Data.String.Interpolate.Util
main :: IO ()
main = hspec spec
emptyLine :: Gen String
emptyLine = (++ "\n") <$> listOf (elements " \t")
spec :: Spec
spec = do
describe "unindent" $ do
it "removes indentation" $ do
let xs = " foo\n bar\n baz \n"
unindent xs `shouldBe` " foo\nbar\n baz \n"
it "removes the first line of the string if it is empty" $ do
forAll emptyLine $ \xs -> do
let ys = " foo\nbar\n baz\n"
unindent (xs ++ ys) `shouldBe` ys
it "does not affect additional empty lines at the beginning" $ do
unindent " \n \nfoo" `shouldBe` " \nfoo"
it "empties the last line if it only consists of spaces" $ do
let xs = "foo\n "
unindent xs `shouldBe` "foo\n"
it "does not affect other whitespace lines at the end" $ do
unindent "foo\n \n " `shouldBe` "foo\n \n"
it "disregards empty lines when calculating indentation" $ do
let xs = " foo\n\n \n bar\n"
unindent xs `shouldBe` "foo\n\n\nbar\n"
it "correctly handles strings that do not end with a newline" $ do
let xs = "foo"
unindent xs `shouldBe` xs
it "does not affect lines consisting of whitespace (apart from unindenting)" $ do
unindent " foo\n \n bar" `shouldBe` "foo\n \nbar"
it "is total" $ do
property $ \xs -> length (unindent xs) `shouldSatisfy` (>= 0)
context "when all lines are empty" $ do
it "does not unindent at all" $ do
forAll emptyLine $ \x -> (forAll $ listOf emptyLine) $ \xs -> do
let ys = concat xs
unindent (x ++ ys) `shouldBe` ys
|
