-- WARNING! Do not remove trailing whitespace or tabs, it's part of the test!
{-# OPTIONS_GHC -fno-warn-tabs #-}
{-# LANGUAGE PackageImports #-}
{-# LANGUAGE QuasiQuotes #-}
module QN.Spec (spec) where
import "hspec" Test.Hspec (Spec, describe, it, shouldBe)
-- local imports
import "qm-interpolated-string" Text.InterpolatedString.QM (qn)
spec :: Spec
spec = do
describe "Examples from README" $ do
it "First (decorative spacing and escaping space symbol)" $
[qn| hello world,
\ what's going on here? |]
`shouldBe` "hello world, what's going on here?"
it "Second (merging lines without spaces)" $
[qn|
it's actual
ly ignored
|]
`shouldBe` "it's actually ignored"
it "Third (explicit line breaks symbols)" $
[qn| \ You could explicitly escape indentation or\n
line breaks when you really need it! \
|] `shouldBe` " You could explicitly escape indentation or\n\
\line breaks when you really need it! "
it "Fourth (escaping interpolation blocks to show them as text)" $
[qn| {1+2} \{3+4} |] `shouldBe` "{1+2} \\{3+4}"
it "Empty string" $ [qn| |] `shouldBe` ""
it "Type annotation in interpolation block" $
[qn|{10 :: Float}|] `shouldBe` "{10 :: Float}"
describe "Escaping" $ do
it "Escaping interpolation symbols inside interpolation block" $ do
[qn|foo {"b{a{r"} baz|] `shouldBe` "foo {\"b{a{r\"} baz"
[qn|foo {"b\}a\}r"} baz|] `shouldBe` "foo {\"b\\}a\\}r\"} baz"
it "Escaping backslashes" $ do [qn| foo\bar |] `shouldBe` "foo\\bar"
[qn| foo\\bar |] `shouldBe` "foo\\bar"
[qn| foo\\\bar |] `shouldBe` "foo\\\\bar"
[qn| foo\\\\bar |] `shouldBe` "foo\\\\bar"
it "Escaping space by slash at EOL after space" $
[qn| foo \
bar |] `shouldBe` "foo bar"
it "Escaped spaces at the edges" $ do [qn| foo\ |] `shouldBe` "foo "
[qn|\ foo |] `shouldBe` " foo"
it "Escaping backslash itself when it makes sense" $ do
[qn| foo\nbar |] `shouldBe` "foo\nbar"
[qn| foo\\nbar |] `shouldBe` "foo\\nbar"
[qn| foo\tbar |] `shouldBe` "foo\tbar"
[qn| foo\\tbar |] `shouldBe` "foo\\tbar"
[qn| foo\ bar |] `shouldBe` "foo\tbar"
[qn| foo\\ bar |] `shouldBe` "foo\\\tbar"
[qn| foo\ bar |] `shouldBe` "foo bar"
[qn| foo\\ bar |] `shouldBe` "foo\\ bar"
[qn| foo\
bar |] `shouldBe` "foobar"
[qn| foo\\
bar |] `shouldBe` "foo\\bar"
-- By 'not really' it means we just shows here what happens with examples
-- for QM when we use them with QN quoter.
