module SemanticVersionTest where

import Numeric.Natural
import Test.Tasty.Hspec
import Wasp.SemanticVersion

spec_SemanticVersion :: Spec
spec_SemanticVersion = do
  -- TODO: Add more tests to cover everything.
  describe "`show` produces valid semver strings" $ do
    it "show Version" $ do
      show (Version 0 0 0) `shouldBe` "0.0.0"
      show (Version 0 19 0) `shouldBe` "0.19.0"
      show (Version 1 2 314) `shouldBe` "1.2.314"
    it "show empty Range" $ do
      show (mempty :: Range) `shouldBe` ""
    it "show complex Range" $ do
      show
        ( Range [lte (Version 1 3 6) <> backwardsCompatibleWith (Version 1 2 0)]
            <> Range [eq (Version 1 2 3)]
        )
        `shouldBe` "<=1.3.6 ^1.2.0 || =1.2.3"
  it "Concatenating version ranges produces union of their comparator sets" $ do
    let v1 = Version 1 0 0
    let v2 = Version 2 0 0
    let r1 = Range [gt v1, lt v2]
    let r2 = Range [lt v2]
    r1 <> r2 `shouldBe` r1
  describe "isVersionInRange" $ do
    it "No version is in empty range" $
      testRange
        mempty
        [ ((0, 5, 5), False),
          ((1, 0, 0), False),
          ((1, 2, 3), False),
          ((1, 2, 4), False),
          ((1, 3, 0), False),
          ((2, 0, 0), False)
        ]
    it "Recognizes only version v to be in range '=v'" $
      testRange
        (Range [eq (Version 1 2 3)])
        [ ((0, 5, 5), False),
          ((1, 0, 0), False),
          ((1, 2, 3), True),
          ((1, 2, 4), False),
          ((1, 3, 0), False),
          ((2, 0, 0), False)
        ]
    it "Recognizes only versions lesser or equal to v to be in range '<=v'" $
      testRange
        (Range [lte (Version 1 2 3)])
        [ ((0, 5, 5), True),
          ((1, 0, 0), True),
          ((1, 2, 3), True),
          ((1, 2, 4), False),
          ((1, 3, 0), False),
          ((2, 0, 0), False)
        ]
    describe "Recognizes only versions >=v but smaller than next breaking change to be in range '^v'" $ do
      it "when v is of shape x.y.z where x != 0." $
        testRange
          (Range [backwardsCompatibleWith (Version 1 2 3)])
          [ ((0, 5, 5), False),
            ((1, 0, 0), False),
            ((1, 2, 3), True),
            ((1, 2, 4), True),
            ((1, 3, 0), True),
            ((2, 0, 0), False)
          ]
      it "when v is of shape 0.y.z where y != 0." $
        testRange
          (Range [backwardsCompatibleWith (Version 0 2 3)])
          [ ((0, 0, 0), False),
            ((0, 1, 3), False),
            ((0, 2, 0), False),
            ((0, 2, 2), False),
            ((0, 2, 3), True),
            ((0, 2, 4), True),
            ((0, 3, 0), False),
            ((1, 0, 0), False)
          ]
      it "when v is of shape 0.0.z." $
        testRange
          (Range [backwardsCompatibleWith (Version 0 0 2)])
          [ ((0, 0, 1), False),
            ((0, 0, 2), True),
            ((0, 0, 3), False),
            ((0, 1, 0), False),
            ((1, 0, 0), False)
          ]
      it "Correctly works for complex version range." $
        testRange
          (Range [lte (Version 1 2 3) <> backwardsCompatibleWith (Version 1 1 0), eq (Version 0 5 6)])
          [ ((0, 5, 5), False),
            ((0, 5, 6), True),
            ((0, 5, 7), False),
            ((1, 0, 9), False),
            ((1, 1, 0), True),
            ((1, 1, 9), True),
            ((1, 2, 3), True),
            ((1, 2, 4), False),
            ((1, 3, 0), False),
            ((2, 0, 0), False)
          ]
  where
    testRange :: Range -> [((Natural, Natural, Natural), Bool)] -> Expectation
    testRange range versionsWithResults =
      ( (`isVersionInRange` range) . (\(x, y, z) -> Version x y z)
          <$> map fst versionsWithResults
      )
        `shouldBe` map snd versionsWithResults