module NixVersionSpec where

import Protolude
import Test.Hspec

import Cachix.Client.NixVersion

spec :: Spec
spec = describe "parseNixVersion" $ do
  it "parses 'nix-env (Nix) 2.0' as Nix20" $
    parseNixVersion "nix-env (Nix) 2.0" `shouldBe` Right Nix20
  it "parses 'nix-env (Nix) 2.0.1' as Nix201" $
    parseNixVersion "nix-env (Nix) 2.0.1" `shouldBe` Right Nix201
  it "parses 'nix-env (Nix) 1.11.13' as Nix1XX" $
    parseNixVersion "nix-env (Nix) 1.11.13" `shouldBe` Right Nix1XX
  it "parses 'nix-env (Nix) 2.0.5' as Nix201" $
    parseNixVersion "nix-env (Nix) 2.0.5" `shouldBe` Right Nix201
  it "parses 'nix-env (Nix) 2.0.1pre6053_444b921' as Nix201" $
    parseNixVersion "nix-env (Nix) 2.0.1pre6053_444b921" `shouldBe` Right Nix201
  it "fails with unknown string 'foobar'" $
    parseNixVersion "foobar" `shouldBe` Left "Couldn't parse 'nix-env --version' output: foobar"