describe "Escaping inside interpolation blocks (not really!)" $ do
it "Line-breaks must be interpreted as just haskell code\
\ (not really!)" $ do
[qn| {'\n'} |] `shouldBe` "{'\n'}"
[qn| {"foo\nbar"} |] `shouldBe` "{\"foo\nbar\"}"
[qn| {"foo\\nbar"} |] `shouldBe` "{\"foo\\nbar\"}"
[qn| {"foo\\\nbar"} |] `shouldBe` "{\"foo\\\nbar\"}"
[qn| {"foo\\\\nbar"} |] `shouldBe` "{\"foo\\\\nbar\"}"
it "Escaping for multiline strings" $ do
[qn| {"foo\
\bar\
\baz"} |] `shouldBe` "{\"foo\\bar\\baz\"}"
[qn| {"foo \
\bar\
\ baz"} |] `shouldBe` "{\"foo \\bar baz\"}"
[qn| x \
{"foo \
\bar\
\ baz"} \
y |] `shouldBe` "x {\"foo \\bar baz\"} y"
it "Escaping of close-bracket '}'" $ do
[qn| { testFoo {testBar = 9000\} } |]
`shouldBe` "{ testFoo {testBar = 9000\\} }"
[qn| foo{ testFoo {testBar = 9000\} }bar |]
`shouldBe` "foo{ testFoo {testBar = 9000\\} }bar"
[qn|foo{testFoo2 {test1 = (test1 testFoo2) {testBar = 9000\}\}}bar|]
`shouldBe`
"foo{testFoo2 {test1 = (test1 testFoo2) {testBar = 9000\\}\\}}bar"
[qn| foo { testFoo2 {
test1 = (test1 testFoo2)
{ testBar = 9000 \}
\}
} bar |]
`shouldBe` "foo { testFoo2 {test1 = (test1 testFoo2)\
\{ testBar = 9000 \\}\\}} bar"
[qn| {"\}"} |] `shouldBe` "{\"\\}\"}"
[qn| {"\\\}"} |] `shouldBe` "{\"\\\\}\"}"
[qn| {123}} |] `shouldBe` "{123}}"
it "When interpolation block is escaped\
\ everything must be interpreted as usual (not really)" $ do
[qn| \{ foo\nbar\\baz\} } |] `shouldBe` "\\{ foo\nbar\\baz\\} }"
[qn| \{ foo\
bar } |] `shouldBe` "\\{ foobar }"
it "Tabs characters in string inside interpolation block\
\ (not really!)" $ do
[qn| {"foo\t\tbar" } |] `shouldBe` "{\"foo\t\tbar\" }"
[qn| {"foo bar" } |] `shouldBe` "{\"foo\t\tbar\" }"
[qn| {"foo\\t\tbar"} |] `shouldBe` "{\"foo\\t\tbar\"}"
describe "Tabs as indentation" $ do
it "Tabs is only indentation at left side" $ do
[qn|
foo bar baz
|] `shouldBe` "foo bar baz"
[qn| foo bar baz|] `shouldBe` "foo bar baz"
it "Tabs also at EOL" $ do
[qn|
foo bar baz
|] `shouldBe` "foo bar baz"
[qn| foo bar baz |] `shouldBe` "foo bar baz"
it "Escaped tabs" $ do
[qn| \tfoo|] `shouldBe` "\tfoo"
[qn| \ foo |] `shouldBe` "\tfoo"
[qn| foo \ |] `shouldBe` "foo\t\t\t"
[qn| foo \ |] `shouldBe` "foo\t\t"
[qn| foo\ |] `shouldBe` "foo\t"
it "Tails" $ do
[qn|
foo
|] `shouldBe` "foo"
[qn|
foo
|] `shouldBe` "foo"
[qn|
foo
|] `shouldBe` "foo"
describe "New README examples" $ do
it "First example" $
[qn| Hello,
world!
Pi is {floor pi}.{floor $ (pi - 3) * 100}… |]
`shouldBe` "Hello,world!Pi is {floor pi}.{floor $ (pi - 3) * 100}…"
it "Simple usage example" $
[qn|
<article>
<h1>{title}</h1>
<p>{text}</p>
</article>
|] `shouldBe` "<article><h1>{title}</h1><p>{text}</p></article>"
it "Can escape spaces" $
[qn| you can escape spaces
\ when you need them |]
`shouldBe`
"you can escape spaces when you need them"
it "Indentation and line breaks are ignored" $
[qn|
indentation and li
ne bre
aks are i
gno
red
|]
`shouldBe` "indentation and line breaks are ignored"
it "Escaping indentation or line breaks" $
[qn| \ You can escape indentation or\n
line breaks when you need them! \ |]
`shouldBe`
" You can escape indentation or\nline breaks when you need them! "
it "Interpolation blocks can be escaped too" $
[qn| Interpolation blocks can be escaped too: {1+2} \{3+4} |]
`shouldBe`
"Interpolation blocks can be escaped too: {1+2} \\{3+4}"
it "Interpolation" $ [qn| foo {1+2} |] `shouldBe` "foo {1+2}"
it "Haddock example" $ do
[qn| foo {'b':'a':'r':""}
\ baz |] `shouldBe` "foo {'b':'a':'r':\"\"} baz"
[qn| foo
\ {'b':'a':'r':""}
\ baz |] `shouldBe` "foo {'b':'a':'r':\"\"} baz"
[qn| foo {'b':'a':'r':""}
baz |] `shouldBe` "foo {'b':'a':'r':\"\"}baz"