unused/test/Unused/LikelihoodCalculatorSpec.hs
Joshua Clayton fde9f69a64
Replace Cabal-managed config loading with FileEmbed
This uses the file-embed package and TemplateHaskell to load custom
configuration during compilation instead of loading it at runtime.
2016-08-18 17:59:12 -04:00

64 lines
2.7 KiB
Haskell

module Unused.LikelihoodCalculatorSpec
( main
, spec
) where
import Test.Hspec
import Unused.LikelihoodCalculator
import Unused.ResultsClassifier
import Unused.Types
main :: IO ()
main = hspec spec
spec :: Spec
spec = parallel $
describe "calculateLikelihood" $ do
it "prefers language-specific checks first" $ do
let railsMatches = [ TermMatch "ApplicationController" "app/controllers/application_controller.rb" Nothing 1 ]
removalLikelihood' railsMatches `shouldBe` Low
let elixirMatches = [ TermMatch "AwesomeView" "web/views/awesome_view.ex" Nothing 1 ]
removalLikelihood' elixirMatches `shouldBe` Low
it "weighs widely-used methods as low likelihood" $ do
let matches = [ TermMatch "full_name" "app/models/user.rb" Nothing 4
, TermMatch "full_name" "app/views/application/_auth_header.rb" Nothing 1
, TermMatch "full_name" "app/mailers/user_mailer.rb" Nothing 1
, TermMatch "full_name" "spec/models/user_spec.rb" Nothing 10
]
removalLikelihood' matches `shouldBe` Low
it "weighs only-occurs-once methods as high likelihood" $ do
let matches = [ TermMatch "obscure_method" "app/models/user.rb" Nothing 1 ]
removalLikelihood' matches `shouldBe` High
it "weighs methods that seem to only be tested and never used as high likelihood" $ do
let matches = [ TermMatch "obscure_method" "app/models/user.rb" Nothing 1
, TermMatch "obscure_method" "spec/models/user_spec.rb" Nothing 5
]
removalLikelihood' matches `shouldBe` High
it "weighs methods that seem to only be tested and used in one other area as medium likelihood" $ do
let matches = [ TermMatch "obscure_method" "app/models/user.rb" Nothing 1
, TermMatch "obscure_method" "app/controllers/user_controller.rb" Nothing 1
, TermMatch "obscure_method" "spec/models/user_spec.rb" Nothing 5
, TermMatch "obscure_method" "spec/controllers/user_controller_spec.rb" Nothing 5
]
removalLikelihood' matches `shouldBe` Medium
it "doesn't mis-categorize allowed terms from different languages" $ do
let matches = [ TermMatch "t" "web/models/foo.ex" Nothing 1 ]
removalLikelihood' matches `shouldBe` High
removalLikelihood' :: [TermMatch] -> RemovalLikelihood
removalLikelihood' =
rLikelihood . trRemoval . calculateLikelihood config . resultsFromMatches
where
(Right config) = loadConfig