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module Spec where
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import Test.Hspec
import Main hiding (main)
import qualified Data.HashSet as HS
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main :: IO ()
main = hspec $ do
describe "dotted-squares" $ do
describe "parseInput" $ do
it "works as expected" $ do
input <- readFile "input-a.txt"
parseInput input `shouldBe` Just (Game mempty [ mkLine (Point 0 0) (Point 1 0)
, mkLine (Point 0 0) (Point 0 1)
])
it "fails when the game has too many user moves" $ do
input <- readFile "too-many-moves.txt"
parseInput input `shouldBe` Nothing
it "fails when the game has too few user moves" $ do
input <- readFile "too-few-moves.txt"
parseInput input `shouldBe` Nothing
describe "shiftLine" $ do
let horizontal = mkLineDir 1 1 DirRight
vertical = mkLineDir 1 1 DirUp
it "can move a horizontal line up" $
shiftLine DirUp horizontal `shouldBe` mkLineDir 1 2 DirRight
it "can move a horizontal line down" $
shiftLine DirDown horizontal `shouldBe` mkLineDir 1 0 DirRight
it "can move a horizontal line left" $
shiftLine DirLeft horizontal `shouldBe` mkLineDir 0 1 DirRight
it "can move a horizontal line right" $
shiftLine DirRight horizontal `shouldBe` mkLineDir 2 1 DirRight
it "can move a vertical line up" $
shiftLine DirUp vertical `shouldBe` mkLineDir 1 2 DirUp
it "can move a vertical line down" $
shiftLine DirDown vertical `shouldBe` mkLineDir 1 0 DirUp
it "can move a vertical line left" $
shiftLine DirLeft vertical `shouldBe` mkLineDir 0 1 DirUp
it "can move a vertical line right" $
shiftLine DirRight vertical `shouldBe` mkLineDir 2 1 DirUp
describe "rotateLine" $ do
let horizontal = mkLineDir 1 1 DirRight -- 1,1;2,1
vertical = mkLineDir 1 1 DirUp -- 1,1;1,2
it "can rotate a horizontal line CW anchored at its beginning" $
rotateLine Beg CW horizontal `shouldBe` mkLineDir 1 1 DirDown
it "can rotate a horizontal line CCW anchored at its beginning" $
rotateLine Beg CCW horizontal `shouldBe` mkLineDir 1 1 DirUp
it "can rotate a horizontal line CW anchored at its end" $
rotateLine End CW horizontal `shouldBe` mkLineDir 2 1 DirUp
it "can rotate a horizontal line CCW anchored at its end" $
rotateLine End CCW horizontal `shouldBe` mkLineDir 2 1 DirDown
it "can rotate a vertical line CW anchored at its beginning" $
rotateLine Beg CW vertical `shouldBe` mkLineDir 1 1 DirRight
it "can rotate a vertical line CCW anchored at its beginning" $
rotateLine Beg CCW vertical `shouldBe` mkLineDir 1 1 DirLeft
it "can rotate a vertical line CW anchored at its end" $
rotateLine End CW vertical `shouldBe` mkLineDir 1 2 DirLeft
it "can rotate a vertical line CCW anchored at its end" $
rotateLine End CCW vertical `shouldBe` mkLineDir 1 2 DirRight
describe "closesAnySquare" $ do
let threeSides = [ (0, 0, DirRight)
, (0, 0, DirUp)
, (0, 1, DirRight)
]
|> fmap (\(x, y, dir) -> mkLineDir x y dir)
|> HS.fromList
it "returns true the line we supply makes a square" $
closesAnySquare threeSides (mkLineDir 1 1 DirDown) `shouldBe` True
it "returns false the line we supply doesn't make a square" $
closesAnySquare threeSides (mkLineDir 1 1 DirUp) `shouldBe` False
it "returns false when we have no existing lines" $
closesAnySquare mempty (mkLineDir 1 1 DirUp) `shouldBe` False
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