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64 lines
1.9 KiB
Haskell
64 lines
1.9 KiB
Haskell
module UtilTest where
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import Control.DeepSeq
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import Control.Exception (evaluate)
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import Data.Aeson (object, toJSON, (.=))
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import qualified Data.Aeson as Aeson
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import Test.Tasty.Hspec
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import Util
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spec_camelToKebabCase :: Spec
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spec_camelToKebabCase = do
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"foobar" ~> "foobar"
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"s3" ~> "s3"
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"fooBarBar" ~> "foo-bar-bar"
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"s3Folder" ~> "s3-folder"
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"S3Folder" ~> "s3-folder"
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where
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camel ~> kebab = it (camel ++ " -> " ++ kebab) $ do
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camelToKebabCase camel `shouldBe` kebab
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spec_onFirst :: Spec
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spec_onFirst = do
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it "Returns empty list for empty list" $ do
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(onFirst id ([] :: [Char])) `shouldBe` []
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it "Applies given method on first element of list" $ do
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onFirst (+ 1) ([1, 2, 3] :: [Int]) `shouldBe` [2, 2, 3]
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spec_toLowerFirst :: Spec
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spec_toLowerFirst = do
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it "Lowers first letter of string" $ do
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toLowerFirst "FooBar" `shouldBe` "fooBar"
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spec_toUpperFirst :: Spec
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spec_toUpperFirst = do
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it "Capitalizes first letter of string" $ do
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toUpperFirst "fooBar" `shouldBe` "FooBar"
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spec_jsonSet :: Spec
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spec_jsonSet = do
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let inputObj =
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object
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[ "prop1" .= ("first" :: String)
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]
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it "When input JSON is not an object, throws an error." $ do
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(evaluate . force) (jsonSet "someProp" (Aeson.Number 23) (Aeson.Bool True))
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`shouldThrow` errorCall "Input JSON must be an object"
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it "When a new property is set, result object contains it along with the original ones." $ do
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let expectedObj =
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object
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[ "prop1" .= ("first" :: String),
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"newProp" .= (23 :: Int)
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]
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(jsonSet "newProp" (Aeson.Number 23) inputObj) `shouldBe` expectedObj
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it "When an existing property is set, it is overwritten in the result object." $ do
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let newStrValue = "newVal" :: String
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let expectedObj =
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object
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[ "prop1" .= newStrValue
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]
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(jsonSet "prop1" (toJSON newStrValue) inputObj) `shouldBe` expectedObj
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